When Troubles Occur, Be Sure To Check The Simple; Section 3. Troubleshooting - Kohler Courage SV470 Service Manual

Troubleshooting Guide

When troubles occur, be sure to check the simple

causes which, at first, may seem too obvious to be
considered. For example, a starting problem could be
caused by an empty fuel tank.
Some common types of engine troubles are listed
below. Use these to help locate the possible cause(s).
Engine Cranks But Will Not Start
1. Empty fuel tank.
2. Fuel shut-off valve closed.
3. Poor fuel, dirt or water in the fuel system.
4. Clogged fuel line.
5. Spark plug lead disconnected.
6. Kill switch in off position.
7. Faulty spark plug.
8. Faulty ignition module.
9. Fuel solenoid malfunction.
10. Choke not closing.
11. Battery connected backwards.
12. Safety interlock system engaged.
Engine Starts But Does Not Keep Running
1. Restricted fuel tank cap vent.
2. Poor fuel, dirt or water in the fuel system.
3. Faulty or misadjusted choke or throttle controls.
4. Loose wires or connections that short the kill
terminal of ignition module to ground.
5. Faulty cylinder head gasket.
6. Faulty carburetor.
7. Intake system leak.
Engine Starts Hard
1. PTO drive is engaged.
2. Poor fuel, dirt or water in the fuel system.
3. Clogged fuel line.
4. Loose or faulty wires or connections.
5. Faulty or misadjusted choke or throttle controls.
6. Faulty spark plug.
7. Low compression.
8. Faulty ACR mechanism.
9. Weak spark.
10. Fuel pump malfunction causing lack of fuel.
Section 3
Troubleshooting
11. Engine overheated-cooling/air circulation
12. Flywheel key sheared.
13. Intake system leak.
Engine Will Not Crank
1. PTO drive is engaged.
2. Battery is discharged.
3. Safety interlock switch is engaged.
4. Loose or faulty wires or connections.
5. Faulty key switch or ignition switch.
6. Faulty electric starter.
7. Seized internal engine components.
Engine Runs But Misses
1. Dirt or water in the fuel system.
2. Spark plug faulty or fouled.
3. Poor quality of fuel.
4. Spark plug lead boot loose on plug.
5. Loose wires or connections that intermittently
6. Engine overheated.
7. Faulty ignition module or improperly gapped.
8. Carburetor adjusted incorrectly.
Engine Will Not Idle
1. Dirt or water in the fuel system.
2. Stale fuel and/or gum in carburetor.
3. Faulty spark plug.
4. Fuel supply inadequate.
5. Idle fuel adjusting needle improperly set.
6. Idle speed adjusting screw improperly set.
7. Low compression.
8. Restricted fuel tank cap vent.
9. Engine overheated-cooling system/air circulation
Troubleshooting
restricted.
short the kill terminal of ignition module to
ground.
problem.
Section 3
3
3.1