Checking The Cylinder Head; Installing The Cylinder Head - Yamaha TMAX XP530E-A 2017 Service Manual

EAS30276
REMOVING THE CYLINDER HEAD
1. Remove:
• Cylinder head bolts
• Cylinder head nuts
TIP
• Loosen the bolts and nuts in the proper se-
quence as shown.
• Loosen each nut 1/2 of a turn at a time. After all
of the nuts are fully loosened, remove them.
4
8
6
2
EAS30277

CHECKING THE CYLINDER HEAD

1. Eliminate:
• Combustion chamber carbon deposits
(with a rounded scraper)
TIP
Do not use a sharp instrument to avoid damag-
ing or scratching:
• Spark plug bore threads
• Valve seats
2. Check:
• Cylinder head
Damage/scratches  Replace.
• Cylinder head water jacket
Mineral deposits/rust  Eliminate.
3. Measure:
• Cylinder head warpage
Out of specification  Resurface the cylinder
head.
Warpage limit
0.03 mm (0.0012 in)
3
7
5
1
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a. Place a straightedge "1" and a thickness
gauge "2" across the cylinder head.
Thickness gauge
90890-03180
Feeler gauge set
YU-26900-9
b. Measure the warpage.
c. If the limit is exceeded, resurface the cylinder
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.
TIP
To ensure an even surface, rotate the cylinder
head several times.
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EAS30282

INSTALLING THE CYLINDER HEAD

1. Install:
• Dowel pins
• Cylinder head gasket
2. Install:
• Cylinder head
• Washers
New
• Cylinder head nuts
• Cylinder head bolts
TIP
• Pass the timing chain through the timing chain
cavity.
5-16
CYLINDER HEAD
New
New