1976 Evinrude 4 HP Service Repair Manual Models P/N 506721, Page 13Get this manual
Quality of the image is intentionally reduced!
TROUBLE TROULE
CARBURETORSee Section Poor [ltoomuch lubricant Carburetor adjustments(too leanbackfires) (too richexcessive {l) Choke not operating prQperly Air leaks at packing nuts or core plug