Yamaha 2004 YP400, Service Manual, Page: 228 / 417

5 - 15
ENG
CAMSHAFTS
CAUTION:
_
The camshaft cap bolts must be tightened
evenly or damage to the cylinder head,
camshaft cap, and camshafts will result.
6. Install:
• timing chain tensioner
▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼▼▼
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.
WARNING
_
Always use a new gasket.
c. Tighten the timing chain tensioner bolts
3
to the specified torque.
d. Remove the screwdriver, make sure the tim-
ing chain tensioner rod releases, and then
tighten the cap bolt to the specified torque.
▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲▲▲
T
R
.
.
Timing chain tensioner bolt
10 Nm (1.0 m · kg, 7.2 ft · lb)
T
R
.
.
Cap bolt
7 Nm (0.7 m · kg, 5.1 ft · lb)
3
3
2
1
7. Tighten:
• camshaft sprocket bolts
1
1
1
T
R .
.
20 Nm (2.0 m · kg, 14 ft · lb)