2008 Arctic Cat 250, DVX 250 Factory Service Manual (P/N 2258-064)

• Coverage and document scope: Covers the 2008 Arctic Cat 250 Utility and DVX 250 ATVs in a 135-page PDF, with model-specific procedures where the transmission, rear drive, bodywork, controls, and chassis layouts differ.
• Engine and transmission repair: Documents engine/transmission removal and installation; cylinder-head, camshaft, valve, piston, cylinder, crankshaft, balancer, and oil-pump service; V-belt drive-pulley, driven-pulley, and centrifugal-clutch work; plus separate DVX and Utility transmission teardown, inspection, and reassembly.
• Model-specific driveline service: Includes the DVX drive chain, sprockets, rear axle, axle housing, bearings, and seals, along with the Utility driveshaft, universal joint, bevel-gear final drive, rear axle, bearings, and seals.
• Fuel, cooling, brakes, and scheduled maintenance: Covers Keihin CVK32 carburetor removal and overhaul, throttle and idle adjustment, radiator and thermostat service, cooling-fan and water-pump checks, valve-clearance and compression testing, hydraulic brake bleeding, pad burnishing, and V-belt inspection.
• Electrical diagnosis: Provides connector-side voltage and resistance tests plus peak-voltage checks for the brake switches, fan circuit, fuse block, ignition coil, magneto and stator, starter and relays, CDI, regulator/rectifier, lighting, DVX indicator lights, and LCD gauge assembly.
• Factory reference material: Supplies component-specific torque tables, fluid and lubricant data, wear limits, clearances, electrical test specifications, and system troubleshooting charts. Visual references include the carburetor schematic, oil-flow chart, separate DVX and Utility rear-drive schematics, suspension assembly schematics, and electrical connector views.

This is a shop-level service manual, not an owner's maintenance booklet. Its procedures assume familiarity with disassembly, precision measurement, safe lifting, electrical testing, and special service tools, making it best suited to technicians and experienced ATV mechanics equipped for engine, V-belt drive, brake, and electrical repair. The manual's precautions address securely supporting the ATV as well as hazards involving fuel, batteries, corrosive brake fluid, hot coolant, and compressed springs.

Model-Specific Service Depth

The DVX and Utility versions are not treated as interchangeable. DVX coverage follows the chain-driven rear axle and sprocket arrangement, while Utility procedures address the driveshaft, universal joint, secondary bevel gears, and rear final-drive case. The Utility model also receives separate instructions for its recoil starter, racks, instrument pod, and access panels. These distinctions carry into engine removal, transmission work, rear suspension, brake service, and electrical-component access.

Engine and Transmission Repair Depth

The engine chapter progresses from complete power-unit removal through top-side, left-side, right-side, and center-crankcase service. It covers valve and camshaft inspection, piston and cylinder measurement, crankshaft and connecting-rod checks, crankcase separation and joining, oil-pump service, and final installation. The V-belt drive material includes the drive pulley, driven pulley, centrifugal clutch, belt cover, and the Utility recoil starter. Transmission sections then separate DVX and Utility gear, shaft, clutch-dog, shift-fork, seal, and bearing repair procedures.

Factory tools are identified by number rather than left generic. Engine and tune-up work calls out the Compression Gauge 0644-376, Valve Clearance Adjuster 0444-178, Crankcase Separator/Crankshaft Remover 0444-009, Piston Pin Puller 0644-328, and Spanner Wrench 0444-153. Driveline and electrical work identifies the Rear Axle Nut Wrench 0444-184, Pivot Lock Nut Wrench 0444-201, Fluke Model 73 Multimeter 0644-191, and Peak Voltage Reading Adapter 0644-307.

Diagnostics, Repair Cautions, and Scope

System-specific troubleshooting tables cover starting and compression faults, abnormal engine noise, overheating, carburetion and cooling problems, charging and ignition failures, starter faults, drive and brake complaints, suspension behavior, and steering issues. The electrical chapter is built around component and harness-side testing; it does not include a complete vehicle wiring-diagram chapter.

Two details show the level of repair guidance. The V-belt procedure warns that incorrect belt position can prevent full crankshaft-spline engagement, leave the drive pulley under-tightened, and cause severe drive-sheave or crankshaft damage. The suspension section warns that over-tightening the front shock mounting nut can damage the shock eyelet or its mount.

This publication is a service and repair manual, not a parts catalog. It directs the reader to the applicable Illustrated Parts Manual for replacement-part numbers, quantities, and descriptions.