Yamaha pw80 - Manual (Page 24)

CAUTiON:
Recommended oil: Foam-air-filter oil
If for any reason you should use another
type, use air cooled 2-stroke engine oil.
CAUTiON:
Never use motor oil on a foam air filter ele­
ment. Motor oil will not remain suspend­
ed in the filter element.
7. Remove the filter element from the plastic
bag and squeeze out the excess oil.
Again, avoid twisting or wringing the air
filter element. The element should be
damp, but not dripping, with oil.
8. Reinstall the filter in the machine, and
make sure the sealing surface of the filter
is seated properly. Complete reassembly
of the machine, and check all the fittings
for tightness.
NOTE: --------------------------------------
Each time filter element maintenance is per­
formed, check the air inlet to the filter case for
obstructions. Check the air cleaner joint rub­
ber to the carburetor and manifold fittings for
an air-tight seal. Tighten all fittings thoroughly
to avoid the possibility of unfiltered air enter­
ing the engine.
Never operate the engine with the air filter
element removed. This will allow un­
filtered air to enter, causing rapid wear and
possible engine damage. Additionally,
operation without the filter element will
affect carburetor jetting with subsequent
poor performance and possible engine
overheating.
THROTTLE CABLE ADJUSTMENT
Check the play in turning direction of throttle
grip. The play should be 3~5 mm (0.12 — 0.20
in) at grip flange, loosen the lock nut and turn
the cable adjuster to make the necessary ad­
justment. Tighten the lock nut.
IDLE SPEED ADJUSTMENT
1. Turn the pilot air screw in until lightly
seated.
2. Back out 1 and 1 /2 turns. Start the engine
and warm it up.
1. Pilot air screw
Pilot air screw:
1-1/2 turns out
3. Turn the throttle stop screw until idle is
at desired r/min.
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