Valve Clearance Adjustment - Yamaha EF1000iS Service Manual

12

VALVE CLEARANCE ADJUSTMENT

3
4
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VALVE CLEARANCE ADJUSTMENT
1. Remove:
9 Cover 3
9 Side cover 2
9 Rear cover
9 Front cover
Refer to "COVERS".
9 Carburetor
Refer to "CARBURETOR" in CHAP-
TER 3.
9 Cylinder air shroud
Refer to "MUFFLER" in CHAPTER 3.
2. Remove:
9 Spark plug cap 1
9 Spark plug 2
9 Breather hose 3
9 Cylinder head cover 4
3. Gently operate the starter rope to bring
the piston to the top-dead-center of its
compression stroke (when the screwdriv-
er inserted into the spark plug hole reach-
es the highest position).
4. Measure:
9 Valve clearance
Out of specification → Adjust.
NOTE:
Valve clearance must be measured when the
engine is cool to the touch.
Intake Valve (cold):
0.1 mm (0.004 in)
Exhaust Valve (cold):
0.1 mm (0.004 in)
Thickness gauge:
YU-26900-9, 90890-03079
INSP
ADJ