Checking The Camshaft; Installing The Camshaft - Yamaha F115A Wartungshandbuch

POWR
b
6
7
8
9
10
5260
CAMSHAFTS
5240
a
b
5250
1
2
3
4
5

CHECKING THE CAMSHAFT

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)

INSTALLING THE CAMSHAFT

Install:
• Camshaft
• Camshaft cap
Installation steps
(1) Before installing the exhaust and
intake camshafts, turn the crankshaft
until cylinder #1's piston is at TDC on
the compression stroke.
(2) Install the camshaft caps in the proper
position as shown and with the
stamped numbers facing upside down.
5-22
(1.465 - 1.472 in)
(1.178 - 1.184 in)
(1.453 - 1.459 in)
(1.178 - 1.184 in)
E
5
5