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CHK
ADJ
4.Detach:
●Timing light
●Inductive self-powered tachometer or engine
tachometer
5.Install:
●Seat
●Fuel tank side panel (right)
Refer to “SEAT, CARRIERS, FENDERS
AND FUEL TANK”.
MEASURING THE COMPRESSION
PRESSURE
N
OTE:
Insufficient compression pressure will result in
a loss of performance.
1.Check:
●Valve clearance
Out of specification → Adjust.
Refer to “ADJUSTING THE VALVE
CLEARANCE”.
2.Start the engine and let it warm up for
several minutes.
3.Stop the engine.
4.Remove:
●Seat
●Fuel tank side panel (right)
Refer to “SEAT, CARRIERS, FENDERS
AND FUEL TANK”.
5.Remove:
●Spark plug
6.Attach:
●Adapter
●Compression gauge 1
Compression gauge:
P/N. YU-33223, 90890-03081
Adapter:
P/N. YU-33223-3, 90890-04082
CHECKING THE IGNITION TIMING/MEASURING THE COMPRESSION PRESSURE