3. LUBRICATION SYSTEM
SERVICE INFORMATION
GENERAL INSTRUCTIONS
• The service and maintenance of this section 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.
• The oil pump must be replaced as a set when it reaches its service life.
• After the oil pump is installed, check each part for oil leaks and improper lubrication.
• When removing and installing the oil cooler, be careful not to bend or deform the oil pipe.
SPECIFICATIONS
Item Standard (mm) Service Limit (mm)
Inner rotor-to-outer rotor clearance 0.20
Oil pump
Outer rotor-to-pump body clearance 0.20
Rotor end-to-pump body clearance 0.015～0.10 0.15
Item Oil Capacity Oil Pipe Capacity
Oil Cooler 53 cc 7 cc
TROUBLESHOOTING
Oil level too low Engine burns
• Natural oil consumption • Low or no lubrication pressure
• Oil leaks • Clogged oil passages
• Worn or poorly installed piston rings • Not use the specified oil
• Worn valve guide or seal • Faulty oil cooler
• Clogged oil cooler • Clogged oil cooler
• Clogged or leaky oil pipe • Clogged or leaky oil pipe
SERVICE INFORMATION..................... 3-1 OIL PUMP/OIL FILTER ROTOR .............. 3-3
TROUBLESHOOTING............................ 3-1 OIL COOLER REMOVAL/INSTALLATION... 3-5
ENGINE OIL/OIL FILTER SCREEN...... 3-2
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