Mercury Force 25 H.P. 1989, Power Head - parts catalog
- Home
- Parts
- Outboard motors
- Mercury
- Mercury force 25 h p 1989 parts
- Power head 11
Power Head
(1989) - 256F9A, 257F9A| Parts Diagram | ## | Part # | Description | Qty | Notes |
 | 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 |
Parts list covers the following S/N:
256F9A, 257F9A
