8 - TROUBLESHOOTING
8 - TROUBLESHOOTING###_8_###
Symptom(s)
Engine - Troubleshooting
Problem
Possible Cause Correction
The start motor does not
rotate with the key switch
in the (START) position.
Low battery charge
Charge or replace
Loose battery or starter cable terminals Tighten the terminal
Key switch faulty
Repair or replace switch
Safety start switch not completing circuit Depress clutch pedal fully
PTO safety switch is not in "OFF" position Place PTO switch in "OFF" position
Starter motor faulty
Repair or replace starter motor
The start motor rotates
but the engine does not
start
Low battery charge
Charge or replace battery
Air in fuel system
Bleed out the air
Fuel îš¿lter clogged Clean or replace the îš¿lter
Engine speed is irregular
Air in fuel system Bleed the fuel system
Fuel îš¿lter clogged Clean or replace the îš¿lter
Injection nozzle clogged Repair or replace nozzle
Fuel leakage
Repair fuel system
Engine stops suddenly
during operation
Fuel shortage
Add fuel and bleed air from fuel system
Faulty fuel injector
Repair or replace injector
Internal parts of engine seized due to lack
of lubrication
Repair engine as needed
Engine stops suddenly
during operation
Fuel shortage
Add fuel and bleed air from fuel system
Faulty fuel injector
Repair or replace injector
Internal parts of engine seized due to lack
of lubrication
Repair engine as needed
Engine overheating
Lack of coolant
Add coolant as needed
Fan belt slipping or belt is broken Adjust belt tension or replace belt
Dirt attached to the radiator or prescreen
Clean radiator îš¿ns or screen as needed
The color of exhaust
smoke is white
Low engine operating temperature Allow engine to obtain higher operating
temperature
Engine burning engine oil Repair engine as needed
Engine coolant entering engine exhaust Repair engine as needed
The color of exhaust gas
is black.
Air îš¿lter clogged Clean or replace engine air îš¿lter
Excessive fuel supply Contact authorized dealer
Faulty fuel injector Contact authorized dealer
Low engine power Fuel injector nozzle clogged Repair injector as needed
Carbon accumulation on valve seat
Repair valve and seats as needed
Incorrect valve gap adjustment Adjust valve gap to correct amount
Lack of fuel supply Check fuel system for restriction
Air îš¿lter clogged Clean or replace air îš¿lter
Instrument panel engine
oil pressure indicator light
is "ON" during operation.
Lack of engine oil
Add engine oil as needed
Low viscosity of engine oil
Replace oil with proper viscosity type
Faulty pressure switch Replace switch
Faulty engine oil pump Repair oil pump as needed
Engine oil îš¿lter clogged Replace the îš¿lter
Instrument panel battery
charging indicator is "ON"
during operation.
Bad electrical connection
Check battery terminals, ground, and repair
as needed
8-1
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