Yamaha WR426F Manual De Servcio Del Propietario página 390

CAMSHAFTS
REMOVAL POINTS
Camshaft
1. Remove:
Timing plug 1
G
Straight plug 2
G
2. Align:
"I" mark
G
With stationary pointer.
Checking steps:
Turn the crankshaft counterclockwise with
G
a wrench.
Align the "I" mark a on the rotor with the
G
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
G
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-
G
shaft counterclockwise one turn.
3. Loosen:
Tensioner cap bolt 1
G
4. Remove:
Timing chain tensioner 2
G
5. Remove:
Bolt (camshaft cap) 1
G
Camshaft caps 2
G
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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ENG