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Echo PE 200 & SRM 210 Low Compression

Discussion in 'Mechanic and Repair' started by Oli, Apr 13, 2014.

  1. lawnboy dan

    lawnboy dan LawnSite Gold Member
    Messages: 3,711

    hears some tips for getting more life from near worn out 2 cycles. buy and install a e3 spark plug. run the gas /oil mix at 32/ 1 vs 50/1. more oil in mix makes better compression.
  2. craftsmanracer

    craftsmanracer LawnSite Member
    Messages: 79

    Putting new rings in a handheld is crazy easy guys, these motors only have 3or4 moving parts in the crankcase, rebuilding can be done in an hour. Unless you have a 4-mix, which isnt that much harder.

    Most of the time all you need is a base gasket for when you separate the cylinder from the crankcase. That is if you don't re-use it (halfassed, but works most of the time.)
  3. The Don'z

    The Don'z LawnSite Member
    Messages: 114

    Reading most the other posts,, I believe I'm in the right place,, I have an old srm-210 echo, It's run like a champ for years but today the trimmer head stopped moving even at full throttle. is this a clutch problem? If it is,, I can do R & R (remove and replace) but I'm no mechanic..
  4. Breezmeister

    Breezmeister LawnSite Bronze Member
    Male, from South Jersey
    Messages: 1,739

    It could be, was it making any out of the ordinary noise ? You need to see if the clutch shoes are frozen....A gear head could have gone bad, rare, but it does happen, drive shaft could be shot, clutch cup could be stripped...You need investigate.
  5. The Don'z

    The Don'z LawnSite Member
    Messages: 114

    Will start disassembly tomorrow morning, no strange noises, just stopped turning.
  6. dboyd351

    dboyd351 LawnSite Bronze Member
    Messages: 1,124

    Hopefully it is as simple as the drive shaft having slipped out of the clutch drum assembly.
    Or you could try some 32 to 1 mix in it.
  7. The Don'z

    The Don'z LawnSite Member
    Messages: 114

    I've known that the clutch was on its way out for a while, just hoping it's not anything more serious. And why would I use 32:1 in an engine that takes 50:1?
  8. craftsmanracer

    craftsmanracer LawnSite Member
    Messages: 79

    In theory with the thicker gas/oil mixture, there would be more oil collecting on the piston rings, leading to higher compression.
  9. The Don'z

    The Don'z LawnSite Member
    Messages: 114

    Good and bad news on my echo srm 210, wasn't the clutch but that does need to be replaced, just can't afford it right now, but the flex shaft and inner liner were both broken, replacement parts ran me about $60.00 so looks like i got away cheap this time. thanks to everyone for their input on this.

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