52
MAINTENANCE
3. Slowly rotate the choke cable
adjuster counterclockwise while
checking the choke lever for free-
play. As soon as all free-play has
been removed from the end of the
lever, stop rotating the adjuster.
4. With free-play removed from the
lever, slowly rotate the choke
cable adjuster once again clock-
wise while checking the choke
cable lever for free-play. Adjust
until 3 mm (1/8 in.) free-play
between front bottom edge of
lever and housing is attained.
Securely tighten the adjuster jam
nut.
732-848B
Adjusting Piston Valve
1. Remove the air-intake silencer
boot; then rotate the idle speed
screw counterclockwise until all
spring tension is removed.
0727-156
2. Loosen the jam nut securing the
throttle cable swivel adapter; then
rotate the swivel adapter clock-
wise until the piston valve bot-
toms in the piston valve bore.
3. Place a finger lightly against the
side of the valve; then rotate the
carburetor swivel adapter coun-
terclockwise until slight upward
movement of the valve is noted.
4. Place a finger against the valve.
Rotate the idle speed screw clock-
wise until it contacts the valve.
5. Compress the throttle lever to the
full-open position; then rotate the
idle speed screw clockwise 2
complete turns. Release the throt-
tle lever.
NOTE: There must be free-play
between the throttle lever and the
control housing.
6. At this point, there must be cable
free-play gap in the throttle lever.
733-081C
NOTE: If no cable free-play gap
is detected, rotate the swivel
adapter until free-play is achieved.
The piston valve must be resting
against the tip of its idle speed
screw.
Adjusting Pilot Air
Screw
1. While counting the rotations,
carefully rotate the pilot air screw
clockwise until lightly seated.
! CAUTION
Do not force a pilot air screw
when rotating it clockwise; dam-
age to the pilot air screw needle
tip will result.
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