TRANSMISSION
Front Chain
The front chain runs on short fixed centres and adjustment is neither required nor
provided.
The chain will run for many thousands of miles before examination is required.
This operation involves the removal of the primary chain cover (Fig. 6), after the
starter and gear change pedals, both of which are mounted on splines and locked by
pinch bolts “B” and “C” respectively, have been removed, together with the five
securing screws “D”. The normal up and down play on the front chain is up to
⅜
in.
(1 cm.) and the maximum permissible, indicating that the chain is unduly worn and
requires replacement, is about ¾ in. (2 cm.).
Primary Chain Lubrication
This has a common oil supply with the gearbox and therefore does not require
separate attention, beyond the instructions for the gearbox.
The Bantam Supreme is shown, but details apply to all models.
It is a good plan periodically to remove the rear chain, clean it thoroughly in petrol
or paraffin, and then gently warm in a mixture of grease and graphite. When cool
wipe off excess grease, clean sprockets and replace chain. Remember when
replacing the chain, which is fitted with a detachable connecting link, that the spring
fastener must always be put on with the closed end pointing in the direction of travel
of the chain (i.e. on the lower run of the chain, the closed end should be rearward).
