Two-Stroke Motorcycle Engine Maintenance and Repair by Dave Boothroyd

Author:Dave Boothroyd
Language: eng
Format: epub
ISBN: 9781785001215
Publisher: Crowood

Fig. 6.34 Install the clutch bearing sleeve on the shaft.

Fig. 6.35 Tighten the centre nut to the correct torque.

Fig. 6.36 The top pressure plate must fit snugly.

Fig. 6.37 Three standard springs and three from the Yamaha R6.

Refitting the Flywheel Assembly

Fig. 6.38 The Woodruff key and taper are in good condition.

Set the crank so that the slot for the Woodruff key faces upwards, then install the key. It is much easier to do this first.

Fit the stator on to the lugs in the casing; it is a tight fit. See Fig. 6.10 for the correct orientation of the stator.

In this case, the stator was replaced in its original position, using the marks made when it was dismantled. As you fit the stator, feed the wiring harness through the hole in the casing and work the grommet into place to seal it.

Install the flywheel, making sure that the Woodruff key fits into the keyway in the centre. This is easier if the front of the key is very slightly lower in its keyway in the crankshaft – not too much, or it will tip up and be pushed out of the keyway, just a couple of millimetres only.

Use a holder to stop the flywheel from turning, or lock the engine with a bar through one of the connecting rods. Then add the washer and nut, and tighten the nut to 75Nm (55lb ft).

Do the same to the primary-drive nut, which will not have been tightened yet, remember?

IGNITION TIMING

You will need to fit the cylinders and pistons before you can set the timing, but for reference, the ignition timing for a standard 350LC is set by moving the left-hand piston to a position 1.8mm before TDC and adjusting the stator plate by turning it, using a screwdriver in the slots in the plate (having loosened the screws that secure the stator). The ignition timing is correct when the timing marks on the lug next to the wiring harness (see Fig. 6.10) and those on the stator plate align perfectly.

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