Adjusting The Engine Idling Speed - Yamaha FZ8NA Service Manual

• Lubricate the valve lifter (Outer side) with
engine oil.
• Install the valve lifter and the valve pad in the
correct place.
• The valve lifter must turn smoothly when
rotated by hand.
g. Install the exhaust and intake camshafts,
timing chain and camshaft caps.
Camshaft cap bolt
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
TIP
• Refer to "CAMSHAFTS" on page 5-11.
• Lubricate the camshaft bearings, camshaft
lobes and camshaft journals.
• First, install the exhaust camshaft.
• Align the camshafts marks with the camshaft
cap marks.
• 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 specifi-
cation, repeat all of the valve clearance
adjustment steps until the specified clear-
ance is obtained.
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7. Install:
• All removed parts
TIP
For installation, reverse the removal proce-
dure.
EAS20610

ADJUSTING THE ENGINE IDLING SPEED

TIP
Prior to adjusting the engine idling speed, the
throttle bodies synchronization should be
adjusted properly, the air filter element should
PERIODIC MAINTENANCE
be clean, and the engine should have ade-
quate compression.
1. Start the engine and let it warm up for sev-
eral minutes.
2. Install:
• Digital tachometer
(Use goods on the market)
3. Check:
• Engine idling speed
Out of specification → Adjust.
Engine idling speed
1150–1250 r/min
4. Adjust:
• Engine idling speed
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a. Turn the idle adjusting screw "1" in direction
"a" or "b" until the specified engine idling
speed is obtained.
Direction "a"
Engine idling speed is increased.
Direction "b"
Engine idling speed is decreased.
ECA39P1302
• Do not touch synchronizing screw "1".
Could affect the engine idling speed or
cause malfunction in other related parts.
• Do not touch the throttle adjust screw
"2". Could affect the engine idling speed
or cause malfunction in other related
parts.
• Clean the throttle bodies only if they can-
not be synchronized using the air screw.
Refer to "CHECKING AND CLEANING
THE THROTTLE BODIES" on page 7-9.
• If they cannot synchronized, replace the
throttle body assembly.
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