Synchronizing The Throttle Bodies - Yamaha VMAX 2009 Service Manual

2
1
g. Install the exhaust and intake camshafts, tim-
ing chain and camshaft caps.
Camshaft cap bolt
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
TIP
• Refer to "CAMSHAFTS" on page 5-9.
• Lubricate the camshaft lobes and camshaft
journals.
• Turn the crankshaft clockwise several full turns
to seat the parts.
h. Measure the valve clearance again.
i. If the valve clearance is still out of specifica-
tion, repeat all of the valve clearance adjust-
ment steps until the specified clearance is
obtained.
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6. Install:
• All removed parts
TIP
For installation, reverse the removal procedure.
EAS20571

SYNCHRONIZING THE THROTTLE BODIES

TIP
Before synchronizing the throttle bodies, check
the following items:
• Valve clearance
• Spark plugs
• Air filter element
• Throttle body joints
• Fuel hoses
• Air induction system
• Exhaust system
• Breather hoses
Checking the throttle body synchronization
1. Stand the vehicle on a level surface.
TIP
Place the vehicle on a suitable stand.
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2. Remove:
• Caps "1"
A
B
1
A. Left side
B. Right side
3. Install:
• Vacuum gauge "1"
• Digital tachometer
LLL
4. Check:
• Throttle body synchronization
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a. Start the engine, warm it up for several min-
utes, and then let it run at the specified en-
gine idling speed.
3-7
1
Vacuum gauge
90890-03094
Carburetor synchronizer
YU-44456
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Engine idling speed
950–1050 r/min
ENGINE
1
1
1
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