My lawnmower is reving up and down and using alot of gas?


lawnmower
Tommy asked:


I change the oil, spark plug, and filter regularly. What am I doing wrong? My last mower did the exact same thing. My current one is only 2 years old and is a Briggs and Stratton 5.0.
Would replacing the carb fix it?
I live in central Florida so I pretty much mow the lawn year round.

This entry was posted on Sunday, February 28th, 2010 at 12:00 am and is filed under Maintenance & Repairs. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

4 Responses to “My lawnmower is reving up and down and using alot of gas?”

  1. excalibur Says:
    March 3rd, 2010 at 6:11 am

    vent on petrol tank blocked?drawing air [carburetor loose]dirt in carb jets? revlimiter spring off? excalibur

  2. Scott W Says:
    March 5th, 2010 at 6:07 am

    it is the governor on the engine that it making it rev up and down and when there is a load on the engine it should run smooth.but check to make sure the air filter is clean a dirty air filter can make it run bad and suck gas. Scott W

  3. pedro7of9 Says:
    March 6th, 2010 at 12:26 am

    loose carb,,,,dirty carb,,,needle jet dirty,,,float adjusted wrong…float ng…[full of fuel or fuel logged]

    remove carb…clean inside and out with carb spray…. upside down too

    do you run all gas out of tank and carb before winter [or run it every 2/3 weeks in winter??? its important pedro7of9

  4. Howard L Says:
    March 6th, 2010 at 7:18 pm

    I’d suggest you run a compression check. How many hours the engine has been run is much more important than how many years old. In my experience the life expectancy of a Briggs engine, consumer variety, is about 100 hours. Price competition forces them to make the engine as cheap as possible. A typical home owner might mow 20-25 hours per season so that amounts to 4-5 years. I’m not knocking Briggs. They make some outstanding commercial engines but what you find in a $200-$300 mass merchandised mower isn’t made for more than a few years use. Howard L

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