From inside (document excerpt):
2004 Operator’s Guide 40/50 HORSEPOWER PL Our First Words to the Owner/Operator This Operator’s Guide is an essential part of your Johnson outboard. It contains pertinent information which, if followed, will provide you with a thorough understanding needed for proper operation, maintenance, care and above all safety! The safety section of this Guide comes first because it is our first priority and it should be yours too.
Boat Motor Manual Free Download. Marine Operator’s Engine Parts Boating Guide. Free Motor Instruction and Manual Download PDF. Years covered by this manual: 2004.
It is strongly recommended that you read this Guide from front cover to rear cover.