Generac Power Systems 16 kW NG User Manual

Page 120

GOOD

BAD

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

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