Arctic Cat 250 & DVX 250 ATV Service Manual (2008)

This Arctic Cat service manual covers the 2008 250 Utility and DVX 250 ATVs, with model-specific procedures where the transmission, rear drive, bodywork, controls, and chassis layouts differ.

Searchable Text, Contents Links, and PDF Pages

Search and diagram detail: Body text is searchable, although some illustration labels are outside the text layer. The contents page has chapter-navigation buttons; its Foreword button and the single embedded PDF bookmark have no valid destination. Small carburetor callouts are readable with zooming.

One printable English PDF contains 135 pages, including one general contents page and 134 numbered chapter pages.

Engine, Driveline, and Chassis Service

The following selected topics show the manual's coverage rather than its complete contents. Other sections cover storage preparation and spark-arrester cleaning.

• Engine and transmission repair: Engine/transmission removal and installation; cylinder-head, camshaft, valve, piston, cylinder, crankshaft, balancer, and oil-pump service; plus separate DVX and Utility transmission teardown, inspection, and reassembly.

• V-belt drive: Drive-pulley, driven-pulley, and centrifugal-clutch disassembly, inspection, and assembly; belt-cover inspection; and separate Utility recoil-starter procedures.

• Model-specific driveline service: DVX drive-chain adjustment and service of sprockets, rear axle, axle housing, bearings, and seals; Utility driveshaft, universal joint, bevel-gear drive, rear axle, bearings, and seals.

• Fuel and cooling systems: Keihin CVK32 carburetor removal and overhaul, throttle and idle adjustment, radiator and thermostat service, cooling-fan tests, and water-pump seal replacement.

• Maintenance and brakes: Scheduled service, valve-clearance adjustment, compression testing, V-belt inspection, hydraulic brake bleeding, brake-pad replacement, and pad burnishing.

• Electrical diagnosis: Connector-side voltage and resistance tests and peak-voltage checks for brake switches, fan circuits, fuse block, ignition coil, magneto and stator, starter and relays, CDI, regulator/rectifier, lighting, DVX indicator lights, and the LCD gauge assembly.

• Suspension and steering: Shock-absorber replacement, rear spring-preload adjustment, swing-arm and front A-arm service, steering-post and tie-rod inspection, and toe-in/toe-out adjustment.

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.

Engine Repair and Service Planning

The engine chapter provides step-by-step procedures for crankcase separation and joining, valve timing, and power-unit installation. Top-side, left-side, and right-side work can be performed with the engine in the frame; center-crankcase service requires removal. These distinctions help determine whether a planned repair needs complete power-unit removal.

Separate transmission procedures address gears, shafts, clutch dogs, shift forks, seals, and bearings. Utility instructions also cover the secondary drive and driven bevel-gear assemblies.

Special tools: Engine and tune-up work identifies 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.

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.

Rear Drive, Brakes, and Chassis Differences

The DVX and Utility versions are not treated as interchangeable. Utility coverage includes separate rack, instrument-pod, and access-panel instructions. Its rear final-drive case is checked for smooth operation; internal catching, binding, or gear noise calls for replacement of the gear-case assembly rather than an internal gear overhaul.

Driveline tools: The Rear Axle Nut Wrench 0444-184 and Pivot Lock Nut Wrench 0444-201 are identified. The DVX axle procedure includes a torque-wrench correction formula for the offset axle-nut tool.

The DVX rear caliper contains separate pad sets for the main lever and auxiliary pedal. Front and auxiliary brake master cylinders are replaced as assemblies. The suspension section warns that over-tightening a front shock mounting nut can damage the shock eyelet or its mount.

Secure ATV support and precautions for fuel, batteries, corrosive brake fluid, hot coolant, and compressed springs are addressed throughout the procedures.

Fuel, Cooling, and Electrical Fault Finding

Carburetor work covers the vacuum piston, jets, float valve, and float-height inspection. Cooling procedures include thermostat opening tests and mechanical-seal and drive-seal replacement as a set. Oil-pump disassembly and inspection are included, but a defective pump is replaced.

Electrical testing: The Fluke Model 73 Multimeter 0644-191 and Peak Voltage Reading Adapter 0644-307 are specified. Harness-side and component tests help distinguish supply or connection faults from component failures. The starter motor and CDI are treated as replacement components, rather than internal overhaul jobs.

System-specific troubleshooting tables address starting and compression faults, abnormal engine noise, overheating, carburetion, charging and ignition failures, starter faults, drive and brake complaints, suspension behavior, and steering issues.

Illustrated references: The Carburetor Schematic, Oil Flow Chart, separate DVX and Utility Rear Drive Assembly Schematics, Front and Rear Suspension Assembly Schematics, and electrical connector views support component identification. Electrical coverage centers on component and harness testing; complete vehicle wiring diagrams are not included.

Component-specific torque tables, fluid and lubricant data, wear limits, clearances, and electrical test specifications accompany the procedures. This publication is a service and repair manual, not a parts catalog; it refers to the applicable Illustrated Parts Manual for replacement-part numbers, quantities, and descriptions.

Examples of Valve-Clearance and Carburetor Data

Cold-engine valve/tappet-clearance specifications are 0.03–0.08 mm for the intake and 0.08–0.13 mm for the exhaust, alongside the valve-adjustment procedures.

For the Keihin CVK32, the float-arm-height specification is 17.0 mm (0.67 in.). The inspection description specifies the carburetor on its side with the float arm contacting the needle valve.