Toro Z MASTER 2000 Series Service Manual page 26

General Troubleshooting (continued)
Problem
The engine overheats
The mower pulls to the left or right
(with levers fully forward)
The machine does not drive
The machine vibrates abnormally
The machine produces an uneven
cutting height
The blades do not rotate
Troubleshooting: General Troubleshooting
Possible Cause
The engine load is excessive.
The oil level in the crankcase is low.
The cooling fins and the air passages
above the engine are plugged.
The tracking needs adjustment.
The tire pressure in the drive tires is
not correct.
The bypass valves are not closed tight.
The pump belt is worn, loose or broken.
The pump belt is off a pulley.
The idler spring is broken or missing.
The hydraulic oil level is low or too hot.
The cutting blade(s) is/are bent or
unbalanced.
The blade mounting bolt is loose.
The engine mounting bolts are loose.
The engine pulley, idler pulley, or blade
pulley is loose.
The engine pulley is damaged.
The blade spindle is bent.
The motor mount is loose or worn.
The blade(s) is/are not sharp.
The cutting blade(s) is/are bent.
The mower deck is not level.
The underside of mower is dirty.
The tire pressure is not correct.
The blade spindle is bent.
The mower deck belt is damaged,
worn, loose, or broken.
The mower deck belt is off the pulley.
The pump drive belt is worn, loose or
broken.
The idler spring is broken or missing.
Page 3–4
Corrective Action
Reduce the ground speed.
Add oil to the crankcase.
Remove the obstruction and thoroughly
clean cooling fins and the air passages.
Adjust the tracking.
Adjust the tire pressure in the drive
tires.
Tighten the bypass valves.
Change the belt.
Change the belt.
Replace the spring.
Add hydraulic oil to the reservoirs or let
it cool down.
Install new cutting blade(s).
Tighten the blade mounting bolt.
Tighten the engine mounting bolts.
Tighten the appropriate pulley, check
to make sure idler springs are not over
stretched.
Replace the engine pulley.
Replace the spindle.
Check the mounting bolts.
Sharpen the blade(s).
Install new cutting blade(s).
Level the mower deck from side-to-
side and front-to-rear.
Clean the underside of the mower.
Adjust the tire pressure.
Replace the spindle.
Install a new deck belt.
Install the mower belt on the deck
pulley and check the idler pulley, idler
arm, and spring for correct position and
function.
Check the belt tension or install a new
belt.
Replace the spring.
2000 Series Z MASTER® Service Manual
3438-778 Rev A