Troubleshooting; Service Information - Honda CBR125R Owner's Manual

SERVICE INFORMATION

GENERAL
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 thoroughly wash your hands with soap and
water as soon as possible after handling used oil.
• The oil pump can be serviced with the engine installed in the frame.
• The service procedures in this section must be performed with the engine oil drained.
• When removing and installing the oil pump, use care not to allow dust or dirt to enter the engine.
• If any portion of the oil pump is worn beyond the specified service limit, replace the oil pump as an assembly.
• After the oil pump has been installed, check that there are no oil leaks.
• Refer to the following:
– engine oil level check (page 3-13)
– engine oil change (page 3-14)
SPECIFICATIONS
Engine oil capacity
Recommended engine oil
Oil pump rotor
TORQUE VALUE
Oil pump assembly bolt

TROUBLESHOOTING

Engine oil level too low, high oil consumption
• Oil consumption
• External oil leaks
• Worn valve guide or stem seal
• Worn piston rings
• Improperly installed piston rings
• Worn cylinder
Engine oil contamination
• Oil not changed often enough
• Worn valve guide or stem seal
• Worn piston rings
• Improperly installed piston rings
• From coolant mixing with oil
– Faulty head gasket
– Water leak in crankcase
ITEM
At draining
At disassembly
Except CM type
CM type only
Tip clearance
Body clearance
Side clearance
5.0 N·m (0.5 kgf·m, 3.7 lbf·ft)
STANDARD
1.0 liter (1.1 US qt, 0.9 lmp qt)
1.3 liters (1.4 US qt, 1.1 lmp qt)
Honda "4-stroke motorcycle oil" or an
equivalent
API classification: SG or higher (except
oils labeled as energy conserving on
the circular API service label)
JASO T 903 standard: MA
Viscosity: SAE 10W-30
Pro Honda GN4 4-stroke oil or equiva-
lent motor oil
API service classification: SG or Higher
JASO T 903 standard: MA
Viscosity: SAE 10W-30
–
0.15 – 0.21 (0.006 – 0.008)
0.05 – 0.10 (0.002 – 0.004)
LUBRICATION SYSTEM
Unit: mm (in)
SERVICE LIMIT
–
–
–
–
0.15 (0.006)
0.26 (0.010)
0.12 (0.005)
4-3