1964 75 HP Hp Evenrude Speedifour: No Start

R

rdholmes

Recruit
Joined
Sep 24, 2008
Messages
2
Model #: 75453 A
Serial#: E01697

Hello,

This motor generates spark, but it seems a little weak. It will not start. I changed the plugs and points. The small spring under the rotor is not factory. I was thinking it may need a new coil, but I'm not sure. I'm not that familiar with these motors. It has a magneto. Any suggestions??

Thanks,

Rich
 
Last edited:
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freddyray21

Commander
Joined
Jun 10, 2006
Messages
2,460
Re: 1964 75 HP Hp Evenrude Speedifour: No Start

did you change the condensers? Weak spark can be caused by bad condensers.
 
R

rdholmes

Recruit
Joined
Sep 24, 2008
Messages
2
Re: 1964 75 HP Hp Evenrude Speedifour: No Start

not sure about the condensers. I had the work done by someone else. I'll have to check. Thanks.
 
Evinrude Boater

Evinrude Boater

Lieutenant Junior Grade
Joined
Jul 6, 2004
Messages
1,144
Re: 1964 75 HP Hp Evenrude Speedifour: No Start

Was the motor running when you received it? Could be a lot of things
 
C

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,838
Re: 1964 75 HP Hp Evenrude Speedifour: No Start

Rich, the ignition system should generate a good "snap" when you spin the distributor pulley. The snap is the spark jumping to ground. If you do not get this, check the ignition coil for cracks in the plastic, dirty grounds and/or change the condenser.

You can eliminate the dissy cap, by running a test lead from the coil connector to grround, and see if you get a good spark when spinning the pulley.
 
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