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Briggs & Stratton Quantum XM50

amey01's Avatar
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10-17-05, 07:20 PM   #1  
Briggs & Stratton Quantum XM50


I have a Briggs and Stratton Quantum XM50 that won't start.

It will start if I pour petrol in the carburettor throat, and fuel is definantly getting as far as the carburettor, so it seems the fuel inlet to the carburettor is blocked. Spraying oil (WD-40) into the inlet confirms this - it just squirts back out! Any ideas?


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v8driver's Avatar

Join Date: Sep 2005
Posts: 767

10-17-05, 08:54 PM   #2  
was it stored properly? you know fuel stabilizer. well, in the quantum its kinda hard for some to get to the fuel line, but you can pop it off to check and see if the fuel is flowing freely, the end at the carb. when dribbling gas into the carb, it stays running, its got a blockage in the carb....get some carb cleaner, take the carb off, disassemble it, and blow out any and all holes. then reassemble. if no stabilizer was used during storage, the gas turns rancid, and then gums up, or either the carb intake sucked a bit of trash up, otherwise if gas is not flowing from the tank. the line or tank is clogged. the tank should have a mesh screen filter right at the nipple for the line. trash can settle and clog it. oh and the carb inlet, the float should be a float type carb, if the carb's bowl has gas, it pushes up a inlet needle, keeping gas from flowing in, controling flow, the float can hang up as well and cause problems

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