1998 Johnson Evinrude "EC" Accessories Service Manual, P/N 520213, Page 90Get this manual
4As you interpret your test results, there are three basic possibilities:
1Low current drawCheck for:
Valves leaking Relief valve springs weak Pump damaged O-rings leaking Check valves fouled or damaged Manual release valve damaged
2High current drawCheck for:
Pump binding Motor binding Valves sticking Relief valve springs damaged (stall up only)