Champion CJ8
The proper spark plug for 4hp Briggs & Stratton is a J8 which I use in all my motors.
No, a Champion spark plug RC12YC and a Briggs & Stratton 692051 spark plug are not the same. While both may serve similar functions in small engines, they are designed for different applications and specifications. The RC12YC is a standard spark plug used in various applications, while the Briggs 692051 is specifically designed for certain Briggs & Stratton engines. It's important to use the correct spark plug type to ensure optimal performance and compatibility.
The B&S 797235 is a resistor plug. You can use a Champion RC12YC.
A Champion CJ8Y or J19LM will perform fine
You could try cleaning the spark plug. That worked for us. Take the spark plug out with a wrench and use sandpaper to clean it.
If you have a different brand spark plug, Champion will have a cross reference. You just need the number from the plug. If you do not have that, you will need the model number from the engine. Briggs and Stratton built a LOT of engines with customizations that may use several different spark plugs. 342 cc is simply not enough information.
You can use a Champion RC12YC, available @ any car or farm store.
The spark plug gap for a Briggs and Stratton 6.75 lawnmower is typically set at 0.030 inches (0.76 mm). It's important to check the specific model's manual for any adjustments or variations. Ensuring the correct gap is vital for optimal engine performance and efficient ignition. Always use the recommended spark plug type for your mower.
I am asking the question. So there is no point in asking me to answer the question if I do not know the answer.
If you mean that the wire came out of the boot, then pull the boot off of the spark plug and use a spark plug socket to remove the spark plug.
Remove the spark plug wires from the spark plugs, use an extension for your Allen wrench, and use a spark plug socket to remove the spark plug.
The best way is to use the spark plug socket out of the factory tool kit. If you do not have that use a normal 5/8" socket to loosen the spark plug. Use the spark plug wire to snap back on after the plug is loose and pull it out. The spark plug is at the very top of the engine, the spark plug wire is a real good indicator of its location.