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Lawn mower is over revving - Garden

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There should be a metal tag with a spring going from it to the arm on the carb. bend it with needle nose pliers back towards the carb a little bit. that should get it back close try it a few times till it gets back to where it should be.

Posted on Apr 22, 2017


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I have a Lawn Boy 10685. It sat for about 4 years. It would not start. I replaced the spark plug and added gas. It started right up, but the engine is high revving? what would cause this? How do I fix

Sounds like the return spring on the air vane governor is stretched. Take the shroud off and look for the paddle shaped piece of plastic next to the flywheel. There should be no slack in the attached spring. You can shorten the spring if needed with a pair of needle nose pliers.

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High Revving Honda Lawnmower

When you put the carburetor back on did you get the linkage springs put back in the correct place? If you have a governor spring off or in the wrong place it will run fast. Running at an RPM higher than the recommended one can cause severe internal damage but shouldn't cause it to be hard to start. The hard start can also be from an incorrect linkage connection

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My engine is over revving

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pull off the top cover and look a for some thing blocking the governor linkage

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The lawnmower is revving really high, I'm thinking

Sounds like you are going to have to take a look at the linkages. To do this you will need to remove the air filter and then the air filter housing. Probably have to remove the shroud (cover on top of engine). Now you should have a good look at the throttle linkages. Try to moved them to see if they are stuck. You will be pushing against spring pressure so expect some resistance. Just checking to see if there is freedom of operation to tell you if stuck throttle linkage. If stuck you will have to determine if in carb. or not and then repair.

If this is really helpful, please rate.

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1 Answer

Champion 35 Classic lawmnower with a 3.5hp briggs and stratton engine. Engine starts fine but will not run regularly.Keeps revving and then dying back and then revving again continuously.

Check the governor spring and throttle linkages, something may have come adrift. Also check the throttle shaft and body for wear and excessive clearance which could **** in excessive air, upsetting the mixture.

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Might want to remove the blower housing and check for trash blocking governor mechanism.

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Poulan lawn mower, Briggs Stratton engine, revving problem

Most likely problem is dirt?moisture in the carburetor float bowl. You would have to remove the bowl, clean it out and also clean the main jet up in the center of the carburetor. Another problem could be that the governor is out of adjustment but this is not something a novice could or should do

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