22″ Rear Bag Rear Propelled High Wheel Lawn Mower ()
DO ALL THIS OUT IN THE FRESH AIR, WELL AWAY FROM SPARKS AND NAKED FLAMES!
Empty all the fuel out of the tank and dispose of it safely.
Replace with fresh fuel.
Get a small jar and slip it in underneath the carburettor (small mechanism, usually towards the front on the right hand side of a mower engine, with the hose from the fuel tank going into it) to catch the fuel you’re about to drain out.
The bottom of the carburettor is going to look like a small metal bowl, maybe an inch or two across, with a bolt going straight through the middle of it from underneath (sometimes there’s a second bolt too).
Find a spanner that’s the right size (the bolt is usually brass or aluminium, and if you try to use the wrong size of spanner, you WILL damage it) and loosen the bolt in the centre of the bowl by a turn or two until fluid starts to drip out (think a little bit about which way you turn the spanner – the mind plays odd tricks when faced with a bolt screwed up towards you).
Make sure what comes out is going into the jar then look critically at what it is.
What comes out at first is likely to be oily water. This comes out slowly in big drops that stay bunched up when they land in the bottom of the jar. If you put a bit on your finger and bring it to your nose, it smells unpleasantly oily. It may contain rust coloured blobs of microbial contamination.
Once the water is gone, you’ll get petrol (“Gas” to those who speak the other sort of English). This just runs out, spreads out over every surface it touches and makes the place absolutely reek of petrol the moment it comes out.
As soon as you’re getting petrol out, gently retighten the bolt to stop the flow, remove the jar (dispose of the contents safely) and then, once you’re sure all the spilt fuel is safely removed, have another go at starting the mower.
If the machine starts, all well and good. You may find that it runs for a few minutes before hunting uncetainly and then dying. If this happens, youve got another slug of water in the carb, which needs to be drained out as described above.
If it still doesn’t start, the next place to look is the ignition system – If you help with that, post back here explaining what you’ve already done.
Let us know how you get on.
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Other possible causes include: Loose, Dirty or Disconnected Spark Plug in Your Lawn Mower: Check it out, clean off debris, re-connect and tighten. Dirty Air Filter: Clean or replace. Fuel Not Reaching the Engine: Tap the side of the carburetor to help the flow of gas.
By far, the most common issue that causes a stalled motor is a dirty carburetor. The carburetor on your engine is the thing that draws in air and mixes it with the fuel. Contrary to what the movies might make you think, gasoline itself is not very flammable.
If you find that your lawnmower keeps dying, or keeps stalling while cutting grass, then inspect the spark plugs. Look for signs of damage or wear. Something as simple as a cracked porcelain insulator can mean an electrode has been damaged or burned away.
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