Adjustment Of Drive Chain; Drive Chain Adjustment; Wheel Alignment - Royal Enfield 350 BULLET 1989 Workshop Maintenance Manual

bearing surface of the operating cam, if this has been removed. Fit the operating lever on its splines in
a position to suit the extent of wear on the linings and secure with the nut. The range of adjustment can
be extended by moving the lever on to a different spline.
Note that the bolt holes in the cover plate for locating the rear brake cam bush are slotted, to enable
the brake shoe assy, to be centered in the drum. The brake cover plate assy with the shoes should be
fitted over the spindle into the brake drum and the brake applied as hard as possible by means of the
operating lever. This will centre the shoes in the drum. The brake cover plate assembly should then be
removed and the screws should then be tightened fully and secured with the lock nuts. If the shoes are
not correctly centred, the brake will be either ineffective or too fierce, depending on whether the
trailing or leading shoe first makes contact with the drum. With the brake assy, correctly centered and
screws securing the cam housing correctly tightened wear on both linings should be approx equal.

7. Adjustment of Drive Chain

Check slackness of the drive chain every 1000 Kms. and
adjust if necessary. The frequency of adjustment depends
entirely on the rider habits and usage conditions. If the chain is
adjusted too loose or too tight, the chain may either jump off
the sprocket or might break, causing serious damage to
vehicle/engine parts and may also lead to a serious accident.
The Procedure for Adjusting the rear chain is as follows;
Place the vehicle on its centre stand on a firm flat surface. Unfold and remove the split pin (1) on
the castle nut on LH side of rear wheel. Loosen the castle nut (2). Loosen the stub axle nut (3) and
rear brake anchor pin nut (4). Move the cam adjusters to the same number of notches on either side of
the axle. Rotate the rear wheel and check the chain tension on the top run of the chain. The minimum
free play of the chain should be 25 to 30 mm with the vehicle on its centre stand. Check the wheel
alignment of front and rear wheel, using a straight edge or by means of stretching a rope from the
front wheel to rear wheel. Retighten the stub axle nut. Rotate the rear wheel, apply the rear brake hard
and hold the rear brake pedal firmly in the depressed position so that the brake assembly is centralised
in the brake drum. Retighten the brake anchor pin nut. Release the brake pedal. Ensure that the chain
adjuster on the RH side is butting against the peg on the chain stay and is not disturbed from its
adjusted position. Retighten the castle nut fully such that the split pin hole is aligned. Locate the split
pin in position and bend out the split ends. Check the chain tension again at 3 or 4 places by rotating
the wheel and ensure the free play is 25 to 30 mm on the top run.

8. Wheel Alignment

NOTE: It is not possible to guarantee that the wheels are correctly aligned when the same notch
position is used on both adjuster cams. It is therefore not sufficient to count the notches and use the
same position on both sides of the machine. The only way to guarantee that the wheels are in line is to
check the alignment from front wheel to back using either a straight edge or a piece of taut string. The
alignment should be checked on both sides of the machine.
Page 54
WORKSHOP MANUAL BULLET

DRIVE CHAIN ADJUSTMENT