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PROBLEM
Engine loses power.
g
Engine overheats.
g
Machine does not drive.
Machine does not drive up hills or
inclines.
Machine moves slowly in neutral.
Machine drive is too aggressive.
Mower lifts when drive is engaged.
Abnormal vibration.
POSSIBLE CAUSES
1.
Engine load is excessive.
2.
Air cleaner is dirty.
3.
Oil level in crankcase is low.
4.
Cooling fins and air passages
under engine blower housing
are plugged.
5.
Spark plug is pitted, fouled, or
gap is incorrect.
6.
Vent hole in fuel cap is
plugged.
7.
Dirt in fuel filter.
8.
Dirt, water, or stale fuel is in
fuel system.
1.
Engine load is excessive.
2.
Oil level in crankcase is low.
3.
Cooling fins and air passages
under engine blower housing
are plugged.
1.
Hydrostatic fluid level low.
2.
Traction belt is worn, loose or
broken.
3.
Traction belt is off pulley.
1.
By-pass valve is adjusted too
far open.
1.
Neutral is mis-adjusted.
2.
Return spring is broken or
missing.
3.
Linkage is dirty or bent.
1.
By-pass valve is adjusted too
far closed.
1. Cutting blade(s) is/are bent or
unbalanced.
2. Blade mounting bolt is loose.
3. Engine mounting bolts are
loose.
4. Loose engine pulley, idler
pulley, or blade pulley.
5. Engine pulley is damaged.
6. Blade spindle bent.
48
CORRECTIVE ACTION
1.
Reduce ground speed.
2.
Clean air cleaner element.
3.
Add oil to crankcase.
4.
Remove obstruction from
cooling fins and air passages.
5.
Install new, correctly gapped
spark plug.
6.
Clean or replace the fuel cap.
7.
Replace fuel filter.
8.
Contact Authorized Service
Dealer.
1.
Reduce ground speed.
2.
Add oil to crankcase.
3.
Remove obstruction from
cooling fins and air passages.
1.
Fill hydrostatic fluid tank.
2.
Change Belt.
3.
Change Belt.
1.
Adjust by-pass valve
1.
Adjust hydro pump neutral.
2.
Replace return spring.
3.
Clean and lubricate linkage.
Replace bent or worn parts.
1.
Adjust by-pass valve
1. Install new cutting blade(s).
2. Tighten blade mounting bolt.
3. Tighten engine mounting bolts.
4. Tighten the appropriate pulley.
5. Contact Authorized Service
Dealer.
6. Contact Authorized Service
Dealer.
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