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Problem: Engine will not turnover or start.
Fuel Injected Models: Malfunction
in fuel injection system.
See authorized service dealer.
Problem: Engine starts hard or runs poorly.
Cause Remedy
Fuel mixture too rich. 1.) Clean air filter. 2.) Carburated
Models: Check choke adjustment.
Fuel Injected Models: See
authorized dealer.
Spark plug(s) faulty, fouled or
incorrectly gapped.
Clean and gap or replace. See
engine manual.
Problem: Engine knocks.
Cause Remedy
Low oil level. Check / Add oil as required.
Using wrong grade oil. See engine manual.
Problem: Excessive oil consumption.
Cause Remedy
Engine running too hot. Clean engine fins, blower screen,
and air cleaner.
Using wrong weight oil. See engine manual.
Too much oil in crankcase. Drain excess oil
Problem: Engine exhaust is black.
Cause Remedy
Dirty air filter. Replace air filter. See engine
manual.
Carbureted Models: Engine choke
control is in closed position.
Move choke control to open position.
Problem: Malfunction Indicator Lamp (M.I.L.)
is flashing (Fuel Injected Models only).
Cause Remedy
Problem with the fuel injection
system.
See your authorized service dealer.
Problem: Engine runs but mower will not drive.
Cause Remedy
Transmissions are not engaged. Engage the transmissions. See
Pushing the Rider by Hand.
Belt is broken. See Transmission Drive Belt
Replacement.
Drive belt slips. See problem and cause below.
Brake is not fully released. See authorized service dealer.
Problem: Unit drive belt slips.
Cause Remedy
Pulleys or belt greasy or oily. Clean as required.
Tension too loose Adjust spring tension. See
Transmission Drive Belt
Replacement.
Belt stretched or worn Replace belt.
Problem: Brake will not hold.
Cause Remedy
Brake is incorrectly adjusted. See Parking Brake Adjustment.
Braking pads in transmissions worn. See authorized dealer.
Problem: Unit steers or handles poorly.
Cause Remedy
Steering linkage is loose. Check and tighten any loose
connections.
Improper tire inflation See Checking Tire Pressures.
Troubleshooting the Mower
Problem: Mower will not raise.
Cause Remedy
Lift linkage not properly attached or
damaged.
See authorized dealer.
Problem: Engine stalls easily with mower engaged.
Cause Remedy
Engine speed to slow. Set to full throttle.
Ground speed too fast. Decrease ground speed.
Cutting height set too low. Increase the cutting height.
Discharge chute jamming with cut
grass.
Cut grass with discharge pointing
towards previously cut area.
Problem: Excessive mower vibration.
Cause Remedy
Blade mounting bolts are loose. Tighten to 120 ft.lbs (163 Nm).
Mower blades, arbors, or pulleys are
bent.
Check and replace as necessary.
Mower blades are out of balance. Remove, sharpen, and balance
blades. See Servicing the Mower
Blades.
Belt installed incorrectly. Reinstall belt correctly.
Problem: Excessive belt wear or breakage.
Cause Remedy
Bent or rough pulleys. Repair or replace.
Using incorrect belt. Replace with correct belt.
Incorrect belt tension. Adjust to correct tension.
Problem: Drive belt slips or fails to drive.
Cause Remedy
Incorrect belt tension. Adjust to correct tension.
Drive belt is broken. Replace with new belt.
Problem: Mower does not engage.
Cause Remedy
Electrical wiring damage. Locate & repair damaged wire.
Battery voltage too low. Recharge battery and check
alternator. See Battery Service.
Troubleshooting Common Cutting
Problems
Problem: Streaking
Streaking is when thin strips of uncut grass are left behind the mower.
Streaking is usually caused by operator error or poor blade maintenance.
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