Checking The Camshaft Sprockets; Checking The Timing Chain Tensioner; Checking The Decompression System - Yamaha Tenere 700 2020 Service Manual

G088948
5. Measure:
• Camshaft journal diameter "a"
Out of specification → Replace the camshaft.
Within specification → Replace the cylinder
head and camshaft caps as a set.
Camshaft journal diameter
21.959–21.972 mm (0.8645–
0.8650 in)
G088949
EAS30936

CHECKING THE CAMSHAFT SPROCKETS

1. Check:
• Camshaft sprocket
More than 1/4 tooth wear "a" → Replace the
camshaft sprockets and timing chain as a set.
a
b
G088950
a. 1/4 tooth
b. Correct
1. Timing chain
2. Camshaft sprocket
1
1
2
EAS30266

CHECKING THE TIMING CHAIN TENSIONER

1. Check:
• Timing chain tensioner
Cracks/damage/rough movement → Re-
place.
a. Lightly press the timing chain tensioner
rod into the timing chain tensioner housing
by hand.
TIP
While pressing the timing chain tensioner rod,
wind it counterclockwise with a hexagon wrench
"1" (Parts No.: 1WS-12228-00) until it stops.
b. Make sure that the timing chain tensioner
rod moves in and out of the timing chain
tensioner housing smoothly. If there is
rough movement, replace the timing chain
tensioner.
EAS30267

CHECKING THE DECOMPRESSION SYSTEM

1. Check:
• Decompression system
TIP
• Check that the decompressor lever pins "1"
projects from the camshaft.
• Check that the decompressor cams "2" and de-
compressor lever pins "1" moves smoothly.
5-15
CAMSHAFTS
1