Honda Z50A Manual page 30

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28
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Troubles
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Probable Cause
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Remedy
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Procedure
Poor high speed Choke left in closed Open choke full
Set the choke lever to oqen.
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qerformance position
Fuel lever cock Set to open or RES
Position the lever to one of the
position.
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Clogged air vent Clean Remove and clean.
Clogged main jet Clean
Remove the main jet and clean out
with compressed air before assembly.
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Dirty air cleaner
Clean or replace
Overflow Clogged float valve Clean
Remove the float chamber cover. If
with dust. there are accumulated dust. remove
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dust by blowing air or remove the
valve seat and clean it.
Damaged or worn Replace as assembly.
Replace as valve assembly.
valve and valve seat.
Punctured float Replace
Remove the float and shake to check
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Clean
if fuel is inside. reqlace.
Clogged air vent
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(ENGINE)
Troubles
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Probable Cause
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Remedy
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Procedure
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Poor speed and Clutch slippage Check and adjust If the clutch friction disk is worn
powerless beyond serviceable limit. replace the
parts with new.
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Also check its corresponding parts.
See page 18.
Air cleaner and tube Check and clean When the air cleaner element and
air inlet tube are clogged. clean the
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element by air and remove the dust
inside inlet tube.
Ignition timing. tappet Adjust and correct Align the "F" mark on the flywheel
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clearance and to the index mark on the case.
engine's knocking The contaot breaker point should just
begin to open this time.
Correct the proper tappet clearance
by using a thickness gauge.
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Compression pressure
Inspect. retighten and Measure compression pressure by
replace gauge. If gauge show less than
8.0 kg/cm
2 •
Replace the piston ring
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and others. Retighten the cylinder
and cylinder head bolts.
Spark plug Clean or replace
Clean spark plug electrode using a
stiff wire and adjust the electrode ga
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(0.024~0.028 in or 0.6-0.7 mm). or
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replace the proper heat range plug.
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