1975 Evinrude 2HP Model 2502 Full Factory Service Manual, Page 14Get this manual
2-7 BREAK-IN
The 50:1 mixture is used during bre ak-inor othe BIA ce rtifi ed TC-W lubricants Use only our 50 :1 lubricant
OPERATION (FI RST HOUR): Do not oper ate engine at continuous full powe fo the first hour of operationAfte 15 minures of slow to half
th rottle ope ration, we recommend sho rt burst of full throttle ope ration every to 10 minutesRun at full throttle fo about 90 econdsth en return to half throttle ess