0.030
0.030"
try .030 unless it is an Intek OHV and then 0.020"
The proper spark plug for 4hp Briggs & Stratton is a J8 which I use in all my motors.
If the engine is OHV Intek with an RC12YC long-reach plug it is 0.020" If it is a valve in block with a 1/2" reach plug it is 0.030"
what is the champion cross reference for a briggs and stratton spark plug 691043
Champion Spark Plug QC12YC
Champion RJ19LM
Champion rj19lm
.030
0.030 is the gap for briggs and stratton 4.5 hp mower
what plug size fits a 3.75 briggs and stratton,and a 19.5 briggs engine and what is the gap. thank you
The spark plug gap for a Briggs and Stratton 13 horsepower engine should be .030 inches. A spark plug for this engine may be purchased at an auto parts store.