Carburetor for 2001-2005 & 2010-2012 Polaris Sportsman 500 HO
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
- Polaris Sportsman 500 4x4 HO (2001-2005)
- Polaris Worker 500 (2001), when using the matching carburetor
- Polaris Sportsman 500 HO (2010-2012), with matching intake and controls
Product Overview
Sportsman carburetors often get replaced after stale fuel leaves the ATV hard to start, unable to idle, flooding, or surging on the trail. A complete replacement can be the practical answer when corrosion or damaged passages make rebuilding unreliable.
Clean the tank and fuel lines before installation so the same debris does not enter the new carburetor. Intake leaks, weak fuel supply, valve clearance, and ignition faults can imitate carburetor trouble.
This is an aftermarket replacement part and is not manufactured or supplied by the original equipment brand.
Key Features & Performance
- Complete replacement carburetor
- For select 500 HO model-year groups
- Useful after varnish, corrosion, or worn metering parts
- Aftermarket alternative to rebuilding a damaged body
Replaces Part Numbers
- 3130903
- 3130945, when the original carburetor and connections match
Common Uses
- Repairing a no-start after stale fuel
- Correcting flooding or fuel leakage
- Fixing an engine that will not idle without choke
- Replacing a corroded carburetor that cannot be cleaned
Technical Specifications
- Product Type: ATV carburetor
- Engine: Polaris 500 HO single-cylinder
- Fuel System: Carbureted
- Replacement Type: Aftermarket
Installation & Fitment
- Drain old fuel and clean the tank
- Replace contaminated filter and inspect the fuel pump
- Check the intake boot for cracks
- Transfer and adjust cables and choke correctly
- Set idle and mixture as allowed, then test at operating temperature
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown. Model names alone may not guarantee fitment. Compare the original component, reference number, connector or mounting design, dimensions, and any serial-number or production-date break before purchase.
Frequently Asked Questions
Q: Why does it only run with the choke on? A: A restricted pilot circuit, intake leak, or weak fuel supply is common; confirm the cause before replacement.
Q: Will jetting work at every altitude? A: Factory-style jetting may still require adjustment for altitude, intake, exhaust, and engine condition.
Q: Does it fit every Sportsman 500? A: No. Polaris used different carburetors and EFI systems across the 500 family.
Part Summary
keywords: Sportsman 500 HO carburetor, Polaris 3130903 replacement, 2001 Sportsman stale fuel repair, 2012 Polaris carb, ATV only runs with choke, aftermarket Polaris 500 fuel part
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.