1954 evinrude 25hp big twin/starting

54 big twin

Recruit
Joined
Aug 15, 2010
Messages
5
Hi i cant get any spark and we dont really know how to start it. dont know if it has a kill switch or someting you have to do to start it.


Thanks
 

Daviet

Fleet Admiral
Joined
Sep 24, 2008
Messages
8,958
Re: 1954 evinrude 25hp big twin/starting

You do not have a kill switch.
If you don't have any spark, you are going to have to pull the flywheel and check the coils and points.
 

54 big twin

Recruit
Joined
Aug 15, 2010
Messages
5
Re: 1954 evinrude 25hp big twin/starting

ok we tried that it and it did spark once but never agian?
 

bktheking

Vice Admiral
Joined
Jul 29, 2008
Messages
5,057
Re: 1954 evinrude 25hp big twin/starting

Tried "that", what is "that" exactly, need more info as to what you did.
 

1946Zephyr

Vice Admiral
Joined
Oct 21, 2008
Messages
5,556
Re: 1954 evinrude 25hp big twin/starting

Post some pics of the coils and mag plate. There's a safe bet that the coils are toast from sitting. If the insulation on the coils are cracked, then they need replacing. Clean the points really good too.:cool:
 

54 big twin

Recruit
Joined
Aug 15, 2010
Messages
5
Re: 1954 evinrude 25hp big twin/starting

we cleaned the points and put it back together and got it to spark once but when we cleaned the points we didnt look at the coils or mag plate.
 

bktheking

Vice Admiral
Joined
Jul 29, 2008
Messages
5,057
Re: 1954 evinrude 25hp big twin/starting

Then you may have bad points/condensor's, cleaning them doesn't always work (points that is). Did you pull the flywheel to do all this cause if so you should have noticed the condition of the coils?
 

54 big twin

Recruit
Joined
Aug 15, 2010
Messages
5
Re: 1954 evinrude 25hp big twin/starting

the coils look in good cond. no split plastic and we dont know what to do know is there any special thing you have to do to start them like twist the throtle.
 

bktheking

Vice Admiral
Joined
Jul 29, 2008
Messages
5,057
Re: 1954 evinrude 25hp big twin/starting

Nope, you should have spark at any point of the throttle being twisted. Start by replacing the points/condensor's. Like previously mentioned, a picture is worth a thousand words, could be a simple wiring mixup.
 

GAFeathercraft

Recruit
Joined
Aug 31, 2010
Messages
2
Re: 1954 evinrude 25hp big twin parts needed

Re: 1954 evinrude 25hp big twin parts needed

Can anyone recomend a source for 1954 Evinrude 25HP parts. I need coils, points, condensors, plugs and plug wires.

Thanks for your help.
 

bktheking

Vice Admiral
Joined
Jul 29, 2008
Messages
5,057
Re: 1954 evinrude 25hp big twin parts needed

Re: 1954 evinrude 25hp big twin parts needed

Check almost anything from 55, all the same goodies under the flywheel, standard points condensors and coils.
 

GAFeathercraft

Recruit
Joined
Aug 31, 2010
Messages
2
Re: 1954 evinrude 25hp big twin/starting

Compression is good. She starts fine, but one cylinder cuts out about every 10-15 seconds. My plan is to replace the points, condenser, coils and plug wires. Any other recommendations on how to resolve this problem would be appreciated.
 

lindy46

Captain
Joined
Nov 27, 2008
Messages
3,886
Re: 1954 evinrude 25hp big twin/starting

Replacing all those components will resolve the problem. Make sure when you install the new coils they are aligned flush with the mounting bosses. If they are too far in or out, they won't work properly.
 

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,226
Re: 1954 evinrude 25hp big twin/starting

"one cylinder cuts out every 10-15 seconds". Hm.m.m.m.m, are you running that thing in gear, on a boat, on the lake? If you are running it in a bucket or barrel, the vacuum cut-out switch may be doing it's job. It's job is to prevent over-revving under a no-load conditon by cutting out one cylinder.
 
Top