Originally Posted by
moss point mark
all ut 106 are 33 cc the 105 and 104 are 31 , if you cut the crank you will have engine look up probly in mid air and all the work you have done will be wasted, if you cut crank it will unbalance the crank and it WILL burn the seal and will create an air leak wich WILL blow the engine, find a litle 35cc tiller engine will probly be best . good luck and have fun ...
Sorry but I don't understand and don't agree. I have cut many cranks with no problems. Unless the magneto is used to help balance the engine, which is
very rare, and you cut that shaft off and leave the magneto off, there should be no problem. Sometimes I cut the crank just outside the seal and leave the seal in place, sometimes I cut the crank just past the bearing and make a plug for where the seal would go. Of course you do need to disassemble the engine and then cut the crank....
AV8TOR