The fuel filter did not look like it was getting any gas. So i was mowing the lawn and barely got a lap before the mower ran out of gasoline. When I have been short on gas , I have added at least 50 % 2 cycle gas to my 4 cycle mower to finish the lawn. Gas mixed with 2 cycle oil was accidentally put into my Toro lawn mower. Tell your son to be careful when fueling lawn mowers. Hi, older craftsman riding mower 12 HP Briggs and Stratton engine. When I finally found out I was ruining the mower, I quit and took out all the mixed gas and tried to dilute it with the right kind of gas. @#) ! The last repair actually worked, but by then my sister-in-law was exasperated... - Craftsman Riding Mower It is a new mower, just used one tank of gas and my daughter was filling it with gas------. We drain the fuel tank and replaced the fuel filter. Had some serious backfires. Under the mower is a drain plug you unscrew. Lawnmower died so I accidentally put gas in the oil tank and tried starting it! Can it be repaired or is - Answered by a verified Technician. If you notice gas mixed in with your engine oil, follow these instructions to address a potential leak. Fuel float in the carburetor being stuck in the open position due to gumming (caused by stale fuel) or debris. I'm 17. Went to change oil after sitting over the winter and when I removed the oil plug, the oil poured out almost looking like dark water. It would not continue to run. Favourite answer. barbchenoz, I have a craftsman model 247.288841 19.5 horse riding mower with a Briggs one cylinder engine. If it make you feel better you could put in a Gas Treatment and that will help clean out the oil and clean the carburetor out too. It may smoke a bit until you use up the next tank of gas. You should only use fuel intended for it and you should avoid fueling the mower when it is hot. Put some gasoline in the gas tank and run it. accidentally put diesel in tanks. Smelled like gas. ... 1 decade ago. The fuel shut-off valve isn’t closed properly. Can gas get into the oil somewhere? since that time it is filling the crank case with oil. I got this forum because your members helped someone a while back with a lawn mower. Drained the diesel ad put in gas. Now it will not start. Pour it out into a bucket and then put some 10W-30 oil in. This new lawnmower I've never used before.. its a johndeere 100 series riding mower. Then hold a paper towel over the spark plug hole and turn the key to the start position. needless to say it did not work well. I accidentally put gas/oil mix in my lawn mower. My neighbor mistakenly put diesel fuel into a new Kubota riding lawn mower that would normally require gasoline. And if so, where would be the places to check? The gas was coming out of the air filter. You haven't started it yet? Since you've got gas in there make sure the mower is cool when you do it. I was informed that the can was mislabeled. This should clear any gas in the cylinder. I shot starter fluid down the carb and it smoked the yard. Now I'm about to replace the lawn mower, which won't start, and is also not mine, and … I spent an hour doing the wrong thing and trying to start it. ... Accidentally put a small 20z bottle of engine oil in 5gallon gas can for lawn mower, thought it was fuel stabilizer. It was a cast-off from a relative who was tired of taking it in to get the "gasoline in the oil" problem fixed. i have a John deer D130 with B & S engine. In my lawn mower, I accidentally put gasoline in the oil compartment. Just drain the oil out, put fresh in and you should be OK. Thanks very much for any help. She put the gas in the oil reserve (! Let the engine sit over night to allow the gas to evaporate. Let the oil drain into a pan. We have a total of 3 mowers right now, from grandparents for free. Not likely the problem ; it has a little oil in the same gasoline ; you may see a little blue smoke when it is running. Let the engine turn over a few times. 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