A.J.S. 16 Instruction Book - Transmission Service
TRANSMISSION SERVICE
T H E GEAR B O X
The gear box provides four speeds and has a positive foot change, operated by the right
foot and a kick-starter.
It is retained to the frame by being clamped between the two engine rear plates by two
bolts. The bottom fixing bolt acts as a pivot. The top fixing bolt passes through the
gear box top lug and the rear plates, which are slotted, thereby allowing a swinging fore
and aft movement of the gear box to enable the front driving chain to be adjusted. That
movement is controlled by an adjusting bolt (marked 1 in illustration 28) secured in an
eye bolt (marked 2 in illustration 28) and locked in the required position by a nut
(marked 3 in illustration 28).
Illustration 23 clearly shows the general internal gearbox layout, the simple gear selection
and kick-starter mechanism.
Section through gearbox showing gears and clutch with actuating mechanism.
Illustration 23
F O O T C H A N G E OPERATION
Gears are selected by raising and depressing the gear change pedal which is attached to
the pawl carrier, the o p e r a t i n g pawl, is spring loaded by a hairpin type spring.
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