1998 Johnson Evinrude "EC" 40 thru 55 2-Cylinder Service Manual, P/N 520206, Page 10Get this manual
Introduction This manual covers service information on 45 cuin (737 cmmodelsSome of the information might apply to previous modelsUse this manual together with the proper Parts Catalog for part numbers and exploded views which are valuable aid to serviceThis manual presents the English values and dimensions first and the metric values and dimensions second, inside parentheses OGood Service Practice
Service required for OMC engines is generally one of three kinds:
Normal care and maintenancewhich includes putting new engine into operation, storing engines, lubrication, and care under special operating conditions such as salt water and cold weatherThis includes engine servicing procedures to keep the engine in prime operating condition Operating malfunctionsdue to improper engine mounting, propeller condition or size, boat condition, or the malfunction of some part of the engine Complete disassembly and overhaulsuch as major service or rebuilding unit