Question about Poulan Pro Pp4218av 18" Gas Chain Saw 952802031

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Will not start have checked fuel lines ok,cleaned spark plug ok,checked wires all checked ok,saw eas running fine shut off to change chain and refuel and would not start after

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Just check that it has not picked up on the piston, remove the muffler and check the condition of the piston through the exhaust port, any sign of scuffing and the saw will need to come apart for further investigation.

Posted on Apr 06, 2011

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My poulan 4018wt has been a hard starter from new. It started to act up out of the blue and started shutting off halfway into the cut and didn't always want to idle right. So I changed the spark plug,

I'd say the most probable culprit is the fuel.... I'd first try dumping the tank out, mixing fresh gas with the addition of a fuel stabilizer and start the saw. It'll quickly vent any old gas in the line and should begin to run fine with the new mix. If not, consider returning it to the service center for adjustment.

Never use gas that has sit on a shelf for months at a time as it becomes 'stale' (for lack of a proper term). Todays 'formulated fuel' can be a cause a bit of a problem for some small engines. Anytime you refuel, shake the can to remix prior to filling.

The oxygenated nature of the blended gas sometimes causes the chain saws to run a little 'lean'...meaning too much air to fuel ratio which could be a portion of your problem. A lean running saw will run hot and scoring of the piston or cylinder wall is possible. Some finely tuned professional saws need carb adjustments between the summer blend and the winter blend gas.

Mar 24, 2015 | Poulan Garden

1 Answer

The chain saw won't start when it is hot

Remove the spark plug to check for spark when it doesn't run. If spark is blue and snappy, pour a little fuel mix into the plug hole, replace the plug, and try to start. If you get a few pops, then concentrate on the fuel system. Check the fuel filter, air cleaner and muffler for any plugging. Check the condition of the fuel lines. Make sure the carburetor fasteners are tight including the ones holding the carburetor to the cylinder. Make sure that you are using fresh fuel with modern synthetic saw oil mixed at 50:1 ratio. Premix the two in it's own can and shake vigorously before filling the saw. If still having a problem, disassemble the carburetor, clean, and re-kit if necessary. Pay particular attention to the lower chamber diaphragm and the fuel metering valve that it controls. Go to: for a 12 page article on Walbro brand carburetors for great theory and troubleshooting information. Hope this helps!

Jun 06, 2010 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

1 Answer

Oil Leak

When the saw shuts itself off, remove the spark plug and check for blue, snappy spark with a fresh/clean plug set at 0.020" gap. If nothing, remove the flywheel cover to expose the wheel and ignition module. Remove the ignition switch wire and try for spark, if still nothing, check the pole gap at the module with a thin business card. Bring the flywheel magnets under the module poles, insert the card into the existing gap, loosen the mounting screws to allow the module to contact the module poles, then tighten the screws. Rotate the wheel somewhat to remove the card, and try for spark again. If still nothing, replace the module and install as above. Don't forget the ignition switch wire. If the first test gave good spark, put some fuel mix into the plug hole and try for start--it should pop several times. If ok, release the fuel cap for a moment and see if restart can be done. If it does, then clean the vent area on the tank side (a small bronze plate in the tank case). Check the fuel filter, air filter, and muffler for plugging. Check the fuel lines for decay or other damage. Does the primer pump pull fresh fuel into itself when pumped several times? If not, remove the carburetor and clean it inside and out with spray carburetor cleaner. Check the lower chamber diaphragm for flexibility with no holes or cracks. Hope some of this gets you running!

May 30, 2010 | Homelite ZR10926 16" Chain Saw

1 Answer

Can't start my Chain Saw Husqvarna 350.

The fuel may have been replaced, but is the fuel filter clean or is the fuel line cracked? Even though you cleaned the spark plug, did you check to see if it has a spark? If not, maybe a new spark plug or check the wire to make sure there is nothing blocking where the wire and spark plug connect. Is the air filter clean? Just a few more things to check out...

May 14, 2010 | Husqvarna Chain Saw 20" Bar

2 Answers

My 18in homelite saw starts ok, cuts fine but, when you shut bdown to refuel or take a short break, (over 5 min) it will not restart till it cools down or about a half hour. Thanks

Loosen the fuel cap when you shut it down tighten it before you restart. If this fixes it you have a plugged fuel vent. HTH

Oct 06, 2009 | Homelite Garden

1 Answer

Describe your Husqvarna "Chain Saw -

Remove the spark plug and test for spark. If ok, try some starting fluid in the plug hole, install the plug, and try to start. If it runs a short time, it is not getting fuel. Check fuel lines including inside the tank. Clean or replace the air filter. If this saw is fairly old, the carburetor probably needs a re-kit and cleaning. Does it have good compression? Check the muffler for plugging. Make sure the fuel/oil mix is fresh. Good luck!

Sep 12, 2009 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

1 Answer

Starts ok when cold. acts like it's out of fuel when hot.

Clean or change the sparkplug. Also make sure you have fresh gas and the proper fuel mix.

Jul 23, 2009 | Poulan Pro 42CC 2 Cycle Chainsaw, 18"

2 Answers

Ryobi 18" petrol chainsaw won't start

my guess is that you have a crack or a hole in one of your fuel lines. this is very common in chainsaws and weed eaters because they are used very little and sit for a long time. try checking this and repair if necessary. let me know if this works.

Mar 08, 2009 | Ryobi 18-inch Electric Chainsaw Chain Saws

1 Answer

Husqvarna mod 41 chain saw wont start

If checking spark make shore the out side if plug is earthed to chain saw.
Fresh clean fuel, clean fuel filter filter pull exhaust off and check piston is ok. Than check for flooding. start there.

Jan 03, 2009 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

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