Mercury 225 EFI Service Manual page 383

CYLINDER HEAD INSTALLATION
NOTE : The 3 Liter 200 Work cylinder heads are low compression in design and can be iden-
tified by the casting number 812851C13. The 225 EFI and 250 EFI cylinder heads can be
identified by the casting number 812851C15.
1. Install each cylinder head to engine block with thermostat pocket "UP". Apply light oil
to cylinder head bolt threads and torque bolts to 20 Ib. ft. (27 Nm) then turn an additional
90 .
90-884294 OCTOBER 2001
20
16
a
12
1
7
6
4
9
13
17
a - Cylinder Head Casting Number Location
18
14
10
3
5
8
2
11
15
19
POWERHEAD
52132
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