67 rude 40HP

[warren l. roberts]

i recently bought a jon to replace the one damaged in ice storm-on the back sits a 1967 2cylinder 40 horse-before i could pick the jon up someone stole all
controls-it is a selectric shift-can i hook a manual cable to the shift casting-also on the right side of the block there is what looks like a fuel pump but is a electric device-what is it-above that is a water line to the carb-is that for the choke?this motor runs any help is greatly appreciated THANKS warren l.
does this motor need a prop on it while in water for the impeller to pick up?

 

[larky]

Re: 67 rude 40HP

I would look on ebay for the controls. they show up from time to time. the object you describe that looks like a fuel pump is most likely a vacuum cut-out switch. It is there to prevent a "runaway" engine. it grounds the magneto if the engine is revved in a no-load situation. now the other thing going to the carb is a choke that is designed to sense the exhuast temp and adjust automatically as needed. also, do not run that motor without a prop, it would be a good way to test the runaway switch. you would be looking on ebay for more than a set of controls

 

[tashasdaddy]

Re: 67 rude 40HP

also there is a directive to disable the heat sensor choke. i think F_R has the procedure. there is a way around the shift, described in the forum. but not recommended. you would still need the wiring harness, and trottle controls.

 

[F_R]

Re: 67 rude 40HP

I don't remember the exact year, but I think that by 1967 they had abandoned the pesky hot-water choke and were using a hot-air choke. They hadn't gotten to the thermal switch choke yet, so the thremal switch disableing doesn't apply. The hot-air choke usually works pretty well so leave it alone. To verify, the hot-air choke has a metal tube running between the exhaust cover and carburetor. Problems with it arise when the heat exchanger in the exhaust burns through. You will know when that happens because it will run lousy from smoke inhallation. Also, there is an open fitting below the metal tube, on the exhaust cover. Don't plug it up, it is the air inlet for the choke. If you plug it, the choke won't operate any longer and not only that, the air that normally flows through it is part of the calibrated fuel/air mixture so blocking it off upsets the mixture.