25 johnson extension kit question

[bcfryer]

I have a new 2004 Johnson 25hp short shaft motor. I have oem 5" extension made by OMC in 1986. Comes with engine/exhaust tube rubber mounts and a gasket for between the powerhead and exhaust tube. Is it necessary to pull the powerhead and install these mounts or not and go with the other parts only, new drive shaft, shift shaft, water tube , mid section spacer, and extension tube?

 

[bcfryer]

Re: 25 johnson extension kit question

Forgot the part number for the extension kit is 396707. Says for 20,25,30 hp Evinrude/Johnson 15" shaft motors 1985 to present. thanks ben

 

[MarkCz]

Re: 25 johnson extension kit question

I had the same conversion done with a kit I got on e-bay and we chose to not pull the powerhead to install the mounts and new shiftshaft. The main problem with not pulling the powerhead is getting to the shift shaft connector (under the powerhead) my mechanic chose to make up a shift shaft extension that goes down in the lower unit avoiding that problem.

 

[bcfryer]

Re: 25 johnson extension kit question

any Johnson Evinrude experts , please respond help thanks ben