Let me know if you know anything about small engine carburators. I picked up a couple books on the subject but have never tackled the job. I have a 8hp tecumseh motor that is not running correct. Let me know if you would be interested in helping me out or looking at it, thanks!
yeah, they are really easy to take care of. are you looking to rebuild it...or just clean it more or less?
My guess is there is a big buildup of gum deposits from old gas in it. I would like to take it apart, clean it and rebuild it. If this doesnt take care of the problem. It is most likely a sheered keyway on the flywheel.
probably the carb or the magneto, i can help rebuild it... but if it needs parts, obviously you would need to source them (Northen USED to be great, i haven't ordered parts in a long time tho)
try just cleaning the main jet with some small gauge wire. it can still run if the keyway sheared, they shear and move maybe only 1/8 of an inch, causing the timing to be all messed up. just pull the recoil cover off and look on the crank, you will be able to see the shards in there if its sheared.
i rebuilt a tecumseh this summer, its really easy the hardest part is tuning the jets to make it run right
Yea, been reading up on it a bit, like your brother said eric the keyway could be partially sheered and causing timing issues. My symptoms are, backfire thru the carb, afterfire thru the muffler, and the muffler heats up so much it starts to turn red. The research i have done has told me to check the keyway, and/or clean/rebuild the carb and re tune it. Neither of which i have done before. The keyway on the auger shaft was sheered that was an easy $5 fix, but this i no nothing about
I'm guessing this is my old one? If so, sorry about the troubles, man. I never operated it long enough to notice these problems (just did the small slab in front of the garage). I can't offer up any advise or even background on it, but gimme a holler if it ends up being an expensive repair, we'll work something out.
Yeah, it could be either. I'm pretty familiar with motorcycle carbs, but I'm guessing they are a bit more complex than a snowblower one (or something similar). It could be excessively lean a/f ratios -- something that can be caused by semi-plugged jets. There might be two jets in the carb, but probably just 1. Like Tim said, use a piece of wire to clean it out. Carb cleaner won't do the trick alone since gummed up gas deposits harden like a mofo. Retarded timing can cause all sorts of backfiring problems and hot running temps as well. I'd say start with the carb first and then go from there.
i used a toothpick to un-gum the jets and it worked awesome...but while your in there you might as well get the rebuild kit...i got mine for ~$20 from ace hardware, that was all the gaskets, anodes, screws for adjusting jets and a new float
dont worry about it man, you gave me a hell of a deal on the snowblower. I am still extremly happy with it, just want to bring her back up to tip top shape. I figured it would need a little tlc, but i love it. I did my driveway the other day in 15-20 min a good 3 inches, that would have taken me atleast 45-hour with a shovel. ok ill start with the jet, thanks tom and everyone else. ill see what ace has for sale, i found a tecumseh rebuild kit as well, thanks!
