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| Hello MTD / Tecumseh Engine owners!
I purchased a lightly used MTD Chipper with 8 HP Tecumseh Engine Model # HM80-155426M, Carburetor 632351, earlier in the week for $120. During the Chipper demo the engine demonstrated difficulty starting & the previous owner explain the engine does not have compression starting release. It takes much effort to pull start an 8 HP engine w/o compression release. I pulled the spark plug & it was load with carbon / un-burnt gas which indicates it has been running much too rich. When I got the Chipper home & I installed a new spark plug & rebuild the carburetor. I adjusted the high speed air / fuel mixture valve & wide open throttle & the engine runs smooth. I also adjusted the idle speed air / fuel mixture valve @ low idle & the engine runs smooth. Starting fluid is always required to start the engine under any conditions. What is the deal with this carburetor? Could my problem be that the 8 HP engine is difficult to pull start because it turn over slowly? Any advice will be much appreciated.
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Follow-Up Postings:
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- Posted by lawnmowerdan ne fla (My Page) on Sat, Jun 12, 10 at 18:41
| just be thankfull you can get any techumche to run at all |
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| We have an Ariens snowblower with a 6.5 hp Tecumseh, OHV, & this engine usually starts on the first pull. Different engine, different carburetor. The carburetor has a synthetic rubber primer button, which helps a lot. I am guessing that your HM-80 does not have a primer button. Is there a practical and simple way to add-on a primer? |
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| The HM 80 is a great engine (for a Tecumseh ;0) The long intake complete w/ elbow lend itself to a few quirks tho. Yes, it does have a compression release, but it is dificult to know pulling over a chipper. I would say get some more time running it, maybe some of your favorite witches brew in the oil/ fuel to clean the engine up a bit more especially if it is low use. Seems like a geat deal. |
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