cleanliness, ruptures, holes, and tears. Replace a
defective filter element.
3.
Check the fin assembly, gasket, and screen for
damage. Replace the filter if damage is evident.
ADJUSTING THE THROTTLE
CONTROL
Proper throttle operation is dependent upon proper
adjustment of the throttle control. Before adjusting
the carburetor, assure the throttle control is operating
correctly.
1.
Pivot the seat upward.
2.
Loosen the cable clamp screw securing the cable
to the engine.
3.
Move the remote throttle control lever forward
to the FAST position.
4.
Pull firmly on the throttle cable until the back of
the swivel contacts stop.
5.
Tighten the cable clamp screw and check the
engine RPM setting.
High Idle: 3150 ± 50
Low Idle: 1750 ± 50
ADJUSTING THE CHOKE
CONTROL
1.
Pivot the seat upward.
2.
Loosen the cable clamp screw securing the cable
to the engine.
3.
Move the remote choke control lever forward to
the CLOSED position.
4.
Pull firmly on the choke cable until the choke
butterfly is completely closed, then tighten the
cable clamp screw.
ADJUSTING THE CARBURE-
TOR AND SPEED CONTROL
IMPORTANT: Before the carburetor and speed
control are adjusted, the throttle and choke con-
trols must be adjusted properly.
1.
Pivot the seat upward and secure with the seat
prop rod.
2.
Start the engine and let it run at half throttle for
five minutes to warm up.
3.
Move the throttle control to SLOW. Hold the
governor lever so the throttle lever is in the idle
position (against idle stop screw) and adjust idle
stop screw to 1750 ± 50 rpm by turning the
screw in or out. Check speed with a tachometer.
4.
Turn the idle mixture screw slowly clockwise
(lean mixture) until the engine speed just starts
to decrease. Note the position of the needle.
Now turn the idle mixture screw slowly counter-
clockwise (rich mixture) until the engine speed
just starts to decrease. Note position of the nee-
dle.
Set the screw midway between the rich and lean
Maintenance
20
The engine must be running during adjustment
of the carburetor and speed control. To guard
against possible personal injury, keep hands,
feet, face and other parts of the body away from
any rotating engine parts
WARNiNG
Figure 18
1.
Throttle casing clamp screw
2.
Throttle cable
3.
Swivel
4.
Stop
5.
Choke casing clamp screw
6.
Choke cable
➀
➃
➄
➅
➁
➂
