Power Unit; Valve Clearance Adjustment - Yamaha WaveRunner FX140 Manuel D'entretien

INSP
ADJ
2
1

POWER UNIT

POWER UNIT

Valve clearance adjustment

The following procedure applies to all of the
valves.
NOTE:
• Valve clearance adjustment should be made
on a cold engine, at room temperature.
• When the valve clearance is to be measured
or adjusted, the piston must be at top dead
center (TDC) on the compression stroke.
1. Remove:
• Air filter case
Refer to "FUEL INJECTION SYSTEM"
in Chapter 4.
2. Remove:
• Spark plugs
• Cylinder head cover
• Cylinder head cover gasket
Refer to "CAMSHAFTS" in Chapter 5.
3. Install:
• Dial gauge needle
• Dial gauge stand 1
(into spark plug hole #1)
• Dial gauge 2
Dial gauge stand:
90890-06583
Dial gauge needle:
90890-06584
Dial gauge stand set:
YW-06585/90890-06585
Dial gauge:
YU-03097/90890-01252
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