very powerful, strong pulling motor
well pleased with mine for the first 8 hours of use
..............then the piston almost melted on the exhaust side taking off the edge and leaving a hole in the top
contacted GIZMO motors whom i bought the engine from
very helpful ......told me i had probably got dirt in thru' filter and there was no warranty, even tho' the website says "we stand 100% by what we sell" .........eventually they offered me a replacement head and piston for the princely sum of $173 plus shipping !!
not impressed