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1. ENGINE IDLES POORLY:
Carburetor maladjustment_________________________________________________readjust carburetor
Improper spark plug gap _______________________________________________check and re-gap plug
2. ENGINE BACKFIRES:
Carburetor maladjustment_________________________________________________readjust carburetor
3. ENGINE RUNS BUT POWER UNIT WON’T MOVE FORWARD
Drive belt loose or broken________________________________________________re-tension or replace
Pump shift arm disconnected _____________________________________________________reconnect
Hydrostatic reservoir oil low _________________________________________________________add oil
Pump bypass valve open________________________________________________put in closed position
Hydrostatic oil filter plugged_____________________________________________________replace filter
Bad pump or motor __________________________________________________________consult dealer
4. POWER UNIT LOSES POWER OR HYDROSTAT SYSTEM OVERHEATS
Hydrostatic oil reservoir too low ______________________________________________________add oil
Pump or motor damaged _____________________________________________________consult dealer
Hydrostatic oil reservoir blowing oil out cap _________________________overfilled or water contaminated
5. ENGINE STALLS WHEN BLADES ARE ENGAGED
Operator not on seat ____________________________________________________________sit on seat
Faulty interlock system _______________________________________________________consult dealer
Bad blade spindle bearing_____________________________________________________consult dealer
Deck drive belt not properly routed ___________________________________________________reroute
Blades blocked by foreign material ___________________________________________clean under deck
•See engine manual for engine adjustments
ENGINE ELECTRICAL TROUBLE SHOOTING
1. ENGINE WILL NOT TURN OVER:
Dead battery
Bad ground connection
Bad terminal connection at battery
Wiring harness plugs are not attached properly at
the key switch or the PTO switch
Bad parking brake switch
Bad safety interlock module
Bad PTO switch
TROUBLESHOOTING CHECK LIST
19
2. ENGINE WILL TURN OVER,
BUT WILL NOT START:
A. If there is spark at the plug:
No fuel
Bad fuel solenoid in engine
Bad electric fuel pump (Kawasaki only)
B. If there is no spark at the plug:
Make sure safety interlock system is sequenced:
PTO switch is off
Control levers in neutral position
Parking brake is on
Operator in seat
Check safety interlock switches:
Seat switch
Neutral switch
Bad ignition module on engine