1998 Johnson Evinrude "EC" Accessories Service Manual, P/N 520213, Page 163Get this manual
Routine Maintenance
1Check reservoir fluid level at least once per season or every 50 operating hoursSystem capacity is approximately 37.2 floz(1100 cc) Engine temperature must be cold Engine must be in vertical position Do not thread dipstick into hole when checking level Add OIVIC Power TrimlTilt and Power Steering Fluid or GM Dexron "fluid, as necessary, to bring level up to full mark on dipstick
2Check belt tension and condition at least once per season or every 50 operating hours Replace the belt every 500 operating hours Refer to Belt Tension Procedure, this section3Check the condition of all hydraulic hoses on regular basisInspect for: Wear and fatigue Loose fittings and leaks Chafing