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  1. Magnus

    Rough starting saw

    Plug wet no spark. Dry plug, no fuel with few exceptions.
  2. Magnus

    Rough starting saw

    Easy misstake to make. I dodn't look and compared pistons before I put them in either. I do now though...
  3. Magnus

    Rough starting saw

    I had a 346 I must have spent 40 hrs on. This i had for 3 months I think. This was another company that got it in for service, changed piston and saw did not run. Turns out it was wrong piston they put in....
  4. Magnus

    Rough starting saw

    There are alway's a couple saws that need time to correct attitude here... I have a 357 here on shelf that has issues and it was so annoying it is now on shelf for a bit. If not I fear I would kill it.
  5. Magnus

    Rough starting saw

    There are times it is very hard to find the problem. Running them in wood is not always a sure thing to provoke out a issue. I had saws here I ran 4-5 tanks thru without any issue. It is a guessing game sometimes, rare occasions but still.... If I work on a saw I want to get paid for the time I...
  6. Magnus

    Rough starting saw

    Sometimes filter in carb is blocked as well if pick up is clogged. There is mostly more than one problem and some ripple effect issues... Filter hose and membranes is something that I usually don't look at, just replace when I get it up on bench. Once that is pulled down and carb cleaned...
  7. Magnus

    Rough starting saw

    It is not standard across brands, it is invidual to models, but there are filters that work generally in many models. Weight, size, flow, connections has to be close enough or the same.
  8. Magnus

    Rough starting saw

    It usually mean fuel can't get to it. Clogged filter, bad hose or faulty primer bulb. If that is clean as new pump is not working. usually due to a part of membrane that act as valve is not shut so pressure can't be built up. A no longer tight main inlet valve can cause this too...
  9. Magnus

    Rough starting saw

    I try to remember the KISS rule. Keep It Simple Stupid It is usually not that complicated.
  10. Magnus

    Rough starting saw

    If it is hard to pull over: Get the plug out and see if there is scoring on cylinder walls, carbon build up or something else disturbing. Put a new CORRECT plug in and see if it helps. If it bogs down when accelerating it needs more fuel on low circuit. If it goes up in rpm without hesitation...
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