O.S. Engines GT55 - Manual (Page 6)

10
Fuel Inlet
CARBURETOR WLA-2 PARTS NAME
Carburetor Body
High Speed Needle
Idle Speed Stop Screw
(No need to adjust. Factory adjusted.)
Slow Speed Needle
Air Vent Fitting
(No need to connect in normal use.) Throttle Valve Lever
Choke Valve Lever
High Speed Stop Lever
High Speed
Stop Lever Retaining Screw
Idle Speed Stop Lever
Throttle Valve Lever
Retaining Screw
Spring Throttle Return
11
1.
2.
3.
4.
CARBURETOR LINKAGE
Remove the throttle lever retaining screw. (Pay attention
not to lose this screw because it is special size.) Also, be
careful not to remove the idle stop screw and return spring.
If they are removed accidentally, assemble them being
aware of the small notch.
Then, remove the opposite side high speed stop retaining
screw. (Pay attention not to lose this screw because it is
special size.) At this time, be careful not to remove the
high speed stop lever.
Then, install the throttle lever with the throttle lever
retaining screw.
Then, install the idle speed stop lever with the high speed
stop lever retaining screw.
Connect the throttle linkage so that the engine
can be stopped via radio operation.
Connect the throttle linkage so that the engine
can be stopped by radio operation in case of
unexpected starting, or there is a possibility of
injury.
Throttle lever can be installed either on right or
left. Here is a changing procedure.
When loosening and tightening each retaining screw, do
so with the throttle valve at mid position.
(If the throttle valve lever retaining screw is loosened or
tightened with the throttle valve fully opened or closed,
excessive force will be applied, which will results in
breaking the lever.)
NOTE