Kohler Command CV18

Kohler Command CV18

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OWNER'S MANUAL

VERTICAL CRANKSHAFT

CV18-CV26, CV620-CV750

COMMAND

Other manuals for Kohler Command CV18

Service Manual92 pages

Questions and Answers:

M
Molly JohnsonAug 20, 2025
Why does my Kohler Engine start but not keep running?
- R
  Richard RossAug 20, 2025
  If your Kohler Engine starts but doesn't keep running, the issue might be a faulty carburetor (replace it) or a faulty cylinder head gasket (replace it). Also, check for misadjusted choke or throttle controls (adjust or repair), a fuel pump malfunction (repair or replace the fuel pump), or an intake system leak (repair the leak). Loose wires intermittently grounding the ignition kill circuit can also cause this issue (secure loose wires and connections). Ensure you are using fresh, quality fuel and that the fuel tank cap vent isn't restricted (clear the vent restriction).
J
Jesus GatesAug 22, 2025
Why does my Kohler Command CV18 Engine use an excessive amount of oil?
- S
  Stephen MontoyaAug 23, 2025
  If your Kohler Engine uses an excessive amount of oil, it could be due to loose or improperly torqued fasteners (tighten them), a blown head gasket or overheating (replace the head gasket), or a broken breather reed (replace it). Other possible causes include a clogged, broken, or inoperative crankcase breather (repair or replace it), an overfilled crankcase (drain excess oil), or using the incorrect oil viscosity or type (use the correct one). Additionally, worn cylinder bore (repair or replace), worn or broken piston rings (repair or replace), or worn valve stems or guides (repair or replace) can contribute to excessive oil consumption.
D
David LawsonAug 26, 2025
Why is my Kohler Command CV18 losing power?
- K
  Kaylee WagnerAug 26, 2025
  If your Kohler Engine loses power, it could be due to a dirty air cleaner element (clean or replace it), overheating (address the issue), or excessive engine load (reduce the load). Other possible causes include a restricted exhaust (clear it), faulty spark plugs (replace them), high crankcase oil level (reduce it), or an incorrect governor setting (adjust it). Furthermore, a low battery (recharge or replace it), low compression (perform a compression test and repair), low crankcase oil level (add oil), or poor fuel quality (replace with fresh fuel) can also be responsible.
F
fsilvaAug 28, 2025
Why does my Kohler Engine start hard?
- J
  Jennifer PachecoAug 28, 2025
  If your Kohler Engine starts hard, it could be due to a clogged fuel line or filter (clear it). Other potential causes include engine overheating (address the issue), a faulty ACR mechanism (repair it), or misadjusted choke or throttle controls (adjust or repair them). Also, check for faulty spark plugs (replace them), a sheared flywheel key (replace it), or a fuel pump malfunction (repair or replace the pump). Additionally, an engaged or faulty interlock switch (check and repair if needed), loose wires grounding the ignition kill circuit (secure them), low compression (perform a test and repair), or poor fuel quality (replace with fresh fuel) can contribute to hard starting, as well as weak spark (address the weak spark issue).
M
Mrs. Rebecca MyersAug 30, 2025
What to do if Kohler Command CV18 Engine will not crank?
- R
  Ryan RamosAug 31, 2025
  If your Kohler Engine will not crank, the battery might be discharged (recharge or replace it). Other possible causes include a faulty electric starter or solenoid (replace them), faulty key or ignition switch (replace them), or an engaged or faulty interlock switch (check and repair if needed). Additionally, loose wires grounding the ignition kill circuit (secure them), pawls not engaging in the drive cup (repair or replace pawls), or seized internal engine components (repair them) can prevent the engine from cranking.
J
Jennifer Page DVMSep 2, 2025
What causes a Kohler Command CV18 Engine to overheat?
- J
  Jesus GrahamSep 2, 2025
  If your Kohler Engine overheats, possible causes include a broken cooling fan (repair or replace it), excessive engine load (reduce it), or a failed or off fan belt (replace or adjust it). A faulty carburetor (replace it), high or low crankcase oil level (adjust to correct level), or a lean fuel mixture (adjust the fuel mixture) can also cause overheating. Other potential issues are low cooling system fluid level (refill it), clogged radiator or cooling system components (clean or repair), a failed or broken water pump belt (replace it), or a malfunctioning water pump (repair or replace it).
K
Kathryn MaciasSep 5, 2025
What causes a Kohler Engine to run but miss?
- R
  Ricardo AdkinsSep 5, 2025
  If your Kohler Engine runs but misses, the carburetor might be adjusted incorrectly (correct the adjustment). Other potential causes include engine overheating (address the issue), faulty spark plugs (replace them), or faulty or improperly gapped ignition modules (fix or replace them). Additionally, check for an incorrect crankshaft position sensor air gap (adjust it), an engaged or faulty interlock switch (check and repair if needed), loose wires grounding the ignition kill circuit (secure them), or poor fuel quality (replace with fresh fuel). Also, ensure spark plug leads are connected and tight.
A
Andrea BallSep 8, 2025
What causes a Kohler Command CV18 to knock?
- M
  Mr. David Stephens Jr.Sep 8, 2025
  If your Kohler Engine knocks, it may be due to excessive engine load (reduce it), a hydraulic lifter malfunction (repair or replace it), or using the incorrect oil viscosity or type (use the correct one). Internal wear or damage (repair or replace worn components), low crankcase oil level (add oil to the correct level), or poor fuel quality (replace with fresh, quality fuel) can also cause knocking.
R
robert62Sep 12, 2025
Why won't my Kohler Command CV18 Engine idle?
- R
  Rachel KochSep 12, 2025
  If your Kohler Engine will not idle, it could be due to engine overheating (address the issue) or faulty spark plugs (replace them). Other possible causes include improperly set idle fuel adjusting needles (adjust them) or idle speed adjusting screw (adjust it). Also, check for inadequate fuel supply (ensure adequate supply), low compression (perform a test and repair), poor fuel quality (replace with fresh fuel), or a restricted fuel tank cap vent (clear the restriction).
G
georgedavidSep 13, 2025
Why is my Kohler Engine leaking oil from oil seals and gaskets?
- S
  spearstonySep 13, 2025
  If oil leaks from the oil seals and gaskets of your Kohler Engine, it could be due to a broken breather reed (replace it) or a clogged, broken, or inoperative crankcase breather (repair or replace it). Other potential causes include loose or improperly torqued fasteners (tighten them), piston blow by or leaky valves (repair or replace leaky valve parts), or a restricted exhaust (clear the exhaust restriction).

Kohler Command CV18 Specifications

General

Brand	Kohler
Model	Command CV18
Category	Engine
Language	English

Summary

Safety Precautions

Explosive Fuel Hazards

Details on safe gasoline handling to prevent fires and burns.

Rotating Parts Hazards

Precautions to avoid injury from moving engine parts.

Hot Parts Hazards

Warning about touching hot engine components to prevent burns.

Electrical Shock Hazards

Advice to prevent injury from electrical components and wiring.

Safety Precautions (Continued)

Accidental Start Hazards

Steps to prevent unintended engine starts during maintenance.

Carbon Monoxide Poisoning Risk

Dangers of exhaust fumes and the need for ventilation.

Battery Explosive Gas Risk

Safety measures for battery charging to prevent explosions.

Maintenance Instructions

Maintenance Schedule

Overview of required maintenance tasks and frequencies.

Cooling System Maintenance

Engine Oil Management

Checking Engine Oil Level

Procedure for verifying the crankcase oil level using the dipstick.

Engine Oil Change Procedure

Step-by-step instructions for draining and refilling engine oil.

Oil Cooler Service

Oil Filter Replacement Guide

Guidelines for selecting and replacing the oil filter.

Oil Filter Replacement Procedure

Installing a New Oil Filter

Detailed instructions for removing and installing a new oil filter.

Air Cleaner Maintenance

Paper Element Service

Procedures for cleaning or replacing the paper air filter element.

Heavy-Duty Air Cleaner Maintenance

Cooling System Maintenance

Air Intake and Cooling Area Cleaning

Importance of cleaning cooling fins and air intake areas for proper operation.

Battery Charging Safety

Battery Charging Precautions

Safety measures during battery charging to prevent explosions.

Carburetor Adjustments

Carburetor Adjustment (CV18-740)

Steps for adjusting low idle speed and fuel mixture on specific models.

Governed Idle System Adjustment

Model CV750 Carburetor Settings

CV750 Low Idle Speed Setting

CV750 Low Idle Fuel Adjustment

Electronic Fuel Injection (EFI) System

EFI System Overview and Operation

EFI System Troubleshooting

EFI Throttle Body Adjustment

Warranty Information

Limited 2-Year Command Engine Warranty

Emission Control Systems Warranty

Warranty Coverage Details

Owners Warranty Responsibilities

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