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Section 8: Troubleshooting
ZSR54, & ZSR60 Accu-Z Razor
®
Zero Turn Mowers 357-344M
Table of Contents
12/15/15
Loss of power or system will not
operate in either direction
Bypass valve is open
Close bypass valve
See “Moving Mower with Stalled Engine” on
page 18
Linkage bolt is loose or lost Replace linkage bolt
Bad ground drive belt and/or pump idler
pulley
Replace belt and/or idler pulley Tighten idler
pulley if loose
Loose, lost, or broken belt take-up rod Reattach or replace belt take-up rod
Restrictions in air cleaner Service air cleaner
Internal interference or leakage in Hydro-
Drive
See your dealer
Insufficient hydraulic oil supply
Check hydraulic oil level in expansion tank
and add oil if needed
Poor compression See your dealer
Steering linkage needs adjustment
Adjust linkage See “Seat Adjustment” on
page 24
Air in system Check filter & fittings
Other causes See Engine Operator’s Manual
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 oil pressure
(Indicated by oil light on while
engine is running.)
Low oil level Add oil
Oil diluted or too light
Change oil and check for source of
contamination
High oil consumption
Other causes See your dealer
Mower jerky when starting or
operates in one direction only
Steering control linkage needs
adjustment
Adjust linkage See “Steering Adjustments” on
page 23
Hydro-drive faulty See your dealer
Hydraulic system operates hot
Hydro-drive faulty See your dealer
Not operating engine at rated speed Increase engine speed to 3600 rpm
Steering levers do not return to
neutral
Steering linkage rods are out of
adjustment
Adjust linkage See “Steering Adjustments” on
page 23
Steering linkage rods are bent, broken,
or missing.
Replace steering linkage rods
See item 14 on page 41
Transaxle neutral return spring is broken
or missing
Replace transaxle neutral return spring
Mower creeps when steering
control levers are in neutral
Transaxle neutral return spring is broken
or missing
Replace transaxle neutral return spring
Mower circles or veers in one
direction
Steering linkage needs adjustment
Adjust linkage See “Steering Adjustments” on
page 23
Hydro-drive faulty See your dealer
Troubleshooting Chart
Symptoms Probable Causes Suggested Remedies