Briggs and stratton 92908 5175-02 3.5 hp

SOURCE: Engine runs 2-3 seconds then stops

Drain float bowel
check for water .

SOURCE: 5 HP Briggs and Stratton Engine

Take the coil off clean with sand paper then get a piece of cardboard from a cereal box or cigarette box, put the piece of cardboard in between the coil and the magnetic strip on the flywheel ''believe it or not it is the perfect gap'' 'let the magnet pull the two together'' then tighten the coil down. if still no spark get a new coil.

SOURCE: briggs and stratton lawnmower 4horse power engine needegap specs on coil and points

That's easy man! You will always hear, "You sir, need to gap this or that at EXACTLY .00071542 inches per square meter".

The actual "poor boy fix"-

Put your magneto back on there, and stick a business card from your wallet in between it and the rotor. Let the magneto pull itself to it, you center it, and give it just a hair of breathing room (to slide the card back out). Tighten 'er down, and you got it.

1.- If you can't pull the card out, it is too tight.

2.- If you pull the card out easily, too loose.

3.- JUST enough to pull it out, and have it drag just a bit on the way out is JUST ENOUGH!

Remember, on 4-strokes, they ARE forgiving, and can do miracles even if you try your best to destroy them.

Curtis Sewell

• 7482 Answers
• Posted on Jan 04, 2010

SOURCE: 4.5 hp Briggs& Stratton push mower will not run

You need to rebuild your carb. The diaphram in the carb has gotten hard and is no longer acting as a fuel pump to pump the fuel to the carb. Get a rebuild kit and a compressor (for compressed air) to blow out the jet passages. It is an medium to easy job, just watch the small parts. ----------------------------------------------------------------------------- Hint: Before you remove your fuel/air jets, bottom them out first and count the number of turns it takes to bottom them out and mark it down for each fuel/air jet. When you go to reinstall the fuel/air jets bottom them out and then back them back out to the number of turns before removal. That way the fuel/air jets are set to the right number of turns when it was running right. Good Luck, I hope this helped Please rate me...Thanks

SOURCE: I can start my 4.75 HP Briggs & Stratton

Try replacing the float and needle. The float (floats) and pulls the needle up to let gas through to the carb. It will stay running as long as you press the prime bulb because this sends gas straight to the carb without going through the gas bowl. It's best to remove the carb and clean it then replace the float and needle