Sun Coast Cycle Sports carries inspected used OEM parts for the Suzuki QuadRunner 250 (LT-F250/LT-4WD), produced from 1987 through 2002. One of the longest-running utility ATV platforms ever made, the QuadRunner 250 features a 246cc air-cooled SOHC single-cylinder engine with a 5-speed semi-automatic foot-shift transmission and a unique 3-speed sub-transmission offering high, low, and super-low range. All QuadRunner 250 parts at Sun Coast are visually inspected, individually photographed, and dispatched from our Florida parts warehouse.
QuadRunner 250 generation and parts compatibility
| Model | Years | Engine | Key differences |
|---|
| LT-F250 (2WD) | 1988-2002 | 246cc air-cooled single | Rear-wheel drive only. Lighter weight, simpler drivetrain. |
| LT-4WD / LT-F250F (4WD) | 1987-2002 | 246cc air-cooled single | Selectable 2WD/4WD with front differential lock. Front driveshaft and diff add weight and complexity. |
The 1987 model year had several one-year-only components: unique rear u-joint axles with a different spline count, unique front and rear racks, square axle nuts, and welded fan mounts on the frame. If sourcing parts for a 1987 QuadRunner, verify compatibility carefully. Carburetors changed across three distinct periods: 1987-1989, 1990-1999, and 2000-2002. The 2WD (LT-F250) and 4WD (LT-4WD/LT-F250F) models share the same engine, transmission, and most chassis components. The difference is the front differential, front driveshaft, and associated 4WD engagement switch on the 4WD version.
Platform relationship: The QuadRunner 250 shares its fundamental engine design with the King Quad 300 (LT-F300F). The King Quad has a longer stroke for 280cc displacement, an additional clutch plate, and an oil cooler. Frame-mounted body panels, racks, and many suspension components interchange between the two models. However, wheels do not cross over because the King Quad uses 5-lug rear hubs while the QuadRunner uses 4-lug.
Common QuadRunner 250 failure points and replacement parts
Carburetor flooding and fuel delivery issues (all years): The QuadRunner 250 is notorious for carburetor flooding, typically caused by a leaking float needle or a deteriorating fuel pump diaphragm. A wet vacuum hose between the carburetor and fuel pump is a telltale sign of diaphragm failure. These machines are highly sensitive to fuel quality, and ethanol-blend gasoline accelerates carburetor deterioration.
Overheating (QuadRunner 250 specifically): Unlike the King Quad 300 which has an oil cooler, the QuadRunner 250 relies solely on air cooling. Under heavy load or in hot weather, overheating is a common complaint. Some owners add a small aftermarket oil cooler or radiator fan as a preventive measure.
Drive chain stretch and wear: The chain-driven final drive on the QuadRunner 250 stretches with normal use and eventually causes power loss and sloppy engagement. Chain and sprocket replacement is a routine maintenance item.
Plastic body deterioration: As a vintage ATV, many surviving QuadRunner 250s have cracked or brittle body panels. OEM replacement plastics are increasingly difficult to source, making used panels in good condition valuable.
Commonly replaced QuadRunner 250 parts
- Carburetor and rebuild kits (year-specific)
- Fuel pump and fuel pump diaphragm
- Drive chain and sprockets
- Clutch plates and adjustment hardware
- Starter motor and starter relay
- Plastic fenders and body panels
- Seat cover
- Front differential components (4WD models)
Frequently asked questions
Q: What is the difference between a QuadRunner 250 and a King Quad 300?
Both share the same basic chassis and engine architecture. The King Quad 300 has a larger 280cc engine (vs. 246cc), an oil cooler, an additional clutch plate, and 5-lug rear hubs. Body panels and racks interchange, but wheels, engine internals, and some drivetrain components do not.
Q: Will 1990s QuadRunner 250 parts fit a 1987 model?
Most parts interchange across the full 1987-2002 production run. However, the 1987 model has several unique components including different rear axle u-joints (different spline count), unique racks, and square axle nuts. Additionally, carburetors fall into three groups (1987-1989, 1990-1999, 2000-2002) with limited cross-compatibility.
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