Removing prop shaft from K&B 3.5 cc O/B ?

Intlwaters

Help Support Intlwaters:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

riggerman

Well-Known Member
Joined
Mar 18, 2003
Messages
360
Hi all . Do i have to loosen the 5 screws on the lower unit to remove the prop shaft ? If i remember correctly i had to turn clockwise to loosen counter clockwise to tighten last time i think i worked with a K&B lower was 1992. Regards Andris Golts.
 
no need to loosen screws. but yes its left hand thread, so to loosen you'll need to turn to the right, left to tighten

Sent from my SM-N920V using Tapatalk
 
If you have any corrosion buildup inside you may have to, otherwise, no need to remove the screws. Clockwise to loosen.

Sent from my SM-G965U using Tapatalk
 
no need to loosen screws. but yes its left hand thread, so to loosen you'll need to turn to the right, left to tighten

Sent from my SM-N920V using Tapatalk
We must have been typing at the same time, not trying to hijack the thread but what about the O.S. lower unit, if I oil the oil transfer tube will it reach the shaft?
Sent from my SM-G965U using Tapatalk
 
Last edited by a moderator:
Hi all . Do i have to loosen the 5 screws on the lower unit to remove the prop shaft ? If i remember correctly i had to turn clockwise to loosen counter clockwise to tighten last time i think i worked with a K&B lower was 1992. Regards Andris Golts.
Most people have the new style legs where the prop shaft assembly screws in BUT if you have one of the original K&B 3.5 legs it has two small flats on the inside of each side of the housing of the prop shaft bushing that corresponds with flats made into the casting and to remove that type of prop shaft assembly you will have to remove the screws that hold the halves together to remove the prop shaft assembly.

I would play it safe just this first time and remove the screws and separate the halves. It wont take long and after you see what type you have then just go from there. There are a few of the old style units out there. The old style does not have wrench flats on it so if these are not there it most definitely an old style.

-Carl
 
Last edited by a moderator:
The old style ones also have a real short skeg. No more than 1" deep off of the shaft barrel. FYI Newer style has about 2" depth
 
Back
Top