Weak spark can mimic fuel problems. Check the spark quality at the plug end of each wire when it acts up. Should have at least 1/4 inch spark to ground. It's probably electronic ignition, but if points, check the condition and gap.
Does the carb have the small screw in fuel filter at the carb?
Those are known to easily clog. If it's there, take it out, try to blow through it. It should blow through easily if it's good. There may be other filters, inline or incorporated in the pump.
Does it have a mechanical fuel pump? If so with the line disconnected from the carb, and directed into a container, crank the engine. It should give strong pulses of fuel, not a dribble. If an electric pump it should give a steady, strong stream, no dribble, drip, or air bubbles.
Could be a bad pump, bad suction hose, look for dry rot, cracked, collapsed. Fuel line exposed long term to ethanol gas can swell and flake from the inside and still look good on the outside.
Weak spark can mimic fuel problems. Check the spark quality at the plug end of each wire when it acts up
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Today's Featured Article - Tractor Traction - by Chris Pratt. Our first bout with traction problems came when cultivatin with our Massey-Harris Pony. Up till then, this tractor had been running a corn grinder and pulling a trailer. It had new unfilled rear tires and no wheel weights. The garden was already sprouting when we hooked up the mid-mount shovel cultivators to the Pony. The seed bed was soft enough that the rear end would spin and slowly work its way to the downhill side of the gardens slight incline. From this, we learned our lesson sinc
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