Troy-Bilt 675 Hp Manual

							11
1. On the side of the mower, lift the side mulching plug. See 
Figure 3-9.
2
1
Side Mulching 
Plug
Figure 3-9
2. Slide two hooks of side discharge chute under hinge pin on 
mulching plug assembly. Lower the mulching plug. Do not 
remove side mulching plug at any time, even when you are 
not mulching.
Adjustments
Cutting Height
There is a cutting height adjustment lever located above the 
front and rear right wheel.
1. Pull the height adjustment lever towards wheel (unit will 
tend to fall when lever is moved outward).
2. Move lever to desired position for a change in cutting 
height. See Figure 3-10 and Figure 3-11.
Low Wheel
3
2
1
2
3
1
Lowe
r
Lower
Higher
Higher
Figure 3-10
b. Slip plastic channel of grass bag over hooks on the 
frame. See Figure 3-7.
B
A
Figure 3-7
2. Follow steps below to attach grass catcher:
a. Lift rear discharge door.
b. Place grass catcher into the slots in the handle 
brackets as shown in Figure 3-8. Let go of discharge 
door so that it rests on the grass catcher.
A
B
B
Figure 3-8
To remove grass catcher, lift rear discharge door on the mower. 
Lift grass catcher up and of the slots in the handle brackets. 
Release rear discharge door to allow it to close rear opening of 
mower.
Side Discharge Chute
Your mower is shipped as a mulcher. To convert to side discharge, 
make sure grass catcher is off of the unit and rear discharge door 
is closed. 
SECTION 3 — ASSEMBLY & SET-UP  
						

							12
NOTE: For mowers with low wheels, the height adjustment 
levers move in the opposite direction to adjust; for those 
with high wheels, the levers move in the same direction.
3
2
1
2
3
1
Lowe
r
Lower
Higher
Higher
High Wheel
Figure 3-11
3. Release lever towards deck.
IMPORTANT: Both the front and rear wheels must be 
placed in the same relative position. For rough or uneven 
lawns, move the height adjustment levers to a higher 
position. This will stop scalping of grass.
Handle Pitch
For convenience of operation, you may adjust the pitch of the 
handle as follows:
1. Remove wing nuts and carriage bolts from handle. See 
Figure 3-12.
Figure 3-12
2. Position the handle in one of the three positions that is 
most comfortable. See Figure 3-12 inset.
3.  Secure into position with wing nuts and carriage bolts 
removed earlier.
Drive Control
The adjustment wheel is located in the drive control handle 
housing and is used to tighten or loosen the drive belt. You will 
need to adjust the drive control if the mower does not propel 
itself with the drive control engaged or if the mower’s wheels 
hesitate with the drive control engaged. If either of these 
conditions occur, rotate adjustment wheel clockwise to tighten 
cable or counterclockwise to loosen the cable. See Figure 3-13.
Tighten
Loosen
Figure 3-13
Set-Up
Gas and Oil Fill-Up
Refer to the separate engine owner’s manual for additional 
engine information.
1.  Add oil provided before starting unit for the first time out 
of the box. 
2. Service the engine with gasoline as instructed in the 
separate engine owner’s manual.
WARNING: Use extreme care when handling 
gasoline. Gasoline is extremely flammable and the 
vapors are explosive. Never fuel the machine 
indoors or while the engine is hot or running. 
Extinguish cigarettes, cigars, pipes and other 
sources of ignition. 
SECTION 3 — ASSEMBLY & SET-UP  
						

							13
Blade Control
The blade control is attached to the upper handle of the mower. 
Depress and squeeze it against the upper handle to operate the 
unit. Release it to stop engine and blade.
WARNING: This blade control is a safety device. 
Never attempt to bypass its operations.
Drive Control
The drive control is located on top of the upper handle and is 
used to engage the drive. Squeeze it against the upper handle 
to engage the drive; release it to slow down or stop mower from 
propelling.
Cutting Height Adjustment Lever
One adjustment lever is located on the right rear wheel and one 
is located on the right front wheel. Both levers have to be at the 
same relative position to ensure a uniform cut. To adjust the 
cutting height, refer to the “Assembly & Set-Up” Section.
Deck Wash
Your mower’s deck is equipped with a water port on its surface 
as part of its deck wash system. Use the deck wash to rinse grass 
clippings from the deck’s underside.
Side Discharge Chute
Your mower is shipped as a mulcher. To discharge the grass 
clippings to the side instead, follow the instructions in the 
“Assembly & Set-Up” section to attach the side discharge chute.
WARNING: Keep hands and feet away from the 
chute area on cutting deck. Refer to warning label 
on the unit.
Recoil Starter
The recoil starter is attached to the right upper handle. Stand 
behind the unit and pull the recoil starter rope to start the unit.
Electric Starter Push Key (If Equipped)
The electric starter push key is located on the right side of the 
upper handle. It is both a removable key and push button and is 
only provided on electric start models.
Blade Co ntrol
Recoil Star ter
Deck WashCutting Height 
Adjustment  
Leve r
Cutting Height 
A djustment  
Leve r
Side Discharge 
Chute
Drive Co
ntrol
Electric Starter 
Push  Key†
† If Equipped
Figure 4-1
Controls and Features4  
						

							14
Starting Engine
WARNING: Be sure no one other than the operator 
is standing near the lawn mower while starting 
engine or operating mower. Never run engine 
indoors or in enclosed, poorly ventilated areas. 
Engine exhaust contains carbon monoxide, an 
odorless and deadly gas. Keep hands, feet, hair and 
loose clothing away from any moving parts on 
engine and lawn mower.
Follow the set of instructions pertaining to your unit. Refer to 
engine manual for help with the engine.
Briggs & Stratton/MTD Engine:
1. Insert plastic Electric Start Push Key into starter housing 
located on the right side of upper handle until it snaps in 
place. (Electric Start units only)
2. Standing behind the mower, squeeze the blade control 
against upper handle. See Figure 5-1.
3. Recoil Start:  Holding these two handles together firmly, 
grasp recoil starter handle and pull rope out with a rapid, 
continuous, full arm stroke. See Figure 5-1. Keeping a firm 
grip on the starter handle, let the rope rewind slowly. 
Repeat until engine cranks. Let the rope rewind each time 
slowly.  
Electric Start (If Equipped): Push the electric starter push 
key to start the engine. See Figure 5-1.
NOTE:  Electric starter is equipped with an internal 
circuit breaker. If unit fails to start when starter button 
is depressed, wait one minute for breaker to reset, then 
attempt to start again.
Honda Engine:
1. Place the fuel valve lever found on the left side of the 
engine into the ON (OPEN) position. See Figure 5-2.
2. Standing behind the mower, squeeze the blade control 
against upper handle.
3. Holding these two handles together firmly, grasp recoil 
starter handle and pull rope out with a rapid, continuous, 
full arm stroke. See Figure 5-2. Keeping a firm grip on the 
starter handle let the rope rewind slowly. Repeat until 
engine cranks. Let the rope rewind each time slowly.
Stopping Engine
1. Release blade control to stop the engine and blade.
2. Remove Electric Start Push Key if mower is to be left 
unattended, stored, or serviced (Electric Start units only) . 
To remove key, grasp the key’s top push button and pull 
it straight up and out. Keep key in a safe place out of the 
reach of children. 
WARNING: Wait for the blade to stop completely 
before performing any work on the mower or to 
remove the grass catcher.
3
3
2
1
Figure 5-1
OFF
ON
1
2
3
Figure 5-2
Operation5  
						

							15
Using Your Lawn Mower
Be sure lawn is clear of stones, sticks, wire, or other objects 
which could damage lawn mower or engine. Such objects could 
be accidently thrown by the mower in any direction and cause 
serious personal injury to the operator and others.
1. Once the engine is running, squeeze the drive control 
against the upper handle to propel mower.
WARNING: The operation of any lawn mower can 
result in foreign objects being thrown into the eyes, 
which can damage your eyes severely. Always wear 
safety glasses while operating the mower, or while 
performing any adjustments or repairs on it.
Using as Mulcher
For mulching grass, remove the grass catcher and allow the rear 
discharge door  to close the rear opening of mower. For effective 
mulching, do not cut wet grass. If the grass has been allowed to 
grow in excess of four inches, mulching is not recommended. Use 
the grass catcher to bag clippings instead.
Using Grass Catcher
You can use the grass catcher to collect clippings while you are 
operating the mower.
1. Attach grass catcher following instructions in the 
“Assembly & Set-Up” section. Grass clippings will 
automatically collect in bag as you run mower. Operate 
mower till grass bag is full.
2. Stop engine completely by releasing the blade control. 
Make sure that the unit has come to a complete stop.
3.  Lift discharge door and pull grass bag up and away from 
the mower to remove the bag. Dispose of the grass 
clippings and reinstall the bag when complete.
WARNING: If you strike a foreign object, stop the 
engine. Remove wire from the spark plug, 
thoroughly inspect mower for any damage, and 
repair damage before restarting and operating. 
Extensive vibration of mower during operation is an 
indication of damage. The unit should be promptly 
inspected and repaired. 
SECTION 5 — OPERATION  
						

							16
Maintenance
General Recommendations
• Always observe safety rules when performing any 
maintenance.
• The warranty on this lawn mower does not cover items that 
have been subjected to operator abuse or negligence. To 
receive full value from warranty, operator must maintain 
the lawn mower as instructed here.
• Changing of engine-governed speed will void engine 
warranty.
• All adjustments should be checked at least once each 
season.
• Periodically check all fasteners and make sure these are 
tight.
WARNING: Always stop engine, remove Electric 
Start Push Key (if equipped), allow engine to cool, 
disconnect spark plug and ground against engine 
before performing any type of maintenance on your 
machine.
Lubrication
1. Lubricate pivot points on the blade control at least once 
a season with light oil. This control must operate freely in 
both directions. See Figure 6-1.
Figure 6-1
2. The transmission is pre-lubricated and sealed at the factory 
and does not require lubrication.
3.  Follow the accompanying engine manual for lubrication 
schedule and instruction for engine lubrication.
Deck Care
Clean underside of the mower deck after each use to prevent 
build-up of grass clippings or other debris. Follow steps below 
for this job.
1. Disconnect spark plug wire. Drain gasoline from lawn 
mower or place a piece of plastic under the gas cap.
2. Tip mower so that it rests on the housing. Keep the side 
with the air cleaner facing up. Hold mower firmly.
WARNING: Never tip the mower more than 90º in 
any direction and do not leave the mower tipped for 
any length of time. Oil can drain into the upper part 
of the engine causing a starting problem.
3.  Scrape and clean the underside of the deck with a suitable 
tool. 
4. Put the mower back on its wheels on the ground. If you had 
put plastic under the gas cap earlier, make sure to remove it 
now.
Maintenance & Adjustments6  
						

							17
Deck Wash
Your mower’s deck may be equipped with a water port on its 
surface as part of its deck wash system.
Use the deck wash to rinse grass clippings from the deck’s 
underside and prevent the buildup of corrosive chemicals. 
Complete the following steps AFTER EACH MOWING:
1. Push the mower to a level, clear spot on your lawn, near 
enough for your garden hose to reach.
CAUTION: Make certain the mower’s discharge 
chute is directed AWAY from your house, garage, 
parked cars, etc. 
2. Thread the hose coupler (packaged with your mower’s 
Operator’s Manual) onto the end of your garden hose.
3.  Attach the hose coupler to the water port on your deck’s 
surface. See Figure 6-2.
Figure 6-2
4. Turn the water on.
5. Start the engine as described in the Operation section.
6. Run the engine for a minimum of two minutes, allowing 
the underside of the cutting deck to thoroughly rinse.
7. Release blade control to stop the engine and blade.
8. Turn the water off and detach the hose coupler from the 
water port on your deck’s surface.
After cleaning your deck, restart the mower. Keep the engine 
and blade running for a minimum of two minutes, allowing the 
underside of the cutting deck to thoroughly dry.
Engine Care
A list of key engine maintenance jobs required for good 
performance by the mower is given below. Follow the 
accompanying engine manual for a detailed list and instructions.
• Maintain oil level as instructed in engine manual.
• Service air cleaner every 25 hours under normal conditions. 
Clean every few hours under extremely dusty conditions. 
Poor engine performance and flooding usually indicates 
that the air cleaner should be serviced. To service the air 
cleaner, refer to the engine manual.
• Clean spark plug and reset the gap once a season. Spark 
plug replacement is recommended at the start of each 
mowing season. Check engine manual for correct plug 
type and gap specifications.
• Clean engine regularly with a cloth or brush. Keep the 
top of the engine clean to permit proper air circulation. 
Remove all grass, dirt, and combustible debris from muffler 
area.
• Engines stored between 30 and 90 days need to be treated 
with a gasoline stabilizer such as STA-BIL® to prevent 
deterioration and gum from forming in fuel system or on 
essential carburetor parts. 
SECTION 6 — MAINTENANCE & ADJUSTM ENT S  
						

							18
Blade Care
WARNING: When removing the cutting blade for 
sharpening or replacement, protect your hands with 
a pair of heavy gloves or use a heavy rag to hold the 
blade. 
Periodically inspect the blade adapter for cracks, especially if you 
strike a foreign object. Replace when necessary. Follow the steps 
below for blade service.
1. Disconnect spark plug boot from spark plug and remove 
Electric Start Push Key (if equipped). Turn mower on its side 
making sure that the air filter and the carburetor are facing 
up (not pointed toward the ground).
2. Remove the bolt and the blade bell support which hold the 
blade and the blade adapter to the engine crankshaft. See 
Figure 7-1.
Blade
Blade 
Adapter
Bolt
Blade Bell 
Support
Figure 7-1
3.  Remove blade and adapter from the crankshaft. See Figure 
7-1.
4. Remove blade from the adapter for testing balance. 
Balance the blade on a round shaft screwdriver to check. 
Remove metal from the heavy side until it balances evenly. 
When sharpening the blade, follow the original angle of 
grind. Grind each cutting edge equally to keep the blade 
balanced.
WARNING: An unbalanced blade will cause 
excessive vibration when rotating at high speeds. It 
may cause damage to mower and could break 
causing personal injury.
5. Lubricate the engine crankshaft and the inner surface of 
the blade adapter with light oil. Slide the blade adapter 
onto the engine crankshaft. Place the blade on the adapter 
such that the side of the blade marked “Bottom” (or with 
part number) faces the ground when the mower is in the 
operating position. Make sure that the blade is aligned and 
seated on the blade adapter flanges. See Figure 7-1 inset.
6. Place blade bell support on the blade. Align notches on the 
blade bell support with small holes in blade.
7. Replace hex bolt and tighten hex bolt to torque: 450 in. lbs. 
min., 600 in. lbs. max.
To ensure safe operation of your mower, periodically check the 
blade bolt for correct torque.
Belt Care
NOTE: Several components must be removed in order to change 
the mower’s belt. See an authorized Service Dealer to have your 
belt replaced.
Service7  
						

							19
Charging Battery (If Equipped)
WARNING: The battery contains corrosive fluid 
and toxic material; handle with care and keep away 
from children. Do not puncture, disassemble, 
mutilate or incinerate the battery. Explosive gases 
could be vented during charging or discharging. Use 
in a well ventilated area, away from sources of 
ignition.
NOTE: The special designed plug on the charger will only fit into 
the plug on the battery box.
1. Unhinge the cover seal and plug the battery charger into 
the port on the side of the battery housing. See Figure 7-4.
1
2
Figure 7-4
2. Insert the battery charger plug into a standard 120 volt 
household outlet. Charge battery for 8 to 10 hours before 
initial use. Do not charge longer than 12 hours. The battery 
should only need to be charged upon initial setup, at the 
end of the season, after any other extended periods of 
non-use, and as needed.
NOTE: If you frequently stop and restart the mower 
during each cut throughout the season (for instance when 
bagging), more frequent charging may be necessary.
3.  After charging, disconnect charger plug from outlet first, 
then disconnect charger lead from battery and reattach 
cover seal.
IMPORTANT: Do not remove the battery pack from 
the electric starter housing for any reason other than 
replacement.
IMPORTANT: Always plug charger lead into battery pack 
lead first, and then insert battery charger plug into 120 
volt standard household outlet. Follow this order of action 
every time you charge the battery.
Replacing Battery (If Equipped)
WARNING: Batteries contain sulfuric acid which 
may cause burns. Do not short circuit or mutilate 
batteries in any way. Do not put batteries in fire as 
these may burst or release toxic materials.
1. Unhinge cover seal and lift off battery cover.
2. Remove positive and negative leads from battery, and pull 
up on battery to remove.  See Figure 7-2.
Figure 7-2
3.  Replace with new battery. Connect the positive lead (red) 
to the positive side of the battery pack, then connect the 
negative lead (black) to the negative side. See Figure 7-3.
(+) P ositive  
T erminal
(-) Negati ve 
T erminal
Figure 7-3
4. Reattach battery cover and cover seal. 
SECTION 7 — SERVICE  
						

							20
Off-Season Storage
The following steps should be taken to prepare your lawn mower 
for storage.
• Clean and lubricate mower thoroughly as described in the 
lubrication instructions.
• Coat mower’s cutting blade with chassis grease to prevent 
rusting.
• Refer to engine manual for correct engine storage 
instructions.
• Secure side discharge chute to handle as shown in Figure 
7-5.
Figure 7-5
• Store mower in a dry, clean area. Do not store next to 
corrosive materials, such as fertilizer.
When storing any type of power equipment in a poorly 
ventilated or metal storage shed, care should be taken to 
rust-proof the equipment. Using a light oil or silicone, coat the 
equipment, especially cables and all moving parts of your lawn 
mower before storage.
Battery (If Equipped)
• The battery must be stored with a full charge. Extended 
storage of a discharged battery will reduce life and capacity 
of the battery. For optimal battery life, charge the battery 
once per month while in storage.
• Remove Electric Start Push key and keep in a safe place out 
of the reach of children. 
SECTION 7— SERVICE