Yamaha F115 AETL [118/709] Insp adj

Yamaha FL115A [118/709] Insp adj
3-23
E
INSP
ADJ
GENERAL
4. Tighten:
Spark plug
NOTE:
Before installing the spark plug, clean the
gasket surface and spark plug surface.
Also, it is suggested to apply a thin film of
anti-seize compound to the spark plug
threads to prevent thread seizure.
If a torque wrench is not available, a good
estimate of the correct tightening torque
is to finger tighten a the spark plug and
then tighten it another 1/4 to 1/2 of a
turn b.
T
R
.
.
Spark plug
25 Nm (2.5 m • kgf, 18 ft • lb)
3390
COMPRESSION PRESSURE
MEASUREMENT
3
CAUTION:
Before removing a spark plug, use com-
pressed air to blow away dirt accumulated
in the spark plug well to prevent it from
falling into the cylinder that is being tested.
1. Check:
Valve clearance
Out of specification Adjust.
Refer to “ADJUSTING THE VALVE
CLEARANCE” on page 3-13.
2. Warm-up:
Engine
3. Remove:
Spark plug(-s)
4. Install:
Compression gauge 1
(into the spark plug hole)
NOTE:
Use a compression gauge that is used for
automobiles.
1
3391

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