Mercury 30 Service Manual

90-826148R2 MARCH 19972A-0 - ELECTRICAL
Table of Contents
Page
Specifications 2A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Special Tools 2A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stator/Trigger (Electric Models) 2A-2. . . . . . . . . . . . . . .
Starter Motor Components 2A-4. . . . . . . . . . . . . . . . . . .
Electrical Components (S/N-0G380074/
Bel-Manual-9928507/BEL-Elec
9928480 & Below) 2A-6. . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical (S/N-USA-0G380075 Thru 0G589999/
Bel-ManuaL-9928508/BEL-Elec-9928481 Thru
9973099) 2A-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Components
(S/N-USA-0G590000/ BEL-9973100 & Above) 2A-10. .
Theory of Operation 2A-12. . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Component Description 2A-12. . . . . . . . . . . . . . .
Principle of Operation with
Timing Protection Module (TPM) 2A-12. . . . . . . . . . .
Mercury/Mariner 30/40 (2 cyl.) ADI Ignition
System (With Electronic Spark Advance) 2A-13. . . . . . .
Principle Of Operation,
CDM without Timing Protection Module (TPM) 2A-14
Trigger Coil 2A-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stator 2A-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Capacitor Discharge Modules (CDM) 2A-14. . . . . . .
Flywheel 2A-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theory of Operation 2A-15. . . . . . . . . . . . . . . . . . . . . . . . .
Capacitor Charging #1 CDM 2A-15. . . . . . . . . . . . . . .
Capacitor Charging #2 CDM 2A-16. . . . . . . . . . . . . . .
#1 Cylinder Trigger Circuit 2A-17. . . . . . . . . . . . . . . . .
Ignition Coil Circuit 2A-18. . . . . . . . . . . . . . . . . . . . . . .
Stop Circuit 2A-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Test Procedures 2A-21. . . . . . . . . . . . . . . . . . . . . .
Direct Voltage Adapter (DVA) Test
for Stator 2A-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Diagnostic Procedures 2A-22. . . . . . . . . . . . . . . .
Testing Ignition Components 2A-23. . . . . . . . . . . . . . . . . .
Resistance Tests 2A-23. . . . . . . . . . . . . . . . . . . . . . . . .
Timing Protection Module 2A-23. . . . . . . . . . . . . . .
Stator 2A-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trigger (S/N-0G589999 & Below) 2A-23. . . . . . . .
Trigger (S/N-0G590000 & Above) 2A-23. . . . . . . .
Capacitor Discharge Module P/N822779 2A-24.
Ignition Components Removal 2A-27. . . . . . . . . . . . . . . .
Flywheel 2A-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mercury 30 Specifications

General

Horsepower	30 HP
Cylinders	3
Displacement	526 cc
Gear Shift	F-N-R
Fuel Induction System	Electronic Fuel Injection (EFI)
Shaft Length	20 in
Steering	Remote / Tiller