1972 40HP Johnson - chng Clutch Dog and FWRD gear HELP!

boatca

Cadet
Joined
Apr 21, 2002
Messages
11
Hi there... first post for me. Great Forum<br />anyhow I have just purchased a boat with a 72 40hp Johnson Model 40E72. The guy I bouaght it from said it runs strong but needs the Clutch Dog and Forward gear replaced. <br />DO I just have to remove the bottom screws on the leg casing to access it or is it harder than that.<br />Is this and wasy DIY job I am handy and am willing to attempt it.<br /><br />Also dumb question where on the 72 Johnson is the Oil fill plug?<br /><br />Any good sites with manuals online. ANyone suggest a good place to get the Manual<br /><br />Thanks again<br />boatca
 

G DANE

Commander
Joined
Nov 24, 2001
Messages
2,476
Re: 1972 40HP Johnson - chng Clutch Dog and FWRD gear HELP!

Welcome to this forum, and congratulations with your boat. Do you have a manual for the motor. If not i would recomment it.<br /><br />Is this a throughhub exhaust or not ?
 

alcan

Commander
Joined
Dec 14, 2001
Messages
2,505
Re: 1972 40HP Johnson - chng Clutch Dog and FWRD gear HELP!

Hi Boatca<br />This is not a real diffacult task. I would how ever suggest you obtain a manual. I would make sure all the shift adjustments were correct first. If you do tear into it, and it dosen,t look real bad, I would go for just the shift dog.
 

sho305

Petty Officer 2nd Class
Joined
Apr 18, 2002
Messages
172
Re: 1972 40HP Johnson - chng Clutch Dog and FWRD gear HELP!

Just did a 35hp I believe where the bottom under the prop shaft comes off and it was real easy to do. I adjusted the shifter by rotating the prop and feeling when the dogs hit. It run out good and no more popping out of gear. Drives me nuts when I hear people easing those into gear. Pop it in quick and you'll never have to replace it.<br /><br />Oil fill screw is by cavitation plate and drain at bottom on most every outboard I have seen. I have a I/O where you drain it by the bottom screw behind the prop at the seal. The other oil goes in the gas for an old OB, right? ;)
 

jgmilberg

Cadet
Joined
Apr 28, 2002
Messages
11
Re: 1972 40HP Johnson - chng Clutch Dog and FWRD gear HELP!

You can try Ebay for the manual and I saw some clutch dogs on there as well. Do a search for evinrude/johnson.
 

boatca

Cadet
Joined
Apr 21, 2002
Messages
11
Re: 1972 40HP Johnson - chng Clutch Dog and FWRD gear HELP!

awesome thanks for the information.. glad to have found a place for boating info... will keep you informed of my progress...
 
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