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4. LUBRICATION SYSTEM 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 0.150.2 (0.0060.008) 0.25 (0.01)
Rotor end-to-pump body clearance 0.040.09 (0.00160.0036) 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
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