KYMCO Vitality 50, Manual, Page: 69 / 275

4
. LUBRICATION SYSTEM
4-4
VITALITY 50
SERVICE INFORMATION (4-STROKE)
GENERAL INSTRUCTIONS
•
The maintenance of lubrication system can be performed with the engine installed in the frame.
•
Use care when removing and installing the oil pump not to allow dust and foreign matters to enter
the engine and oil line.
•
Do not attempt to disassemble the oil pump. The oil pump must be replaced as a set when it
reaches its service limit.
•
After the oil pump is installed, check each part for oil leaks.
SPECIFICATIONS
Item Standard (mm) Service Limit (mm)
Inner rotor-to-outer rotor clearance 0.15 0.20
Oil pump Outer rotor-to-pump body clearance 0.15 0.20 0.25
Rotor end-to-pump body clearance 0.04 0.09 0.12
TROUBLESHOOTING
Oil level too low Poor lubrication pressure
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Natural oil consumption
•
Oil level too low
•
Oil leaks
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Clogged oil filter or oil passages
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Worn or poorly installed piston rings
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Not use the specified oil
•
Worn valve guide or seal