19 TRANSMISSION Adjustments which can be carried out without dismantling CLUTCH ADJUSTMENT Two adjustments are provided at the clutch control FRONT CHAIN ADJUSTMENT arm on the gearbox outer cover. The adjustment, The front chain is adjusted by moving the gearbox. which is for the clutch push rod will be exposed when The latter slides between two plates and cannot, the rubber cover at the base of the arm is moved therefore, cause chain misalignment. aside and consists of a grub screw and locknut. Release the gearbox fixing bolts and move the box Between the inner end of the screw and the clutch by means of the screw adjuster (see Fig. 27) until the push rod a steel ball is inserted and the grub screw chain has about ½ play at a point about “ total must be adjusted so that there is just a little between its sprockets. The chaincase filler plug clearance between the ball and push rod. The can be used as an inspection cover for this purpose, control arm in the declutched position should be as or alternatively, the chaincase outer cover can be upright as possible. taken off. Make sure that the adjustment is correct for all positions of the sprockets and that the gearbox Fig. 26. Clutch control adjustment. bolts are well tightened. The second adjustment is for the cable itself. If the REAR CHAIN ADJUSTMENT control arm has been set in a new position, the cable The rear chain is tensioned by means of a special length is altered to suit by means of the thumb nut on cam on the nearside of the wheel spindle and by the cable stop above the gearbox. screw adjustment on the offside. First, release the
19 TRANSMISSION Adjustments which can be carried out without dismantling CLUTCH ADJUSTMENT Two adjustments are provided at the clutch control arm on the gearbox outer cover. The adjustment, which is for the clutch push rod will be exposed when the rubber cover at the base of the arm is moved aside and consists of a grub screw and locknut. Between the inner end of the screw and the clutch push rod a steel ball is inserted and the grub screw must be adjusted so that there is just a little clearance between the ball and push rod. The control arm in the declutched position should be as upright as possible. Fig. 26. Clutch control adjustment. The second adjustment is for the cable itself. If the control arm has been set in a new position, the cable length is altered to suit by means of the thumb nut on the cable stop above the gearbox. FRONT CHAIN ADJUSTMENT The front chain is adjusted by moving the gearbox. The latter slides between two plates and cannot, therefore, cause chain misalignment. Release the gearbox fixing bolts and move the box by means of the screw adjuster (see Fig. 27) until the chain has about ½ “ total play at a point about between its sprockets. The chaincase filler plug can be used as an inspection cover for this purpose, or alternatively, the chaincase outer cover can be taken off. Make sure that the adjustment is correct for all positions of the sprockets and that the gearbox bolts are well tightened. REAR CHAIN ADJUSTMENT The rear chain is tensioned by means of a special cam on the nearside of the wheel spindle and by screw adjustment on the offside. First, release the