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a. To set the throttle/brake linkage, first the radio should be on and neutral; thus, the servo is at neutral
position.
b.
With the servo at neutral, turn and adjust the brake adjust knob to a point
where the brake lever almost
engages the brake system, but not yet.
c. With the servo at neutral, loosen the throttle collars. Then, manually close the carburetor, and set the
collar (next to the spring) with the spring slightly compressed. Then, set the other collar next to the
linkage pivot.
ADJUSTING THROTTLE / BRAKE LINKAGE
a
b c
6
11
a. To set the carburetor idle (small needle sticking out from the carburetor body), turn the screw as
pictured. Initial idle setting should leave 1mm carburetor gap. Clockwise turn will provide higher idle
(larger carburetor opening), and counterclockwise turn will provide lower idle (smaller carburetor
opening).
b. To set the high speed needle (large needle sticking out from the carburetor body), turn the screw as
pictured. Initial high speed needle setting should be 2.5 turns (close the needle completely, then back
out 2.5 turns). Clockwise turn will provide leaner setting (lower fuel to air mixture), and counterclockwise
turn will provide richer setting (higher fuel to air mixture). Please refer to ENGINE BREAK-IN/SETTING
procedures to properly set the engine.
c. Remove the outer foam from filter and make it moist evenly with a few drops of fuel. If the vehicle
will be operated in an area with fine dust, use filter oil or caster oil instead of fuel. It is important that
the foam is only moist to trap dirt and allow air passage. With the foam too wet, limited air can pass
through; therefore, limiting engine performance. Finally, make sure the air cleaner boot is securely
fastened with a zip-tie.
ADJUSTING CARBURETOR
a bc