Question about Poulan Wild Thing 2375 18" Gas Chain Saw 2.5 Cuin

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Engine pulls over good, without spark plug in , but very hard to

Very hard and jerky with plug in. I tore completly down and found no problem. Acts like too much compression. piston ring bearings all look good. Is it possible the rod could have stretched due to improper oil mixture.

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  • Anonymous Jan 21, 2009

    same as above, but never torn down farther than cleaning filter and wood chips.

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Nope the rod will not stretch.did you put the piston on backwards.ring openings go to the intake side of piston

Posted on Jan 07, 2009

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Mccullough chain saw


Some saws use the compression stroke to pressurize the oil tank for auto oiling. If let set long enough the oil will flow backward into the engine causing this.

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Poulan 38cc wont start


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Jan 28, 2013 | Poulan Garden

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Wont start. When I pull on rope, it is hard and kinda of jerky. Take out spark plug, then it has a smooth pull. Put thumb over hole for spark plug, it has jerky pull again.


Hi mikewgolfer...
The jerky is kinda normal, because it is a two cycle engine with a short stroke piston.

Make sure you are getting spark at the spark plug, to do this:
Remove your spark plug and check to be sure you are getting a bright blue spark at the spark plug.
You do this by grounding the plug on the head of the engine and pulling the crank rope, if you are getting a nice blue spark then:
Sounds like you have dirt/debris in your caburetor jets,fuel passages or a diaphgram that is becoming non-flexible.
Check/Clean/Replace your Air Filter, a dirty air filter can make your engine run to rich with fuel.
Note: ALWAYS USE COMPRESSED AIR TO CLEAN YOUR JETS AND PASSAGES, VERY IMPORTANT.
Note:Before you disassemble the carburetor:
Mark each piece with a awl, or some kind of instrument that will make an alignment scratch before you disassemble the carburetor into separate pieces.
That way you will know which way it goes back together when you reassemble it.
Sometimes you can get by with priming the carburetor or by using starting fluid and letting it run a few times like that, and it will flush the gunk out of the jets,but most of the time you will need to rebuild the carburetor.
Be sure to check your fuel tank for water and dirt/debris, if there is water/debris then you need to clean your tank.
Check you fuel line condition after a while they will degrade and need replacment.
Check/Clean/Replace your fuel filter if you have one, normally they are located in the fuel tank of weedeaters.
When you remove your fuel lines from the carburetor be sure to make a drawing to how the lines are connected to the carburetor.
Normally the big line will be the line the fuel filter is connected to inside of the tank.The smaller of the two lines is the return to the fuel tank from the carburetor after it is pumped thru the carburetor by the primer bulb.
Make sure you are using fresh fuel...and oil mix if your using a two cycle weedeater with the oil to the right mixture and not too much oil as it can cause hard starting.
If the trimmer is over a couple of years old, then I recommend that you buy and install a new carburetor repair kit,because the diaphragm will get hard and that will cause it to be hard to crank.
The diaphgram may look good and flexible, but it can be deceiving and not act as a fuel pump as it should because it has become too hard and will cause hard starting,start and run and shut off, etc.
When you clean your carburetor, I recommend that you use a laquer thinner type cleaner to clean and dissolve the laquer build-up in the float and needle jet passages.
Be sure to remove all plastic and rubber parts before using the laquer thinner because it can dissolve the plastic parts and render them unuseable.
Be sure to use COMPRESSED AIR to blow out all the fuel and air passages.The higher air pressure is needed to blow some of the trash/debris from the fuel or air passages.
Be careful when blowing out the passages, because there are sometimes small rubber type seats in the bottom of some of the passages.
Keep in mind that the float (if you have one) for the carburetor must be level when you go to reassemble the carburetor or follow the instructions you get with the carburetor kit, or you could also ask the parts man that you get your kit from.
When you clean your carburetor and remove the jet screws, you will first need to lightly seat the jet screws.
But before you lightly seat the jet screws count the number of turns it takes to seat the jet screws from their original position.
Be sure to mark the turns down on a piece of paper.
That way when you put the jets back in, you know to lightly seat them first and then turn them back out to their original position before you started.
Note:
The little spring inside of the carburetor goes under the float arm.
That is where your fuel inlet needle/float valve is located...on the arm at the end.
Normally there is a small indetion in the carburetor base and a small protrusion on the underneath of the float arm where the spring will be in the right postion for installation.
The spring will set in the indention and you will install the float arm with the needle/float valve and float rod into position over top of the spring,you will push down until it is in position and then you can tighten the screw that holds the float arm assembly in position.
Once you have your carburetor cleaned/rebuilt that should solve your problem.
Please take time to rate me

Aug 30, 2011 | Poulan P3416 16Inch 34cc 2Cycle Gas...

2 Answers

My stihl 041 saw very old made in germany farmboss but very low hours on it. will pop and smoke a little but not start. When I pull on the starter and it almost starts it gets very hard to pull on rope -...


Answer to 2 year old question about hard starting saw.There is a seal that goes bad and leaks chain oil into the crankcase.This will make it very hard or impossible to pull the starter rope. To start the saw,pull the spark plug, stand the saw on it's end so the bar is pointed up and pull the rope 10-15 times. Replace the spark plug and start.It will smoke for a while.To stop this from happening, always store the saw with the bar pointed straight down.

Jun 29, 2010 | Garden

1 Answer

Ryobi rcs3535.pull start operates easily when plug removed.when plug is replaced the pull start has so much resistance that turning the engine over requires too much effort and it is extremley jerky.


Remove the spark plug, ignition off, and open the choke and throttle. Turn the saw upside down and pull the starter through vigorously to see if the engine expels any fuel. Replace the plug and see if there is any change. Does the engine have a compression release? If so, it may be plugged with carbon--remove and clean or replace it. Modern saws seem to have more compression than earlier saws. I have a new, small Husky saw that is equally hard to pull and no compression release. The cure is to sell this one and find a saw with a compression release, or one that is otherwise not so hard to pull through. Good luck!

Jun 05, 2010 | Garden

1 Answer

Poulan 2150 very hard to pull start..first time this season trying to start...seems like too much compression...pulls nice and easy with spark plug removed..with the spk plug in...very hard to pull..still...


If fuel leaked into the engine over the winter, it could cause very hard-to-pull problems. Remove the plug, ignition off, with the cylinder/head down, pull it through vigorously to see if expels any fuel. Replace last year's fuel with fresh fuel mix. It's a good idea to allow the engine to run out of fuel before storage. Does this engine have a compression release? If so, it may need cleaning to work properly. Hope this helps!

Apr 20, 2010 | Garden

1 Answer

When I pull the cord it is hard to pull in a jerky manner. Is this normal?


Did you perhaps run it on straight gas? If yes then yes.

Determine if the warranty is active first. Most warranties are effective for 1 to 5 years. If yes contact the store where it was purchased or find an authorized repair facility. A written diagnosis by a good independent saw shop ($10-20) might be a good idea at this point. It is difficult to argue repair charges with an authorized repair facility without some documentation in your favor.
1. Remove the starter housing. Does the starter operate smoothly? If yes, reinstall the cover and continue with 2, if no repair starter.
2. Is the saw equipped with a decompression valve? Yes continue, no proceed with 3.
· Leave the ignition off, set the valve and pull the starter.
· Pull gently to release the valve. Is there a difference in the effort required? If yes continue with 3, if no repair or replace the decompression valve.
3. Was this saw perhaps operated without oil mixed with the fuel?
· Remove the spark plug wire and plug.
· Remove the muffler, hold a light at the plug hole and inspect the cylinder through the exhaust port. Is it smooth and shiny or does it appear speckled with dull gray spots or smears?
· Pull the starter slowly, inspect the piston as it rises and falls. Is it a dull gray without scratches and gouges?
· Hold the light at the exhaust port and inspect the cylinder, above the exhaust port, through the spark plug hole. Is it shiny and smooth or speckled with gray spots or smears?
Any spots or smears on the cylinder or deep scratches and gouges in the piston indicate the saw was operated in a lean condition. Repair of this on a home owner quality saw often exceeds replacement cost. A repair estimate by the independent saw shop should be considered.
4. The final likely possibility is the saw has jumped timing. This problem or any not discussed is usually beyond the ability of the operator to repair. Please take it to a good local saw seller/mechanic for a written diagnosis before authorizing any repair. HTH
Lou

Oct 12, 2009 | Poulan Wild Thing 2375 18" Gas Chain Saw...

2 Answers

Will not start and doesn't even fire. New saw used once. New mixed gas added and sill no fire. Acts like the on/off switch is not operating properly??


Take the saw outside and have a fire extinguisher handy.

SCENARIO #1)
With the switch in the OFF position, remove the spark plug and SLOWLY pull the rope.
CAREFUL HERE!
If you notice raw, liquid fuel coming from the spark plug hole you have a fire hazard in you bare hands!

Gradually increase pulling speed to see if you notice any fuel vapors or mist coming from the spark plug hole. If you do, you have found the problem: It's flooded.
Continue pulling rope and use an air blow gun to LIGHTLY blow into the spark plug hole and dry the cylinder. You should pull 20 or 30 times while blowing air in.

SCENARIO #2)
If the cylinder is bone dry reattach the spark plug wire to the plug and touch the outer shell of the plug (or the threads of it) to a metal surface on the saw's engine (AWAY from the spark plug hole!) You can use any metal object to conduct the electricity and increase your reach if needed. Turn the switch back on and pull the rope medium speed and check for spark on the electrode of the plug. If no spark, turn switch to other position and repeat.

NOTE: IT WILL NOT SHOCK YOU as long as you maintain contact with the outer shell of the spark plug and the engine's metal parts.
If spark is present, reinstall plug and try again.

Be sure the choke lever is set properly for either cold or warm starts (whichever applies) and it should start easily for you in the future.
Hope this helps!

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I don't think I can help, but normal starting procedure for me is to put choke on, pull on recoil until it kicks over once. shut off choke and restart. Sounds like you have fixed almost everything & adjusted mag right. Rick

Mar 17, 2009 | McCulloch 16 In 4.5 Hp Electric Chainsaw...

2 Answers

Husqvarna Chain Saw Rope Pulls Very Hard, what is the cause?????????


Has it always done this or has it developed?
Some saws have a decompression button to make it easier to pull over.

Oct 03, 2008 | Garden

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