1985 25hp johnson lower gearbox shot

Bohogin

Cadet
Joined
Jun 17, 2005
Messages
22
i have recently came into a 1982 25hp johnson outboard and the lower gearbox is shot. can anyone tell me which year models and which hp ranges will interchange. i know where i can get a 35hp outboard will this work?<br />thanks for any help
 

davejnz

Petty Officer 2nd Class
Joined
May 2, 2004
Messages
115
Re: 1985 25hp johnson lower gearbox shot

Is it a 85 or an 82?My manual shows the 73-84 20-25hp lower units being the same.I think it was 85 when they introduced thru-hub exhaust for those motors.The 35hp had it prior to 85.
 

G DANE

Commander
Joined
Nov 24, 2001
Messages
2,476
Re: 1985 25hp johnson lower gearbox shot

The 73 is different. 75 - 84 and 85 - 88 commercial will fit. General all after 75 with nun thru hub exhaust. Some can have the 4 splined driveshaft, but they can be swapped easily, slides out, just by removing waterpump.
 

Bohogin

Cadet
Joined
Jun 17, 2005
Messages
22
Re: 1985 25hp johnson lower gearbox shot

just cranked motor this morning. been setting outside in the weather for about 4 or 5 years. fired right up and ran like a champ with only having to clean out fuel valve. now just need to find a foot.
 
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