... 5. High economic performance ModelHH168Engine typeAir cooled, 4 stroke, OHV single cylinderBore×Stroke68mm×45mmDisplacement163ccCompression ratio8.5:1Max ... 8N.m/2500rpmIgnition systemNon-contact transistorized ignition (TCI)Start modeRecoil start/Electric startAir cleanerSemi dry, oil bath, dual, ... duty control box, and easily accessible spark plug.4. Easy, reliable starting every time with heavy duty ...