KYMCO Dink 50, Service Manual

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4
. LUBRICATION SYSTEM
4-3
DINK 50/125
SERVICE INFORMATION
GENERAL INSTRUCTIONS
•
The maintenance of lubrication system can be performed with the engine installed in the frame.
•
Drain the coolant before starting any operations.
•
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 Unit: mm (in)
Standard Service Limit
Inner rotor-to-outer rotor clearance 0.15 (0.006) 0.2 (0.008)
Outer rotor-to-pump body clearance 0.15
～
0.2 (0.006
～
0.008) 0.25 (0.01)
Rotor end-to-pump body clearance 0.04
～
0.09 (0.0016
～
0.0036) 0.12 (0.0048)
ENGINE OIL
At disassembly:
1.1 liter (DINK125)
；
0.85 liter (DINK50)
Engine Oil Capacity
At change:
0.9 liter (DINK125)
；
0.70liter (DINK50)
Recommended Oil SAE10W30# API: SG
TROUBLESHOOTING
Oil level too low Poor lubrication pressure
•
Natural oil consumption
•
Oil level too low
•
Oil leaks
•
Clogged oil filter or oil passage
•
Worn piston rings
•
Faulty oil pump
•
Worn valve guide
•
Worn valve guide seal
Oil contamination
•
Oil not changed often enough
•
Faulty cylinder head gasket
•
Loose cylinder head bolts