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Mercury 250 EFI - Page 319

Mercury 250 EFI
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POWERHEAD
90-884294 OCTOBER 2001 Page 4A-7
Cylinder Block Assembly
REF
TORQUE
REF
.
NO.
QTY. DESCRIPTION lb-in lb-ft Nm.
1 1 CYLINDER BLOCK
2 4 SCREW (M8 X 40) 21 28.5
3 2 COVER
4 4 STUD–POWERHEAD (M10 X 1.5 X 64)
5 6 STUD–POWERHEAD (M10 X 1.5 X 155)
6 6 WATER DEFLECTOR
7 6 CHECK VALVE
8 3 CENTER MAIN PIN
9 1 DOWEL PIN–LOCATING
10 6 STOP PLUG
11 14 SCREW (M8 X 35) 21 28.5
12 8 SCREW (M10 X 1.5) Note A
13 1 ELBOW
14 1 TEMPERATURE SENSOR 14 1.6
15 2 PIN
16 1 OIL LINE RETAINER
17 10 WASHER
18 10 NUT 50 69
19 1 SENSOR – CRANK POSITION
20 2 SCREW (M5 X 16) 100 11
21 1 LOWER END CAP
22 1 O-RING
23 2 OIL SEAL
24 4 SCREW (M6 X 20) 38 51.5
25 1 PLATE ASSEMBLY
26 3 MOUNT
27 3 SCREW (M10 X 45) 38 51.5
28 2 SCREW (M6 X 12)
29 1 GROMMET – SPLIT
30 6 WASHER
31 1 RETAINER
32 1 CLAMP
33 1 SCREW (M6 X 12)
34 2 SEAL – CYLINDER HEAD
35 6 SEAL
36 2 CYLINDER HEAD
37 2 SEAL – THERMOSTAT
38 2 THERMOSTAT
39 2 GASKET – THERMOSTAT COVER
40 2 COVER – THERMOSTAT
41 4 SCREW (M6 X 25) 100 11
42 40 SCREW (M8 X 50) Note B
Note A – Torque bolts to 30 lb. ft. (40.5 Nm) and then rotate 90°
Note B – Torque bolts to 20 lb. ft. (27 Nm) and then rotate 90°

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