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4. Lubrication System
Service Information
4-1
Oil Pump Disassembly/Assembly
4-4
Troubleshooting
4-1
Right Crankcase Cover Disassembly/
Assembly
4-5
Lubrication Sy stem Diagram
4-2
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Oil Pump Removal/Installation
4-3
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Service Information
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~
.
If the engine must
~running
to do some work. make sure the area is well ventilated. Never run the engine in an
en-l
closed area. The exhaust contains poisonous carbon monoxide gas that can cause loss of consciousness and may lead
---
II
to death. Rlm the engine in an open area or with an exhaust evacuation system in an enclosed area.
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·
Used engine oil may cause skin cancer
if
repeatedly left in contact with the skin for prolonged periods. Although this is
unlikely unless you handle used oil on a daily basis,
it
is still advisable to throughly wash your hands with soap and
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I
water as soon as possible after handling used oil.
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When removing and installing the oil pump use cafe not to allow dust or dirt to enter the engine.
If
any Dortion of the oil pump is worn beyond the specified service limits, replace the ail pump
ClS
em assembly,
After the oil pump has been installed, check that there are no oil leaks and that oil pressure is correct.
For oil pressure warning light inspection, refer to section 25 of the Common Service Manual.
Troubleshooting
Oil Level Low
Low Oil Pressure
Oil consumption
Clogged oil filter screen
External oil leak
Oil pump worn or damaged
Worn piston ring or incorrect piston ring installation
Internal oil leak
' .
Worn valve guide or seal
Incorrect oil being used
Low oil level
low or No Oil Pressure
Clogged oll orifice
High Oil Pressure
•
Incorrect oil being used
Plugged oil filter, gallery, or metering orifice
•
Incorrect oil being used
Oil Contamination
From coolant mixing with oil
-- Faulty head gasket
-
Water leak in crankcase
No Oil Pressure
Oil level too low
Oil pump drive chain or drive sprocket broken
Oil pump damaged (pump shaftl
Internal oil leaks
4-1
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