Mercury Electric Outboards 222 Thruster Service Manual, Page 45Get this manual
Testing Nose Cone IMPORTANT: Disconnect battery leads from battery before testing1Remove nose cone from motor housing
2Visually inspect motor wires for open cuts, chafing, etcCheck brush leads and terminals to see that th ey are not grounded to (touching) nose cone3 Di sconnect all wires from terminals in nose cone4Test nose cone as outlined in "Nose Cone Test Chart"
NOSE CONE TEST CHART
Tests (Figure 1)
TEST 1: Check for open circuit aConnect VOA Meter between terminals and 2bConnect VOA Meter between terminals and 3TEST abc2: Check for short circuit to ground Connect VOA Meter between terminal and nose cone caseConnect VOA Meter between terminal and nose cone case Connect VOA Meter between terminal and nose cone case