Three year old Redmax BCZ trimmer what kind of compression?

Discussion in 'Mechanic and Repair' started by kubotaorange, Nov 14, 2011.

  1. StihlMechanic

    StihlMechanic LawnSite Bronze Member
    Messages: 1,133

    I like to see no less than 120psi, less than 100 and it goes to the bone pile in most cases. $1000 chop saw is cost effective to r&r a top end but a $400 chain saw is junk to me.
  2. dboyd351

    dboyd351 LawnSite Bronze Member
    Messages: 1,124

    On a chainsaw forum I look at they claim you can clean the cylinder out with muriatic acid if it doesn't have grooves in it. Maybe Dutch, Slapper or Restrorob can verify if this works.
  3. dutch1

    dutch1 LawnSite Silver Member
    from Jayhawk
    Messages: 2,248

    Yea, Dboyd, I've heard the same thing but have never attempted it myself, nor was it something that was ever attempted in the Echo/Shindiawa dealership I spent time in. You've got teardown/reassembly time(labor$$) involved and to me it just doesn't make sense to not go back together with proper parts.

    I won't say that the technique doesn't have any merit, it's just that I don't know anyone who has tried it.
  4. kubotaorange

    kubotaorange LawnSite Member
    Messages: 47

    Piston and cylinder looked good, put the new rings in today. It runs a little better, it's usuable now, but still seems lethargic.

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