here's a review of the 180cc model: http://www.rcuniverse.com/forum/m_4220535/tm.htm

here's the operating manual (Virabrequim means crankshaft, btw) : http://www.lem.com.br/manual-Motores-Kroma-usa.htm

here's a page in portugues w/ links to engine page (click on "Motores" on left hand side menu): http://www.lem.com.br