GEARCASE TYPES
| Outboard Model | Housing Type * | Description of Features | Gear Ratio |
|---|---|---|---|
| I-3 20 in | “S” | standard gearset (1-3) | 13:26 (.500) |
| V4 20 in. | “S2” | unique driveshaft with bolted pinion, oversized gearset | 13:26 (.500) |
| -3 / V4 25 in. | “O” | special gear ratio, uses V6 style prop | 12:27 (.444) |
| V4 25 in. Counter Rotation | “O” | special gear ratio, uses V6 style prop | 12:27 (.444) |
| 60°V6 20 in. | “O” | standard gearset (V6) | 14:26 (.538) |
| 60° V6 & 90° V6 20 in. 60° V6 & 90° V6 25 in. | “L” | high speed profile, internal water screen, standard gearset (V6) | 14:26 (.538) |
| 60° V6 & 90° V6 20 in. 60° V6 & 90° V6 25 in. | L2” | high speed profile, external water screens, pressed in propeller bearing housing, performance gearset (V6). 583 ratio is original equipment on 225HO/250/300 HP. | 14:26 (.538) and 14:24 (.583) |
| 30° V6 20 in. 60°V6 & 90°V6 25 in 90° V6 30 in. | “M | heavy duty gearset (V6) | 13:24 (.542) |
| 60° V6 25 in. 90°V6 25 in. / 30 in. Counter Rotation | “M | “CR” shafts, bearings and heavy duty gearset (V6) 1 | 13:24 (.542) |
| 90° V6 29 in. 60°V6 & 90°V6 25 in. 90° V6 30 in. | “M2” | front water inlets and straight leading edge, pressed in propeller shaft bearing housing with retaining flange, heavy duty standard gearset (V6) | 13:24 (.542) |
| 60° V6 25 in. 90°V6 25 in. / 30 in. Counter Rotation | “M2” | front water inlets and straight leading edge, pressed in propeller shaft bearing housing with retaining flange "CR" shafts, bearing and heavy duty gearset (V^) | 13:24 (.542) |
Housing Identification
Remove the trim tab retaining screw, gasket and trim tab from the gearcase.
- Trim tab
Make note of identification markings. Refer to Housing Profiles on p. 299.
- Identification markings
Housing Profiles
