Page F-1
Repair and Service Manual
SPEED CONTROL - ALL CABLES
Read all of Section B and this section before attempting any procedure. Pay particular attention to all Notes, Cautions and Warnings.
Fig. 1 Accelerator and Governor System
ACCELERATOR, GOVERNOR AND
CARBURETOR LINKAGE
System Operation
The linkages that control the accelerator mechanism, governor
and carburetor are designed to operate as an integrated
assembly. Any adjustment to one portion of the system will
have an effect on the other components within the system.
When the accelerator pedal is depressed, the accelera-
tor rod moves towards the rear of the vehicle by over-
coming the resistance of the accelerator return spring
(Ref. Fig. 1 on Page F-1).
As the accelerator pedal moves, the parking brake is
released, the micro switch closes and activates the igni-
tion circuit.
The rear end of the accelerator rod is joined to the micro
switch cam which connects to the accelerator cable.
As the micro switch cam moves to the rear it pulls the
accelerator cable, which pulls against the governor
spring.
When the accelerator cable pulls against the accelerator
cable/governor spring, the spring compresses until it
overcomes the resistance exerted by the governor
mechanism. As the governor spring overcomes these
forces, the governor arm moves and the motion is trans-
ferred through cable to the carburetor throttle plate.
Accelerator Pedal
Accelerator Rod
Accelerator Cable
Throttle Cable
Governor
Spring
Accelerator
Return Spring
Carburetor
Throttle Plate
Micro Switch
Cam
Micro Switch
Clevis
Axle
Governor
Arm