Yamaha LIT-11616-16-02 Checking the Tappet Covers, Checking the Timing Chain Tensioner

CYLINDER HEAD

ENG

NOTE:

●Fasten a safety wire to the timing chain to prevent it from falling into the crankcase.

●When removing the camshaft sprocket, it is not necessary to separate the timing chain.

5.Remove:

●Cylinder head

NOTE:

●Loosen the 6 mm bolts first.

●Working in a crisscross pattern, loosen each 10 mm bolt 1/4 of a turn. After all the bolts are loosened, remove them.

CHECKING THE TAPPET COVERS

1.Check:

●Tappet covers 1

●O-rings 2

Cracks/damage → Replace.

CHECKING THE TIMING CHAIN

TENSIONER

1.Check:

●One-way cam operation (tensioner) Unsmooth operation → Replace.

CHECKING THE CAMSHAFT SPROCKET

1.Check:

●Camshaft sprocket

Wear/damage → Replace the camshaft

sprocket and timing chain as a set.

a 1/4 of a tooth

bCorrect

1 Timing chain

2Sprocket

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