Problem 11 - Engine Starts Hard And Runs Rough / Lacks Power; Runs Rough / Lacks Power - Guardian 5240 Diagnostic Repair Manual

SECTION 4.3
TROUBLESHOOTING FLOW CHARTS

Problem 11 - Engine Starts Hard and Runs Rough / Lacks Power

TEST 51 - CHECK
FUEL SUPPLY GOOD
AND PRESSURE
BAD
FIND AND CORRECT
CAUSE OF NO FUEL
OR LOW PRESSURE
TEST 55 - CHECK
BAD
TEST 59 - CHECK
AND ADJUST
IGNITION MAGNETOS
BAD
ADJUST OR
REPLACE
TEST 63 - CHECK
FUEL REGULATOR
GOOD
BAD
REPAIR OR
CHECK
REPLACE
FLYWHEEL
KEY TEST 59
Page 98
IF RECONFIGURED TO LP GAS,
VERIFY THAT PROPER
PROCEDURE WAS FOLLOWED.
(REFER TO SECTION 1.3)
TEST 54 - CHECK
CHOKE SOLENOID
REPLACE CHOKE SOLENOID
GOOD
FOR IGNITION
SPARK
BAD
READJUST
GOOD
GOOD
SINGLE CYLINDER UNITS
V-TWIN UNITS
BAD
TEST 56 - CHECK
SPARK PLUGS
BAD
CLEAN, REGAP
OR REPLACE
TEST 12 - CHECK
AND ADJUST
SINGLE CYLINDER UNITS
ENGINE
GOVERNOR
GOOD
TEST 57 - CHECK
ENGINE
COMPRESSION
BAD
REFER TO ENGINE
SERVICE MANUAL
PART 4
DC CONTROL
CHECK AIR FILTER -
REPLACE AS NEEDED
READJUST
BAD
TEST 62 - CHECK
AND ADJUST
GOOD
VALVES
GOOD
TEST 12A - CHECK
STEPPER MOTOR
V-TWIN UNITS
CONTROL
BAD
REPAIR OR
REPLACE
GOOD