First, examine the condition of the connections on the unit. If there is any corrosion on the connections, make
sure to clean it with a wire brush. You can access the cable by removing the cover of the engine, and looking for the shift
control which is located on the shift plate towards the back left side of the engine. Loosen the nut on the bolt that is located
on the left side of the shift plate. Make sure to push the bolt down when re-tightening the bolt if it was not in the lowest
Manually turn the propeller counterclockwise with your hands, while someone else slowly pushes the shift
control into the forward position all the way. The prop shaft should stop as soon as forward gear has engaged. Remove any
slack in the cable by pulling on the cover that goes over the shift cable on the side near the shift lever bolt. Look for
the brass cylinder and pin, and remove them. Turn the cylinder to remove any extra cable. The hole where the pin was should
be lined up with the end of the cable when it is adjust correctly.
Turn the brass cylinder away from the plastic guide
a few turns after you have aligned the pin hole and the end of the cable. Return the cylinder and end of the cable into where
they were on the shift plate. Install the pin and nuts. Manually turn the propeller clockwise this time, while someone else
pulls the shift lever in the full reverse position. The shaft should lock out once reverse gear is engaged.
drive did not engage into reverse, loosen the shift lever bolt located on the rear left side of the engine that you loosened
and tightened earlier. This time instead of pushing the bolt down, push it up a little and re-tighten the nut. Check to see
if you can engage the drive into reverse (step 3 by turning propeller clockwise while someone pulls the shift lever into reverse).
If it doesn't engage into reverse, keep adjusting the position of the stud in the shift plate until it does. Make sure to
double check all the connections before closing up the engine cover. *Note - if you can't get the drive to engage into gear
after you make several attempts at adjusting it, the cable has stretched out more than an adjustment can fix. You will need
to replace this cable a new one (P/N 21450 OEM 865436A03).
21450 Complete Cable Kit 865436A03
P/N 21450 Newer style sets with larger core wire. This installs from the AFT end of the bell housing.
Models from the mid 1960's - 1982 used cables which threaded in from behind the bell housing. You can make an easy modification
to the bell housing yourself by using a 1/4-28 tap from inside of the bell housing OEM / 865436A03. $69.00 Kit includes: P/N 21750 Set screw 10-45590 P/N 21080 Slide / 850752-1 P/N 21090 Set screw
/ 10-31700 P/N 21140 Shift shaft lever / 45518A3 P/N 21430 Guide set / 43433 P/N 21432 Anchor / 43436 P/N
21433 Set screws / 10-20518 P/N 21462 Wrapping and wire / 38473 P/N 21463 Insert / 14705 P/N 21464 Stainless
steel core wire P/N 21710 Cable assembly / 41951A1 P/N 21750 Set screw 10-45590 P/N 21790 Bellows clip / 54-38863 P/N 21791 Hose clamp / 54-85504320 P/N 31160 Rubber gasket / 27-35982 P/N 39622 Bell housing gasket set / 27-94996T2 P/N 80120 Drive shaft o rings 25-48171 P/N 82200 O ring 25-33504 P/N 89080 Bellow / 74639A2
21451 Basic Shift Kit 865436A02
P/N 21451 Same as above, but does not include gasket kit, shift arm, bellows or set screws OEM 865436A02.
$63.15 Kit includes: P/N 21080 Slide / 850752-1 P/N 21090 Set screw / 10-31700 P/N 21140 Shift shaft lever / 45518A3 P/N 21430 Guide set / 43433 P/N 21432 Anchor / 43436 P/N 21433 Set
screws / 10-20518 P/N 21462 Wrapping and wire / 38473 P/N 21463 Insert / 14705 P/N 21464 Stainless steel core
wire P/N 21710 Assembly / 41951A1
89080 Mercruiser Bellow 74639
P/N 89080 Shift cable bellows, installed into the bell housing. OEM 74639. $12.15
508235 Gasket Compound
P/N 508235 Gasket sealing compound. Make sure to use on bell housing outdrive gasket P/N 39622 shown
P/N 90110 Shift cable tool / 91-12037 $24.00
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