Stihl Edger Help

Discussion in 'Mechanic and Repair' started by morgaj1, May 12, 2012.

  1. dutch1

    dutch1 LawnSite Silver Member
    from Jayhawk
    Posts: 2,231

    Who's on first?
     
  2. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    No.....he's on second.....
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  3. morgaj1

    morgaj1 LawnSite Senior Member
    Posts: 318

    I did not ask anything about the carb.:hammerhead: I have removed the limiters and tuned it with a tach, so I know it's fueling property. My question is why the lack of compression. I have seen many lean 2-stroke failures and the p/c on this edger doesn't look anything like that. As a matter of fact, the p/c look great. I am hoping a new set of rings will wake it up. Just waiting on them to get here.
     
    Last edited: May 15, 2012
  4. donjr5

    donjr5 LawnSite Member
    Posts: 1

    New rings will probably help, while you're at it, replace the crankshaft seals. They are a possible culprit, preventing the engine from developing enough vacuum to draw the proper amount of air/fuel into the crankcase.
     
  5. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Are you sure......I thought he was pitchhitting for today or tomorrow...
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  6. morgaj1

    morgaj1 LawnSite Senior Member
    Posts: 318

    I got the edger apart this weekend and replaced the rings. I also checked the crank seals while I was in there and they were fine. After getting it back together, my edger is reborn! It runs well and has the same power that it used to. I just forgot what a pain a dual ring, 25cc p/c setup is to work with. I also wish that Stihl would run the cylinder bolts from the top, like most chainsaws. That way, you wouldn't have to remove the crankcase from the clutch.

    Oh, I also cracked the plastic intake manifold (Stihl calls it a flange, I believe) when I was reassembling it. :cry: I put some silicone on it for now and will stop by the dealer tomorrow for a new one. But, for about $15 and some sweat equity, I got it going. :cool2:
     
  7. lonestarniner

    lonestarniner LawnSite Member
    Posts: 13

    I can not get my FC75 started, I changed the spark plug, air filers and poured fresh True Fuel in it. I will not start, I removed the spark plug wire and I see it's getting a spark but will not crank. Also, I cleaned the spark arrestor screen.What else should I try?
     
  8. GlynnC

    GlynnC LawnSite Senior Member
    Posts: 798

    Is the spark arrestor screen still in? Is it clogged? If an engine cannot get rid of it's exhaust, it acts very, very tired!!!!
     
  9. GlynnC

    GlynnC LawnSite Senior Member
    Posts: 798

    Oopss, sorry, I should have read all of your 1st post--my bad!!!!:dizzy:
     

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