Troubleshooting - Hunter H45DS Operator's Manual

Problem
Engine not starting
Engine starter not cranking
Engine speed erratic
Engine running rough
Engine overheating
Sudden increase in
Engine temperature
Hunter 45DS • Engines and Transmissions

Troubleshooting

Possible Cause
No fuel reaching engine
Improper starting procedures
Contaminated fuel
Discharged battery
Corroded battery terminals
Loose battery terminals
Bad starter switch
Hydrolock
Jammed "starter drive."
Pinched or clogged fuel lines
Contaminated fuel
Defective fuel pump
Idle speed too low
Faulty ignition system components
Clogged fuel filter
Pinched fuel lines
Clogged fuel lines
Blocked fuel vent
Cooling water seacock closed
Seacock pickup blocked
Collapsed water pump suction hose
Cooling water intake system blocked
Water intake hose leaking or rup-
tured
Water pump failure
Fuel tank vent blocked. Clean hose
and fitting to remove material. Make
sure hose is not pinched
Fuel line obstructed. Check fuel
lines. Make sure line is not pinched
Clogged engine fuel filter. Refer to
engine manual for instructions on
cleaning filter
Fuel supply valve closed at tank.
Open valve
Review starting procedures in engine
manual
Inspect for water or other contami-
nants in fuel. If contaminated, drain
tank and flush with fresh fuel
Recharge or replace battery
Clean battery terminals
Tighten connections
Test switch continuity. Replace
switch if required. See your dealer
for service
Replace switch
See instructions in this Section under
"Hydro-Lock". See your dealer imme-
diately
Loosen starter motor, then free stuck
gear
Replace line or remove obstruction
See your dealer for service
Drain fuel tank and lines. Flush with
clean fuel and replace fuel filters.
See your dealer for service
Have your dealer check pump
Check idle speed and adjust as
needed
See your dealer for service
Clean or replace filter
Straighten lines
Remove obstruction
Clean vent
Open seacock
Remove obstruction
Replace hose
Clean seacock strainer
Remove material blocking line
See your dealer for service
11.6
Solution