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Kohler Courage SV590 - Service Manual

Kohler Courage SV590
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1
20 690 01 Rev. F KohlerEngines.com
SV470-SV620
Service Manual
2 Safety
3 Maintenance
5 Specifi cations
13 Tools and Aids
16 Troubleshooting
20 Air Cleaner/Intake
21 Fuel System
31 Governor System
33 Lubrication System
35 Electrical System
44 Starter System
47 Emission Compliant Systems
50 Disassembly/Inspection and Service
63 Reassembly
IMPORTANT: Read all safety precautions and instructions carefully before operating equipment. Refer to operating
instruction of equipment that this engine powers.
Ensure engine is stopped and level before performing any maintenance or service.

Table of Contents

Other manuals for Kohler Courage SV590

Preview: Owner's Manual
Owner's Manual16 pages

Questions and Answers

  • S
    Shaun FrostAug 19, 2025
    What to do if Kohler Courage SV590 loses power?
    • M
      Megan MillerAug 19, 2025
      If your Kohler engine is losing power, consider these potential causes: a dirty air cleaner element, engine overheating, excessive engine load, a restricted exhaust, faulty spark plugs, high crankcase oil level, incorrect governor setting, a low battery, low compression, low crankcase oil level, or poor fuel quality. Solutions include cleaning or replacing the air cleaner element, allowing the engine to cool, reducing the engine load, clearing the restricted exhaust, inspecting and replacing faulty spark plugs, checking and reducing high crankcase oil level, adjusting the governor setting, charging or replacing the battery, inspecting for causes of low compression, checking and refilling crankcase oil to proper level, and using clean and fresh fuel.
  • L
    Larry HolmesAug 22, 2025
    What to do if Kohler Courage SV590 Engine starts but does not keep running?
    • T
      thomas24Aug 22, 2025
      If your Kohler engine starts but doesn't keep running, the issue might stem from a faulty carburetor, a faulty cylinder head gasket, or faulty or misadjusted choke or throttle controls. Other possible causes include a fuel pump malfunction (vacuum hose clogged or leaking), an intake system leak, loose wires or connections that intermittently ground the ignition kill circuit, poor fuel quality, or a restricted fuel tank cap vent. Inspect and repair or replace the faulty carburetor. Inspect and replace the faulty cylinder head gasket. Adjust or replace faulty choke or throttle controls. Check and repair fuel pump and hoses. Inspect and repair intake system leaks. Check and secure loose wires or connections. Use clean and fresh fuel. Clear the restricted vent.
  • M
    Michael AllisonAug 25, 2025
    What to do if Kohler Courage SV590 Engine will not crank?
    • J
      Jenny HudsonAug 26, 2025
      If your Kohler engine won't crank, it could be due to a discharged battery, a faulty electric starter or solenoid, a faulty key switch or ignition switch, an engaged or faulty interlock switch, loose wires or connections grounding the ignition kill circuit, pawls not engaging in the drive cup, or seized internal engine components. Charge or replace the battery. Inspect and replace the faulty starter or solenoid. Inspect and replace the faulty key or ignition switch. Inspect and repair the interlock switch. Check and secure loose wires or connections. Inspect and repair pawls. Inspect internal engine components for seizure.
  • S
    samanthachenSep 2, 2025
    How to stop Kohler Courage SV590 using excessive amount of oil?
    • B
      Brittany MayoSep 2, 2025
      If your Kohler engine uses an excessive amount of oil, it could be due to loose or improperly torqued fasteners, a blown head gasket or overheating, a broken breather reed, a clogged, broken, or inoperative crankcase breather, an overfilled crankcase, incorrect oil viscosity/type, a worn cylinder bore, worn or broken piston rings, or worn valve stems/valve guides. Check and properly torque fasteners. Inspect and replace blown head gasket. Replace the broken breather reed. Inspect and repair crankcase breather. Drain excess oil from crankcase. Use the correct oil viscosity/type. Inspect and repair or replace worn cylinder bore. Inspect and replace worn or broken piston rings. Inspect and replace worn valve stems/ valve guides.
  • K
    Kathleen CookSep 8, 2025
    How to fix Kohler Courage SV590 Engine that knocks?
    • V
      Vicki Mitchell DDSSep 8, 2025
      If your Kohler engine is knocking, it could be due to excessive engine load, hydraulic lifter malfunction, incorrect oil viscosity/type, internal wear or damage, low crankcase oil level, or poor fuel quality. To address this, reduce the engine load. Inspect and repair hydraulic lifters. Use the correct oil viscosity/type. Inspect for internal wear or damage. Check and refill crankcase oil to proper level. Use clean and fresh fuel.
  • A
    Amanda MoralesSep 10, 2025
    How to resolve Kohler Engine will not idle?
    • M
      Michael MyersSep 10, 2025
      If your Kohler engine won't idle, the problem might be due to the engine being overheated, faulty spark plugs, improperly set idle fuel adjusting needle(s), an improperly set idle speed adjusting screw, an inadequate fuel supply, low compression, poor fuel quality, or a restricted fuel tank cap vent. Allow the engine to cool. Inspect and replace faulty spark plug(s). Adjust idle fuel needle(s). Adjust idle speed adjusting screw. Check and ensure adequate fuel supply. Inspect for causes of low compression. Use clean and fresh fuel. Clear the restricted vent.
  • G
    Gerald ThompsonSep 13, 2025
    How to fix oil leaks from oil seals and gaskets in Kohler Courage SV590 Engine?
    • J
      John SmithSep 13, 2025
      If you're experiencing oil leaks from the oil seals and gaskets in your Kohler engine, it could be due to a broken breather reed, a clogged, broken, or inoperative crankcase breather, loose or improperly torqued fasteners, piston blow by or leaky valves, or a restricted exhaust. Replace the broken breather reed. Inspect and repair crankcase breather. Check and properly torque fasteners. Inspect and replace faulty components causing blow by or leakage. Clear the restricted exhaust.
  • S
    Susan JonesNov 15, 2025
    Why Kohler Courage SV590 cranks but will not start?
    • S
      Sherry WilsonNov 16, 2025
      If your Kohler Engine cranks but fails to start, several factors could be at play. It could be due to the battery being connected backwards, a blown fuse, a malfunctioning carburetor solenoid, or the choke not closing properly. Other potential causes include a clogged fuel line or filter, a failed diode in the wiring harness, a DSAI or DSAM malfunction, an empty fuel tank, a faulty electronic control unit, faulty ignition coils or spark plugs, or a fuel pump malfunction. Also check for a closed fuel shut-off valve, faulty or improperly gapped ignition modules, insufficient voltage to the electronic control unit, an engaged or faulty interlock switch, the key or kill switch being in the OFF position, a low oil level, poor fuel quality, a SMART-SPARKTM malfunction, or disconnected spark plug...
  • P
    paul80Nov 26, 2025
    How to fix Kohler Courage SV590 Engine that starts hard?
    • G
      Gregory StricklandNov 27, 2025
      If your Kohler Engine starts hard, it could be due to a clogged fuel line or fuel filter, the engine being overheated, a faulty ACR mechanism, faulty or misadjusted choke or throttle controls, faulty spark plugs, a sheared flywheel key, a fuel pump malfunction (vacuum hose clogged or leaking), an engaged or faulty interlock switch, loose wires grounding the ignition kill circuit, low compression, poor fuel quality, or a weak spark. Clear or replace the clogged fuel line or filter. Allow the engine to cool down. Inspect and repair the faulty ACR mechanism. Adjust or replace the faulty choke or throttle controls. Inspect and replace faulty spark plugs. Replace the sheared flywheel key. Check and repair fuel pump and hoses. Inspect and repair the interlock switch. Check and secure loose wires...
  • M
    Michael RangelDec 1, 2025
    Why does Kohler Courage SV590 Engine run but misses?
    • F
      fcarrDec 1, 2025
      If your Kohler engine runs but misses, possible causes include an incorrectly adjusted carburetor, the engine being overheated, faulty spark plugs, faulty or improperly gapped ignition modules, an incorrect crankshaft position sensor air gap, an engaged or faulty interlock switch, loose wires grounding the ignition kill circuit, poor fuel quality, disconnected spark plug leads, a loose spark plug lead boot on the plug, or a loose spark plug lead. Adjust the carburetor. Allow engine to cool. Inspect and replace faulty spark plug(s). Check and replace or adjust ignition module(s). Adjust the crankshaft position sensor air gap. Inspect and repair the interlock switch. Check and secure loose wires or connections. Use clean and fresh fuel. Reconnect disconnected spark plug leads. Secure the loo...

Summary

Safety

SAFETY PRECAUTIONS

Key safety warnings and precautions for engine operation and maintenance.

Maintenance

MAINTENANCE SCHEDULE

Recommended service intervals for various engine components.

OIL RECOMMENDATIONS

Specifications

TORQUE SPECIFICATIONS

Recommended torque values for various fasteners and components.

CLEARANCE SPECIFICATIONS

Specific measurements for internal engine part clearances.

Troubleshooting

TROUBLESHOOTING GUIDE

General guidance for diagnosing and resolving engine problems.

Engine Cranks But Will Not Start

Common causes and solutions when the engine does not crank.

Engine Will Not Crank

Potential issues when the engine fails to turn over.

Engine Starts Hard

Troubleshooting steps for engines that are difficult to start.

Engine Runs But Misses

Identifying causes for an engine running unevenly or misfiring.

Engine Overheats

Causes and solutions for engine overheating issues.

Fuel System

FUEL SYSTEM TESTS

Steps for testing the fuel system to diagnose starting issues.

CARBURETOR

Carburetor Adjustments

Guidelines for adjusting carburetor idle speed and fuel mixture.

Governor System

Governor Adjustments

Procedures for initial governor lever adjustment.

Governor Sensitivity Adjustment

Lubrication System

CHECK OIL LEVEL

Procedure to check and maintain the engine oil level.

CHANGE OIL AND FILTER

Steps for performing an oil and filter change.

Electrical System

SPARK PLUGS

Inspection, service, and specifications for spark plugs.

BATTERY

Electronic Ignition System Tests

Procedures for testing the electronic ignition system.

BATTERY CHARGING SYSTEM

BLADE STOP STATOR BRAKE CIRCUIT

Starter System

Troubleshooting-Starting Difficulties

Common starting issues and their potential causes.

INERTIA DRIVE ELECTRIC STARTERS

Disassembly;Inspection and Service

Drain Oil from Crankcase and Remove Oil Filter

Steps for draining oil and removing the oil filter.

Remove External Governor Components, Carburetor, and Fuel Pump

Remove Debris Screen, Fan, and Flywheel

Remove Valve Cover and Cylinder Head

Piston and Rings

Remove Crankshaft and Balance Weight Assembly

Honing

Measuring Piston-to-Bore Clearance

Reassembly

Install Oil Pump Assembly and Intake Cam Shaft

Install Crankshaft and Balance Weight

Install Cylinder Head

Install Rocker Arms and Push Rods

Install Fan and Flywheel

Install Ignition Module

Install Spark Plug

Install and Adjust Governor Lever

Prepare Engine for Operation

Testing Engine

Kohler Courage SV590 Specifications

General IconGeneral
Compression Ratio8.5:1
Power19 hp
Fuel TypeUnleaded gasoline
LubricationFull pressure lubrication with full-flow filter
Starter TypeElectric
Engine Type4-cycle, OHV, single cylinder
Displacement597 cc
Ignition SystemElectronic
Weight32 kg

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