My lawn mower is left outside in the florida weather, really because i have no choice since i moved. I suppose i could cover it with a tarp,but anyways I went to use it and It starts, but revs way too high then almost conks out then revs real high again then a few seconds later almost conks out. it repeats this and does not cut the grass well. it more or less tears it. Any suggestions. I Cleaned out the gas tank,new plugs,oil change,filter change all that good stuff and still the same results. Im not real mechanically inclined so some details would help. Thanks
-Adam
2007-08-21 00:59:47 · 5 answers · asked by Adam 5 in Home & Garden ➔ Maintenance & Repairs
May not spell this right...but it sounds like "loping"...may not even be the right term, but that's what I've called it most of my life. What it is is a fuel/air mixture adjustment. Motor runs high with more fuel...uses it up and runs low because of too much air.
Two possible solutions to this.
1. (I have to assume) you know where and what the carburator is...on it you will find a small screw near where the linkage sets on the carb. May even be two...one will be the idle adjust...but that will be on the linkage itself...the other will be on the side...this will be the air/fuel mixture adjust. Motor vibration can off set this setting....what you can do is (using a screwdriver) turn this screw in (clockwise) until it JUST stops turning..DO NOT tighten...then back this out for 1 1/4 to 1 1/2 turns and restart the engine. If the engine starts you're in good shape...and if it does you can smooth out the engine by SLOWLY turning this screw in till the engine just starts to slow down...then back it off (open it) till the engine runs smooth.
The 1 1/4 to 1 1/2 turn out setting is just an initial setting and is almost universal for this small engine air/fuel mixture...and is a good start point.
option 2. if the above fails you may need to rebuild carb...go to manufacturer and see if you can get a rebuild kit...will need some expertize to do this.
I'd be willing to bet that it's the air/fuel adjustment.
Good luck
Gry
2007-08-21 01:23:35 · answer #1 · answered by shadowpa 3 · 2⤊ 0⤋
I concur with shadowpa, he has good advice. My old craftsman lawn mower was doing this, but instead of trying to fix it my self I took it in for service at Sears. One thing I can tell you to keep a fuel stabilizer in the fuel tank over the winter months, after adding it, run the mower for a few minutes to make sure the stabilizer has filled the carburator. In the spring it'll start right up and run fine.
2007-08-21 01:36:16 · answer #2 · answered by MR. T. 6 · 0⤊ 0⤋
Take the engine model number and go to the small engine shop and pick up a rebuild kit for the carb. I have run into several briggs carbs where the diaphram is bad on newer engines. Clean the carb with a good parts cleaner making sure all the passages are open, check the fuel tank for debris and put it back together with the rebuild kit. It is an easy job and it will run like new.
2016-05-18 22:21:20 · answer #3 · answered by ? 3 · 0⤊ 0⤋
Also check the governor linkage. It is a series of small rods or chains that run from near the flywheel to the carburator. If the machine sat in humid, salt air the linkage may be corroded or binding. You may have to remove the air cleaner to get at it but it should move freely without binding.
2007-08-21 01:50:57 · answer #4 · answered by Hondu 7 · 0⤊ 0⤋
Clean your carburetor out.
2007-08-21 04:12:05 · answer #5 · answered by Anonymous · 0⤊ 1⤋