Briggs and Stratton help

broman12345 · 09-13-2009, 02:40 AM

hello my mower( rover lawn mower with a briggs and stratton quantum XM 50 engine,Model number (12F802) Engine Type (1975-B1) ) will not start ive have tried almost everything i can think of, first i flushed the fuel tank and put new fuel in still didnt start then i cleaned the coil for surface rust and set the gap again and cleaned the flywheel/magneto from surface rust still didnt start then i cleaned out carby and bowl and bowl screw with carby cleaner and cmpressed air in all the holes still didn start then i took out the valves and cleaned all the seats and the valves and the top of the piston and any other excesse carbon there was a lot of carbon still didnt start then i put new spark plug and air filters in still didnt start i also tried starter fluid and still didnt not start. lol the only thing i can think of now is piston ring? i cant think of anything else . can anyone help me !! ???? lol

**K-B** · 09-14-2009, 03:52 PM

Does it have a spark?

k2skier · 09-16-2009, 09:47 AM

Yes, check for spark next, then look at the flywheel key.

09-13-2009, 02:40 AM	#1 (permalink)
broman12345 Registered User Join Date: Sep 2009 Posts: 1 OS: vista	Briggs and Stratton help hello my mower( rover lawn mower with a briggs and stratton quantum XM 50 engine,Model number (12F802) Engine Type (1975-B1) ) will not start ive have tried almost everything i can think of, first i flushed the fuel tank and put new fuel in still didnt start then i cleaned the coil for surface rust and set the gap again and cleaned the flywheel/magneto from surface rust still didnt start then i cleaned out carby and bowl and bowl screw with carby cleaner and cmpressed air in all the holes still didn start then i took out the valves and cleaned all the seats and the valves and the top of the piston and any other excesse carbon there was a lot of carbon still didnt start then i put new spark plug and air filters in still didnt start i also tried starter fluid and still didnt not start. lol the only thing i can think of now is piston ring? i cant think of anything else . can anyone help me !! ???? lol Last edited by broman12345; 09-13-2009 at 02:42 AM.

09-14-2009, 03:52 PM	#2 (permalink)
K-B Moderator, Linux Join Date: Oct 2005 Location: NY Posts: 2,873 OS: Vista, Ubuntu My System	Re: Briggs and Stratton help Does it have a spark? __________________

09-16-2009, 09:47 AM	#3 (permalink)
k2skier Registered User Join Date: Sep 2008 Location: Oregon Posts: 313 OS: XP Home-SP3 My System	Re: Briggs and Stratton help Yes, check for spark next, then look at the flywheel key.