Rear suspension units

slider, the seal will go over the bush without damage.

Refill with 70 c.c. of SAE . 30 oil. NOTE—The fork tube bushes are silver soldered to the tubes 5¼" apart. Steering head adjustment. With the machine on the stand, need for adjustment of the steering head bearings may be detected by trying to rock the forks with hands holding the fork legs. The bearings should be tested for slackness after the first 200 miles and subsequently every 1,000 miles. Two spanners should be used, one turning the adjusting nut (34), the other to slacken and retighten the lock nut when the adjustment has been carried out.

Adjustment should be such that no play be felt, yet the bearings are free to rotate and are not over tight

Adjusting the bearings too tightly will ruin them and induce heavy steering. NOTE—It is important that adjusting and locking nuts are tightly locked together.

Front Forks 350 c.c. Lightweight Model, CSR, also 250 c.c. Scrambler

The front forks fitted to these Models are virtually identical in design to those fitted to the Heavyweight Models. The difference is confined to the diameter of the fork inner tubes. Therefore, the assembly and maintenance details given for the Heavyweight Models apply also to the Lightweight counterpart.

REAR SUSPENSION UNITS

These are sealed units. Maintenance is confined to greasing the outside diameter of the springs should a grating noise develop during movement. The damper fluid filled is sufficient to outlast the life of the unit. Should an oil leak develop, the damper unit must be exchanged. Removing the units. Simply take out the top and bottom fixing bolts, the unit will come away. Removing the top cover tube. To do this the spring is compressed to extract the split collets. Without the aid of a spring compressor tool, the collets can be removed with the unit attached to the frame. The assistance of a second person is required to press down the cover tube (compressing the spring) and smartly prise out the collets. It may be necessary to deal with one collet at a time. Alternatively, hold the top end of the unit in a vice and use the first method. Removing the rubber bushes. These are a press fit and can be extracted without difficulty. To refit use a little water on the rubber, which will facilitate entry without deterioriation of the rubber. The cam ring adjuster. By applying less than half a turn to the stepped cam (use spanner 023284) the suspension is corrected and retained to suit the change of load. This also enables the head lamp beam to remain unaltered. TABLE OF REAR SUSPENSION SPRINGS Part Free Model No. length Colour marking 250 c.c. Scrambler … 043178 8¼" Green/Yellow/Green