
5 - 10
ENG
CAMSHAFTS
6. Remove:
• camshaft cap
1
• dowel pins
NOTE:
_
• Loosen the camshaft cap bolts in the
descending order of the embossed numbers
on the camshaft cap.
• Loosen each camshaft cap bolt 1/2 of a turn
at a time. After all of the camshaft cap bolts
are fully loosened, remove them.
7. Remove:
• intake camshaft
1
• exhaust camshaft
2
NOTE:
_
To prevent the timing chain from falling into the
crankcase, fasten it with a wire
3
.
8. Remove:
• camshaft sprockets
1
8
2
4
6
5
3
1
7
1
2
3
EAS00204
CHECKING THE CAMSHAFTS
1. Check:
• camshaft lobes
Blue discoloration/pitting/scratches
→
Replace the camshaft.
2. Measure:
• camshaft lobe dimensions
a
and
b
Out of specification
→
Replace the cam-
shaft.
Camshaft lobe dimension limit
Intake camshaft
a
34.250 mm (1.3484 in)
b
24.850 mm (0.9783 in)
Exhaust camshaft
a
33.350 mm (1.3130 in)
b
24.856 mm (0.9786 in)
Summary of Contents for 2004 YP400
Page 1: ...2004 YP400 S 5RU1 AE1 SERVICE MANUAL ...
Page 2: ......
Page 8: ......
Page 9: ...GEN INFO 1 ...
Page 11: ...GEN INFO ...
Page 28: ...SPEC 2 ...
Page 30: ...SPEC ...
Page 77: ...CHK ADJ 3 ...
Page 137: ......
Page 138: ...CHAS 4 ...
Page 210: ......
Page 211: ...ENG 5 ...
Page 286: ...COOL 6 ...
Page 288: ...COOL ...
Page 299: ...FI 7 ...
Page 301: ...FI ...
Page 342: ...ELEC 8 ...
Page 378: ...8 34 ELEC LIGHTING SYSTEM ...
Page 404: ......
Page 405: ...TRBL SHTG 9 ...
Page 415: ......
Page 416: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN ...