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section
D 5
711098/1098S - M.Y. 2007 - edition 00
Use and maintenance
Cylinder compression test
Notes
The on-screen icons used during this procedure are explained in a table at the end of this section.
Engine performance is directly correlated to the pressure that can be measured in the combustion chambers of the two cylinders.
Excessive or insufficient pressure, or an excessive difference between the two cylinders, will result in a reduction in engine
performance and can lead to component failure.
Run the engine and allow it to warm up to the point at which fan operation starts, at least once.
Remove the engine outer structures.
Open the throttles completely.
Remove the HT leads (19), unscrewing the nuts (20) of both spark plugs.
Remove the spark plug from the cylinder to be tested.
Connect the HT lead to earth to prevent sparking.
Screw the cylinder compression fitting (11) into the spark plug bore.
Connect the pressure sensor (5) to the cable (11).
Switch on the DDS tester (1); see paragraph entitled “Connection to motorcycle”
Connect the power and diagnostics cable (Measurement Module) (3) to the measurement module connector (B) on the DDS
tester (1).
20
19
B
1 3
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