Yanmar YM240 - Oil Pressure, Consumption, Fuel Consumption, and Smoke Issues

Trouble shooting 83
P PROBLEM
CAUSE
LOW OIL PRESSURE
HlGH OIL CONSUMPTION
HIGH FUEL CONSUMPTION
ENGINE EMITS BLACK OR
GRAY SMOKE
Low oil level.
Improper type of oil.
Clogged or dirt oil filter.
Defective oil pressure
regulating valve.
Worn crankshaft main
bearings or crank pin
bearings.
Crankcase oil too light.
Worn piston rings and
cylinder sleeves.
Worn valve guides or stem
seals.
External oil leaks.
Oil pressure too high.
Restricted air intake
system.
Clogged or dirty air
cleaner.
lmproper type of fuel.
Engine overloaded.
Injection nozzles dirty.
lmproper valve clearance.
Engine out of timing.
Implement improperly
adjusted.
Tire pressure too low.
Clutch slipping.
Improper type of fuel.
Clogged or dirty air
cleaner.
Engine overloaded.
1 lnjection nozzles dirty.
Drain. fill crankcase with oil
I
68
of proper viscosity and quality.
REMEDY
PAGE
REFERENCE
Replace filter.
1 68
Add oil.
Have YANMAR dealer check or
-
adjust valve.
67
See your YANMAR dealer.
Use proper viscosity oil.
See your YANMAR dealer
1
See your YANMAR dealer.
I -
I
Eliminate leaks.
Have YANMAR dealer
adjust pressure.
Check system and relieve
restriction.
Clean or replace air cleaner
Use proper fuel
Reduce load or shift to a
lower gear.
See your YANMAR dealer.
See your YANMAR dealer.
See your YANMAR dealer.
See implement operator's
manual.
Inflate tires to proper pressure.
Adjust clutch pedal free travel,
or have YANMAR dealer
replace clutch disk.
Use proper fuel
Clean or replace air cleaner.
I
Reduce load or shift to a lower
gear:
I .-
See your YANMAR dealer.
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