- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
The fuel/air mixture in any gasoline-powered engine is regulated by the carburetor, and the carburetor in a Stihl chainsaw is factory-adjusted to provide the best performance.... You'll find three adjustment screws for the carburetor, usually located under the air filter cover.
Most Stihl carburetors built after 2000 have limiter caps that prevent much adjusting. the standard for adjustable carburetors is 1 turn out on both high and low then set rpm of idle and high end to specs.
If you need to adjust the engine to get it running there is a problem somewhere else in the systems. see a dealer like www.arcolawn.com for help.
Check for plugged fuel filter, hard/cracked/rotten fuel lines, plugged muffler and air cleaner, or loose fasteners on the carburetor. If no help, dismantle the carburetor and check the lower rubber diaphragm for hardness or cracking. Make sure to have fresh fuel mix in the tank. If the L jet needle has a slotted-head, a small screwdriver can be used to back out the adjustment CCW about 1/4 to 1/2 turn. If the adjustments have 'D' heads, you will need to take it to a servicing dealer that has the proper tool. Hope some of this helps!
Clean the muffler spark arrestor screen and check the cylinder port for carbon build-up at the upper edge. Try presetting both carburetor H and L adjustments (from lightly CW stops) 1-1/2 turns CCW each. Start the engine and allow to warm up. Pull the throttle wide open and adjust H CW until the engine speed increases, but still 4-stroking. Correct setting is when the engine 4-strokes, but immediately 2-strokes when cutting. Allow to idle and adjust L for smoother running, yet allows the engine to 'follow the throttle'. Set idle speed to keep the engine running, but doesn't try to move the chain. You may have to look closer at your carburetor if the above doesn't help. Go to: http://www.drystacked.com for an excellent article (but poor pix) on Walbro carburetors, but related to most all 2-stroke carburetors. Hope this helps!
Ordertree.com (Poulan authorized parts outlet) http://www.ordertree.com/cms/contact-us/9790.html Telephone - For Handheld or Wheeled Products contact us at 1-877-500-7499
I looked at "Gas Chain Saw PP4218 Types 1 & 2" IPLs. there are no carburetor illustrations. I suggest you contact them by phone. Please have your saw and a supply of common hand tools within easy reach before calling. HTH
There are often multiple carburetor manufacturer's used on the same model. They can easily help you determine what is on your saw.
Try to adjust the air and gas intake pin. It is a screw type dial usually found sticking out the carburetor. You are tuning your carburetor, so you will have to test different adjustments until you get your desired running idle and power. I suggest you start with adjusting the air intake screws to decrease air supply going to the cumbustion chamber, It will probably make the chainsaw run when you give it a throttle.