Honda Z50A Manual page 32

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30
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Trobules
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Probable Cause
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Remedy
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Procedure
Noise
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Tappet noise
• Tappet clearance Adjust Adjust the proper clearance if it is
too large.
• Wear of rocker arm
Replace Replace the rocker arm and shaft if
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and shaft excessively worn.
Piston slap
• Large clearance be-
Replace Piston or cylinder should be replaced,
tween piston and use its oversize of piston and piston
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cylinder
ring.
• Large clearance of
Repair
Replace the worm parts when the
bearing ends of
connecting rod to piston pin or to
connecting rod crank pin clearance are excessively
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large.
Cam chain noise
• Cam chain tensioner. Adjust or replace , Perform the adjustment or replace-
chain and wear of
ment if the cam chain tensioner is
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sprocket teeth
inoperative.
, The stretched chain should be re-
placed.
• Excessive worm teeth of sprocket
(cam side. timing side) should be
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replaced.
Clutch chattering
Clutch outer and Replace , Replace the worn parts if there are
noise friction disk excessive looseness between them.
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Crankshaft noise
Bent center of crank- Align and replace Align the crankshaft if there are ex-
shaft and crank pin. cessive deflection at the center of
worn bearing crank shaft. Bent crank pin and worn
bearing should also be replaced.
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Primarly drive Drive or driven gear
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Carefully check to the teeth face of
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Inspect and replace
gear's noise drive or driven gear on which there
are excessive wear. replace them.
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