Mercury Force 90 H.P. 1990 L-Drive, Power Head - parts catalog
USA - EU
Power Head
(1990) - 90LD90C| Parts Diagram | ## | Part # | Description | Qty | Notes |
 | 1 | 10-F2051 | Screw, 1/4 - 20 x 2-1/4 | 21 | discontinued |
| 2 | 819982A6 | Manifold, exhaust | 1 | discontinued, replaces F722168 | |
| 3 | 27-8190231 | Gasket, exhaust port plate | 2 | replaces F692154-1 | |
| 4 | F695151-1 | Plate, support | 1 | discontinued | |
| 5 | 53-F428096 | Retainer, thermo switch | 1 | ||
| 6 | 2 | Thermo switch | 6 | replaces F695449-1 | |
| 7 | 10-20540 | Screw, 1/4 - 20 x 5/8 | 4 | discontinued, replaces F1110 | |
| 8 | 819693 | Cover, thermostat | 1 | replaces F476066-1 | |
| 9 | 24-F664268 | Spring | 1 | ||
| 10 | F664068 | Thermostat 130 degree | 1 | ||
| 11 | 26-F664914 | Seal, thermostat | 1 | ||
| 12 | 27-828319 | Gasket, thermostat | 1 | replaces F476067 | |
| 13 | 1000-F692995 | Cover, cylinder head | 1 | ||
| 14 | 10-98254 | Screw, 1/4 - 20 x 5/8 | 3 | replaces F1502 | |
| 15 | 10-F1883 | Screw, 5/16 - 18 x 2-3/8 | 14 | ||
| 16 | 12-34437 | Washer | 14 | replaces F1987 | |
| 17 | 33-896329824 | Spark plug Champion UL-18-v | 3 | replaces 33-8180071 | |
| 18 | 22-47945 | Plug | 1 | replaces F19109 | |
| 19 | 900-819857A3 | Head, cylinder | 1 | replaces F719518 | |
| 20 | 27-820438 | Gasket, cylinder head | 1 | replaces F369529-3 | |
| 21 | 27-820500A3 | Gasket, transfer port cover | 3 | replaces F40223 | |
| 22 | 817790A1 | Cover, transfer port | 2 | discontinued | |
| 23 | 10-98254 | Screw, 1/4 - 20 x 5/8 | 6 | replaces F1502 | |
| 24 | 10-F1504 | Screw, 1/4 - 20 x 1-1/4 | 2 | ||
| 25 | 12-20553 | Washer | 8 | replaces F8095 | |
| 26 | 10-32132 | Screw, 3/8 - 16 x 1-3/4 | 2 | replaces F1872 | |
| 27 | 10-47688 | Screw, 3/8 - 16 x 2-3/4 | 1 | replaces F1009 | |
| 28 | 10-53734 | Screw, 3/8 - 16 x 3 | 4 | replaces F1873 | |
| 29 | 10-28668 | Screw, 1/4 - 20 x 7/8 | 2 | replaces F1999 | |
| 30 | 16-8263942 | Stud | 1 | replaces F85210 | |
| 31 | F698122 | Seal, crankcase parting line | 1 | ||
| 32 | 17-20433 | Dowel pin | 2 | discontinued, replaces F8563 | |
| 33 | 27-819381 | Gasket, cylinder exhaust | 2 | replaces F85279-2 | |
| 34 | 37-F692398-1 | Decal, wiring | 1 | discontinued | |
| 35 | 27-809748A1 | Gasket set | 1 | replaces FG1028-1 | |
| 36 | 32-F719943 | Tube, water jacket top | 1 | ||
| 37 | 32-F719418 | Tube, water jacket | 2 | ||
| 38 | 17-F719372 | Pin | 2 | ||
| 39 | 17-F691372 | Pin | 1 | ||
| 40 | 23-8283111 | Spacer, thermostat seal | 1 | replaces F719902 | |
| 41 | 800-818153A23 | Cylinder | 1 | discontinued, replaces 800-817881A5 | |
| 800-818153A33 | Short block | 1 | discontinued, replaces FC722010 |
Parts list covers the following S/N:
90LD90C
