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Gas/oil ratio for old Echo trimmer and Mantis tiller...

Discussion in 'Mechanic and Repair' started by mkwl, Nov 15, 2006.

  1. mkwl

    mkwl LawnSite Bronze Member
    Messages: 1,700

    I have acquired an old (like 70's or 80's) Echo SRM 200 BE string trimmer, and a Mantis (90's?) mini tiller. What is the correct mix ratio for each one of these models? I don't want to cook the engines if the ratio isn't 50:1 (what the ret of my 2 cycle equip runs on).

  2. khouse

    khouse LawnSite Bronze Member
    Messages: 1,465

    I only run Amsoil 80 to 1 ratio in every two stroke I own. I don't want you guys to bash me but I believe it's the best. I have been using it since about 1977. I also run Amsoil in my Honda Pilot and Kohler engines. I think 50 to 1 mineral oil mix would be fine in those two units.
  3. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    I'm not sure on the ratio Matt, But I have been using this; http://www.tanaka-usa.com/index.php?section=154 for over 15 yrs. without any problems at all. With the stabilizer already added some of my equipment has sat in my shop over 10 mos. and cranks 2nd or 3rd pull.

    This stuff is great for people that have multi ratio equipment, They are reduced to one fuel can for ALL air cooled 2 cycles.
  4. KLM service

    KLM service LawnSite Member
    Messages: 5

    Matt, I have a SRM210 purchased in the early/mid 80's and the ratio is 50 / 1.
  5. Godfather

    Godfather LawnSite Member
    Messages: 186

    all echo equiptment runs 50:1 even if the manual from the 70s says 20:1. I called the echo technical support about an old chainsaw i had.

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