AboutDavid R -GlobalTek LLC Expertise Small Air Cooled Engines and applications including Twin Cylinders. A specialist in the Chinese Engine-- i e LIFAN, LONCIN, ZONGSHEN, RATO, LCT, YAMAKOYO, DUCAR, GREYHOUND, (Honda Engine COPY) area. Have personally been to Chinese Engine factories several times Former Day to Day job is in application engineering of 4 cycle Engines. Evaulation, testing and failure diagnosis of Chinese Engines,Briggs and Stratton and Kohler engines daily. In other words I do this everyday.
Experience 30 Years in OPE industry. Briggs and Stratton Master Service Tech, Master Parts Pro. Former owner of OPE dealership servicing and selling Honda, MTD, Murray, Husqvarna, Toro, Lawnboy, Shindaiwa, Briggs and Stratton, Kohler, and Tecumseh. Previous job as trainer for engine manufacturer performing service training for companies like SEARS, HOME DEPOT, LOWES, TSC, etc. Instructor for Technical College.
Education/Credentials Vo Tech Training 1981, Husqvarna Factory Training, Briggs and Stratton Factory Service School(s) Tecumseh Factory Training, Shindaiwa Factory Training, MTD, Hydrogear, Toro, Lawnboy update schools. To many to list in the past 30 years.
QUESTION: I just bought an older rebuilt Tecumseh vertical carburetor 4.0 HP/Craftsman. I want to install it on my 3.5 HP Tecumseh minibike engine but I noticed it has a smaller intake type port near the gas inlet that the original carb. doesn't have. I don't know what it's purpose is and I am wondering if it can be plugged up for my application? Tom
ANSWER: without seeing a picture of your carb, I think your referring to an external vent.
The problem your going to have with this carb if it work is in your throttle response as the other carb (if its truly a minibike engine) has an intermediate circuit in the carb.
What this intermediate circuit does is allow for smooth response when opening the throttle up from idle to fast... -Gunning it so to speak
I can not tell u for sure if its gonna work without seeing it, but i have my doubts. Give it a try though.
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QUESTION: Attached is a photo with an arrow pointing to the port. I wanted to know if I could plug the port up or just leave it as is to use. Thanks Tom
Answer Tom
That is a vent. You can not plug it off. You can however take a piece of small fuel line about 6 or so inches long and stick it on there to allow for proper venting. you can even put a Course threaded machine screw on the other end to keep large contaminants, mud dubbers, etc out of it.
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