The Arctic Cat 4-Stroke Snowmobile 2006 Service Repair Manual is an invaluable resource for both novice and experienced mechanics. This comprehensive manual provides step-by-step instructions and detailed illustrations to guide you through a wide range of service and repair procedures. The manual covers all Arctic Cat Snowmobile 120 and 660 models including the F 120, Bearcat Wide Track, Bearcat Wide Track Turbo, Panther 660 Touring, Panther 660 Trail, T660 Touring, T660 Turbo ST, T660 Turbo Touring, T660 Turbo Trail, T660 Turbo Touring LE, and T660 Turbo Trail LE. This manual is designed to help you keep your Arctic Cat snowmobile in peak condition. It covers a comprehensive range of topics including: * **General Information and Specifications:** This section provides essential information such as general specifications, snowmobile identification, recommended gasoline and oil types, break-in procedures, genuine parts information, high altitude operation guidelines, drive chain lubrication instructions, low oil pressure warning light details, preparation for storage procedures, preparation after storage instructions, after break-in checkup procedures and checklists, engine specifications, cylinder head volume specifications, engine piston travel charts, crankshaft runout repair specifications, fraction/decimal conversions, metric/imperial conversions, torque conversions, tightening torque specifications, assembly schematics and torque specifications, engine torque patterns, Arctic Power Valve (APV) System information, oil consumption specifications, EFI specifications, throttle valve angle specifications, fuel pump specifications, carburetor specifications, electrical specifications, ignition timing specifications, steering/body torque specifications, drive system specifications, drive clutch/driven pulley specifications, Arctic Cat drive belt dimensions, drive system components, gear case performance calibrations, drive system torque specifications, rear suspension torque specifications, track warranty guidelines, track specifications, front suspension specifications, rear suspension specifications, and shock absorber specifications. * **Engine:** This section focuses on troubleshooting engine issues for both carbureted and 4-stroke models. * **Engine-Related Items:** This section delves into the intricacies of various engine-related components, including the water pump, pressure testing procedures, spark plug removal and installation, compression checks, valve servicing, oil filter and oil changes, oil pressure testing, oil flow charts, liquid cooling system operation, recoil starter maintenance, air silencer servicing, turbocharger/intercooler maintenance (if applicable), Arctic Power Valve (APV) System, and Exhaust Controlled Timing (ECT) System. * **Fuel Systems:** This section offers detailed insights into fuel systems for both carbureted and EFI models, along with information on related components. * **Electrical Systems:** This section covers the ignition system, throttle position sensor, main wiring harness testing, voltage regulator testing, low-oil light sensor testing, coolant temperature warning light testing, fuel gauge sender testing, electric fuel pump testing, ignition component testing, emergency stop switch fuse testing, ignition switch testing (electric start function), starter motor testing, magneto testing, troubleshooting electric start issues, ignition timing, brake light switch testing, headlight dimmer switch testing, speedometer sensor testing, accessory testing, and troubleshooting servomotor issues. * **Drive Train, Track & Brake Systems:** This section provides comprehensive coverage of drive chain and sprocket maintenance, drive chain, track, and driveshaft servicing, brake system maintenance, drive belt maintenance, drive clutch and driven pulley maintenance, drive train/brake disc maintenance, drive sprocket maintenance, track tension adjustments, track alignment, hydraulic brake system maintenance, troubleshooting track issues, troubleshooting hydraulic brake system issues, and troubleshooting drive clutch and driven pulley issues. * **Rear Suspension:** This section offers a detailed understanding of the rear suspension system, covering suspension setup basics, chassis and skid frame mounting locations, rear suspension servicing, ACT shock servicing, air shock rebuilding and recharging, and pressurizing rebuildable shocks. * **Steering and Body:** This section covers the steering post, ski wear bar, tie rods and steering links, spindle, steering tie rod, ski alignment, front suspension arms, front suspension (ski) shock absorber, sway bar, front suspension mounting bracket, console, front bumper/belly pan assembly, gas tank/seat assembly, seat cushion, taillight/brakelight assembly, windshield, backrest/rack assembly, tunnel/chassis/rear bumper/snow flap assembly, headlight assembly, and headlight aim adjustments. * **Wiring Diagrams:** The manual includes comprehensive wiring diagrams for the 2006 Arctic Cat snowmobile models. This manual is an invaluable resource for anyone looking to maintain, service or repair their Arctic Cat snowmobile. With its detailed instructions, numerous illustrations and wiring diagrams, this manual empowers you to handle a wide range of tasks with confidence.