Restore reliable starting and power to your Kohler CV491/27509 engine with genuine OEM replacement parts from Repair Clinic. The CV491/27509 is a 491 cc V-twin OHV four-stroke engine from Kohler’s CV series, commonly installed in riding lawn tractors and zero-turn mowers. The /27509 specification number identifies the carburetor configuration within the CV491 series and must be confirmed before ordering a replacement carburetor. Repair Clinic stocks genuine Kohler OEM parts for the CV491/27509 including the Kohler carburetor parts, Kohler air filter parts, Kohler spark plug parts, and Kohler ignition coil parts. Browse the Kohler small engine parts catalog filtered by CV491/27509 for the complete parts inventory.
Kohler CV491/27509: 491 cc V-Twin OHV Engine Specification Number Service
The Kohler CV491 is a 491 cc V-twin four-stroke engine, distinguished from single-cylinder engines by its two-cylinder configuration and higher power output. The /27509 specification number identifies the carburetor configuration within the CV491 series. Annual carburetor float bowl draining before winter storage prevents the varnish deposits that cause most CV491 hard-start complaints. The small engine repair help section covers CV491 carburetor service and V-twin maintenance specifics.
Most Replaced Parts on the Kohler CV491/27509
Carburetor for the Kohler CV491/27509
The /27509 specification identifies the carburetor configuration for this V-twin engine. Ethanol varnish during off-season storage is the leading cause of hard starting and idle surging. Confirm the specification number before ordering.
Air Filter for the CV491/27509
The V-twin configuration on a riding mower or zero-turn typically uses a larger air filter than single-cylinder engines. Replace at the start of each mowing season or every 25 hours.
Spark Plugs for the Kohler CV491/27509
The V-twin engine uses two spark plugs, one per cylinder. Replace both plugs together annually, even if only one shows visible wear, to maintain balanced combustion between cylinders.
Ignition Coil for the CV491/27509
A failing ignition coil on one cylinder produces a misfire under load. Test spark on both cylinders with an inline spark tester before removing either coil.
Why Choose Repair Clinic for Kohler CV491/27509 Parts
- Genuine Kohler OEM Components: Carburetors, spark plugs, air filters, and ignition coils confirmed for the CV491/27509 491 cc V-twin OHV engine Kohler small engine parts.
- /27509 Specification Number Identification: The specification number identifies the carburetor configuration within the CV491 series to prevent cross-variant substitution.
- V-Twin Dual Spark Plug Context: The CV491 uses two spark plugs, one per cylinder, and both should be replaced together to maintain balanced combustion.
- 365-Day Returns: Return any uninstalled Kohler part within a full year of purchase with no restocking fees.
Kohler CV491/27509 Small Engine Parts FAQ
What is the Kohler CV491/27509 and what equipment does it power?
The Kohler CV491/27509 is a 491 cc V-twin OHV four-stroke engine from Kohler’s CV series. The /27509 specification number identifies the carburetor and governor configuration within the CV491 engine series. This engine is commonly installed in riding lawn tractors and zero-turn mowers requiring more power than single-cylinder engines.
Why does my Kohler CV491/27509 not start after winter storage?
Hard starting after storage is almost always caused by carburetor varnish from ethanol-blend fuel in the float bowl during warm months. Drain the float bowl before winter storage to prevent this. Replace the fuel filter and clean the carburetor before ordering a replacement.
What does the /27509 specification number mean on the Kohler CV491?
The /27509 specification number identifies the carburetor and governor configuration within the CV491 engine series. The correct carburetor must be matched to this specification before ordering to prevent installing a carburetor from a different CV491 variant.
How often should I change the oil on the Kohler CV491/27509?
Change the oil after the first five hours on a new engine, then every 50 hours or once per mowing season. The V-twin configuration uses a larger oil capacity than single-cylinder engines, so confirm the correct quantity in the owner’s manual.
