Throttle Block Alignment
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Slightly loosen the set screw 4 on the bottom of the throttle block housing.
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Move the control block to desired position.
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Torque the set screw to specification. Do not over-torque.
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With the engine off, test throttle lever movement after tightening the screw.

Throttle Block Set Screw
27 in-lbs (3 N·m)