(1) rotate the carburetor main jet needle valve clockwise (close) until it touches its stopping point - DO NOT FORCE OR GO BEYOND THE POINT OF TOUCHING as it may damage the tip.
(2) Rotate the needle valve counter-clockwise (open) 1-1/4 to 1-1/2 turns - this should be close enough to start the engine. Start the engine and let it warm up about five minutes.
(3) Rotate the needle valve clockwise (close) slowly until the engine starts to stall for lack of fuel, then rotate the needle valve counter-clockwise (open) slowly until the engine starts to stall from flooding (too much fuel).
(4) Set the needle valve to a midpoint between the two extremes for the best "purr" of the engine. If the engine "sputters" when a load is added, open the needle valve an extra 1/8 turn for a slightly richer mixture.
If the engine starts and you just want to adjust the carburetor, steps (1) and (2) are not necessary.
You need to either adjust your carburetor richer or leaner while at full throttle.
No, never oil the carburetor linkage. Clean the linkage throughly with carburetor cleaner. If you oil the linkage it will become clogged with dust which the oil will attract.
48oz
190cc
Even though an Intek is not shown, it would be the YouTube video below.
what plug size fits a 3.75 briggs and stratton,and a 19.5 briggs engine and what is the gap. thank you
SAE30
9
It is a 2-cycle 4HP Briggs motor.
A Briggs and Stratton 17.5 horsepower engine can use any type of small engine motor oil. A heavy duty motor oil is recommended.
For a Briggs and Stratton motor 3.5 motor used straight gas and oil in the crank-case, there is no ratio.