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Start engine and place shift lever in the sixth speed 
position. Stop engine and disconnect spark plug 
wire and ground it against engine.

Loosen hex nut which secures the adjustable cable 
bracket. See Figure 16.

Push back on the adjustable cable bracket and 
tighten hex nut.

Engine Adjustments

Refer to the engine manufacturer’s Owner’s/Operator’s 
Manual, packed separately with your unit, for these 
adjustments.

SECTION 7:  MAINTAINING YOUR LAWN MOWER

Cleaning Mower

The underside of the mower deck should be cleaned 
after each use to prevent any build-up of debris. If 
allowed to accumulate, it will cause rust and corrosion.

NOTE:  We do not recommend the use of pressure
washers or garden hose to clean your unit. These may
cause damage to pulleys, bearings, or the engine. The
use of water will result in shortened life and reduce
serviceability.

Disconnect spark plug wire.

Drain the gasoline from the lawn mower, or place a 
piece of plastic under the gas cap.

Tip the mower so that it rests on the housing. Keep 
the side with the air cleaner facing up. Hold the 
mower firmly.

Scrape and clean the underside of the deck with a 
suitable tool. Do not spray with water. 

Put the mower back on its wheels on the ground. If 
you had put plastic under the gas cap, make sure to 
remove it now.

Engine Care

A list of key maintenance jobs required for good 
performance by the mower is given below. Follow the 
engine manufacturer’s Owner’s/Operator’s Manual, 
packed separately with your unit, for a detailed list and 
instructions. 

Change engine oil regularly, as instructed in the 
engine manual. Check oil level before starting 
engine every time. Change oil while the engine is 
warm, not hot or cold.

Service foam filter in the air cleaner every 25 hours 
of use and replace the paper filter component every 
100 hours. You may have to service the air filter 
more frequently if you are operating the mower 
under extremely dusty conditions.

Clean the engine periodically. Remove dirt and 
debris with a cloth or brush. 

Clean the spark plug and reset the gap to.030” at 
least once a season. Refer to the engine manual for 
correct spark plug type.

Inspect muffler periodically, and replace if 
necessary. Damaged mufflers or spark arresters 
can create a fire hazard. Make sure to avoid muffler 
and surrounding areas while the mower engine is 
hot because temperature of these areas of the 
engine may exceed 150

o

 F. 

WARNING: 

Always stop the engine and 

disconnect the spark plug wire before 
performing any maintenance work or 
adjustments on your lawn mower.

WARNING: 

Never tip the mower more than 

90 degrees in any directions 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.

Summary of Contents for 12A-998Q766

Page 1: ...h a spark arrester meeting applicable local or state laws if any If a spark arrester is used it should be maintained in effective working order by the operator In the State of California the above is...

Page 2: ...rts Choose from the options below Visit troybilt com for many useful suggestions Click on Customer Support button and you will get the four options reproduced here Click on the appropriate button and...

Page 3: ...rotating parts or under the cutting deck Contact with the blade can amputate hands and feet 9 A missing or damaged discharge cover can cause blade contact or thrown object injuries 10 Many injuries oc...

Page 4: ...ooting or balance 2 Do not mow slopes greater than 15 degrees as shown on the slope gauge 3 Do not mow on wet grass Unstable footing could cause slipping Children Tragic accidents can occur if the ope...

Page 5: ...to improper performance and compromise safety 4 Mower blades are sharp and can cut Wrap the blade or wear gloves and use extra caution when servicing them 5 Keep all nuts bolts and screws tight to be...

Page 6: ...N T I N G A 1 5 S L O P E WARNING Do not mow on inclines with a slope in excess of 15 degrees a rise of approximately 2 1 2 feet every 10 feet A riding mower could overturn and cause serious injury If...

Page 7: ...er Assembling Handle Lift up and pull back on the upper handle to raise the handle into the operating position See Figure 3 Make certain the lower handle is seated securely into the handle bracket ass...

Page 8: ...u want to mulch the grass clippings For bagging purposes you will have to attach the grass bag and its adapter in place of the mulching baffle Remove three wing nuts holding the mulching baffle or sid...

Page 9: ...em Release the clutch control to disengage the drive system Release the clutch control to slow down when approaching an obstacle making a turn or stopping Shift Lever The shift lever is located on the...

Page 10: ...r will automatically revert to the RUN position Refer to the engine manual for further details Your lawn mower is equipped with a constant speed throttle which is set at full throttle for best perform...

Page 11: ...pe out of the way of the bag Continue to hold the lower handle and raise the rear of the grass bag up toward your chest The grass bag will open and the grass clippings will disperse When replacing the...

Page 12: ...lock pins in the larger holes to lock the wheels for straight ahead operation Place pins in smaller holes to allow casters to rotate freely for turning Drive Clutch Control The adjustment wheel is loc...

Page 13: ...to remove it now Engine Care A list of key maintenance jobs required for good performance by the mower is given below Follow the engine manufacturer s Owner s Operator s Manual packed separately with...

Page 14: ...g sure that the air filter and the carburetor are up Remove the bolt and the blade bell support which hold the blade and the blade adapter to the engine crankshaft See Figure 18 Remove the blade and t...

Page 15: ...gainst the engine Drain the fuel tank or place a piece of plastic beneath the cap to prevent gasoline leakage Place shift lever in the first position and tip the mower on its side with air filter faci...

Page 16: ...assembly Pinch both sides of the belt together so that the belt is not in the pulley groove and the lower pulley can be pushed towards the engine See Figure 24 Figure 24 Pivot the control arm back to...

Page 17: ...4 Clean fuel line 5 Clean adjust gap or replace 6 Wait a few minutes to restart do not prime Engine runs erratic 1 Spark plug wire loose 2 Blocked fuel line or stale fuel 3 Vent in gas plugged 4 Wate...

Page 18: ...ute non OEM V Belt can be dangerous by not disengaging completely 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 21 27 31 32 33 34 35 36 37 38 39 40 41 42 43 44 48 49 51 50 52 53 54 56 55 100 62 63 64...

Page 19: ...53 738 0137A Shld Screw 340 ID x 285 OD 54 748 0318 Wheel Rachet 55 736 0270 Bell Washer 265 ID x 75 OD 56 710 0751 Hex Cap Screw 1 4 20 x 620 57 737 3000 Grease Fitting 58 736 0931 Flat Washer 203 ID...

Page 20: ...l 998Q 1 2 3 4 5 6 7 7 8 9 10 11 12 13 14 14 7 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 30 31 32 33 34 35 36 37 38 39 40 41 42 44 45 46 47 14 50 51 52 53 54 55 56 57 48 59 60 63 62 61 49 64 58...

Page 21: ...rew 1 4 20 x 625 28 714 0474 Cotter Pin 29 712 3025 Hex Jam Nut 5 16 24 30 736 0425 Bell Washer 325 ID x 930 OD 31 756 0656 Pulley 32 736 3084 Flat Washer 510 ID x 1 120 OD 33 712 0896 Hex Jam Nut 1 4...

Page 22: ...22 NOTES...

Page 23: ...23 NOTES...

Page 24: ...ts and normal deterioration of the exterior finish due to use or exposure d Service completed by someone other than an authorized service dealer e Troy Bilt does not extend any warranty for products s...

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