Tecumseh V-twin - Page 4

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Page
Speed Controls and Linkage ...................................................................................4-3
Synchronizing the Carburetors ................................................................................4-4
Choke Synchronization............................................................................................4-5
ELECTRICAL SYSTEMS
General Information.................................................................................................5-1
Operation.................................................................................................................5-1
Converting Alternating Current to Direct Current.....................................................5-2
Components
Battery ............................................................................................................5-2
Wiring..............................................................................................................5-2
Condition.........................................................................................................5-2
Wire Gauge.....................................................................................................5-2
Electrical Terms .......................................................................................................5-3
Basic Checks...........................................................................................................5-3
Charging Circuit.......................................................................................................5-4
3 Amp D.C. 5 Amp A.C. Alternator .........................................................................5-4
Diode Replacement ........................................................................................5-4
Checking the System......................................................................................5-5
16 Amp Alternator System with External Regulator.................................................5-5
Troubleshooting Electrical Charging Circuit Flow Chart ..........................................5-6
Voltage Regulators ..................................................................................................5-7
Fuel Shut-Down Solenoids ......................................................................................5-7
Low Oil Pressure Sensor Testing.............................................................................5-7
Starting Circuit .........................................................................................................5-8
Testing Procedure Starting Circuit ..................................................................5-8
Troubleshooting Electrical Starter Circuit Flow Chart .....................................5-9
Electric Starter Service ..........................................................................................5-10
12 Volt Electric Starter ..................................................................................5-10
Inspection and Repair...................................................................................5-11
Brush Holder.................................................................................................5-12
Brush Replacement ......................................................................................5-12
IGNITION
General Information.................................................................................................6-1
Operation
Solid State Ignition System (CDI) ............................................................................6-1
Components ....................................................................................................6-1
Testing Procedure............................................................................................6-2
Service
Spark Plug Service ..........................................................................................6-3
Conditions Causing Frequent Spark Plug Fouling...........................................6-3
Ignition Timing .........................................................................................................6-3
Service Tips.............................................................................................................6-4
TABLE OF CONTENTS (continued)