Service manual

4-12
ENG
CYLINDER HEAD
3. Measure:
9
cylinder head warpage
Out of specification
→
Resurface the cylin-
der head.
✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭✭
a. Place a straightedge
1
and a thickness
gauge
2
across the cylinder head.
b. Measure the warpage.
c. If the limit is exceeded, resurface the cylin-
der head as follows.
d. Place a 400 ~ 600 grit wet sandpaper on
the surface plate and resurface the cylinder
head using a figure-eight sanding pattern.
NOTE:
To ensure an even surface, rotate the cylinder
head several times.
✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬✬
CHECKING TIMING CHAIN GUIDE
1. Check:
9
timing chain guide (exhaust side)
Damage/wear
→
Replace.
Maximum cylinder head warpage
0.03 mm (0.0012 in)
http://mototh.com