1997 Johnson Evinrude "EU" Accessories Service Manual, P/N 507270, Page 91Get 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 bind ing Motor binding Valves sticking Relief valve springs damaged (stall up only)