i have a sears 150. model 64150. ive been investigating forums and i think its a 1964 15ft runabout. it has a chrysler sea king outboard 45hp electric start. other than that i cannot find a model# on the motor...and i need it...can anyone help. Ive been running a 50:1 fuel mix, and champion rj12c spark plugs @ .35. i think im in the safe zone with that combo. the motor runs great, starts with a flick of the key and purrs quietly. i also need to order shear pins for the prop, the original is brass i just have no clue what size. stupid submersed log. i also need to find the lower gear lube fill plug,i had to make one, its not going to last. and i need a vent plug i had to swipe one off my other motor, any info on where to find those?