3. Lubrication System
3-2
Operational Precautions
General Information
z This chapter contains maintenance operations for the engine oil pump, engine oil and gear oil.
Specifications
Engine oil quantity
Disassembly: HU10U/W 750c.c.
HU05U 800c.c.
Replacement: HU10U/W 650c.c.
HU05U 700c.c.
Oil viscosity: SAE 10W-30 or equivalent
(Recommended King-Mate serial oils)
Gear Oil
Disassembly: HU10U/W 110c.c.
HU05U 100c.c.
Replacement: HU10U/W 100c.c.
HU05U 90c.c.
Oil viscosity of gear oil: SAE 85W-140
(Recommended King-Mate gear oil series
SYM HYPOID GEAR OIL)
Oil viscosity
Unit: mm
Items Standard(mm) Limit(mm)
Inner rotor clearance - 0.12
Clearance between outer rotor and body - 0.12
Oil pump
Clearance between rotor side and body 0.05~0.10 0.20
Torque value
Oil draining plug 3.5~4.5kgf-m
Oil screen cap 1.3~1.7kgf-m
Gear oil draining bolt 0.8~1.2kgf-m
Gear oil filling bolt 1.0~1.4kgf-m
Oil pump connection screw 0.1~0.3kgf-m
Special Service Tools
Strainer cap wrench SYM-ALL12361
One way clutch socket SYM-9020100
Universal fixer SYM-2210100
Trouble Diagnosis
Low engine oil level
Oil leaking
Valve guide or seat worn out
Piston ring worn out
Low Oil Pressure
Low engine oil level
Clogged in oil strainer, circuits or pipes
Oil pump damage
Dirty oil
No oil change in periodical
Cylinder head gasket damage
Piston ring worn out
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