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Page 120
GOOD
BAD
GOOD
GOOD
GOOD
READJUST
REFER TO ENGINE
SERVICE MANUAL
REPAIR OR
REPLACE
ADJUST OR
REPLACE
CLEAN, REGAP
OR REPLACE
FIND AND CORRECT
CAUSE OF NO FUEL
OR LOW PRESSURE
READJUST
TEST 78 – CHECK
FUEL REGULATOR
GOOD
GOOD
GOOD
GOOD
BAD
BAD
BAD
BAD
BAD
BAD
BAD
Problem 18 – Engine Starts Hard and Runs Rough / Lacks Power / Backfires
CHECK
FLYWHEEL
KEY
BAD
REPLACE CHOKE SOLENOID
SINGLE CYLINDER UNITS
V-TWIN UNITS
TEST 66 – CHECK
FUEL SUPPLY AND
PRESSURE
IF RECONFIGURED TO LP GAS,
VERIFY THAT PROPER
PROCEDURE WAS FOLLOWED.
(REFER TO SECTION 1.3)
TEST 70 –
CHECK FOR
IGNITION SPARK
TEST 74 – CHECK
IGNITION MAGNETOS
TEST 77 –
CHECK AND
ADJUST VALVES
TEST 71 –
CHECK SPARK
PLUGS
TEST 72 – CHECK
ENGINE
COMPRESSION
TEST 69 – CHECK
CHOKE SOLENOID
CHECK AIR FILTER -
REPLACE AS NEEDED
GOOD
BAD
REPAIR OR
REPLACE
TEST 16 – CHECK
STEPPER MOTOR
CONTROL
TEST 15 - CHECK
AND ADJUST
ENGINE
GOVERNOR
PART 4
DC CONTROL
SECTION 4.3
TROUBLESHOOTING FLOW CHARTS