Camshaft, Camshaft Chain
Cylinder Head Cover (see Cylinder Head Cover Removal)
Pickup Coil Cover
Position the crankshaft at #1, 4 piston TDC.
[A] TDC mark for #1, 4 Pistons
[B] Timing Mark (crankcase halves mating surface)
Camshaft Chain Tensioner (see Camshaft Chain Ten-
Rubber Gaskets and Cylinder Head Cover Gasket
Camshaft Cap Bolts
Camshaft Cap [A]
Stuff a clean cloth into the chain tunnel to keep any parts
from dropping into the crankcase.
The crankshaft may be turned while the camshafts
are removed. Always pull the chain taut while turn-
ing the crankshaft. This avoids kinking the chain
on the lower (crankshaft) sprocket. A kinked chain
could damage both the chain and the sprocket.
Be sure to install the following parts.
Assemble the camshaft (see Camshaft and Sprocket As-
Apply engine oil to all cam parts and journals.
If a new camshaft is to be used, apply a thin coat of molyb-
denum disulfide grease to the cam surfaces.
The exhaust camshaft has a 161 EX mark [A] and the
inlet camshaft has a 161 IN mark [B]. Be careful not to
mix up these shafts.
ENGINE TOP END 5-15