General T roubleshooting (continued)
Problem
Possible Cause Corrective Action
The engine load is excessive. Reduce the ground speed or raise
height-of-cut.
The oil level in the crankcase is low . Add oil to the crankcase.
The engine overheats.
The cooling ns and the air passages
above the engine are plugged.
Remove the obstruction and thoroughly
clean the cooling ns and the air
passages.
The tracking needs adjustment. Adjust the tracking.
Both smart speed shift forks are not on
the motion control linkage.
Remove the smart speed shift fork
realign and install.
The mower pulls to the left or right
(with levers fully forward).
The tire pressure in the drive tires is
incorrect.
Adjust the tire pressure in the drive
tires.
The bypass rods are in the manual
move position.
Place the bypass rods into the drive
position.
The drive belt is worn, loose, of f a
pulley , or broken.
Replace the drive belt.
The tensioner spring is broken or
missing.
Replace the spring.
The machine does not drive.
The hydraulic oil level is low in the
transaxle.
Add hydraulic oil to the transaxle.
The cutting blade(s) is/are bent or
unbalanced.
Install new cutting blade(s).
The blade mounting bolt is loose. T ighten the blade mounting bolt.
The engine mounting bolts are loose. T ighten the engine mounting bolts.
The engine pulley , idler pulley , or blade
pulley is loose.
T ighten the appropriate pulley , check
to make sure idler springs are not over
stretched.
The engine pulley is damaged. Replace the engine pulley .
The blade spindle is bent. Replace the spindle.
The machine vibrates abnormally .
The motor mount is loose or worn.
Check the mounting bolts.
The blade(s) are not sharp. Sharpen the blade(s).
The cutting blade(s) are bent. Install new cutting blade(s).
The mower deck is not level.
Level the mower deck from side-to-side
and front-to-rear .
The underside of the mower is dirty . Clean the underside of the mower .
The tire pressure is incorrect. Adjust the tire pressure.
The machine produces an uneven
cutting height.
The blade spindle is bent. Replace the spindle.
The mower deck belt is damaged,
worn, loose, or broken.
Install a new deck belt.
The mower deck belt is of f the pulley .
Install the mower belt on the deck
pulley and check the idler pulley , idler
arm, and spring for the correct position
and function.
The blades do not rotate.
The idler spring is broken or missing. Replace the spring.
T roubleshooting: General T roubleshooting
Page 3–4 2000 Series Z MASTER®Service Manual
3460-328 Rev A
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