Stiga Royal Line 966 D 1171 HST 1381 HST 8218 2222 80 Instructions Manual

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DEUTCHDE
7.11 AUSTAUSCH DER BRECHBOLZEN, 
R AUF ABB. 12
Die Schneeschrauben sind mit Spezialbolzen an der Achse 
befestigt, die so konstruiert sind, dass die brechen, wenn 
etwas im Räumschild hängenbleibt.
Immer Original Brechbolzen verwenden! Andere 
Bolzentypen können die Schneefräse stark 
beschädigen.
1. Motor ausstellen.
2.  Das Zündkerzenkabel abziehen.
3.  Abwarten, bis alle rotierenden Teile zum Stillstand 
gekommen sind.
4.  Alle Fremdkörper, die in der Schneeschraube 
hängengeblieben sind, entfernen.
5.  Die Schneeschraubenachse schmieren (siehe oben).
6.  Die Aussparungen in der Achse und der Schneeschraube 
aufeinander ausrichten.
7. Die Teile des gebrochenen Bolzens entfernen.
8. Einen neuen Original-Brechbolzen montieren.
7.12 SCHEINWERFERLAMPE
Nur STIGA-Originallampe mit 27 W verwenden. 
Stärkere Lampe zerstören den Scheinwerfer.
Die Glühlampe ist per Bajonetteinfassung im Schein-
werfer befestigt. Siehe Abb. 17. Glühlampe wie folgt er-
setzen:
1. Die Glühlampe etwa 30° gegen den Uhrzeigersinn 
drehen und herausnehmen.
2. Die Kunststoffverriegelung auf jeder Lampenseite lösen 
und den Kabelanschluss von der Lampe abziehen.
3. Die neue Glühlampe in umgekehrter Reihenfolge ein-
setzen.
8 AUFBEWAHRUNG
Die Schneefräse niemals mit Kraftstoff im Tank in 
einem geschlossenen Raum mit schlechter 
Belüftung aufbewahren. Es können sich 
Benzingase bilden, die in Verbindung mit offenem 
Feuer, Funken, brennenden Zigaretten o. ä. 
Brandgefahr bedeuten.
Wenn die Schneefräse länger als 30 Tage unbenutzt 
aufbewahrt werden soll, wird empfohlen:
1. Benzintank entleeren.
2.  Motor starten und laufenlassen, bis er aufgrund von 
Benzinmangel stehenbleibt.
3.  Motoröl wechseln, wenn dies nicht in den letzten drei 
Monaten erfolgt ist.
4. Zündkerze herausdrehen und etwas Motoröl in die 
Öffnung geben (ca. 30 ml). Den Motor einige 
Umdrehungen drehen. Zündkerze wieder eindrehen.
5.  Die gesamte Schneefräse gründlich reinigen.
6.  Alle Schmierpunkte wie unter “SCHMIEREN” 
beschrieben schmieren.
7.  Die Schneefräse auf Beschädigungen untersuchen. Bei 
Bedarf Schäden reparieren.
8.  Evtl. Lackschäden ausbessern.
9.  Nackte Metallflächen mit Rostschutzmittel behandeln.
10. Die Schneefräse nach Möglichkeit im Haus 
aufbewahren.
9 WENN TEILE DEFEKT SIND
Autorisierte Servicewerkstätten führen Reparaturen und 
Service aus. Sie verwenden Originalersatzteile.
Machen Sie einfachere Reparaturen selbst? Verwenden Sie 
dann ausschließlich Originalersatzteile. Sie passen immer 
und erleichtern die Arbeit. 
Ersatzteile erhalten Sie bei Ihrem Fachhändler oder bei 
Servicewerkstätten.
Bei der Bestellung: Geben Sie die Modellbezeichnung, das 
Kaufjahr sowie die Modell- und Typennummer des Motors 
an.
10 VERKAUFSBEDINGUNGEN
Es wird eine umfassende Garantie auf Material- und 
Fabrikationsfehler eingeräumt. Käufer und Anwender 
müssen die Hinweise in der beigefügten 
Bedienungsanleitung genau beachten.
Die Garantie deckt keine Schäden bei:
- Nichtbeachtung der mitgelieferten Bedienungsanleitung
- Unachtsamkeit
- falsche oder unzulässige Nutzung oder Montage
- Anwendung von Ersatzteilen, die keine 
Originalersatzteile sind
- Anwendung von Zubehör, das nicht von Stiga stammt 
oder von Stiga zugelassen ist
Die Garantie erstreckt sich ebenfalls nicht auf:
- Verschleißteile wie beispielsweise Antriebsriemen, 
Frässchnecken, Scheinwerfer, Reifen, Sicherheitsbolzen 
und Seilzüge
- normalen Verschleiß
- Motoren Für diese gelten die Garantiebedingungen der 
jeweiligen Hersteller.
Es gelten die im Land des Käufers gültigen gesetzlichen 
Vorschriften. Die darin geregelten Rechte des Käufers 
werden durch diese Garantie nicht eingeschränkt. 
						

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 ENGLISHEN
1 SYMBOLS
The following symbols appear on the machine. They are 
there to remind you of the care and attention required in use. 
This is what the symbols mean:
Warning.
Read and understand the owner’s manual 
before using this machine.
Remove the key, disconnect the spark 
plug wire, and consult technical literature 
before performing repairs or maintenance.
Danger - rotating fan.
Danger - rotating auger.
Keep hands out of discharge chute.
Keep hands and feet away from rotating 
parts.
Risk of burns.
Keep bystanders at a safe distance from 
the machine.
Never point the discharge chute towards 
bystanders.
Use hearing protection. 
2 SAFETY INSTRUCTIONS
2.1 GENERAL
• Please read through these instructions carefully. Learn all 
the controls and the correct use of the machine.
• Never allow children or anyone who is not familiar with 
these instructions to use the snow thrower. Local 
regulations may impose restrictions as regards the age of 
the driver.
• Never use the machine if others, particularly children or 
animals, are in the vicinity. 
• Remember that the driver is responsible for accidents that 
happen to other people or their property.
• Be careful not to trip or fall, especially when reversing 
the machine.
• Never use the snow thrower under the influence of 
alcohol or medication and if you are tired or ill.
2.2 PREPARATIONS
• Check the area to be cleared and remove any loose or 
foreign objects.• Disengage all controls before starting the engine.
• Never use the snow thrower unless properly dressed. 
Wear footwear that improves your grip on a slippery 
surface.
• Warning – Petrol is highly inflammable. 
a. Always store petrol in containers that are made 
especially for this purpose.
b. Only fill or top up with petrol outdoors, and never 
smoke when filling or topping up.
c. Fill with petrol before starting the engine. Never 
remove the filler cap or fill with petrol while the engine 
is running or still warm.
d. Screw the filler cap on tightly and wipe up any spilt 
petrol.
• Adjust the height of the auger housing to ensure it stays 
above gravel paths.
• Never, under any circumstances, make adjustments while 
the engine is running (unless otherwise specified in the 
instructions).
• Allow the snow thrower to adjust to the outdoor 
temperature before using it.
• Always use protective goggles or a visor during use, 
maintenance and service. 
2.3 OPERATION
• Keep hands and feet away from rotating parts. Always 
avoid the discharge chute opening.
• Be careful when driving on or crossing gravel paths, 
pavements and roads. Be aware of hidden dangers and 
traffic.
• Never direct the discharge chute towards a public road or 
traffic.
• If the snow thrower hits a foreign object, stop the engine, 
disconnect the spark plug cable and carefully inspect the 
machine for damage. Repair the damage before using the 
machine again.
• If the machine starts vibrating abnormally, stop the 
engine and look for the cause. Vibration is normally a 
sign of something wrong.
• Stop the engine and disconnect the spark plug cable: 
a. If the machine steers away from the driving position. 
b. If the auger housing or discharge chute is blocked and 
must be cleaned. 
c. Before beginning repairs or adjustments.
• Always make sure the rotating parts have stopped and all 
the controls are disengaged before cleaning, repairing or 
inspection.
• Before leaving the machine unattended, disengage all the 
controls, put it into neutral gear, stop the engine and 
remove the ignition key. 
• Never run the engine indoors except when taking it in and 
out of its place of storage. In this case ensure the door to 
the storage place is open. Exhaust fumes are toxic. 
• Never drive across a slope. Move from the top down, and 
from the bottom to the top. Be careful when changing 
direction on a slope. Avoid steep slopes.
• Never operate the machine with insufficient protection or 
without the safety devices in place.
• Existing safety devices must not be disconnected or 
disengaged. 
						

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 ENGLISHEN
• Do not alter the engine’s regulator setting and do not race 
the engine. The possibility of personal injury increases 
when the engine is run at high revs.
• Never use the snow thrower near enclosures, cars, 
windowpanes, slopes etc. without properly setting the 
discharge chute deflector. 
• Always keep children away from areas to be cleared. Get 
another adult to keep the children under supervision.
• Do not overload the machine by driving it too fast.
• Take care when reversing. Look behind you before and 
during reversing to check for any obstacles.
• Never point the discharge chute towards bystanders. Do 
not allow anyone to stand in front of the machine. 
• Disengage the auger when the snow thrower is to be 
transported or is not in use Do not drive too fast on 
slippery surfaces when transporting.
• Only use accessories that are approved by the machine’s 
manufacturer.
• Never drive the snow thrower in bad visibility or without 
satisfactory lighting.
• Always ensure you have a good balance and a tight grip 
on the handle. 
• Never use the snow thrower on a roof.
• Do not touch engine components because they are warm 
during use. Risk of burn injuries.
2.4 MAINTENANCE AND STORAGE
• Tighten all nuts and screws so that the machine is in safe 
working condition. Check the shear bolts regularly.
• Always use genuine spare parts. Non-genuine spare parts 
can entail a risk of injury, even if they fit the machine.
• Never store the machine with petrol in the tank in 
buildings where the fumes can come into contact with 
open flames or sparks.
• Allow the engine to cool before putting the machine in 
store.
• Before a long storage, check the instructions for 
recommendations.
• Replace damaged warning and instruction stickers.
• Let the engine run a couple of minutes with the auger 
connected after use. This prevents the auger from 
freezing solid.
3 ASSEMBLY
Note: Instructions to the left and right sides start from the 
driving position behind the snow thrower.
3.1 CONTENTS - OUTER PACKING
The packing contains:
- One snow thrower
- One adjustment lever
- One gear rod
- One discharge chute
- One set of instructions
- One assembly kit
In addition, the following are supplied:
- Chute clearing tool (10 in fig. 1)
- Extra break bolts for spare3.2 UNPACKING
1.  Remove all loose items from the carton.
2.  Cut the four corners of the carton and let the sides fall 
down.
3. Cut off the plastic straps.
4. Unscrew the screws (B) that fasten the shoes to the 
bedding. See fig. 1.
5.  Cut the plastic tape holding the control wires on the 
underside of the handle.
3.3 HANDLE, SEE FIG. 2
1.  Loosen, but do not remove, the securing nuts in the upper 
holes.
2.  Fold up the upper part of the handle. NOTE! Make sure 
the control wires do not jam.
3.  Fit screws from the outside in the lower holes and 
assemble with the following parts:
A Screws
D Lock nut
4.  Tighten the four nuts.
3.4 SNOW DISCHARGE CHUTE, SEE FIG. 3
1.  Place the discharge chute (E) on the flange against the 
worm gear.
2.  Mount the carriage piece (F) with two screws
3. Adjust the 
chute worm gear. See 6.6.4.
4. Tighten the 
chute worm gear properly. 
3.5 ADJUSTMENT LEVER, SEE FIG. 4
1.  Place the shaft through its hole in the control panel and 
into the angle joint.
3.  Lock the joint with the locking pin (G).
4.  Check the discharge chute by turning it fully in both 
directions. The chute should rotate freely.
3.6 CONTROL KNOBS, FIG. 5
The assembly is performed as follows:
1.  Screw the nut (J) onto the lever.
2.  Mount the control knob (K) onto the lever.
3.  Tighten the nut on the underside of the control knob.
3.7 GEAR LEVER/SPEED LEVER
Manual, see fig. 6.
HST, see fig. 7.
1. Set the lever in a suitable position to simply fit the angle 
link (L) into the hole in the gearbox lever (M).
2. Assemble the washer and the lock nut.
3. Tighten the nut.
3.8 CHECKING THE CONTROL WIRES
The control wires might need adjusting before using the 
snow thrower for the first time.
See ADJUSTING THE CONTROL WIRES below.
3.9 TYRE PRESSURE
Check the air pressure in the tyres. See”6.4”. 
						

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 ENGLISHEN
4 CONTROLS
The motor is equipped with a protection grid. The 
motor may never be started without the grid fitted 
or with a defect grid.
See fig. 1.
4.1 THROTTLE (2)
Controls the engine’s revs. The throttle has three positions:
1. Full throttle
2. Idling.
3. Stop position – the engine is short-circuited. 
4.2 CHOKE (5)
Used when starting a cold engine: The choke has two 
positions:
1. The choke is open
2. The choke is closed (for cold starting)
4.3 PRIMER (4)
Pressing the rubber prime-starter squirts fuel into the 
carburettor intake pipe to make it easier to start a cold 
engine. 
4.4 IGNITION KEY (3)
Must be fully inserted or the engine will not start. Do not turn 
the key!
1. Key fully inserted – engine can start.
2. Key pulled out – engine cannot start.
4.5 STARTING HANDLE (1)
Manual cord start with rewinding.
4.6 DIPSTICK (8)
For filling and checking the oil level in the engine. 
The dipstick has two level marks:
FULL = maximum oil level
ADD = minimum oil level
4.7 FILLER CAP/FUEL METER(7)
For filling with petrol. The filler cap is integrated with 
a fuel meter, wich displays the petrol amount in the 
tank.
4.8 OIL DRAINING PLUG (14)
For draining the old engine oil when changing the oil.
4.9 START BUTTON – ELECTRICAL START (11)
Not visible in the fig.ure. Activates the electric starting 
motor.
4.10 ELECTRIC CABLE – ELECTRICAL START 
(12)
The cable supplies power to the starting motor. Connect the 
cable to a 220/230 volt earthed socket via an earthed 
extension lead. It is wise to use an earth fault breaker.
4.11 SPARK PLUG PROTECTION (21)
The protection is easily removable by hand. The spark plug 
is located under the protection.4.12 GEAR LEVER, MAN (17)
The machine has 6 forward gears and 2 reverse to regulate 
the speed. 
The gear stick must not be moved if the driving clutch 
lever is depressed.
4.13 SPEED LEVER, HST (17)
The machine is equipped with a stepless hydrostatic 
transmission. The speed is regulated stepless forwards and 
backwards with the speed lever.
4.14 CLUTCH LEVER- DRIVING (16)
Engages the wheels when put into gear and the lever 
is pushed towards the handle.
Situated on the left side of the handle.
4.15 CLUTCH LEVER- AUGER (20)
Connects the auger and fan when the lever is pushed 
down towards the handle. 
Situated on the right side of the handle.
4.16 LEVER, CHUTE DEFLECTOR (18)
Lever at the panel for adjustment of the chute deflector (9)
1. Lever forwards – longer throwing distance.
2. Lever backwards – shorter throwing distance.
4.17 ADJUSTMENT LEVER (19)
Changes the direction of the discharged snow. 
1. Turn the lever clockwise – the discharge turns to 
the right.
2. Turn the lever anti-clockwise – the discharge turns 
to the left. 
4.18 SHOES (13)
Used to set the height of the auger housing above the ground.
4.19 WHEEL LOCK
4.19.1 HST
See fig. 8. Machines with hydrostat are equipped with easily 
disengaged wheel locks. This is essential when mowing the 
machine without the motor running. 
Disengage/engage the wheel locks according to the 
following:
1. Pull out the knob (1).
2. Turn the knob 90° (1/4 of a turn) and release it.
4.19.2 Man
Manual models are equipped with differential and have no 
wheel locks. The wheels can rotate with different speeds 
simultaneously as the machine is driving.
4.20 CHUTE DEFLECTOR (9)
The chute deflector is adjusted with the lever (18) and 
determine the throwing distance. 
						

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 ENGLISHEN
4.21 HANDLE HEATING (6)
The machine is equipped with electrical handle heating. To 
activate the heating, set the switch in the desired position:
Forwards - Light heating
Middle - No heating
Backwards - Full heating
The heating can be activated when the motor is running only.
4.22 HEADLAMP (15)
The headlamp is always activated when the motor is running.
4.23 CHUTE CLEARING TOOL (10)
The chute clearing tool is located in a holder on top of the au-
ger housing. The chute clearing tool must always be used 
when cleaning the discharge chute and augur.
Always stop the engine before clearing the chute.
Never clear the snow discharge chute with your 
hand. Risk of serious injury.
5 USING THE SNOW THROWER
5.1 GENERAL
Never start the engine until all the above measures under 
ASSEMBLY have been carried out. 
Never use the snow thrower without first reading 
and understanding the instructions and all the 
warning and instruction stickers on the machine. 
Always use protective goggles or a visor during 
use, maintenance and service.
5.2 BEFORE STARTING
Some snow throwers are delivered without oil in the engine. 
Fill the engine with oil before using. The oil is supplied in a 
separate bottle.
Do not start the engine until filled with oil. The 
engine can be seriously damaged without oil.
1.  Place the machine on a level floor.
2.  Loosen the dipstick and fill with oil up to the FULL mark 
(fig. 9).
3.  Use good quality oil marked A.P.I service SF, SG or SH. 
Use SAE 5W30 - 10W40 oil. 
4. The crankcase holds: 0.8 litres.
Always check the oil level before using. The snow thrower 
must stand on level ground when checking.
5.3 FILL UP THE PETROL TANK
Always use lead-free petrol. Oil-mixed 2-stroke petrol must 
not be used.
NOTE! Bear in mind that ordinary lead-free petrol is 
perishable; do not purchase more petrol than can be used 
within thirty days.
Environmental petrol can be used, i.e. alkylate petrol. This 
type of petrol has a composition that is less harmful for 
people and nature.
Petrol is highly inflammable. Always store fuel in 
containers that are made especially for this 
purpose. Store the petrol in a cool, well ventilated place – 
not in the house. Store the petrol well out of reach 
for children.
Only fill or top up with petrol outdoors, and never 
smoke when filling or topping up. Fill with fuel 
before starting the engine. Never remove the filler 
cap or fill with petrol while the engine is running 
or still warm.
Do not fill the petrol tank right to the top. After filling, screw 
the filler cap on tightly and wipe up any spilt petrol. 
5.4 STARTING THE ENGINE (WITHOUT 
ELECTRICAL START)
Do not touch engine components because they are 
warm during use. Risk of burn injuries.
Never run the machine indoors. The exhaust 
fumes contain carbon monoxide, a very toxic gas.
1.  Make sure the driving and auger clutch levers are 
disengaged (fig. 1).
2.  Push the throttle to position  .
3.  Put in the ignition key. Ensure it clicks tight. Do not turn 
the key!
4.  Turn the choke to position  . Note: A warm engine does 
not need the choke.
5.  Press the rubber primer-start 2 or 3 times. Make sure the 
hole is covered when pressing the primer-start (fig. 10). 
Note: Do not use this function when the engine is warm.
6.  Pull on the starter cord until you feel resistance. Start the 
engine with a sharp pull.
7.  When the engine starts, turn the choke anti-clockwise 
until it is fully open.
5.5 STARTING THE ENGINE (WITH ELECTRICAL 
START)
Do not touch engine components because they are 
warm during use. Risk of burn injuries.
Never run the machine indoors. The exhaust 
fumes contain carbon monoxide, a very toxic gas.
1.  Attach the connecting cable to an earthed extension 
lead. Then connect the extension lead to a 220/230 volt 
earthed socket.
2.  Make sure the driving and auger clutch levers are 
disengaged (fig. 1).
3.  Push the throttle to position  .
4.  Put in the ignition key. Ensure it clicks tight. Do not turn 
the key!
5.  Turn the choke to position  . Note: A warm engine does 
not need the choke.
6.  Press the rubber primer-start 2 or 3 times. Make sure the 
hole is covered when pressing the primer-start (fig. 10). 
Note: Do not use this function when the engine is warm.
7.  Starting the engine:
a. Press the start button to activate the starting motor. 
b. When the engine starts, release the start button and 
open the choke by slowly turning the choke lever anti-
clockwise to position   .
c. If the engine stutters, close the choke immediately and 
gradually open it again.
d. First pull out the extension lead from the socket. Then 
remove the extension lead from the engine. 
						

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 ENGLISHEN
Note: The electrical starting motor has overload 
protection. The motor stops automatically when 
overheated. It will not restart until it has cooled, which 
takes about 5 - 10 minutes.
5.6 STOPPING
1.  Release both clutch levers. Note. If the snow thrower 
continues rotating - see ADJUSTING THE CONTROL 
WIRES below.
2.  Push the throttle to idling position  . Let the engine run 
on idle a few minutes to melt the snow.
3a. Machines without an electric starter:
With the engine running, pull out the start handle a few 
times to prevent the starting apparatus from freezing. An 
unusual rattling noise occurs. This does not damage the 
engine.
3b. Machines with an electric starter:
With the engine running, keep the start button pressed in 
for a few seconds to prevent the starting motor freezing 
(see above for connecting electric cable). An unusual 
rattling noise occurs. This does not damage the engine.
4. Push the throttle to the bottom to position  .
5. Remove the ignition key. Do not turn the key!
If the machine is left unattended, stop the engine 
and remove the ignition key. 
5.7 STARTING
1.  Start the engine as above. Let the engine run a few 
minutes to warm before use.
2.  Set the chute deflector.
3.  Turn the adjustment lever and set the deflector to throw 
the snow in the direction of the wind.
For manual models; The gear stick must not be 
moved if the driving clutch lever is depressed.
4.  Set the gear/speed lever to a suitable position. 
5.  Press down the auger clutch lever (20 in fig. 1) to activate 
the auger and discharge fan.
Watch out for rotating auger. Keep hands, feet, 
hair and loose clothing away from any moving 
parts on the machine.
6.  Press down the auger clutch lever (16 in fig. 1). The snow 
thrower now moves forward or backwards depending on 
the gear you have chosen.
7. One-hand-control.
For manual models only; Never actuate the gear 
lever when the one-hand-control or the drive lever 
is actuated. This will serious damage the friction 
wheel.
5.8 DRIVING TIPS
1. Always run the engine on full throttle or next best.
The silencer and surrounding parts become very 
hot when the engine is running. Risk of burns. 
2.  Always adapt the speed to the snowy conditions. 
Regulate the speed with the gear stick not the throttle.
3.  Snow is more effectively removed directly after falling.
4.  Always throw the snow in the direction of the wind if 
possible.
5.  Adjust the shoes with the screws (13 in fig. 1) to suit the 
ground conditions: 
- On flat ground, e.g. asphalt, the shoes should be about  
3 mm under the scraping blade.
- On uneven ground, e.g. gravel paths, the shoes should 
be about  30 mm under the scraping blade.Always adjust the shoes so that gravel and stones 
are not fed into the snow thrower. There is a risk 
for personal injury if these are thrown out at high 
speed. 
Ensure the shoes are adjusted the same on both sides.
6. Adapt the speed so that the snow is thrown in an even 
stream.
If snow fastens in the chute do not try to remove it 
before: 
- Releasing both clutch levers. 
- Stopping the engine. 
- Removing the ignition key. 
- Disconnecting the cable from the spark plug. 
- Do not put your hand inside the chute or auger. 
 Use the tool supplied.
5.9 AFTER USE
1.  Check for loose or damaged parts. If required, change 
damaged parts.
2.  Tighten loose screws and nuts.
3.  Brush all the snow from the machine.
4.  Move all the controls backwards and forwards a few 
times.
5.  Put the choke in position   
6.  Disconnecting the starting cable from the spark plug.
Do not cover the machine while the engine and 
silencer are still warm.
6 MAINTENANCE
6.1 MAINTENANCE SCHEDULE
Service item Frequency Type Par.
Motor oil 
changeAfter 2 hour 
and then every 
50:th hour.SAE 5W30 - 
10W406.2
Drive belts, 
checkAfter 2 hour 
and then every 
year.7.4
7.5
7.6
Auger shaft, 
lubricate10 hour Lithium grease 6.6.2
Chute worm 
gear, lubricate/
check10 hour 10W oil 6.6.4
Deflector, lubri-
cate10 hour 10W oil -
Wires, lubricate 10 hour 10W oil 6.6
Linkages, lubri-
cate10 hour 10W oil 6.6
Tyre pressure, 
check50 hour 6.4
Auger worm 
gear, check50 hour Winter weight 
worm gear oil6.6.3
Spark plug 
check/replace100 hour RC124YC 6.3 
						

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 ENGLISHEN
6.2 OIL CHANGE
Change the oil the first time after 2 hours of operation, and 
subsequently every 50 hours of operation or once a season. 
Change oil when the engine is warm.
The engine oil may be very warm if it is drained off 
directly after the engine is shut off. So allow the 
engine to cool a few minutes before draining the 
oil.
1.  Lean the snow thrower slightly to the right so that the oil 
draining plug (14 in fig. 1) is the lowest point of the 
engine.
2.  Unscrew the oil draining plug.
3.  Let the oil run out into a container.
4.  Screw back the oil draining plug.
5.  Fill with new oil: See BEFORE STARTING above for 
type and amount. 
6.3 SPARK PLUG
Check the spark plug once a year or every hundred hours of 
use.
Clean or change the plug if the electrodes are burned. The 
engine manufacturer recommends: RC124YC or equivalent.
Correct spark gap: 0.7-0.8 mm.
The spark plug is accessible under the protection plate in fig. 
11.
6.4 TYRE PRESSURE
The air pressure should be equal in both tires for best 
performance. Be sure to keep caps on valves to prevent entry 
of debris into the valve stem when tires are filled. The 
recommended air pressures are shown in the table below.
6.5 CARBURETTOR
The carburettor is factory set. If adjustment is required, 
contact an authorised service station. 
6.6 LUBRICATION
No service must be carried out before: 
- The engine has stopped. 
- The ignition key has been removed. 
- The cable has been disconnected from the spark 
plug.
If the instructions say that the machine is to be lifted at the 
front and rested on the auger housing then the petrol tank 
must be emptied.
Empty the petrol tank outdoors when the engine is 
cold. Do not smoke. Empty into a container 
designed for petrol.
6.6.1 Discharger
Lubricate the discharger flange and the adjustment lever 
worm gear every 10:th hour of use and before long time 
storage. 
6.6.2 The auger shaft
Lubricate the auger shaft lubricating nipples with a grease 
gun every 10th hour of use (fig. 12). Always lubricate the 
shaft when changing the shear bolts.
Dismantle the bolts for long time storage. Lubricate with the 
grease gun and then rotate the auger freely on the shaft before 
replacing the bolts.
6.6.3 Worm gear (S in fig. 12)
The worm gear if filled with special lubricant at the factory. 
Refilling is not normally required.
Loosen the plug once a year and check if the worm gear 
contains lubricant (fig. 12).
If it is leaking or has been repaired it must be refilled with 
lubricant. The worm gear holds 92 grams of lubricant at the 
most.
Use Benalene #900 Grease or similar. 
6.6.4 Chute worm gear
See fig. 13.
If the discharge chute is difficult to operate, first lubricate the 
pinion gear (B) and ring gear (A). If it is still difficult to 
operate, adjust as follows:
1. Loosen the nut (C), which holds the pinion gear bracket 
in the slotted hole.
2. If the pinion gear is too tight against the ring gear, move 
it away slightly and then retighten the nut.
3. Check the operation again.
Note! If the discharge chute will not stay in position, 
adjust the pinion gear (B) closer to the ring gear (A).
6.6.5 Hexagonal shaft, Man
The hexagonal shaft, chain sprocket and chains are not to be 
lubricated. All bearings and bushings are permanently 
lubricated and require no maintenance.
Lubricating these parts will only result in the grease getting 
on to the friction wheel and disc drive plate, which could 
damage the rubber clad friction wheel.
For long time storage the above-mentioned parts should be 
lightly wiped with an oily rag to prevent rust. 
6.6.6 Hydrostat, HST
The hydrostatic transmission is factory-filled with oil at the 
delivery. If it not has been opened (permitted to authorised 
personell only) and if no leakage exist, there is no need for 
filling-up. Normally, there is no need for oil change in the 
transmissio
7 SERVICE AND REPAIRS
No service must be carried out before: 
- The engine has stopped. 
- The ignition key has been removed. 
- The starting cable has been disconnected from 
the spark plug.
If the instructions say that the machine is to be lifted at the 
front and rested on the auger housing then the petrol tank 
must be emptied.
Empty the petrol tank outdoors when the engine is 
cold. Do not smoke. Empty into a container 
designed for petrol. Machine Pressure
966 D 1.4 bar
1171 HST 1.0 bar
1381 HST 1.0 bar 
						

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 ENGLISHEN
7.1 TROUBLESHOOTING
7.2 ADJUSTING THE SCRAPER BLADE AND 
SHOES
The scraper blade and shoes gets worn after a long term of 
use.
Adjust the scraper blade (always together with the shoes) 
until desired distance to the ground.
The scraper blade and the shoes are reversible and can be 
used on both sides.
See “5.8”.7.3 GENERAL ABOUT BELTS
The drive belts should be checked (and adjusted if required) 
for the first time after 2 – 4 hours use and then the middle of 
each season. They should thereafter be checked twice a year.
The belts are specially designed for this machine. They must 
be replaced by new genuine belts provided by your retailer or 
authorised service station.
When the belts are adjusted or replaced, the control wires 
must also be adjusted (see below).
7.4 THE AUGER BELT
7.4.1 Replacing the auger belt
Man, see fig. 18, 19.
HST, see fig. 20, 21.
1.  Remove the ignition key.
2.  Loosen the screws (3) and dismantle the bottom plate (2). 
See fig. 16.
3.  Remove the belt protective cover (1) by loosening the 
screws (2). See fig. 16.
4.  Loosen the belt guide (E) at the engine belt disc.
5.  Remove the tension pulley (B) from the belt.
6.  Replace the belt (G). NOTE! Only genuine STIGA belts 
are to be used.
7.  Adjust the belt tension according to the instructions 
below.
8.  Assemble the belt guide (E).
9. Reassemble the belt protection. See fig. 16.
10. Adjust the control wire according to the instructions 
“7.7”.
7.4.2 Check and adjustment of the auger belt 
Man, see fig. 18, 19.
HST, see fig. 20, 21.
1.  Remove the ignition key.
2.  Remove the belt protective cover (1) by loosening the 
screws (2). See fig. 16.
3.  Loosen the tension-pulley (B) and move it about 3 mm 
towards the belt.
4.  Tighten the tension pulley nut.
5.  Check the belt tension by pressing down the auger clutch 
lever. With a finger, you should be able to push the belt  
about 12 - 13 mm without any great power (fig. 22). 
6. Repeat the above procedure if further adjustment is 
required.
7. Reassemble the belt protection. See fig. 16.
7.4.3 Adjustment of auger belt guide
Man, see fig. 18, 19.
HST, see fig. 20, 21.
1.  Remove the ignition key.
2.  Remove the belt protective cover (1) by loosening the 
screws (2). See fig. 16.
3.  Activate the auger clutch lever (20) in fig. 1.
4.  Check the distance between the belt guide and the belt. 
See fig. 19/21 according the distance.
5.  If adjustment is required, loosen the screw to the belt 
guide and set the correct distance.
6.  Tighten the screw properly.
7.  Reassemble the belt protection.  Problem Possible cause Remedy
Engine fails to 
start.Engine flooded. Repeated tart 
attempts with full 
throttle choke OFF
Water in fuel or old 
fuel.Drain tank and 
refill with fresh 
fuel.
Other. Check carefylly the 
start procedure 
according to this 
manual.
Engine starts hard 
or runs poorly.Spark plug faulty. Replace the spark 
plug.
Fuel cap ventilation 
is blocked.Clear the ventila-
tion.
Auger does not 
rotate.Foreign matter 
blocking.Clean the auger 
with the supplied 
stick.
Shear pin broken. Replace the broken 
pin.
Auger drive belt 
slipping.Adjust the belt and 
wire.
Auger drive belt 
broken.Replace the belt.
Auger does not 
stop when the 
lever is released.Auger drive belt is 
out of adjustment.Adjust the belt.
Auger drive guide 
is out of adjust-
ment.Adjust the guide.
Snowthrower 
veers to one side.Tire pressure not 
equal.Adjust the tire pres-
sure
Only one wheel 
drives.Check the wheel 
locks.
Shoes uneven 
adjusted.Adjust scraper 
blade and shoes.
Scraper blade une-
ven adjusted.Adjust scraper 
blade and shoes. 
						

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 ENGLISHEN
7.5 DRIVE BELT, MAN
7.5.1 Replacing the drive belt, Man
See fig. 18, 19.
1.  Dismantle the auger belt as described above.
2. Remove the left wheel.
3.  Remove the locking ring (C) from the swing plate shaft 
(D). Pull out the shaft.
4.  Remove the spring (H).
5.  Replace the belt (I). NOTE! Only genuine STIGA belts 
are to be used.
6.  Check that the tension pulley (A) is in line with the belt 
(I).
7.  Reassemble the spring (H), shaft (D) and locking ring 
(C).
8.  Check that the underside of the disc drive plate (Q) is 
situated between the marks (N). See fig. 24.
NOTE! If the machine still does not drive properly, 
recheck the location of the disc drive plate (Q).
9.  Reassemble all parts in the reverse order.
7.5.2 Adjustment of drive belt, Man
The belt has a spring-loaded tension pulley. Adjustment is 
not required. If the belt slips, change it.
7.6 DRIVE BELT, HST
7.6.1 Replacing the drive belt, HST
See fig. 20, 21.
1.  Dismantle the auger belt as described above.
2.  Loosen the beltguides (J, L) at the motor pulley.
3.  Work off the used belt and fit the new. NOTE! Only 
genuine STIGA belts are to be used.
4.  Assemble the belt guides (J, L) at the motor pulley. 
Adjust the belt guide according to the instructions below.
5.  Reassemble all parts in the reverse order.
6.  Adjust the control wire as described further “7.7”.
7.6.2 Adjusting the drive belt, HST
1. Dismantle the belt cover (1) by loosing the screw (2). See 
fig. 16.
2. Adjust the tension pulley (A in fig. 20) until a belt play of 
about 45 mm. See fig. 23.
Do not overtighten the belt. This will damage the 
belt and the bearings. Always check the belt 
tension according to the instructions below before 
using the machine.
3. Check the adjustment according to the instructions 
below.
4. Reassemble the belt cover. See fig. 16.
7.6.3 Check the drive belt, HST
1.  Disconnect the wheel locks.
2. Set the speed lever in the neutral position. Do not activate 
the clutch lever.
3.  Start the engine and move the speed lever slow forwards. 
If the drive shafts rotate, the belt is too tight, and the 
tension pulley (A in fig. 20) shall be loosened and moved 
from the belt.
4. If the tension pulley was moved redo the adjustment and 
the check as described above.7.7 ADJUSTING THE CONTROL WIRES
When the belts are adjusted or replaced, the control wires 
must also be checked/adjusted (see below).
7.7.1 Adjusting auger wire
1.  Remove the ignition key.
2. Dismantle the belt cover (1) by loosing the screw (2). See 
fig. 16.
3. Actuate the auger drive lever and observe the tension 
pulley. When the auger lever is in its half way of 
movement against the handle, the pulley movement shall 
stop against the belt (the pulley is allowed to move a few 
mm during the last half of movement of the lever). See 
fig. 25.
4. If necessary, unhook the spring and adjust the wire at the 
screw, connected to the spring. See fig. 26.
5. Reassamble all parts in the reverse order.
7.7.2 Adjusting drive wire, Man
1.  Remove the ignition key.
2.  Lift the snow thrower forward and rest in on the auger 
housing.
3. Loosen the screws (3) and dismantle the bottom plate (2). 
See fig. 15.
4. Actuate the auger drive lever and observe the friction 
disc. When the auger lever is in its half way of movement 
against the handle, the friction disc shall touch the 
friction wheel. See fig. 28.
5. If necessary, unhook the wire at the adjusting plate and 
replace the wire in a suitable hole. See fig. 27.
6. Reassamble all parts in the reverse order.
7.7.3 Adjusting drive wire, HST
The drive wire, HST has no adjustment. The clutch is 
adjusted with the belt tensioning pulley. See “7.6.2”.
7.8 FRICTION WHEEL, MAN
If the snow thrower does not move forward/backward the 
problem could be the driving belt, driving control wire or 
friction wheel. Check the friction wheel as follows.
7.8.1 Checking the friction wheel
1.  Remove the ignition key.
2.  Lift the snow thrower forward and rest in on the auger 
housing.
3.  Loosen the screws (3) and dismantle the bottom plate (2). 
See fig. 15.
3.  Put the gear stick in neuitral position.
4.  With the gear stick in the neutral position, the centre of 
friction wheel shall correspond with the centre of the 
friction disc. See fig. 29.
5.  Adjustments are carried out as described below.
6.  Reassemble in the reverse order.
7.8.2 Adjusting the friction wheel
1. Loosen the friction wheel linkage and set the friction 
wheel until the measurement in position 4 above is 
obtained.
2.  If the friction wheel is heavy worn and adjustments 
cannot be carried out satisfactorily, replace in accordance 
with the following instructions.
3.  Otherwise reassemble in the reverse order after adjusting. 
						

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 ENGLISHEN
7.8.3 Replacing the friction wheel
1.  Disassemble the differential according to 7.9.2.
2.  Disassemble the two bearing attachments (M in fig. 24).
3.  Disassemble the shaft and bearing attachments. Note the 
location of the two washers (17 in fig. 30).
4.  Replace the friction wheel on its hub (fig. 31).
5.  Reassemble all the parts in the reverse order. Note the 
following when reassembling:
- Check that the washers (17 in fig. 30) are correctly 
placed.
- Check that the washers (13 in fig. 30) are correctly 
placed.
- Check that the shaft (8 in fig. 31) rotates freely.
- Check that the friction wheel and disc drive plate are 
totally free from oil and grease.
7.9 DIFFERENTIAL (966 D)
7.9.1 Description
In the differential the drive force is transferred from the chain 
drive to the right and left shafts via two free wheels, one for 
each shaft.
This means that the outer wheel can rotate faster than the in-
ner wheel on bends.
With the differential the snow thrower is as easy to drive 
around bends as straight forward.
The differential also makes the snow thrower easier to handle 
on hard surfaces, for example in the garage or in the store.
7.9.2 Replacing the differential
See fig. 36.
The differential (A) is replaced according to the following 
instructions:
1.  Remove the ignition key.
2.  Lift the snow thrower forward and rest in on the auger 
housing.
3. Disassemble the wheels.
4. Loosen the screws (3) and dismantle the bottom plate (2). 
See fig. 15.
5. Disassemble the bearing housings (B) with bearings at 
both sides.
6. Loosen the intermediate shaft (C) by disassembling the 
bearing screws (D) at both sides.
7. Slacken the chain tension by loosening the support 
bearing attachment (E). The support bearing attachment 
is loosened by disassembling the two screws at the top.
8. Remove the chain from the differential.
9. Pull out the shafts from the differential and remove the 
differential.
10. Check the chains. Replace if required. The chains shall 
not be lubricated. They are factory lubricated. Excessive 
grease can spoil the friction if it reach the friction wheel 
or the friction disc.
11. Check the bearings for dissonance and uneven friction at 
rotation. Replace if required.
12. Reassemble all parts in the reverse order.7.10 HYDROSTAT (1171 HST, 1381 HST)
7.10.1 Description
See fig. 32.
The hydrostatic power-transmission transfers the power from 
the motor to the driving wheels with stepless ratio forwards 
as well as backwards. 
The unit consists of a hydraulic pump and a hydraulic motor. 
The hydraulic pump can be set with an angle positioned disc 
to pump different amount of oil.
A big angle of the disc gives a big stroke to the peripheral 
located pistons and such a big oil flow.
A small angle gives a small stroke and such a small oil flow.
By angeling the disc over to the other side, the oil will flow 
in the opposite direction and the machine moves backwards.
The oil flow is then conducted to a hydraulic motor. The 
hydrauic motor has a fixed angle positioned disc to which the 
peripheral located pistons push. This makes the unit, where 
the pistons are located, to rotate.
7.10.2 0Troubleshooting
See fig. 33-35.
At malfunction in the hydrostat, in first-hand check the 
following:
1. The by-pass valve shall be in closed position. I.e. the 
lever (K) in fig. 35 shall be in its forward position in the 
machines´ direction of travel.
2. The speed lever (J) shall be able to move between its end 
positions when actuating the handlebar speed lever. Ev. 
adjustments is performed at the link (7) in fig. 7.
3. Check that the driving belt is intact. See 7.6.
4. Check the oil level. See below.
7.10.3 Replacing the hydrostat
See fig. 33-35.
The hydrostat, (B) in fig. 33, can be replaced according to the 
instructions below:
1.  Remove the ignition key.
2. Disassemble the belt cover (1) by loosening the screws 
(2). See fig. 16.
3. Arrange the machine on its auger.
4. Disassemble the wheels by removing the wheel lockings. 
See (2) in fig 8.
5. Disassemble the bottom plate (2) by loosing the four 
screws (3). See fig. 15.
6. Loosen the speed lever lower attachment (4) in fig. 7.
7. Disassemble the screw (A) with its nut and pull out the 
wheel axle (D) to the left.
8. Loosen the screw (G) and rotate the wire attachment (E) 
forwards. After that, disassemble the screw (F) holding 
the front part of the hydrostat.
9. Hold the hydrostat and disassemble the screw (C). After 
that, remove the hydrostat from the machine.
10. Assemble the hydrostat in the reverse order.
Note! Check that the ventilating hose remain intact 
during the assembling procedure and is located on its 
nipple also after the assembly.
Note! Check that the by-pass lever (K) in fig. 35 is closed 
(position C) after the assembling procedure. I.e. in its 
forward position in the machines´ direction of travel.