Erude 1968 40hp Electric - Carby

jai070404

Seaman
Joined
Jun 15, 2004
Messages
56
Model number 40872. I have two questions. 1. How do I know if the carby has a float or not without dissmantling it. The carby has the number 379486 on it. I am told there is no re-build kit available in Australia. 2. I measured from the top of the transom mount bracket to the cavitation plate to get a shaft length (long or short). It measured 17inches, I was expecting 20 or 25 inches, does this seem right? Thanks in advance.
 

Paul Moir

Admiral
Joined
Nov 5, 2002
Messages
6,847
Re: Erude 1968 40hp Electric - Carby

1. All carburetors (that I know of anyway) have floats. The float operates like one in a toilet tank, shutting off the fuel when it fills to a certain level. The old cork floats were varnished with something like shellac, which sealed them from gasoline. Unfortunetly, modern alcohol laden fuels dissolve the shellac. Then the gas soaks into the cork and it sinks. The gasoline then overfills the bowl, and it floods the engine.<br />Iboats PN 18-7024, the carb kit for your carb, does not come with a float. The Bombardier kit ought to come with a modern fuel resistant float though. If you can't get one from your dealer, try Mastertech. <br />I've heard that you can seal the old cork floats with airplane dope (from a hobby shop), thinned epoxy, or PVC cement. I'm trying out the PVC cement idea right now, but it's too early to know if it works. I tried the thinned epoxy, but it seemed to add a lot of weight to the float. Plus I've had bad experiences with epoxy softening in fuel.<br />2) It's a 15" transom (standard shaft length) outboard. These older Johnny/Rudes measure a little longer than they should, and raising them on the transom can help quite a bit. Just make sure it can still draw water at idle.<br />I hope this answers your questions.
 

jai070404

Seaman
Joined
Jun 15, 2004
Messages
56
Re: Erude 1968 40hp Electric - Carby

Thanks, I'm continuously learning. My dealer found 11 rebuild kits in Sydney and one is on the way.
 
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