Checking The Timing Chain Tensioners; Installing The Rocker Arms And Camshafts - Yamaha Star XVS950A 2009 Service Manual

Rocker arm shaft outside diam-
eter
11.981–11.991 mm (0.4717–
0.4721 in)
5. Calculate:
• Rocker-arm-to-rocker-arm-shaft clear-
ance
TIP
Calculate the clearance by subtracting the
rocker arm shaft outside diameter from the
rocker arm inside diameter.
Out of specification → Replace the defec-
tive part(s).
Rocker-arm-to-rocker-arm-shaft
clearance
0.009–0.037
0.0015 in)
Limit
0.095 mm (0.0037 in)
EAS23970
CHECKING THE TIMING CHAIN TENSION-
ERS
The following procedure applies to all of the
timing chain tensioners.
1. Check:
• Timing chain tensioner
Cracks/damage → Replace.
2. Check:
• One-way cam operation
Rough movement → Replace the timing
chain tensioner assembly.
3. Check:
• Timing chain tensioner cap bolt "1"
• Copper washer "2"
• Timing chain tensioner spring "3"
• One-way cam "4"
• Timing chain tensioner gasket "5"
• Timing chain tensioner rod "6"
Damage/wear → Replace the defective
part(s).
mm (0.0004–
5-17
EAS24040
INSTALLING THE ROCKER ARMS AND
CAMSHAFTS
The following procedure applies to all of the
rocker arms and camshafts.
1. Lubricate:
• Rocker arm shafts
Recommended lubricant
Engine oil
2. Install:
• Rocker arms
• Rocker arm shafts
3. Lubricate:
• Camshaft
Recommended lubricant
Camshaft
Molybdenum disulfide oil
Camshaft bearing
Engine oil
4. Install:
• Camshaft "1"
• Camshaft retainer "2"
TIP
The front cylinder camshaft is identified by the
punch mark "a". The rear cylinder camshaft
does not have a punch mark.
5. Install:
• Front cylinder camshaft sprocket
CAMSHAFTS