Yamaha F400A 2022 - Removing the Camshaft, VCT Assembly, and Driven Sprocket

7-48
Camshaft
Removing the camshaft, VCT
assembly, and driven sprocket
When the timing belt is not installed, do not
turn the crankshaft or camshaft. Other-
wise, the pistons and valves could collide
with each other and be damaged.
1. Remove:
• Exhaust joint
See “Exhaust joint (inside)” (7-11).
• Direct injection pump
• Fuel rail
• Fuel injector
See “Direct injection pump and fuel injec-
tor” (6-18).
2. Turn:
•Crankshaft
Do not turn the crankshaft counterclock-
wise more than 45°. Otherwise, the pistons
and valves could collide with each other
and be damaged.
TIP:
Turn the crankshaft counterclockwise 45°
gradually until the “ ” mark “a” on the crank-
shaft is aligned with the“” mark “b” on the
cylinder block.
3. Remove:
• Driven sprocket (PORT) “1”
• Driven sprocket (STBD) “2”
TIP:
After removing the timing belt, secure the
camshaft using a wrench, and then remove
the driven sprocket bolts “3”.
4. Loosen:
•VCT bolts “1”
When loosening or tightening the VCT bolt,
do not secure the VCT assembly. Other-
wise, the VCT assembly could be damaged.
TIP:
Secure the camshaft using a wrench, and then
loosen the VCT bolt “1”.
5. Remove:
• Cam chain tensioners
6. Remove:
• Camshaft caps
TIP:
Remove the camshaft caps “1”, “2”, and “3” in
the order [1], [2], and so on.
ab
45°45°
1
2
3
1