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3.75 hp engine - done 3 seasons lawnmower. Has been running fine till yesterday. All of a sudden the power just faded away. I thought the engine was going to conk-out, but it just kept on sitting there simpering. I have cleaned air filter and inside of carb. No better. Can you suggest anything else? Thanks Dave Grant in Scotland

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You must clean out the float bowl under the carb. Find the hex nut at the center bottom of the bowl to remove. There will be dirt and/or water.

Clean the hex nut too. It functions as a jet and has a small hole in it.

Dran a bit from the bottom of the fuel tank to. Your problem is indicative of water being sucked up from the bottom of the tank.

Add some fresh fuel and a biot of "gas Dryer" methanol.

Posted on Jul 30, 2009

Testimonial: "Hello Fixya, sorry delay. My eng small-carb built into fueltank-but answer great It got me into carb diaphragms, I replaced - mower now ok, Many Thank"

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Try checking you oil.if it is not low then check the compression to see if your rings or valves are waring.if all that's good then it has to be the carb. either the float is sticking or there's a fuel problem somewhere
also the spark-plug maybe loose. see if it runs better when is is choked if it does then you may not be getting the proper fuel presser check the lines and filter you may have a small fuel leak.

Posted on Jul 30, 2009

Testimonial: "Hello Fixya, sorry delay. My eng small-carb built into fueltank-but answer great It got me into carb diaphragms, I replaced - mower now ok, Many Thank"


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