1978 Johnson 4HP outboards Service Manual, Page 7Get this manual
OMC has specially-designed tools to simplify some of the disassembly and reassembly operationsThese tools are illustrated in this Service Manual, in many cases in actual useRefer to the Special Service Tool Catalog for description and ordering instructions for these toolsIndividual purchasers of Service Manuals must order Special Tools through an authorized dealerOMC special tools used for this motor areSPECIAL TOOL Fixed Jet Screwdriver Universal Puller Coil Locating Ring Crimping Pliers Insert Tool Pin Remover Socket Remover Power Head Holding Fixture Seal Remover nstruments needed areSpark Tester Neon Ignition Tester Ignition Analyzer Voltmeter C.DVoltmeter Ohmmeter Ammeter PART NUMBER 317002 378103 317001 322696 322697 322698 322699 303605 377565
board motorTherefore, the sides are referred to as STARBOARD or PORT sides STARBOARD means on the right hand while facing the bow (FRONT) of the boat; PORT means left hand See Fi gures 1-1 and 1-2
Service required for outboard motors is generally one of three kinds 1NORMAL CARE AND MAINTENACE, which includes putting new motor into operationstoring motor, lubricationand care under special operating conditions such as salt water and cold weather2OPERATING MALFUNCTIONS due to improper motor mounting, propeller condition or size, boat condition, or the malfunction of some part of the motorThis includes motor tune-up procedures to keep the motor in prime operati ng condition 3COMPLETE DISASSEMBLY and overhaulsuch as inspecting motor that has been submerged, or rebuilding trade-in unitsIt is important to you as the service man to determine before disassembly just what the trouble is, and how to correct it quickly and with minimum expense to the ownerThis section of the manual is designed to help you diagnose motor malfunctions and correct them