Small Engines (Lawn Mowers, etc.)/Expert Profile

David R

On Vacation
returns 01/06/2018

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 in the area

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.


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.

What do you like about this subject?

Troubleshooting is challenging, but very rewarding.

Something interesting about this subject that others may not know:

I will be answering all questions under my Company Name...GLOBALTEK LLC,

Something controversial or provocative about this subject

Why is it that Microsoft can have a product (IE Windows XP)that will sunset/expire with no further tech support available, but people expect to be able to buy parts and service thier lawn and garden equipment that is 30+ years old?

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Mike01/07/151010Thanks for the reply. I appreciate your .....
bruce01/06/15101010thanks for all the info. bruce
Stephen12/18/11101010Thank you for this information. It is .....

Recent Answers from David R

2015-01-06 transaxle input shaft:

You can weld the pulley on the shaft however this will ruin any chances of disassemby in the future.  The biggest challenge when disassembling this unit is resealing it properly and getting the "piston

2015-01-04 idle mixture screw:

Bruce, its really difficult to tell you without seeing the engine, however i can tell you from working over there they dont offer many options with a 1 inch crankshaft.  If you are lucky enough to find

2015-01-01 idle mixture screw:

Bruce,    There could be a couple of different issues, one could be fuel quality, but an unlikely culprit, i would be betting on the orifices starting to narrow due to use. (think of the arteries to your

2013-12-26 Tecumseh Engine:

With the belts off of the engine does the engine turn over easily? Do you have oil in the engine? The symptoms you describe sound like a catastrophic failure in that the engine has perhaps locked up from

2013-12-26 Gas leaking from carb:

Mark, I am sorry to hear you're having problems with your engine. The reason the gas is leaking out is because you have dirt in your carburetor. You will need to disassemble the carburetor and clean out


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