Dolmar Lawn Mower Rm 72 13 H German Version Manual

							SUMMARY OF THE MAIN CONDITIONS WHEREBY THE SAFETY DEVICES PERMIT OR STOP WORK
The safety devices work in two ways:
–by preventing the engine from starting if all the safety requirements have not
been met;
–stopping the engine if even just one of the safety requirements is lacking.
a)To start the engine it will be necessary that:
–the transmission is in “neutral”;
–the blade is not engaged;
–the operator is seated or the parking brake is engaged.
b)The engine stops when:
–the operator leaves his seat when the blades are engaged;
–the operator leaves his seat when the transmission is not in “neutral”;
–the operator leaves his seat with the transmission in “neutral” but without
engaging the parking brake;
–the grass-catcher is lifted or the stone-guard is removed when the blades are
engaged;
–the parking brake is engaged without disengaging the blade.
The table below shows various operating conditions, highlightingwhy the safety
device shuts down the engine.
OPERATORGRASS-CATCHERBLADETRANSMISSIONBRAKEENGINE
A) WHEN  STARTING(Key in «START» position)
Sitting Uninfluential Disengaged1....5 - F/R
Engaged Does NOT start
Sitting UninfluentialEnga
ged«N» Engaged Does NOT start
Absent
Uninfluential Disengaged «N»DisengagedDoes NOT start
B) WHEN  CUTTING(Key in «ON» position)
Absent
YESEngagedUninfluential Engaged Stops
Absent
Uninfluential Disengaged1....5 - F/RDisengaged Stops
Absent
YES Disengaged «N»DisengagedStops
SittingNO
EngagedUninfluential Disengaged Stops
Sitting YESEngagedUninfluentialEngagedStops
CARD PROTECTION DEVICE
The electronic card has a self-resetting protector which breaks the circuit if there
is a fault in the electrical system. It results in the stopping of the engine and is sig-
nalled by the pilot lamp turning off.
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							EN 27 HOW TO  USE THE  MACHINE
The circuit automatically resets after a few seconds but the cause of the fault
should be ascertained and dealt with to avoid re-activating the protection device.
To avoid activating the protection device:
–do not reverse the cables on the battery terminals;
–do not use the machine without its battery or damage may be caused to the
charging regulator;
–be careful to not cause short-circuits.
E
ND OF MOWING
When you have finished mowing, disengage
the blade and ride the machine with the cut-
ting deck in the highest position.
Stop the machine, engage the parking brake
and turn off the engine by turning the ignition
key to «OFF».
When the engine is stopped, close the fuel
cock (1) (where fitted).
To avoid backfire, put the accelerator in the «SLOW»
position for 20 seconds before stopping the engine.
Always take out the ignition key if leaving the machine
unattended!
To keep the battery charged, do not leave the key in the
«ON» position when the engine is not running.
5.4 CLEANING AND STORAGE
C
LEANING
After each mowing, clean the outside of the machine, empty the grass-catcher
and shake it to remove residual grass and earth.
Clean the plastic parts of the body with a damp sponge using water and deter-
gent, taking care not to wet the engine, the electrical parts or the electronic card
located under the dashboard.
Never use hose-nozzles or harsh detergents for cleaning the
body and engine!
IMPORTANT
IMPORTANT

!WARNING!

!WARNING!
IMPORTANT
1 
						

							WASHING THE INSIDE OF THE CUTTING DECK
The machine has to be put on firm ground with the stone-guard or grass-catcher
in position. Washing the inside of the cutting deck and the collector channel is
done by attaching a water hose to the connector (1) and running water through
for a few minutes, with:
–the operator seated;
–the engine running;
–the drive in neutral;
–the blade engaged.
When washing, the cutting deck should be in the
fully lowered position. Take off the grass-catcher,
empty and rinse it, and then put it in a position
to assist quick drying.
S
TORAGE AND INACTIVITY FOR LONG PERIODS
If the machine is likely to be unused for a long period (more than 1 month), dis-
connect the cables from the battery and follow the instructions in the engine man-
ual. Lubricate all joints as directed in chapter 6.
Carefully remove any dry
grass cuttings which may have collected
around the engine or silencer to prevent their
catching fire the next time the machine is
used!
Empty the fuel tank by disconnecting the tube situ-
ated at the inlet of the fuel filter (1) and follow the
instructions in the engine booklet.
The battery must be kept in a cool and dry place. Before a
long storage period (more than 1 month), always charge the battery, and then
recharge before using again (chapter 6).
The next time the machine is used, check that there are no fuel leaks from the
tubes, fuel cock or carburettor.
IMPORTANT

!WARNING!
EN 28HOW TO  USE THE  MACHINE
1
1 
						

							6. MAINTENANCE
Before cleaning, maintenance or repair work, take out
the ignition key and read the relevant instructions. Wear suitable clothing
and strong gloves.
Never get rid of used oil, fuel or other pollutants in unautho-
rised places!
A
CCESS TO MECHANICAL PARTS
Lift the engine cover (1) to access the engine and
mechanical parts below it.
To  do so:
–put the machine on level ground, bring the cut-
ting deck into the highest position and put
blocks (2) of around 65 - 70 mm beneath the
edge to hold up the deck during the following
stages.
For mechanical drive models:
–engage the parking brake;
For hydrostatic drive models:
–put the drive release lever into the
«ENGAGED» position (see chap. 4, n° 23),
since it is necessary for the parking brake to
be disengaged to ensure that the speed
change lever has enough movement;
–remove the grass-catcher or stone-guard;
–unscrew the knob on the lever (3) and put the
lever into neutral «N» (For mechanical drive
models), or in «R» (For hydrostatic drive
models);
–open the access hatch (4) and unscrew the nut (5) with a 13 mm spanner;
–release the lever (6) so that the deck rests on the blocks and keep the lever
➤
➤
➤
➤
IMPORTANT

!WARNING!
EN 29 MAINTENANCE
1346
2
10
8
7
5
6 
						

							moved sideways so that it is not in any of the
notches. Hold the base of the seat (7) and tip the
cover back.
On closing:
–check that the collector channel (8) is properly fit-
ted onto its support (9) and resting on the right-
hand guide;
–put the lever (3) into the «R» position and lower
the cover (1) to the height of the levers (3) and (6);
–first put the lever (6) into its housing followed by
lever (3). Lower the cover in line with the fastening
screw.
When the cover (1) has been lowered check that:
–he channel exit (8) is correctly lined up with the opening in the rear
plate (10) and that it is resting on the support (11).
Then:
–fully tighten the fixing nut (5);
–put the lever (6) into the notch at position «7»;
–take the blocks (2) away, and reassemble the knob on the lever (3) and the
access hatch (4).
E
NGINE
Follow the instructions in the engine booklet.
Drain the engine oil by unscrewing the oil fill plug (1)
and using the syringe supplied.
Fit the pipe (2) onto the syringe (3) and insert it right
into the hole. Drain all the engine oil, repeating if nec-
essary until there is no oil left in the engine.
REAR AXLE
These are permanently lubricated with grease that
does not need changing.

!WARNING!
EN 30MAINTENANCE
8
911
10
8
1
2
3 
						

							BATTERY
To ensure long life to the battery it is essential to keep it carefully maintained.
The machine battery must always be charged:
–before using the machine for the first time after purchase;
–before leaving the machine for a prolonged period of disuse;
–before starting up the machine after a prolonged period of disuse.
–Carefully read and comply with the procedure for recharging described in the
booklet coming with the battery. If the procedure is not followed or the battery is
not charged, irreparable damage could be caused to the elements inside the
battery.
–A flat battery must be recharged as soon as possible.
Recharging must be done using a battery charger at con-
stant voltage.Other recharging systems can irreversibly damage the battery.
The machine has a connector (1) for
recharging, to be connected to the corre-
sponding connector of the special “CB01”
maintenance battery-charger supplied
( if included)or available on request
(chapter 8).
This connector must
only be used for connection to the “CB01” maintenance battery-charger. For its
use:
–follow the instructions given in the relative instruction booklet,
–follow the instructions given in the battery booklet.
E
LECTRICAL SYSTEM
The electronic card and the electrical sys-
tem are protected by:
–a self-resetting device which breaks the
circuit when there is a function fault, and
is accompanied by an audible signal
which continues until the key is
IMPORTANT
➤
IMPORTANT
EN 31 MAINTENANCE
1
(6.3 Amp)
1 
						

							removed. When the problem has been resolved the system automatically
resets after a few seconds;
–a 6.3 A delayed fuse (1) for the protection of the general and power circuits of
the system. This must be replaced after having eliminated the fault.
When any of these devices are activated, the machine stops.
A blown fuse must always be replaced by one of the same
type and ampere rating, and never one of a different rating.
If you cannot find the cause of the protection devices activation, consult a
Licensed Service Centre.
C
HANGING WHEELS
Stop the machine on a flat surface and
put blocks under a load-bearing part of
the frame on the side that the wheel is to
be changed.
The wheels are held by a snap ring (1)
which can be taken off with a screwdriver.
The rear wheels are directly coupled to
the axle shafts and fastened by a key that
forms part of the wheels hub.
Before re-fitting a wheel, smear some
grease on the axle and carefully re-fit the snap ring and washer (2).
Should you substitute one or both rear wheels, ensure that
they are of the same diameter, and check that cutting deck is horizontal to pre-
vent an uneven cut.
C
HANGING AND REPAIRING TYRES
Tyres are of the «Tubeless» type and therefore all puncture repairs will have to be
carried out by a tyre-repair expert in accordance with the methods for this kind of
tyres.
NOTE
IMPORTANT
EN 32MAINTENANCE
21 
						

							CHANGING BELTS
The motion from the engine to the rear axle and from the motor to the blade is
obtained by two “V” belts, whose duration largely depends on how the machine is
used.
Replacing belts is quite complicated because of dismantling and adjustments and
must only be carried out by a Licensed Service Centre.
Belts must always be replaced as soon as they are seen to
be worn! ALWAYS USE MANUFACTURER’S GENUINE SPARE BELTS!
C
UTTING DECK ADJUSTMENT
The cutting deck should be properly adjusted
to obtain a good cut. Height adjustments to
the cutting deck are made through three link-
ages.
Such adjustments are to be made on a flat
surface after having ensured that the tyre
pressures are correct.
For achieving good
results from cutting, the front part should
always be 2 - 4 mm lower than the rear.
To adjust the cutting deck so that it is parallel
with the ground:
–put one 26 mm block (1) under the edge of
the deck and one 32 mm block (2) under
the rear edge, then put the lifting lever into
the notch at position «1»;
–loosen the nuts (3 - 5 - 7) and the locknuts
(4 - 6 - 8) so that the deck is resting firmly
on the blocks;
–turn the nut (3) until the right-hand rear part
of the deck starts to rise, and then tighten
the relative locknut (4);
NOTE
NOTE
EN 33 MAINTENANCE
2
3
4
5
8
6
7
1 
						

							–screw down the nut (5) on the rod until the right-hand front part of the deck
begins to rise, and then tighten the relative locknut (6);
–screw the nut (7) on the front left support until the deck in that area begins to
rise, and then tighten the nut (8)
If you are unable to get the cutting deck parallel, consult a Licensed Service Cen-
tre.
B
RAKE ADJUSTMENT
The adjustment will need to be made while
the parking brake is engaged.
Loosen the nut (1) which holds on the bracket
(2) and turn the nut (3) until the length of the
spring (4) is 46 - 48 mm inside the washers.
When the adjustment has been made, tighten
the nut (1).
Do not screw to below these values to avoid overloading the
brake unit.
A
DJUSTING DRIVE ENGAGEMENT
For mechanical drive models:
If you should notice that forward drive power has dropped, you can adjust the
regulating screw (1) which is accessible through the hatchway beneath the
seat. Undoing the screw and then
lengthening the spring (2) will increase
the drive ability.
The best length for the spring is 86 mm
measured from the outer ends of the
spring. Once the adjustment has been
made, tighten the locknuts (3). Exces-
sive spring tension may cause too sud-
den engagement of the clutch, resulting
in the machine tipping up.➤
IMPORTANT
EN 34MAINTENANCE
2
86 mm
13
1
2
346 - 48
mm4 
						

							ADJUSTMENT TO BLADE ENGAGEMENT AND BRAKE
If there seem to be problems in engaging
the blade or the time for stopping after dis-
engagement is over 5 seconds, adjust the
spring tension (1).
To make this adjustment, loosen the nuts
(2) and screw or unscrew them on the con-
trol rod (3) in order to obtain a distance of
77-79 mm between the bracket (4) and the
inside of the washer (5), with the blade
engaged and the cutting height adjustment
lever at position “1”. When the adjustment has been made, screw the nuts (2)
back on.
For  hydrostatic drive models:
A
DJUSTING THE SPEED CHANGE LEVER
The speed change lever has a clutch device
which keeps it in the position selected during for-
ward movement and which returns the lever to
neutral when brake is operated.
If the lever does not stay in position during work-
ing and has difficulty in returning to neutral, the
adjuster nut (1) will need to be registered to
restore normal functioning.
S
HARPENING THE BLADE
A blade that is badly sharpened tears at the grass,
reduces collection and makes the lawn turn yellow.
To remove the blade, hold it firmly wearing strong
gloves and undo the central screw (1).
Sharpen the two cutting edges using a medium
➤
EN 35 MAINTENANCE
1
1
1
A77 - 79 mm2
345