I have a poulan pro 260 While using it lost it's spark, changed plug not that. Upon investigation found coil pack messed up because screw came loose..Replaced coil pack with new one but still no spark. Not sure of adjustment of coil ack from flywheel or if something else is wrong. Please help
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If you have changed the fuel filter, and the hoses are not leaking, then you may well have a blockage in the internall filter in the carb, the filter is under the alloy pump cover, usually secured with a single screw.
1st try another good plug, if no spark, remove the pull start and you will see 2 small wires and 1 thick one going to the plug, disconect the one that has a spade conector on it (the other small one should be screwed down on to the coil) refit the starter and check for spark. if none replace the ignition coil/ module as one part.
Change the plug and try it. Fixed - happy chainsaw guy. With a small amount of fuel in the tank, disconnect the kill switch at the coil and try it. Fixed - inspect and repair kill switch wiring, if good replace switch. Re-test. If fixed - happy chainsaw guy. You can do this without a bar and chin if you like. There will need to be oil in the reservoir and do not go to full throttle without them. How ever you do it let it idle until it starves. Poulan.com http://www.ordertree.com/modelinfo/POULAN-WEED-EATER/75.59.html The dash number of your serial number is the type. Find your coil here: Poulan PP4218 Type 2 http://www.ordertree.com/modelinfo/PWE/PP4218-Gas-Saw-Type-2/75.PP4218-Gas-Saw-Type-188.8.131.52.html "Engine Assembly" detail, item 4 There are many PP4218s (Type 1, AV, AV Type 1 & 2, etc. All can be found at the Poulan.Com link.). They probably all use the same coil but please touch base with OrderTree or where ever you place your order to ensure we have the correct coil. They will ask questions about your saw, please have it within easy reach. An index or business card makes a very good gap tool. Place a business or index card between the fly wheel and coil, rotate until the magnetic attraction pulls everything tight together. Tighten the coil screws, rotate the flywheel until the attraction eases and remove the card. Ensure nothing contacts when flywheel is rotated. Just because I am a picky old turd and you might need it. It is a very good test: Ignition Coil Test by SmallEng.com http://www.youtube.com/watch?v=L7WNBDRG4C4 You may need to use a jumper wire between the threaded part of the plug and the cooling fins. You do not have to bend up the electrode. If I can be of any more help you can reply below. I hope you found this very helpful. Lou
start saw when cold and work it hard. if it stalls or quits remove spark plug and hook the plug wire to the plug and ground to the cyl head have switch on and pull the start rop briskly a few times or use a test plug. if there is no spark disconnect ign switch from from the ign wires and pull rope a few more times.spark?= replace ign switch,no spark until engine is cool,replace coil.
Spark should jump at least 1/8 inch gap.You would need the correct coil for the application spaced at 10 to 12 thousands inch.
You might unplug shutoff wire and try,it might be shorted a lttle causing weak spark.