Question about Garden
Only just starts just about runs, put new plug in but poor spark, cleaned carburetor and tank with air line, filtered fuel still the same just chugs away. Its as though the fuel is not getting through air filter is clean, any advice would be appreciated, John.
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Posted on Jan 02, 2017
If you must choke it for it to run it is lean. Have you attempted a carburetor adjustment? Start with "H" and "L" at 1.5 CCW from lightly seated. Then try this:
Carburetor Adjustment by Madsens.com
CW is leaner; to lean will destroy the saw. If over tightened closed (CW) the adjustment screw faces are easily marred; marred adjustments are difficult to impossible to set properly.
Clean the air filter; adjusting with a dirty filter can cause a run lean condition once cleaned and the saw run.
There are 2 wav (sound - idle & full – not highlighted) files that I find most helpful, I think you will too.
An air leak where the carburetor bolts to the engine or the intake manifold can also cause this. If an adjustment does not or has not fixed this I suggest you try your friendly neighborhood Stihl shop. Explain everything you have done to a mechanic there. Good saw shops pressure test the crankcase, fuel lines, and intakes. They have test equipment homeowners do not. Explain what you have already done and ask for a repair estimate. I think you will be pleasantly surprised. Not all small engine mechanics are created equal... why I recommend Stihl. The odds of finding a good mechanic at a certified Stihl shop are in your favor. If not already using 50:1 fuel mix, please ask the Stihl shop what they recommend. Echo on their site has a statement equivalent to "regardless of what your manual says use 50:1". HTH
Posted on Jan 03, 2010
Testimonial: "Thanks for the advice. I dont see any adjustment screws for high or low on this carb. Its on a ppf 210- Echo power pruner"
Cleaning the exhaust: on the saws I've worked with it was just to loosen two bolts at the front and then the exhaust is off the saw. Clean with brake cleaning fluid and blow with compressed air, let it dry before assembling. Don't forget to clean the fine mesh at the output side underneath the lid if present (i.e the spark arrestor).
Make sure to have your carb adjusted properly afterwards.
Posted on May 24, 2009
SOURCE: Have a McCulloch 3818 chainsaw.
Had this problem with my saw (3818) there are two adjustment screws on the side of the carb there is a hole in the plastic to get to them just fwd of the choke slide, not the idle adjustment which is farther fwd of the other. take a 1/8" flat head screwdriver, get the saw running and turn them ever so slightly till you can get a good idle, they only have a 1/2 turn of adjustment each, it doesnt take much
Posted on Jan 14, 2010
I think your on the right track
Blowing compressed air through your tank vent
is great but it is way more air than the natural asperation
that the saw pulls on it own
I would replace the vent cap and also look for a pinched fuel line between the fuel tank and the carb
Posted on Apr 07, 2010
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