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Nope. Won't know until next season when I tear it down. I am betting on a burned exhaust valve. I have driven it all over the ranch here, routinely take it up to elevation on some of the roughest back country trails you ever saw. Does a commendable job at 75% power. Fuel mileage is awful...

Mule is up and running great. Thank you so much. Sending your payment out tomorrow.

Got it. I did not see any snap ring or retainer and didn't want to get violent with them without knowing for sure. Do the two small round gaskets go there? And the third gasket I can't figure at all.... I have no opening that looks like that.

Thanks so much for the rebuild kit. Will remit to you tomorrow. I have a question about the two valves in the pump.... mainly, how the heck do you get them out of the pump body and put the new ones in?

Engine runs pretty darn good on 3.... just lacks some power and sounds like a Harley at idle. I was concerned about compression, as #1 showed only 75lbs. But then we checked #2 and it showed only about 60lbs. I lost faith in the gauge at that point, as I think 90lbs is normally considered...

This is interesting. Neighbor that is pretty good mechanic said same thing. We swapped plugs between 1 & 2 and the misfire stayed on #1. But still may pick up a new set of plugs. Any reason you suggest swapping 1 & 4?

Thanks for the forum, already got some good advice on an M274A mule here. Any help with this old Willys would be appreciated. Flat top four, think it is a 1952 or there about. This engine runs about as well as one can, with a dead miss on #1. Pulled the plug, not fouled or wet. Firing...

Sent you an email. Did you receive?

The diaphragm in the pump is shot. Thanks for the advice. Any idea where i can get a rebuild kit?

well.... I was thinking I wouldn't just let the oil drip onto the ground.

Thanks for the information. Going to take your advice and disconnect the crank case vent at the carb. I think I will attach a line to it and vent it into a soup can with a sponge in it or something. Will let you know how it works out.

Hello and thanks for allowing me to register on your forum. Thanks in advance for any and all advice / help. I am managing a remote ranch in eastern Oregon and I have been bringing an old M274A mule back to life. The engine runs pretty well, last work done was a new carb and new inline fuel...