Toro ProLine 30187 Operator's Manual page 42

Troubleshooting
PROBLEM
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.
40
POSSIBLE CAUSES
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.
CORRECTIVE ACTION
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