2002-2010 Hyosung GT250 Service Repair Workshop Manual

This is the COMPLETE Service and Repair Manual for the 2002-2010 Hyosung GT250 Service Repair Workshop Manual. It covers every single detail.

2002-2010 Hyosung GT250 Service Repair Workshop Manual PDF VEHICLE/EQUIPMENT INTRODUCTION: The Hyosung GT250 Comet, produced from 2002 through 2010, was the mid-displacement sibling in Hyosung's Comet sport bike lineup, sitting between the entry-level GT125 and the larger GT650. The GT250 was powered by a liquid-cooled 249cc V-twin engine, making it one of the few genuine V-twin motorcycles in the 250cc class -- a segment otherwise dominated by parallel twins and single-cylinder engines. This V-twin configuration gave the GT250 a distinctive broad powerband, smoother delivery, and a satisfying exhaust note that appealed to riders looking for a step up from entry-level bikes. The steel perimeter frame, clip-on handlebars, rear-set footpegs, and full sport fairing gave it the aggressive stance of a larger supersport. Hyosung, based in South Korea, designed the GT250 with input from engineers familiar with Japanese sport bike engineering, resulting in a machine that offered compelling specifications at a highly competitive price point. The GT250 found markets across Europe, Asia, Australia, and North America, particularly among riders who wanted sport bike styling with manageable power and low insurance costs. SERVICE AND REPAIR SCOPE: - Hyosung GT250 2002-2010 General Information - Hyosung GT250 Fuel system - dual carburetor synchronization, jet replacement - Hyosung GT250 Cooling system - coolant drain and refill, radiator inspection - Hyosung GT250 Engine top end - V-twin cylinder heads, cam chain tensioner - Hyosung GT250 Clutch - cable adjustment, plate thickness measurement - Hyosung GT250 Engine lubrication - oil filter, strainer screen cleaning - Hyosung GT250 Engine removal and installation procedures - Hyosung GT250 Crankshaft - bearing inspection, end float measurement - Hyosung GT250 Transmission - gear shift drum, shift fork inspection - Hyosung GT250 Wheels and tires - spoke lacing, rim tape replacement - Hyosung GT250 Final drive - chain adjustment, sprocket wear limits - Hyosung GT250 Brakes - caliper piston retraction, pad wear limits - Hyosung GT250 Suspension - fork cartridge service, shock preload - Hyosung GT250 Steering - steering head bearing preload, dust seal - Hyosung GT250 Frame and fairing fastener locations - Hyosung GT250 Electrical system - regulator output, stator resistance - V-twin dual carburetor vacuum synchronization procedure - Valve clearance adjustment with shim-over-bucket method - Spark plug gap and heat range specifications per operating climate - Ignition coil primary and secondary resistance testing - Coolant thermostat opening temperature verification TECHNICAL SPECIFICATIONS: - Manufacturer: Hyosung Motors - Model: Comet GT250 - Years: 2002-2010 - Engine: Liquid-cooled, 4-stroke, DOHC, 75-degree V-twin - Displacement: 249cc - Bore x stroke: approximately 61.0 mm x 42.5 mm - Compression ratio: approximately 11.5:1 - Maximum power: approximately 30 hp at 10,500 rpm - Transmission: 6-speed constant mesh -

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