Timing Chain: Service and Repair

Fig. 7 Valve timing marks:

1. Remove crankcase front cover, refer to ``Front Cover, Replace'' procedure.
2. Place No. 1 cylinder at TDC and align timing marks on crankshaft and camshaft sprockets, Fig. 7.
3. Remove camshaft sprocket attaching bolts. Tap lower edge of sprocket with plastic mallet and remove sprocket and timing chain.
4. Align timing marks, Fig. 7, and install timing chain on sprockets.
5. Align dowel on camshaft with dowel hole on camshaft sprocket, then install sprocket to camshaft, using attaching bolts to to draw sprocket fully to camshaft. Torque attaching bolts to 15---20 ft. lbs.
6. Lubricate timing chain with engine oil, then install front cover.