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3-15
COMPRESSION PRESSURE MEASUREMENT/
ENGINE OIL REPLACEMENT
INSP
ADJ
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18 Nm (1.8 mSkg)
NOTE:
Compression pressure
pp
(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.