1970 Johnson 115 HP Outboard Motor Service manual, Page 63Get this manual
Willi easy planing boats, it would be desirable to bring the boat into planing position with full power and then immediately reduce the Ulrottle setting to approximately 3000 rpm (one-half throttle)BE SURE boat maintains planing attitude at this throttle settingDuring second hour, bring boat into planing attitude and reduce power to 4000 rpm (appr oximate) or three-quarters throttle (approxima te), wh ile maintaining planing attitudeAt intervals during the second hour, apply full power for periods of one to two minutes, returning throttle to original setting (4000 rpmthree-quarte rs throttle) for cooling periodAvoid continuous full throttle operation for extended period during the next few hours