12.27B Compress the springs and install the collets, making sure they locate in the groove

head, then fit the spring retainer, with its shouldered side facing down so that it fits into the top of the spring,

27. Apply a small amount of grease to the collets to help hold them in place (see illustration). Compress the spring with the valve spring compressor and install the collets (see illustration). When compressing the spring, depress it only as far as is absolutely necessary to slip the collets into place. Make certain that the collets are securely locked in the retaining groove.

28. Repeat the procedure for the remaining valves. Remember to keep the parts for each valve together and separate from the other valves so they can be reinstalled in the same location.

29. Support the cylinder head on blocks so the valves can't contact the workbench top,

then very gently tap each of the valve stems with a soft-faced punch (see illustration). This will help seat the collets in their grooves.

Check for proper sealing of I the valves by pouring a small JHlNTl amount of solvent into each

of the valve ports. If the solvent leaks past any valve into the combustion chamber area the valve grinding operation on that valve should be repeated.

13 Starter clutch and idle gear

₁

removal, inspection and installation

Note: This procedure can be carried out with the engine in the frame. If the engine has been removed, ignore the steps which do not apply.

Removal

1. Drain the engine oil (see Chapter 1).

2. Unscrew the two bolts securing the front sprocket cover and remove the cover and the chain guide (see illustration).

3. Remove the left-hand frame panel (see Chapter 8). Trace the alternator wiring from the left-hand side of the engine and disconnect it at the white 3-pin connector (see illustration). Release the wiring from any clips or ties, and feed it through to the left-hand engine cover, noting its routing.

12.29 Tap the valve stem with a soft-faced punch to seat the collets

13.2 Remove the sprocket cover and chain guide (arrowed)

13.3 Disconnect the white 3-pin connector for the alternator wiring

Engine, clutch and transmission 2*21

13.4 Remove the left-hand engine cover

13.5 Check the operation of the starter clutch by rotating the idle gear (arrowed)

13.6 Withdraw the shaft and remove the gear

4. 

   Unscrew the bolts securing the left-hand engine cover and wiring clamp and remove the cover and clamp, being prepared to catch any residual oil (see illustration). If the cover will not lift away easily, break the gasket seal by tapping gently around the sides with a rubber hammer or block of wood and levering carefully on the leverage points around the edge of the cover. Protect the frame with a piece of wood or rag while doing this. Discard the gasket as a new one must be used. Remove the dowel from either the cover or the crankcase if it is loose.

5. The operation of the starter clutch can be checked while it is in place. Remove the starter motor (see Chapter 9). Check that the idle gear is able to rotate freely anti-clockwise as you look at it from the left-hand side of the bike, but locks when rotated clockwise (see illustration). If not, the starter clutch is faulty and should be removed for inspection.

6. Withdraw the idle gear shaft from the crankcase and remove the gear (see illustration).

7. Remove the alternator rotor - the starter clutch is mounted on the back of it (see Chapter 9). Note: Before removing the alternator rotor, slacken the six starter clutch bolts while holding the rotor centre bolt (see illustration). II the rotor has already been removed from the bike, hold the rotor with a strap wrench to slacken the bolts.

8. Withdraw the starter driven gear from the starter clutch (see illustration). If the gear appears stuck, rotate it anti-clockwise as you

withdraw it to free it from the starter clutch. If the starter driven gear does not come away with the alternator rotor, slide it off the crankshaft.