It looks almost identical but just cant get it to fit :-/ (Engine)

[humanbeing]

[QJ157FMI-2] http://www.genericmotor.dk/login/Wor...vicemanual.pdf | http://www.genericmotor.dk/login/Worx125SparePart.pdf
[K157FMI] the 200 brother ***wiring is the SAME*** http://pan.baidu.com/s/1sjqfYlZ | http://startright.co.uk/manuals/sinnis/apacheengine.pdf
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I would say use tips from http://www.dansmc.com/mc_repaircourse.htm

Good 'o GS

QJ157FMI-2's pinout can guessed from http://item.taobao.com/item.htm?id=525638824835 & "GY6" DC-CDI
K157FMI & newer Suzi

VDD GND PC+ nil
OUT nil nil nil
PC(-) is joined to GND in somewhere