Mercury Force 50 H.P. 1990, Crankshaft and Piston - parts catalog
- Home
- Parts
- Outboard motors
- Mercury
- Mercury force 50 h p 1990 parts
- Crankshaft and piston 11
Crankshaft and Piston
(1990) - 507A90A, 507F90A, 507X90A, 507Y90A, 508F90A| Parts Diagram | ## | Part # | Description | Qty | Notes |
 | 1 | 26-828626 | Seal crankshaft, upper | 1 | replaces F474146 |
| 2 | 10-28636 | Screw, bearing cage to cylinder, 1/4 - 20 x 3/4 | 4 | replaces F1864 | |
| 3 | 1100-818072A1 | Cage, crankshaft bearing w/crankshaft seal | 1 | discontinued | |
| 4 | 30-803893T | Bearing, crankshaft, upper main | 1 | replaces F284659-2 | |
| 5 | 31-FA40655 | Race, crankshaft center main bearing w/snap ring | 1 | discontinued | |
| 6 | 31-62596A2 | Cage, bearing with rollers 16 per set | 3 | replaces FK85228-1 | |
| 7 | 10-91012 | Screw, connecting rod | 4 | replaces F85634-2 | |
| 8 | 400-817398A3 | Crankshaft w/upper crankshaft bearing | 1 | discontinued | |
| 9 | 31-F90014 | Bearing, crankshaft, lower main | 1 | discontinued | |
| 10 | 26-819394 | Seal, crankshaft lower | 1 | replaces F40146-1 | |
| 11 | 53-F40410 | Snap ring | 1 | discontinued | |
| 12 | 600-818052T6 | Rod, connecting w/cap and screw | 2 | replaces 600-818052A4 | |
| 13 | 23-F366215 | Spacer, piston pin | 4 | ||
| 14 | 700-F694015 | Piston standard | 2 | discontinued | |
| 700-fSA694015 | Piston .010 over | 2 | |||
| 700-818134A1 | Piston .030 over | 2 | discontinued | ||
| 15 | 39-817869A1 | Ring set standard | 2 | ||
| 39-817869A2 | Ring set .010 over | 2 | discontinued, replaces FSA663260 | ||
| 39-817869A3 | Ring set .030 over | 2 | |||
| 16 | 41-F694017-1 | Pin, piston | 2 | discontinued, replaces F694017 | |
| 17 | 31-F335217-1 | Bearing, piston pin | 2 | ||
| 18 | 28-F85498-1 | Flywheel key | 1 | ||
| 19 | 11-F1968 | Flywheel nut, 3/4 - 16 | 1 | ||
| 20 | 40-F694096 | Retainer, piston pin | 4 | discontinued |
Parts list covers the following S/N:
507A90A, 507F90A, 507X90A, 507Y90A, 508F90A
