3-23
CHECKING THE SPARK PLUGS/
MEASURING THE COMPRESSION PRESSURE
CHK
ADJ
18 Nm (1.8 mSkg, 13 ftSlb)
NOTE:
NOTE:
7. Install:
S spark plug
S spark plug caps
Before installing the spark plug, clean the spark
plug and gasket surface.
8. Install:
S radiator lower hose bracket bolt
S radiator lower bolt
EAS00065
MEASURING THE COMPRESSION
PRESSURE
The following procedure applies to all of the cyl-
inders.
Insufficient compression pressure will result in a
loss of performance.
1. Measure:
S valve clearance
Out of specification ! Adjust.
Refer to “ADJUSTING THE VALVE CLEAR-
ANCE”.
2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Remove:
S rider seat
Refer to “SEAT”.
S front cowling inner panel (letf and right)
Refer to “COWLINGS”.
S fuel tank
Refer to “FUEL TANK”.
S air filter case
Refer to “AIR FILTER CASE”.
S battery
Refer to “CHECKING AND CHARGING THE
BATTERY” in chapter 3.
S battery box
S battery box bracket
Refer to “BATTERY BOX AND BATTERY
BOX BRACKET”.
S heat protector plate
4. Remove:
S cover
S ignition coils
S spark plug caps
S spark plugs
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