EasyManuals Logo

Yamaha F20A Service Manual

Yamaha F20A
444 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #166 background imageLoading...
Page #166 background image
5-26
POWR
E
CAMSHAFT AND VALVES
Rocker arm and rocker arm shaft inspection
1. Measure:
Rocker arm inside diameter a
Rocker arm shaft outside diameter b
Out of specification Replace the
defective part(s).
Camshaft inspection
1. Measure:
Camshaft lobe dimensions a and b
Out of specification Replace the
camshaft.
Rocker arm inside diameter:
16.000 ~ 16.018 mm
(0.6299 ~ 0.6306 in)
Rocker arm shaft outside
diameter:
15.971 ~ 15.991 mm
(0.6288 ~ 0.6296 in)
Camshaft lobe dimension:
a IN: 30.884 ~ 30.984 mm
(1.2159 ~ 1.2198 in)
b IN: 25.95 ~ 26.05 mm
(1.022 ~ 1.025 in)
a EX: 30.884 ~ 30.984 mm
(1.2159 ~ 1.2198 in)
b EX: 25.95 ~ 26.05 mm
(1.022 ~ 1.025 in)
2. Measure:
Camshaft journal diameter a
Camshaft bearing inside diameter b
Out of specification Replace the
camshaft.
3. Check:
Decompression actuator
Excessive wear Replace the cam-
shaft.
Camshaft journal diameter:
a: 36.925 ~ 36.945 mm
(1.4537 ~ 1.4545 in)
Camshaft bearing inside
diameter:
b: 37.000 ~ 37.025 mm
(1.4567 ~ 1.4577 in)

Table of Contents

Other manuals for Yamaha F20A

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Yamaha F20A and is the answer not in the manual?

Yamaha F20A Specifications

General IconGeneral
BrandYamaha
ModelF20A
CategoryOutboard Motor
LanguageEnglish

Related product manuals