Cleaned carb new lines set carb
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The clutch is not engageing its hot . you can clean the clutch but it will probaly need replaced. i have seen where the drive gear breaks its key in the shaft.
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Examine the plug cap for arcing and the coil wire for chafing. If damaged, it will cause an intermittent no start. Higher temperatures create higher resistance to the flow of voltage; that`s why coils usually fail when the mowers are hot and start working again when the engine cools.
Other things that could cause this issue are bad fuel, weak/colapsed/kinked fuel line, faulty spark plug, faulty ignition/coil, oil over full, clogged air filter, plugged/dirty carburetor, worn engine parts internal rings/valves/etc.
A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and cause the engine to stall.
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. If this doesn`t work, you might need a new fuel filter.
Low coolant, only on liquid-cooled mowers and not air-cooled. Clogged air cleaners, inlet screens or air paths can also prevent the cooling system from working properly on many mowers. Clogged cutting decks can overstrain the engine as it tries to power through with jammed blades, causing it to overheat.
Sometimes, the only sign of lawn mower overheating is the machine simply locking up or shutting off. If the engine has been overworked continuously, it might need a professional tuneup. If you notice that there doesn`t seem to be any external cause behind the overheating, it might be time for some expert service.
The Motor Has Overheated
If your engine has overheated, the lawn mower will cut out. There are a few things that can cause overheating, including: low engine oil, clogged cutting decks and cutting overly thick grass. Mowing your lawn in very hot weather can also increase the risk of it overheating.
The most common cause of a mower that runs for thirty minutes and then dies is a faulty armature. A faulty gas cap is the second most likely cause.
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Cranks up and runs fine ,then starts cutting out then runs fine and starts cutting out again
I am no pro but my suggestion to you is if you have changed your spark plug recently check the gap on it and make sure it is right and make sure is the right spark plug for it. Also check the oil if it is low the motor as it gets hot will start to sputter or if it has to much oil it will have an air lock and blow you Lhead gasket after a while. Another thing to check is the air filter to make sure it is clean and check the timing with this if you don’t trust your self ask an repair expert for your brand of mower.
My lownmower will start and run only a min. and cut off…If I hot wire the switch on the bottom of the carb it will run great..But as soon as i release the brake it cuts off….I have replacer the relay and the saftey switch…Did not help at all.. I even jumped across the seat switch…Not help…
Check to see if the 20 amp fuse is blown if so replace it & see what happens
Uneven grass cutting
I have seen dull blades, blades not installed right and an un-level deck cause that.Hope this helps.
Seems to start easily run for a few minutes and then slow and stop–bulb remains full –gas is good–have tried half choke in case too lean–did not solve–also seems possibly related to the angle I hold it at–seems to cut out quicker if blower tube angled more downward.
Your filter may be hanging up in the tank. you also my be losing compression
Bad Clutch?? 455 rancher 20″ bar) I have owned it for two years and cut tons of fire wood with it. I recently replaced the oil pump. Yesterday I’m cutting oak like butter. Chain saw is cutting fine.. For no apparent reason it starts struggling to cut. I figure I hit something with the chain. I go to sharpen and notice that the clutch it’s red hot. I take it apart clean it up sharpen it up put it back together fire it up and start to cut. It starts to cut on angle and has no power?? runs fine revving it but will not cut?? What do you think?
Hi Before other checking change the spring of the clutch(2). best regards savumihai71
42 inch mower cuts uneven, what is the problem?
Several things here could be the problem. Check to see if mower deck is level, measure distance on both side on a level surface. Check tire’s for low air. If you’ve replace the mandrel’s lately, some have a left & right side & if not put back together properly this will cause uneven cutting
My Husqvarna 128cd weedeater would run with choke on but not in the run position. Sometimes it would run in the run position but would not stay running. I had it running and then it cut off. I now cannot get it to crank at all. Any ideas
More than likely a fueling issue, wrong fuel air mix or air leak somewhere
Mt999 chainsaw. Brand new. Not cutting through wood although blade rotating. Just seems to be burning wood.
Shouldnt be using a chainsaw if you cant figure the chain is on wrong…….just saying…