2005 Husqvarna TC250
General Specifications
| Model | Husqvarna TC250 |
| Year | 2005 |
| Category | Motocross |
| Engine Type | Single-cylinder, liquid-cooled, 4-stroke, DOHC, 4-valve |
| Weight | 108.5 kg dry |
Engine
| Displacement | 249.5 cc |
| Bore x Stroke | 76.0 x 55.0 mm |
| Compression Ratio | 12.5:1 |
| Fuel System | Keihin FCR-MX 37 mm flat-slide carburettor with accelerator pump and TPS | Replacement Options |
| Ignition | Electronic CDI with digitally controlled variable advance |
| Spark Plug | NGK CR8EB |
| Spark Plug Gap | 0.7 mm |
| Cooling System | Liquid cooled with twin radiators |
| Starting System | Electric start with automatic decompressor |
Transmission
| Transmission | 5-speed constant-mesh manual |
| Clutch | Wet multi-plate, hydraulically operated |
| Final Drive | Chain |
Dimensions
| Overall Length | 2200 mm |
| Overall Width | 820 mm |
| Overall Height | 1270 mm |
| Wheelbase | 1485 mm |
| Ground Clearance | 335 mm |
| Seat Height | 965 mm |
| Fuel Capacity | 7.7 L |
Chassis
Suspension
| Front Suspension | 45 mm Marzocchi Shiver upside-down hydraulic fork, adjustable for compression and rebound damping | Fork Oil Levels |
| Front Suspension Travel | 300 mm |
| Rear Suspension | Sachs hydraulic monoshock with Progressive Soft Damp linkage, adjustable for spring preload, compression and rebound damping |
| Rear Suspension Travel | 320 mm |
| Fork Oil | AGIP Fork 7.5 (SAE 7.5); SAE 5 may be used in very cold conditions |
Brakes & Wheels
| Front Brake | 260 mm hydraulic disc with floating 2-piston caliper |
| Rear Brake | 220 mm hydraulic disc with floating caliper |
| Front Wheel Size | 1.60 x 21 in Takasago Excel light-alloy rim |
| Rear Wheel Size | 2.15 x 19 in Takasago Excel light-alloy rim |
Service Data
| Fuel Type | Premium unleaded petrol, 98 RON recommended |
| Premix Information | Not applicable - 4-stroke engine |
| Gearbox Oil | Engine, gearbox and primary drive share AGIP Racing 4T 10W-60; approximately 1.4 L oil capacity |
| Air Filter | Oiled foam air filter |
| Service Notes | Competition motocross model. Maintain engine oil and filter at short race intervals, clean and oil the air filter frequently and inspect valve clearances, cam-chain tension, cooling system, clutch, drive chain, wheel bearings and suspension linkage regularly. |
2005 Husqvarna TC250 – Continued Refinement of the Compact Four-Stroke
The 2005 Husqvarna TC250 was an evolutionary development of the new-generation 250 four-stroke platform introduced only a few years earlier. Rather than replacing the basic engine or chassis concept, Husqvarna concentrated on improving reliability, rideability and detail specification while retaining the compact 249.5cc DOHC engine, five-speed motocross gearbox and steel-framed European chassis.
The short-stroke engine retained its 76.0 x 55.0 mm bore and stroke and high 12.5:1 compression ratio. Fuel delivery was handled by a Keihin FCR-MX flat-slide carburettor, giving the TC250 the strong throttle response expected from a competition four-stroke of the period. Owners rebuilding a worn fuel system can compare replacement carburettor options when original components are no longer serviceable.
Suspension remained distinctly Husqvarna, with a 45 mm Marzocchi Shiver inverted fork offering approximately 300 mm of travel and a Sachs shock operating through the Progressive Soft Damp linkage at the rear. Correct oil condition and level remain critical on these older forks, and the MXOwners fork oil reference is useful during servicing.
The TC250 was still a serious race motorcycle, so surviving examples should be checked carefully for valve-clearance history, cam-chain wear, oil-change intervals and air-filter sealing. Wheel and linkage bearings also deserve close inspection after years of motocross use, with the MXOwners Bearing Finder useful during a chassis rebuild. The 2005 model did not represent a new generation, but it helped mature Husqvarna's compact four-stroke platform into a more established alternative to the increasingly dominant Japanese 250F machines.
