This thread pertains to OMC two-piece drive shaft found in 1992 and newer four- and six-cylinder gearcases. These gearcases are not sold with upper vertical drive shaft and shift may be reused in the replacement unit.
The old gearcase should be disassembled to remove the upper drive shaft. Push out the pin located approximately six inches from the bottom of the lower drive shaft to free the top shaft. Simply unscrew the shift rod.
Installation of the original shaft does not require that you disassemble the replacement unit. Place the shaft into the unit and tap the top of the shaft to snap it into place. Replacement units come with a spring-loaded retainer clip installed in the lower drive shaft to hold the shaft in place. screw the shift rod in. The shaft may seem loose until the water pump is installed.
Shift Rod Heights for 20" OMC-Bambardier Outboards* |
| CYL | YEAR | HEIGHT |
| 2 | 1976-1988 | 20-29/32" |
| 2 | 1989-UP | 21-15/16" |
| 3 | 1978-UP | 21-23/32" |
| V4 C/F | 1978-UP | 21-27/32" |
| V4 Looper-Small | 1986-1992 | 21-15/16" |
| V4 Looper-Big | 1993-2001 | 21-15/16" |
| V4 60° Carb | 1995-2003 | 21-1/4" |
| V6 C/F | 1979-1991 | 22-1/16" |
| V6 Looper | 1986-2003 | 21-15/16" |
| V6 60° | 1991-2003 | 21-1/4" |
| V6 60° - F.I. | 1998-2003 | 21-3/4" |
*Add or subtract 5" for your application ( + or - 1/32" )
Eric Schmidt (Eric@crowleymarine.com)
Crowley Marine1401 Ulster St.Denver, CO 80220 303-355-555
Posted : 21 Sep 09 10:51 
