Camshafts; Service Points; Camshaft Inspection; Camshaft Installation - Yamaha F100A Wartungshandbuch

POWR
b
6
A 2 A
7
A 2 A
8
A 2 A
9
A 2 A
10

CAMSHAFTS

a
b
1
2
2
2
3
2
4
2
5
A 2

SERVICE POINTS

Camshaft inspection

1. Measure:
Camshaft lobe dimensions a and b
Out of specification → Replace the
camshaft.
Camshaft lobe dimension:
a IN: 37.22 ~ 37.38 mm
b IN: 29.92 ~ 30.08 mm
a EX: 36.90 ~ 37.06 mm
b EX: 29.92 ~ 30.08 mm
2. Measure:
Camshaft journal diameter a
Camshaft cap inside diameter b
Out of specification → Replace the
camshaft or cylinder head.
Camshaft journal diameter:
a: 24.96 ~ 24.98 mm
(0.9827 ~ 0.9835 in)
Camshaft cap inside diameter:
b: 25.000 ~ 25.021 mm
(0.984 ~ 0.985 in)

Camshaft installation

1. Install:
Camshaft
Camshaft cap
Installation steps:
Before installing the exhaust and
intake camshafts, turn the crankshaft
until cylinder #1's piston is at TDC on
the compression stroke.
Install the camshaft caps in the proper
position as shown and with the
stamped
down.
5-21
(1.465 ~ 1.472 in)
(1.178 ~ 1.184 in)
(1.453 ~ 1.459 in)
(1.178 ~ 1.184 in)
numbers facing
E
upside