Yamaha F400A 2022 - Checking the Camshaft Journal Outside Diameter and Camshaft Journal Inside Diameter

7-52
Camshaft
4. Remove:
• Camshaft caps
See step 6 in “Removing the camshaft,
VCT assembly, and driven sprocket”
(7-48).
5. Measure:
• Width of the Plastigauge “1”
Out of specification → Check the cam-
shaft journal outside diameter and cam-
shaft journal inside diameter. See
“Checking the camshaft journal outside
diameter and camshaft journal inside di-
ameter” (7-52).
Checking the camshaft journal
outside diameter and camshaft
journal inside diameter
1. Measure:
• Camshaft journal outside diameter “a”
Out of specification → Replace.
2. Install:
• Camshaft caps
See steps 2–3 in “Checking the camshaft
journal oil clearance” (7-51).
3. Measure:
• Camshaft journal inside diameter “a”
Out of specification → Replace the cylin-
der head and camshaft cap as a set.
T
R
.
.
Camshaft cap bolt “1”, “2”
1st: 8 N·m (0.8 kgf·m, 5.9 lb·ft)
2nd: 17 N·m (1.7 kgf·m, 13 lb·ft)
Camshaft journal oil clearance
0.020–0.061 mm (0.0008–
0.0024 in)
Limit
0.080 mm (0.0032 in)
[1][1]
[5][5]
[4][4]
[6][6]
[3][3]
[2][2]
[4][4]
[3][3]
[5][5]
[2][2]
[1][1]
[1][1]
[5][5]
[4][4]
[6][6]
[3][3]
[2][2]
[4][4]
[3][3]
[5][5]
[2][2]
[1][1]
[6][6]
[2][2]
[3][3]
[1][1]
[4][4]
[5][5]
[2][2]
[3][3]
[1][1]
[4][4]
[5][5]
[6][6]
[2][2]
[3][3]
[1][1]
[4][4]
[5][5]
[2][2]
[3][3]
[1][1]
[4][4]
[5][5]
2
2
2
2
PORT STBD
1
1
1
Journal diameter
24.960–24.980 mm (0.9827–
0.9835 in)
Journal inside diameter
25.000–25.021 mm (0.9843–
0.9851 in)
a
a
a
a