Johnson 9.9 2 stroke lower unit on 4-stroke motor

Lentine95

Seaman
Joined
Aug 20, 2016
Messages
56
Hey all, I was wondering if a 9.9 lower unit from a two stroke Johnson would fit on the motor of a 4-stroke Johnson. I have a 2005 9.9 four stroke Johnson that has a bad lower unit prop shaft assembly. The prop shaft itself is bent the prop is broken and a few other parts are bad. I found a lower unit for a 2005 9.9 2 stroke Johnson and I was wondering if it would be a direct bolt up or if it doesn't directly bolt up if the prop shaft assembly would swap over. Thanks for any help
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
39,139
That would work on earlier 4 strokes.------But I believe your 2005 model 4 stroke is in fact SUZUKI built and the Johnson 2 stroke will not fit that !!
 

Lentine95

Seaman
Joined
Aug 20, 2016
Messages
56
Turns out my 4 stroke is actually a 2003. Got the model number and tried to cross check part numbers and none match. Thanks
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
39,139
As stated clearly I believe.---------This type of swap would only work for the early JOHNSON / EVINRUDE 4 strokes up to 2000 model year.------------You also had to swap out the driveshaft and shift rod.------------It will not work at all with the SUZUKI built 4 strokes !!!
 
Top