Yamaha F350B - Checking the Sprocket; Checking the Valve Lifter

7-40
Camshaft
e. Secure the exhaust camshaft using a
wrench, and then remove the driven
sprockets “1” and “2”.
When removing the driven sprocket, do not
turn the exhaust camshaft. Otherwise, the
intake and exhaust valves could collide
with each other and be damaged.
3. Remove:
• Camshaft cap
a. Remove the camshaft caps “1”, “2”, and
“3” in the order [1], [2], and so on.
4. Remove:
• Camshaft
• Oil seal
• Valve lifter
TIP:
Make sure to keep the parts in the order of re-
moval.
Checking the sprocket
1. Check:
• Driven sprocket
• VCT assembly
Cracked/damaged/worn  Replace.
Checking the valve lifter
1. Check:
• Valve lifter
Damaged/scratched/worn  Replace.
2. Measure:
• Valve lifter outside diameter “a”
Out of specification  Replace.
1
2
2
1
STBDPORT
[2]
[2]
[2]
[2]
[3]
[3]
[3]
[3]
[4]
[4]
[4][4]
[1]
[1][1]
[1]
1
21
3
2
3