Yamaha YFZ450S 2003 Service Manual page 159

1
2. Install:
• clips
2 • intake camshaft cap 1
• exhaust camshaft cap 2
• camshaft cap bolts
NOTE:
Tighten the camshaft cap bolts in stages and
in a crisscross pattern, working from the inner
caps out.
CAUTION:
The camshaft cap bolts must be tightened
evenly or damage to the cylinder head,
camshaft caps, and camshafts will result.
3. Install:
• timing chain tensioner
M MMM
a. While lightly pressing the timing chain ten-
sioner rod by hand, turn the tensioner rod
fully clockwise with a thin screwdriver 1.
b. With the timing chain tensioner rod turned
all the way into the timing chain tensioner
housing (with the thin screwdriver still
installed), install the gasket and the timing
chain tensioner 2 onto the cylinder block.
NOTE:
_
The "UP" mark a on the timing chain ten-
sioner should face UP.
WARNING
_
Always use a new gasket.
c. Tighten the timing chain tensioner bolts 3
to the specified torque.
4 - 16
CAMSHAFTS
10 Nm (1.0 m · kg, 7.2 ft · lb)
M MMM M M MMM M M MMM M
Timing chain tensioner bolt
10 Nm (1.0 m · kg, 7.2 ft · lb)
ENG
M MMM M M MMM M MMM