You best bet is the get ahold of Keith at BME or Kris Welter in NC.
Both should be able to give you answers to your question
ORIGINAL: tim220225
Does anyone have any pictures or a link to a BME 100? I am trying to figure out what Echo engine the cylinders came off of. I want to put big bore cylinders on my 61cc twin Echo. I was told the cranks were the same.