3-15
COMPRESSION PRESSURE MEASUREMENT/
ENGINE OIL REPLACEMENT
INSP
ADJ
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18 Nm (1.8 mSkg)
NOTE:
Compression pressure
(With oil applied into cylinder)
Reading
Diagnosis
Higher than
without oil
Worn or damaged pistons
Same as
without oil
Possible defective ring(s),
valves,
cylinder head gasket or
piston ! Repair.
Compression pressure (at sea level):
Standard:
1,400 kPa (14 kg/cm
2
, 14 bar)
Minimum:
1,120 kPa (11.2 kg/cm
2
, 11.2 bar)
Measurement steps:
D Crank the engine with the throttle wideopen
until the reading on the compression gauge
stabilizes.
Before cranking the engine, ground all
spark plug leads to prevent sparking.
8. Install:
D Spark plug
9. Install:
D Side panels
Refer to “COVER AND PANEL” section.
YP303070
ENGINE OIL LEVEL INSPECTION
1. Stand the scooter on a level surface.
Make sure the scooter is upright when inspect-
ing the oil level.
2. Start the engine and let it warm up for a few
minutes.
3. Turn off the engine.
4. Inspect:
D Engine oil level
Oil level should be between maximum
1
and minimum
2
marks.
Oil level is below the minimum mark
! Add oil up to the proper level.
