Instruction manual

MAGNETO CHAIN ADJUSTMENT

The magneto platform hinges on one of its fixing bolts. This provides sufficient move-

ment for adjustment to the magneto driving chain.

Tighten magneto chain by :

Remove magneto chain case cover.

Slacken nuts on bolts supporting magneto platform.

Insert a screwdriver under that end of the magneto platform which Is slotted and lever

upwards until the chain tension is correct.

The chain whip should be about ¼".

Tighten nuts on platform supporting bolts.

Re-check chain tension.

Place supply of grease on magneto driving chain.

Replace magneto chain cover.

ENGINE SHOCK ABSORBER

The engine shock absorber Is a spring device for smoothing out the impulses transmitted

by the engine.

The engine sprocket is a free fit on the driving side flywheel axle. It has, integral with it,

a face cam that engages with a similar face cam ("shock absorber cam ") which Is keyed

to the driving side flywheel axle by splines. A spring keeps the shock absorber cam In

close engagement with the cam on the sprocket, and, the shock absorber cam being

driven by the engine, over-rides the sprocket cam under the influence of the engine

impulses. The shock absorber spring is compressed by the over-riding of the cams,

thereby absorbing the shocks.

It is essential the faces of the cams are adequately lubricated otherwise the shock absorbing

action will be nullified and this is automatically taken care of, providing the level of the

oil in the front chaincase is maintained according to the instructions given In the

" Lubrication Section."

The shock absorber spring is retained by a cap washer and a retaining bolt which must

be fully tightened.

The dynamo sprocket is integral with the engine sprocket.

Behind the engine sprocket (between the sprocket and the crankshaft ball bearing)

is a spacing collar which is a sliding fit on the driving side flywheel axle and in no circum-

stances must this be omitted.

NOTE—At the first sign of transmission harshness examine front chaincase for correct

oil level, and dismantle and lubricate the shock absorber parts if the harshness

continues. For access to the shock absorber parts it is necessary to remove

the outer half of the front chaincase.

The order of assembly of the engine shock absorber is

1 The spacing collar between the crankshaft bearing and the engine sprocket.

2 The engine sprocket.

3 The shock absorber cam.

4 The shock absorber spring.

5 The cap washer.

6 The retaining nut.