Rato 173cc, Owner'S Manual

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…23…
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TROUBLESHOOTING
If…still…can’t…starting,…have…the…engine…to…our…authorized…dealer…for…
repairing.
· When testing the spark plug, never hold the high- voltage wire of
the spark plug with wet hand.
· Make sure there is no spilled fuel outside the engine and that the
spark plug isn’t dipped with fuel.
· To prevent fire, keep sparks far away from the spark plug
mounting hole.
2.…Gasoling…Engine…Power…Output…Insufficiency
TROU-
BLE
CAUSE REMEDY
When
…increasing
…throttle,
……speed
…increase
…slow
…or
…
…even
…decrease
…and
………
stop
…running
…
Fuel
…supply
…system
Air… in… fuel… line… or… fuel… line…
clogged
Exhaust…air…or…dredge…fuel…
line
Main…oil…flow…hole…is…not…ad-
justed…properly
Readjust
In…carburetor,…needle…valve…hole…
and…main…oil…flow…hole…clogged.
C l e a n… a n d… b l o w… t o… g e t…
through
Fuel…cock…is…clogged…up.
Clean,…replace…damaged…part
Too… much… carbon… deposit… in…
combusting…chamber.
Clear…away
Too…much…car…bon…fouling…in…
muffler…and…exhaust…pipe.
Clear…away
Air…cleaner…is…clogged…up.
Clean…air…cleaner…filter…ele-
ment
Intake…pipe…is…leaking Repair…or…replace
Poor
…compression
Piston…or…cylinder…or…piston…ring…
is…worn
Replace…the…worn
Air…leakage…from…the…surface…by…
which…cylinder…block…contacting…
with…cylinder…head.
Replace…cylinder…gasket
Too…big…or…too…small…valve…clear-
ance.
Readjust…
Valve…tightness…is…poor. Repair