Multiquip WRS5200DFPU (KUBOTA WG972-GL-E3 DUAL FUEL) - Manual (Page 63)

wrs5200dfpu hYdrauLIC roLLer sCreed • operatIon manuaL — rev. #0 (08/18/14) — page 63
table 8. engine troubleshooting
Symptom Possible Problem Solution
Engine will not start.
Defective fuel pump? Replace fuel pump.
Fuel filter clogged? Replace fuel filter and clean tank.
Faulty fuel supply line? Replace or repair fuel line.
Compression too low?
Check piston, cylinder and valves.
Adjust or repair per engine repair
manual.
Fuel pump not working correctly? Repair or replace fuel pump.
Oil pressure too low? Check engine oil pressure.
Low starting temperature limit
exceeded
Comply with cold starting instructions
and proper oil viscosity.
Defective battery? Charge or replace battery.
At low temperatures engine will not
start.
Engine oil too thick?
Refill engine crankcase with correct
type of oil for winter environment.
Defective battery? Replace battery.
Engine fires but stops soon as starter is
switched off.
Fuel filter blocked? Replace fuel filter.
Fuel supply blocked? Check the entire fuel system.
Defective fuel pump? Replace fuel pump.
Engine stops by itself during normal
operation.
Fuel tank empty? Add fuel.
Fuel filter blocked? Replace fuel filter.
Defective fuel pump? Replace fuel pump.
Mechanical oil pressure shutdown
sensor stops the engine due to low oil?
Add oil. Replace low oil shutdown
sensor if necessary.
Low engine power, output and speed.
Fuel tank empty? Replace fuel filter.
Fuel filter clogged? Replace fuel filter.
Fuel tank venting is inadequate? Ensure that tank is adequately vented.
Leaks at pipe unions?
Check threaded pipe unions tape and
tighten unions a required.
Speed control lever does not remain in
selected position?
See engine manual for corrective
action.
Engine oil level too full? Correct engine oil level?
Low engine power output and low
speed, black exhaust smoke.
Air filter blocked? Clean or replace air filter.
Incorrect valve clearances? Adjust valves per engine specification.
Air-cooled gasoline/propane engine
runs very “HOT.” Cylinder head
overheats.
Too much oil in engine crankcase?
Drain off engine oil down to upper mark
on dipstick.
Entire cooling air system contaminated
blocked?
Clean cooling air system, and cooling
fin areas.
AUX 2 Lamp ON Low fuel (gasoline only)? Add fuel or check low fuel sensor.
troUbleshooting (engine)