Arctic Cat 2005 ATV Service Manual Set: 250, 300, 400, 500, 650 H1/V-Twin (P/N 2257-187)

The engine/transmission procedures in Volume I can be used alongside the model-specific electrical tests and torque tables in Volume II when a repair spans several systems.

Coverage is limited to these utility ATV families; the 50, 90 and DVX 400 require different manuals.

Searchable Service Text and Wiring Detail

Search, bookmarks and diagram labels: Service text is searchable, but wiring-diagram labels are not included in text search. Embedded bookmarks cover all eleven technical sections and the wiring diagrams. Use these bookmarks instead of the original CD index links, which point to separate files. Small wiring labels require zooming.

Both volumes are combined in one printable 670-page PDF, including one CD-ROM index page. The total already includes ten pages reserved for notes within the volumes. The separate foreword linked from the CD index is not included.

Engine Overhaul, Belt Drive and Chassis Service

The following is a selection of the coverage. Additional topics include storage preparation and muffler/spark-arrester maintenance.

• Engine and transmission: Step-by-step removal, teardown and reassembly procedures, including valve, piston and cylinder service, crankcase separation, transmission gears and shift forks.

• Clutches and belt drive: Manual clutch adjustment, primary and centrifugal clutch service, one-way drives, driven-pulley and drive-clutch overhaul, and V-belt inspection and replacement.

• Fuel systems: Keihin carburetor disassembly, cleaning and assembly, vacuum-pulse fuel-pump testing, and separate electric fuel-pump tests for the V-Twin.

• Lubrication and cooling: Oil-pump pressure checks, oil-cooler service, radiator inspection, thermostat and fan testing, and model-specific water-pump procedures.

• Electrical diagnosis: Ignition and charging tests, starter-motor service, switch, sensor and relay checks, plus dedicated V-Twin engine-brake controller and actuator testing.

• Drive and chassis: Front-drive actuators, FIS differentials, rear gear cases, CV boots, ACT/FIS suspension, steering alignment, hydraulic calipers, master cylinders, brake bleeding and pad burnishing.

• Illustrations and fault tracing: Keyed exploded drawings, factory photographs, symptom-condition-remedy charts and thirteen model/configuration-specific color wiring diagrams support component identification and electrical diagnosis.

This manual is suited to technicians and experienced owners familiar with internal engine work and shop measuring equipment; complete overhaul work assumes established repair skills.

Powertrain-Specific Repair Depth

Separate engine/transmission sequences cover the 250/300, manual 400, automatic 400, automatic 500/650 H1, manual 500 and 650 V-Twin. Shared 500 automatic/H1 procedures retain model-specific specifications.

The in-frame service notes distinguish accessible top- and side-component work from center-crankcase repairs requiring engine/transmission removal. This helps establish the disassembly and equipment a job will require before work begins.

V-Twin material covers its twin-cylinder top end, crankcase, output drive and driven bevel gears, starter torque limiter and engine-brake hardware. Powertrain procedures also address output-shaft shimming and backlash. Separate V-Twin instructions cover belt-failure and belt-inspection mode clearing.

Maintenance and Fuel-System Variants

Air-cleaner procedures distinguish the 250/300, 400 FIS/ACT and TBX/500/650 groups. Valve/tappet adjustment includes feeler-gauge and factory-adjuster methods, with separate V-Twin instructions.

Routine service extends to compression testing, throttle and choke cables, oil filters and strainers, differential and rear-drive lubrication, brake inspection, coolant service and belt checks.

Carburetor application tables distinguish the Keihin CVK32, CVK34, CVK36 and CVK40 from the V-Twin's dual CVKR-D32 units. Water-pump procedures are separated for the manual 500, automatic 500/650 H1 and V-Twin assemblies.

Reference tables provide compression data, valve clearances, clutch and belt limits, gear backlash, fluid capacities and chassis dimensions. Electrical resistance, peak-voltage and component torque data are organized by model group.

Schematics and Factory Test Equipment

Named references include Carburetor Schematics, Oil Flow Charts, Rear Suspension/Rear Drive Assembly Schematics, Hydraulic Brake Assembly Schematics and Body Panel Assembly Schematics.

The wiring drawings separate manual and automatic 400 FIS/ACT configurations, with dedicated TBX, TRV, H1 and V-Twin diagrams.

Specified tools include Valve Gap Adjuster P/N 0444-092, Valve Clearance Adjuster P/N 0444-078, Crankcase Separator/Crankshaft Remover P/N 0444-009, and Driven Pulley Compressors P/N 0444-140 and 0444-121. Electrical tests reference the Fluke Model 73 Multimeter P/N 0644-191 and Peak Voltage Reading Adapter P/N 0644-307.

Assembly Cautions

Removing too much sealing-surface material from a valve cover or rocker case can alter camshaft clearance and damage the camshaft. The V-Twin water-pump section warns that an obstructed inspection hole can let coolant enter the crankcase and cause engine damage.

Pulley springs, battery electrolyte, hydraulic brakes and raised ATVs require the support, isolation and protective precautions specified for the work.

Examples of Valve-Clearance and Oil-Pressure Data

For the 250, cold-engine valve/tappet clearance is 0.03–0.08 mm at the intake and 0.08–0.13 mm at the exhaust.

The 650 H1 oil-pump pressure test specifies 20–35 psi at 3,000 rpm with oil at 60°C (140°F). Other engines have their own pressure ranges and test conditions.