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GuyB1958

Name Guy Barczy
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Date Joined Dec 23, 2010
Date Last Access Dec 23, 2010 9:30 pm
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Re: HH60 Tecumseh help and advice
#1   Dec 23, 2010 9:29 pm
I have a 1979 TroyBilt Horse with a HH 60-105106F. With a lot of research, I've found that Pats Small Engine seems to have more parts available with very reasonable prices. Shipping is usually within just a few days. Here is their link: http://www.psep.biz/index.htm There are a few issues that you may find out regarding this motor. 1) Depending on your specific model, a new crankshaft may not be available, nor are undersized rods. 2) Some people have had some bad luck with replacement / aftermarket rods. This comes together with a simple solution: If your crank is scored or out of round, it will need to be welded and re-machined. I have not had any bad luck with the aftermarket rod, as long as the crank is within spec. The bearing clearance for the rod is only .001 - .002" and if it is in spec in one way, but not in another, you will have wear problems and the rod will not last, regardless of who made it. If a new crank is available for your engine, it will cost you approx. $120, or possibly $100 for a good used one. But I like to use what came originally, so for mine, I went to a reputable crank repair shop, had the rod journal welded and re-machined to the proper spec. I have built many engines over the years for cars, boats, snowmobiles, etc., and many in racing applications. I have NEVER had a welded and re-machined journal EVER go bad on me yet.... EVER! The cost should be about $100 give or take, and you should have a shop in your area, so you don't have to worry about shipping. The other advantage that you have in doing this is that you KNOW that you have a part that fits, and nothing will be different. In finding a crank repair shop to do this, you may have to check around some. Some automotive shops may not be set up to repair a crank of this size. But if you check around, I'm sure you will find a shop that can take care of your crank. Another area of concern is the piston. Replacement pistons are available in standard size, + .010, and + .020 oversize, so make sure you have your cylinder checked for wear with a proper bore gage. You may only need to hone the cylinder for proper seating of the rings. One more small detail that many people seem to miss out on is the oil they use. These engines were designed to run with SAE 30 "NON-DETERGENT" OIL. Never, and I mean NEVER use anything else. Do not make the mistake of using auto engine oil, this is a good way to ruin your rings or rod bearing. All in all, you can completely rebuild your engine for $200 or less, which is considerably less expensive than buying a new engine and having it adapted to your machine. My engine lasted over 30 years originally, before breaking a rod. With a properly rebuilt engine, you can expect to get another 30 plus years of service from it. After a rebuild, you may need to adjust your carburetor again. Over the years of your engine's service, and with the ensuing wear on the motor, your carb may have needed to be adjusted for YOUR machine to run well. After a rebuild, you should go back to the original carb settings to start, and then make any minor adjustments necessary. If you love to tinker and work with engines, as I do, you'll have some fun with this motor. Happy Wrenching.
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