Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-42794--1, Page 274Get this manual
Thermal Overload Switch Test IMPORTANT: If thermal overload switch has been activated, pump motor cannot be tested for minimum of one minuteAfter this period switch should close (reset itself) and pump motor may be operatedPerform the following check(s) only if switch does not reset itselfMOTOR ASSEMBLED
Connect Ohmmeter (Rx1 scale) leads as shownIf switch is good, full continuity (zero ohms) will be indicatedIf full continuity is not indicated, disassemble motor and recheck switch per instructions, following
If full continuity is not indicated, clean switch contact surfaces, using an ignition point fileRecheck switchif full continuity is not indicatedreplace end frame
Armature Tests
TEST for SHORTS
Check armature on Growler (follow Growler manufacturer's test instructions) Indication of short requires replacement of armature