Parts Diagram | ## | Part # | Description | Qty | Notes |
![Mercury Force 25 H.P. 1989 Power Head parts diagram](/parts/outboard.motors/mercury/images/sm.mercury-force-25-h-p-1989-parts.power-head-11.jpg) | 1 | 10-F1107 | Head screw, 1/4 - 20 x 3/4 | 4 | * - indicates part of short block |
2 | 26-F458146 | Seal, crankshaft upper main | 1 | discontinued |
3 | FA458144 | Crankshaft bearing cage | 1 | discontinued |
4 | 27-F458277 | Gasket, crankshaft bearing cage | 1 | discontinued |
5 | 39-817833A1 | Magneto stator ring | 1 | discontinued |
7 | 17-F1727 | Plasti-rivet | 1 | discontinued |
8 | F184122-1 | Seal, crankcase parting line | 1 | |
9 | 800-819466A2 | Cylinder w/crankcase cover | 1 | discontinued, replaces FA683010 |
- | 800-817920A2 | Short block | 1 | discontinued includes all items marked with an asterisk *. also refer to crankshaft and piston page, replaces FC683010 |
10 | 10-28636 | Hex head screw, 1/4 - 20 x 3/4 | 8 | replaces F1864 |
11 | 10-F2005 | Hex socket head cap screw, 5/16 - 18 x 2-3/4 | 2 | discontinued |
12 | 10-73286 | Hex cap screw, 1/4 - 20 x 1/2 | 2 | replaces F1689 |
13 | 2 | Clamp, solenoid for electric start | 1 | replaces F460317-1 |
14 | 10-47819 | Hex socket head cap screw, 5/16 - 18 x 1-1/4 | 4 | discontinued, replaces F2013 |
15 | F85026 | Swivel, shift interlock lever | 1 | discontinued |
16 | 23-26841 | Bearing | 1 | replaces F307818 |
17 | F458977-3 | Lever, shift interlock | 1 | discontinued |
18 | 816514 | Bearing, shift interlock rod | 1 | replaces F84035-2 |
19 | 10-819625 | Swivel, shift interlock bearing | 1 | discontinued, replaces F84026 |
20 | 817805A1 | Rod, shift interlock literature | 1 | discontinued |
21 | 16-F98273 | Rod end connector stud | 2 | limited availability |
22 | 13-F8058 | Internal tooth lock washer | 8 | |
23 | 11-68411 | Lock nut, 3/8 - 16 | 1 | limited availability, replaces F7004 |
24 | 23-F269052 | Bearing shift lever | 2 | discontinued |
25 | 817808A2 | Lever, gear shift | 1 | discontinued |
26 | 11-68219 | Hex nut, 10 - 32 | 6 | replaces F1513 |
27 | 10-F1922 | Hex head screw, 1/4 - 20 x 5/8 | 1 | discontinued |
28 | 16-8263872 | Stud, gear shift lever | 1 | replaces F440209 |
29 | 12-34931 | Plain washer | 1 | replaces F2014 |
30 | 30-F458727 | Ball, shift lever detent | 1 | discontinued |
31 | 24-F183300 | Spring, shift detent | 9 | discontinued |
32 | 10-F1922 | Hex cap screw, 1/4 - 20 x 5/8 | 9 | discontinued |
33 | FA659222 | Transfer port cover | 1 | discontinued |
34 | 21-817741A1 | Valve check | 2 | discontinued w/literature original Force p/n A213740-1 |
35 | F429811 | Screen, cylinder drain | 2 | |
36 | 27-819413 | Gasket, transfer port cover | 1 | discontinued, replaces F458223 |
37 | 27-F513529 | Gasket, cylinder head | 1 | head |
38 | 900-817843A2 | Cylinder head | 1 | discontinued head, replaces 900-817843A1 |
39 | 22-F458109 | Plug, cylinder head | 2 | discontinued |
40 | 12-814806 | Plain washer electric start | 7 | replaces F1739 |
41 | 10-F1882 | Screw, cylinder head | 10 | discontinued, replaces F458936 |
42 | 33-82370M1 | Spark plug L82C | 2 | replaces 33-82370M |
43 | 10-28635 | Hex cap screw, 1/4 - 20 x 5/8 | 2 | replaces F1854 |
44 | F458066 | Thermostat cover | 1 | discontinued |
45 | 27-F458067 | Gasket, thermostat cover | 1 | discontinued |
46 | 2 | Gasket set | 1 | includes items listed below, replaces FG1014-1 |
- | 27-F84792 | Gasket, fuel pump valve | 3 | |
- | 27-F433168 | Gasket, carburetor adapter | 1 | |
- | 27-F433406 | Gasket, deflector plate | 1 | |
- | 27-823606 | Gasket, fuel pump bowl | 1 | replaces F438617 |
- | 27-820490 | Gasket, fuel pump | 1 | replaces F438760 |
- | 27-F458067 | Gasket, thermostat cover | 1 | discontinued |
- | 27-819478 | Gasket, exhaust port plate | 2 | discontinued, replaces F458154 |
- | 27-819413 | Gasket, transfer port cover | 1 | discontinued, replaces F458223 |
- | 27-F458277 | Gasket, crankshaft bearing cage | 1 | discontinued |
- | 27-F458279 | Gasket, cylinder exhaust | 1 | discontinued |
- | 27-F458453 | Gasket, leg exhaust | 1 | discontinued |
- | 27-F513529 | Gasket, cylinder head | 1 | |
- | 27-828925 | Gasket, carburetor | 1 | replaces F85906 |
- | 27-F683279 | Gasket, cylinder exhaust | 1 | discontinued |
47 | 17-F8559 | Dowel pin | 2 | |
48 | 27-819478 | Gasket, exhaust port plate | 2 | discontinued, replaces F458154 |
49 | F458151 | Exhaust port plate | 1 | discontinued |
50 | F458152-1 | Exhaust port cover | 1 | discontinued |
51 | 10-819110100 | Hex head screw, 1/4 - 20 x 1 | 10 | replaces F1532 |
52 | 11-64015 | Hex nut | 1 | replaces F1341 |
53 | 10-F1072 | Head screw, 1/4 - 20 x 1-3/4 | 1 | discontinued |
54 | 16-F286440 | Stud, magneto control lever | 1 | discontinued |
55 | 23-F183813 | Bearing | 1 | discontinued |
56 | F2A458081 | Magneto control lever | 1 | discontinued |
57 | 12-F286282 | Washer | 1 | discontinued |
58 | 11-F1803 | Stop nut | 1 | discontinued |
59 | 828514A1 | Joint, ball assembly | 1 | replaces 8177471 |
60 | F458502 | Rod, throttle cam | 1 | discontinued |
61 | F458509 | Link, magneto stator | 1 | discontinued |
62 | 11-8267088 | Lock nut | 1 | replaces F7008 |
63 | 23-F269319 | Bearing, throttle cam | 2 | discontinued |
64 | 1 | Throttle cam | 1 | replaces F458192 |
65 | 16-F433209-1 | Stud, throttle cam | 1 | |