Generac Power Systems 4451 & 4986 - Problem 6 - Engine Will Not Crank

Section 5
TROUBLESHOOTING FLOWCHARTS
Page 30
TEST 4 -
PERFORM FIXED
EXCITATION /
ROTOR AMP
DRAW
TEST 9 - TEST
STATOR DPE
WINDING
CHECK VOLTMETER
FUSES - VERIFY AMP
METER FUNCTIONS
INSULATION
RESISTANCE
TEST PAGE 14
INSULATION
RESISTANCE
TEST PAGE 13
TEST 14 -
CHECK ROTOR
ASSEMBLY
REPAIR
OR
REPLACE
REPAIR
OR
REPLACE
BAD
GOOD
BAD
BAD
BAD
REPLACE FUSES
- THEN RETEST
Problem 2 - Generator Produces Zero Voltage or Residual Voltage (2-12 VAC)
(continued)
G
E
F
TEST 15 -
CHECK LOAD
VOLTAGE &
FREQUENCY
TEST 16 - CHECK
LOAD WATTS &
AMPERAGE
TEST 2 - CHECK /
STEPPER MOTOR
CONTROL
GO TO PROBLEM 8
REDUCE LOAD
END TEST
GOOD
GOOD
BAD
OVERLOADED
NOT OVERLOADED
Problem 3 - Excessive Voltage/Frequency Droop When Load is Applied