Service Information; Troubleshooting - KYMCO Mongoose/KXR 250 Service Manual

4
. LUBRICATION SYSTEM

SERVICE INFORMATION

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
Inner rotor-to-outer rotor clearance
Oil pump Outer rotor-to-pump body clearance
Rotor end-to-pump body clearance

TROUBLESHOOTING

Oil level too low
• Natural oil consumption
• Oil leaks
• Worn or poorly installed piston rings
• Worn valve guide or seal
Item Standard (mm) Service Limit (mm)
0.15
0.15～0.20
0.04～0.09
Poor lubrication pressure
• Oil level too low
• Clogged oil filter or oil passages
• Not use the specified oil
Mongoose/KXR 250
0.20
0.25
0.12
4-2