Checking The Timing Chain Tensioners - Yamaha Star XVS13AA(C) 2011 Service Manual

4. Measure:
• Rocker arm shaft outside diameter "a"
Out of specification → Replace.
Rocker arm shaft outside diame-
ter
11.976–11.991 mm (0.4715–
0.4721 in)
5. Calculate:
• Rocker-arm-to-rocker-arm-shaft clearance
TIP
Calculate the clearance by subtracting the rock-
er arm shaft outside diameter from the rocker
arm inside diameter.
Out of specification → Replace the defective
part(s).
Rocker-arm-to-rocker-arm-shaft
clearance
0.009–0.042 mm (0.0004–0.0017
in)
Limit
0.095 mm (0.0037 in)
EAS23970
CHECKING THE TIMING CHAIN
TENSIONERS
The following procedure applies to all of the tim-
ing chain tensioners.
1. Disassemble:
• Timing chain tensioner
TIP
Squeeze timing chain tensioner clip 2 "5", and
then remove the timing chain tensioner springs
and timing chain tensioner rod.
1
3
2
1. Timing chain tensioner rod
2. Timing chain tensioner spring seat
3. Timing chain tensioner inner spring
4. Timing chain tensioner clip 1
5. Timing chain tensioner clip 2
6. Timing chain tensioner outer spring
7. Timing chain tensioner housing
2. Check:
• Timing chain tensioner housing
• Timing chain tensioner rod
• Timing chain tensioner spring seat
• Timing chain tensioner springs
• Timing chain tensioner clips
Damage/wear → Replace the as a set.
3. Assemble:
• Timing chain tensioner
TIP
Prior to installing the timing chain tensioner rod,
drain the engine oil from the timing chain ten-
sioner housing.
M MMM M MMM M M MMM M
a. Install the timing chain tensioner outer spring,
timing chain tensioner clip 2 "1", and clip 1 "2".
TIP
Be sure to face the ends of timing chain tension-
er clip 2 "1" in the direction shown in the illustra-
tion and to fit timing chain tensioner clip 1 "2" in
the groove "a" in the timing chain tensioner
housing.
5-25
CAMSHAFTS
5
4
7
6
M MMM M M MMM M M MMM M
2
a
1
MMM