Oil Pressure - HYOSUNG COMET 125 Service Manual

OIL PRESSURE

Check the oil pressure periodically. This will give a good indication of the condition of the moving parts.
Oil pressure
If the oil pressure is lower or higher than the specification, the following causes may be considered.
LOW OIL PRESSURE
Oil leakage from the oil passage
Damaged O-ring
Defective oil pump
Combination of above items
HIGH OIL PRESSURE
Engine oil viscosity is too high
Clogged oil passage
Combination of the above items
OIL PRESSURE TEST PROCEDURE
Check the oil pressure in the following manner.
Remove the oil check plug and install the adapter of oil
pressure gauge at the removed position.
Connect an engine tachometer.
Warm up the engine as follows :
Summer : 10 min. at 2,000 rpm.
Winter : 20 min. at 2,000 rpm.
After warming up, increase the engine speed to
3,000 rpm. (with the engine tachometer), and read
the oil pressure gauge.
Oil pressure gauge : 09915 - 74510
Engine tachometer : 09900 - 26006
Standard
2.0 0.5 /
(at 65 3,000 rpm)
PERIODIC MAINTENANCE 2-20
Oil pressure
Standard
0.9 1.1 /
(at 65 3,000 rpm)