Yamaha WR45OFR service manual Removal Points, Camshaft

CAMSHAFTS

ENG

1

2

b

a

REMOVAL POINTS

Camshaft

1.Remove:

●Timing plug 1

●Straight plug 2

2.Align:

●“I” mark

With stationary pointer.

Checking steps:

●Turn the crankshaft counterclockwise with a wrench.

●Align the “I” mark a on the rotor with the stationary pointer b on the crankcase cover. When the “I” mark is aligned with the stationary pointer, the piston is at the Top Dead Center (T.D.C.).

NOTE:

●In order to be sure that the piston is at Top Dead Center, the punch mark c on the exhaust camshaft and the punch mark d on the intake camshaft must align with the cylinder head surface, as shown in the illustration.

●If there is no clearance, rotate the crank- shaft counterclockwise one turn.

2

1

1

2

3.Loosen:

●Tensioner cap bolt 1

4.Remove:

●Timing chain tensioner 2

5.Remove:

●Bolt (camshaft cap) 1

●Camshaft caps 2

NOTE:

Remove the bolts (camshaft cap) in a criss- cross pattern, working from the outside in.

CAUTION:

The bolts (camshaft cap) must be removed evenly to prevent damage to the cylinder head, camshafts or camshaft caps.

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