Dont do that.Go to Wmart and buy the poulan chainsaw,42cc.There only $99 or $109,somthing like that.They are quite powerful and would fly that yak at least decent or better in my opinion.This was one of brillellis first motors.I had one also.I converted it and sold it to a guy in Texas.The 42 would be easier than the 46.The 46 needs an aluminum adaptor mounted to the intake on carb since it had a rubber boot.I think CHIGNS sells a complete conversion kit.If not talk to Ralph at rcigns.