String trimmers, also known as line trimmers, weed eaters, weed whackers, and strimmers, can be troublesome. the Carburetor diagram tecumseh help you to defines all its parts and functions the Carburettor made by them. Do not adjust the carburetor when the engine is cold. the following img is tecumseh 3.5 hp carburetor diagram take a look. Start the engine and let it warm up for approximately 3-5 minutes. I'd really like to fully understand and run this old gal rather than pay through the nose for a newer engine. This setting is approximate and will allow the engine to be started so the carburetor can be fine-tuned. So although the reason isnt readily apparent, it does work. Once I started following their advise, the vast majority of un-explained flooding carbs (after being rebuilt) mysteriously ended. This makes absolutely no sense to me but its an advisory from Tecumseh I picked up on years ago. The points look OK from what I know not pitted or burnt up although possibly a little dirty? I don't know much about points ignition systems. engine side, the needle wont center correctly and may leak. Could this be a bad condenser? With my cheapo digital multimeter on the 2000 k ohms setting black lead on condenser body red lead on condenser wire the ohms jump rapidly up to infinite reading on my meter. I installed a new spark plug although with the plug out lying against the engine the spark looks a little on the yellow side. I've looked at what I think is everything with the fuel system to no avail. Randomly, after running it several times it took off and revved up running very smooth, then stalled and the next time I tryed starting it the misfires and bogging was back. After cleaning the carb it barely ran any better. I cleaned some rust out of the carb and added an inline fuel filter between the tank and carb. It starts and idles but misfires and will not rev up at all. So although the reason isn't readily apparent, it does work.
This makes absolutely no sense to me but it's an advisory from Tecumseh I picked up on years ago. I got home dunked the lower unit in water and started it up. engine side, the needle won't center correctly and may leak. The previous owner said the engine started great and we didn't have a trash can to dunk it in so we took their word for it.
We picked up a 12' boat the other day with a supposedly 1972 sears 3.5hp outboard.
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