1974 Johnson 135 HP Outboard Motors Service manual, Page 117Get this manual
power and will not do the work it was intended to doSo det rmine the voltage at the pump motor leadsBe sure black ground nd edwhite hot leads connected directly battery3Current draw over 50 mps while tilting indicates excellent input power, but possibly an ineCficient mOlor due to armature alignment or blackened motor brushes or even water corrosion oC motor components 4Current draw over 50 amps while ilting may lso be caused by a
tight pump shaftCheck shaft orque by emov ng pump assembly
Torque should not exceed 10 Inoz and haft should rotate without
" Ught" spots Or oughness
5Check pump stall ressure by inserting essure gage and line assembly into fi ll port of pump housingSee Figure4Pressure hould be 1450 psi minimum