EconoHorse Tune up

1750 Views 10 Replies 2 Participants Last post by mla2ofus, Feb 3, 2012

patf

Discussion Starter · Jan 28, 2012

I have a 1990 econo horse with a 6hp Tecumseh H60 engine. It has not been used in many years The fuelline was old and the breather tube had rotted through. I replace the gas line and was trying to figure out how to relplace the breather line. since it was rotted off, I could not figure out what it connected to on the engine. (i'm not too knowlogable obviously).

After figuring out what the breather was, I realized there must be some sort of connecting part that broke and was missing. there is just a 1/2 inch hole in the breather plate. I suspect there is supposed to be a part there to connect the tube to. Is that right? For a test run, i just stuck it in the breather hole and it fit in loosly. It was not connected to a fitting.

So i tried starting it up and it it was running, but roughly. it ran a couple mins and stopped. It was setting there for a few mins and I tried to start it again and it was blowing gas out of the mufler. From reading some other posts it sounnded like the gas in the muffler issue could be related to the missing connection with the breather, or do you think it is a carberator problem? Would the orginal roughness be because of no breather connection?

What should I do next. I am thinking...
1. I have to find part to connect to breather, have i ruined that if fuel got in there?
2. Possibly the gas got into the oil from what I was reading about breathers so I should do an oil change.?
3 Any other ideas?

Thanks for your help.

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mla2ofus

· #2 · Jan 29, 2012

Some of those breather tubes have a grommet style end that fits in the breather plate via a groove in the end of the hose. If you can't find one a little"******* engineering might be called for. Be aware if you have to go that route the hose can't have any kinks in it or you'll build up pressure in the crankcase and possibly blow a crankshaft seal or a gasket start leaking oil that didn't before.
As for the gas out the muffler it sounds like a leaking float needle and seat in the carb. Check the oil, if it is over full it probably has run gas into the crankcase via the rings.
Mike

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mla2ofus

· #5 · Jan 29, 2012

W/o a pic all I can tell you is to drive the float pin out w/ a small nail or punch. You've gotta see if something's wrong in the float needle and seat. I'm reasonably certain that is the problem. If the float is hollow shake it while you have it out to see if it has gas inside it.

Mike

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mla2ofus

· #7 · Jan 30, 2012

The throttle spring will pull the throttle open while the governor will pull it back toward idle to control RPM. Therefore, if the engine is stopped the throttle arm on the carb will move easily unless you have the throttle control to full speed. Yes, you could have stretched the throttle spring removing the shroud. Am I to assume you've already had the float needle out when you say you replaced the needle? Was the needle tip metal or did it have a soft plastic tip? If you have air available, try blowing back thru the fuel inlet while you have the needle out. It could have something lodged in the seat causing it to leak gas past the needle and seat.
Mike

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mla2ofus

· #11 · Feb 3, 2012

Glad everything worked out for ya.
Mike

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