MERCURY/MARINER
Gearcase Assembly
Figure
#
Description
Part #
O.E.M. #
Qty.
28.
Water Pump Body
43-96148A1 1
➂
29.
Insert
48752 1
➂
30.
Seal
26-38970 1
➁➂
31.
Impeller
47-899842 1
➂
32.
Key
--
28-56654 1
33.
Screw
--
10-96411 1
34.
Washer
12-29245 3
35.
Nut
11-20361 2
36.
Washer
12-36001 1
37.
Nut
11-45592 1
38.
Slinger
25-30271 1
➁➂
39.
Guide Sleeve
23-29804 1
➂
40.
Shift Shaft
--
78902 2 1
41.
E-Clip
53-29641 1
42.
Retaining Ring
--
53-78907 1
43.
O-Ring
25-21836 1
44.
Shift Shaft Bushing
23-77631A2 1
45.
Seal
26-816461 1
➁
46.
Rubber Washer
12-77674 1
➁
47.
Vent Screw
10-79953 1
➁
48.
Drain Screw
22-67892A1 1
49.
Washer
12-19183 2
➁➂
50.
Shift Cam
--
78956 1
51.
Cam Follower
--
89594A1 1
52.
Actuator Rod
--
79911 1 1
53.
Spring
--
24-749910 2
54.
Washer
--
12-78910 1
55.
Locating Pin
--
17-78906 1
56.
Shim Assembly
15-47397A1 AR
Figure
57.
Bearing
31-78172A1 1
#
Description
Part #
O.E.M. #
Qty.
58.
Forward Gear
--
43-78082A3 1
1.
Gear Housing
--
1647-9148S65 1
59.
Roller Bearing
31-73363 2
2.
Speedometer Tube
--
22-85822A10 1
60.
Clutch
--
52-823174 1
3.
Water Insert (Star)
--
66885 1
61.
Cross Pin
--
17-78905 1
3A.
Water Insert (Port)
--
66884 1
62.
Detent Pin
--
17-78909 2
4.
Screw
10-76156 1
63.
Retaining Spring
--
24-78962 2
5.
Nut
11-45812 1
64.
Prop Shaft
44-94148 1
6.
Dowel Pin
--
17-43044 2
65.
Reverse Gear
--
43-85462 1
7.
Stud
--
16-78638 1
66.
Thrust Ring
--
68100 1 1
8.
Stud
--
16-579201 2
67.
Ball Bearing
30-88957 1
9.
Stud
--
16-56297 1
68.
O-Ring
25-31534 1
➁
10.
Stud
--
16-30667 2
69.
Bearing Carrier
43567T1 1
11.
Roller Bearing
--
31-35934A1 1
70.
Roller Bearing
31-30956 1
12.
Sleeve
--
23-98621 1
71.
Seal (Inner)
26-76868 1
➁
13.
Drive Shaft Assembly
45-98682A1 1
72.
Seal (Outer)
26-70081 1
➁
14.
Spring
--
24-34576 1
➀
73.
Key
--
28-30281 1
15.
Pin
--
17-30545 1
➀
74.
Tab Washer
14-79447 1
16.
Pinion Gear
--
43-780811 1
75.
Cover Nut
79448 1
17.
Pinion Nut
11-35921 1
76.
Trim Tab
31640A1 1
18.
Shim Assembly
15-57007A1 AR
77.
Screw
--
10-66024 1
19.
Roller Bearing
31-53079A1 1
78.
Washer
--
12-45176 2
20.
Gasket
27-856101 1
➁➂
79.
Nut
11-34933 2
21.
O-Ring
25-33145 1
➁➂
80.
Screw
--
10-65210 1
22.
Water Pump Base
46-96146A6 1
➃
81.
Thrust Hub
13171 1
23.
Seal
26-89238 1
➁➃
82.
Spline Washer
12-31211A2 1
24.
Seal
26-16977 1
➁➃
83.
Tab Washer
14-31210 1
25.
Gasket
27-856081 1
➁➂
84.
Prop Nut
11-52707 1
26.
Face Plate
32435 1
➂
Not Pictured Prop Nut Kit
11-52707A 1
27.
Gasket
27-856091 1
➁➂
➃ Indicates contents of water pump base 18-3421
➀
Indicates contents of seal kit 18-2653
AR As required
➁
Indicates contents of water pump kit 18-3217
➂
351
