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I recently bought a brand new 372XP and spent the first day trying to start it as per the instruction manual with no success, never even fired once. Removed the plug to find plenty of fuel and that the plug has a good spark. Left it until the next day mainly to allow my arm to recover (& scour the internet for clues). I found a forum that said not to use the decompressor and sure enough without the use of the decompressor button it fired first go with the choke on then I reset the choke & it ran properly on the second pull. The decompressor button can be reset with fine nosed pliers or removal of the top cover by undoing three screws. Good luck it's a great saw once you know how to start it.
it may be froze up, and require a defrosting. use a portable fan to speed up this process , also make sure the fan in the freezer compartment is working, with a little work and a zoom spout oiler, or some light motor oil, the motor can be sparked back to life.. freeze ups are common with the high humidity we are having these days.. jay the pool pump motor repair guy longwood Florida
Yes it could be the gas cap. Check the cap and see if there is a vent hole. Use air compressor and blow out the cap. If this is not working check the oil level, if your machine is equipped with a low oil sensor and your oil is low it will shut it down. If you look on the side of the engine block towards the bottom you will see a plastic housing with a wire coming off, this will be the oil sensor. Remove the wire and see if it will run, but make sure you check the oil before running if it's low add the proper oil check your owners manual. If the oil was low don't remove the wire try to run it. If it still won't run then remove wire and try because the sensor could be bad. It also could be a carburetor problem. If you try the steps above and it still won't run remove the carburetor and clean. Let me know how you make out.
sounds like your chain oil-er is NOT working, pull bar and take a stiff feeler gage and go around the whole bar cleaning the groove out and then make sure the oil hole in bar is clean also because if hole going to bar groove is plugged you won't get oil to lube chain. fill with oil and start and run on piece of cardboard or similar to see if it is throwing oil off chain, if so you are good, if not you are looking at cleaning/and or replacing oil pump Good Luck
you need to find out if it's a carb problem or not, when it quits will the motor still roll over when you pull the cord? or is it seized?, I would check the vent system in the tank to make sure it is venting,also is your chain too tight and/or not getting oil to it. Check to make sure your fuel line in tank is'nt cracked in the tank, so that it may run till fuel gets below crack then won't supply enough fuel. if alls good, then try to open up your "H" speed jet, should be the closest to airfilter try 1/8 to 1/4 turn see what that does,,If it helps fine, If not prob gonna be cleaning your carb and readjusting it, Hope I helped you, would'nt hurt to check muffler screen too for being plugged
Make sure the chain oil is reaching the chain. Can you turn the chain by hand fairly easily? If not, then the chain tension should be adjusted--loosen the drive cover fasteners enough to allow the bar to move up and down somewhat. Turn the chain adjuster screw CCW so that the chain can be moved by hand, but the chain should not droop from the lower bar edge. Re-tighten the cover fasteners and recheck the chain tension. If ok, try to run the saw again--it should run at full speed, 4-stroking lightly, but immediately 2-stroking when cutting. Make sure the fuel mix is fresh using a modern synthetic saw oil and shaking the container thoroughly each time just before filling the tank to prevent oil starvation. Check the fuel filter, air cleaner, and muffler for plugging. Check the fuel lines for decay or other damage. Hope that some of this helps!
Lay the chain out on a table or bench and check for bent/broken links, broken teeth, or damaged drive teeth. Inspect the bar for any damage and clean the small oil passages in the drive end. Inspect the drive sprocket for any tooth damage. Run the motor without the bar and chain for a few moments. Oil should ooze out of the small port in the motor case where the bar fits. If nothing, inspect the oil pump and lines. If oils ok, then reassemble the chain and bar making sure the bottom run of teeth cut toward you. Assemble the cover and mounting nuts finger tight. Tighten the chain up to the lower bar, but not so tight that it can't be turned by hand. Tighten the mounting nuts and recheck tension. Make sure the chain is properly sharpened as a dull chain will quickly loosen due to excess heat when cutting. Check the chain oiling by running the bar tip near some cardboard for a few moments--it should throw off a thin line of oil. Hope this helps!
Remove the drive end side cover after releasing the chain brake if it exists and removing the mounting nuts. The bar should slide back and allow the old chain to be removed. Take out the bar and clean it's oil passages including the two small channels that go out to the chain groove. Clean the entire chain groove. Clean the motor case side where the bar fits to. Run the motor for a few moments to see if oil oozes out of the side port. If ok, reinstall the bar and push back. Thread the new chain over the sprocket, then work it over the bar making sure the bottom run of chain cuts toward you. Pull the bar outward. Replace the cleaned cover making sure the adjustment tang drops into one of the large holes in the bar--you may have to back out the adjustment screw several turns. Replace the mounting nuts finger tight and adjust the chain until it pulls the lower run of chain up to the bar, yet you can still pull the chain by hand. Tighten the bar nuts firmly and recheck the chain tension. Check for proper oiling by running the saw tip near cardboard for several moments--it should leave a thin line of oil on the cardboard. Hope this helps!
I guess it would be good to know saw make and model, but I can give you acouple of things to look for.
-First I would make sure the saw has plenty of bar and chain oil in the tank.
-I would also make sure the oil is getting to the bar and sprocket.
-Check the clutch, make sure it is not hanging up.
Please let me know what you find.
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