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Section 8: Troubleshooting
ZT60i & ZT72i (S/N 748110+) Accu-Z
®
Zero Turn Mowers 357-552M
Table of Contents
2/06/14
Engine is overheating
Air intake screen or cleaning fins clogged. Clean screen and fins.
Not operating engine at rated speed. Increase engine speed to 3600 rpm.
Other causes. See Engine Operator’s Manual.
Low engine oil pressure
(Indicated by oil light being on while
engine is running.)
Low oil level. Add oil.
Oil diluted or too light. Change oil and check for source of
contamination.
High engine oil consumption
Other causes. See your dealer.
Mower is jerky when starting to
travel.
Steering linkage is bent or needs
adjustment.
Adjust linkage. See “Steering Adjustments”
on page 26.
Drive belt is slipping. Retention or replace drive belt.
Pulleys are worn or damage. Replace worn and damaged pulleys.
Transaxle is faulty. See your dealer.
Steering levers do not return to
neutral.
Steering linkage is out of adjustment. Adjust linkage. See “Steering Adjustments”
on page 26.
Steering linkage is bent, broken, or
missing.
Replace steering linkage.
See item 1 on page 26.
Transaxle neutral return spring is broken
or missing.
Replace transaxle neutral return spring.
Mower creeps when steering
control levers are in neutral.
Steering linkage is out of adjustment. Adjust linkage See “Steering Adjustments”
on page 26.
Mower circles or veers in one
direction.
Tires are not inflated properly. Inflate tires to the correct tire pressure.
Steering linkage is bent or needs
adjustment.
Adjust linkage See “Steering Adjustments”
on page 26.
Bypass assembly is sticking. See your dealer.
Mower travels only in one direction
Steering linkage is bent or needs
adjustment.
Repair or replace linkage.
Drive belt is slipping. Retention or replace drive belt.
Pulleys are worn or damage. Replace worn and damaged pulleys.
Transaxle is faulty. See your dealer.
Transaxle is noisy
Oil level in transaxle is low. Fill transaxle to the correct level.
Oil is contaminated. See your dealer.
Transaxle has some loose parts. See your dealer.
Bypass assembly is sticking.
Air is trapped in the hydraulic system. Purge transaxle of air or see your dealer.
Transaxle leaks oil
Seals, housing, or gaskets are damaged. See your dealer.
Air is trapped in hydraulic system. Purge transaxle of air or see your dealer.
Transaxles operates hot.
Hydro-drive faulty. See your dealer.
Not operating engine at rated speed. Increase engine speed to 3600 rpm.
Troubleshooting Chart
Symptoms Probable Causes Suggested Remedies