1996-1997 250-260 LQ – Owners Manual
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THE NEW ATK Most American motorcyclists share a common Your beautiful ATK Liquid-Cooled motorcycle is dream—to manufacturer an American-made proof that the New ATK is right on target. Only motorcycle that sets new standards for quality, the creative thinking of ATK could conceive and performance, creative design and fresh engi commit to building such a machine. Comprising neering concepts. That dream, and a commit the design's integrity and quality with the use of ment to transform the dream into reality, gave anything less than the best components was birth to ATK Motorcycles back in 1983. never considered. That's why every new ATKLQ is fitted with Answer Protaper handlebars, billet The first ATK model, a light-weight four-stroke aluminum triple clamps and wheel hubs, chrome Single, caused a great deal of excitement moly steel frames and swingarms, WP forks and among the press and anxious buyers. Additional shocks, stainless steel brake rotors and brake ATK models followed, including two-stroke hoses, huge radiators, nickel-plated or stainless Singles. As the demand for ATK's unique, no steel exhaust systems, premium tires and compromise motorcycles grew, production completely maintenance-free rear suspension facilities became crowded. systems. ATK's factory moved to larger quarters in L.A. We at ATK are extremely proud of our motorcy during 1990, and then to Centerville, Utah, just cles. An ATK's level of sophistication and quality north of Salt Lake City, in 1993. New manage sets new standards for manufacturers in Japan, ment and additional financial backing also Italy and Austria to try to achieve. But, we'll let joined The New ATK Team in Utah. Millions of you in on a secret, we don't think they can. The dollars have been committed to expanding dream that gave birth to ATK is still being ATK's impact in the market place by growing the dreamed, and you won't believe what we are dealer network, increased funds and technology seeing. for Research and Development, better produc tion techniques, a larger budget for advertising and promotion, and a professional, responsible Sincerely, business management team. Michael L. Tullis Chairman ATK America, Inc. ATK 9 9 6 O w n e r ' s M a n u a l © CONTENTS PAGE PAG INTRODUCTION 3 SUSPENSION INFORMATION 14 SPECIFICATIONS 1996 2S0/260 LQ 4 Fork oil 14 TORQUE SPECIFICATIONS 4 Fork oil level 14 Effects of oil level 14 PRE-RIDE INSPECTION CHECK LIST 5 14 ATK LIQUID-COOLED MOTORCYCLE BREAK-IN 6 Setting the fork oil level Fork-spring preload 15 FUEL/OIL MIXING CHART 6 Effects of spring preload IS ADJUSTMENTS 7 Setting the fork-spring preload 15 Rear suspension sag 8 BRAKES 16 Shock compression damping 8 Brake fluid 16 Shock rebound damping 8 Brake pads 16 Forks 9 CARBURETION 16 Fork compression damping, model 5 9 Adjusting the carburetion 16 Fork rebound damping model 5 9 Main jet 16 Fork compression damping model 6 10 Air bleed screw 17 Fork rebound damping model 6 10 Needle 17 Exhaust control valve adjustment 10 MAINTENANCE 18 Drive chain adjustment 11 PERIODIC MAINTENANCE Clutch lever 11 SCHEDULE CHART 18 Front brake lever 11 Changine the oil 18 Throttle 12 Drive chain 18 Rear brake pedal 12 Drive sprockets 19 Handlebar 12 Control cables 19 STARTING PROCEDURES 13 Throttle/control levers 19 Fuel petcock 13 Brake pads 20 Cold engine 13 Ignition 20 With warm engine 13 Air filter 20 Engine stop 13 WASHING YOUR MOTORCYCLE 21 STORAGE 22 PREPARING A STORED MOTORCYCLE FOR RIDING 22 © ATK 1 9 9 6 O w n e r ' s M a n u a l INTRODUCTION ^SAFETY INFORMATION 1. This machine is to be operated by an experienced rider only. Do not attempt to Congratulations on your purchase of America's finest off operate this machine at maximum power until road motorcycle: The ATK. you are totally familiar with its characteristics. 2. This machine is designed to be ridden by the This manual explains operation, inspection, basic operator only. Do not carry passengers on this maintenance and tuning of your machine. If you have any machine. questions about this manual or your machine, please 3. Always wear protective apparel. When contact your local ATK dealer. operating this machine, always wear an approved helmet with goggles or a face shield. Also wear heavy boots, gloves, and protective •^WARNING clothing. Always wear proper fitting clothing that will not be caught in any of the moving Please read this manual carefully and complete parts or controls of the machine. ly before operating this machine. Do not 4. Always maintain your machine in proper attempt to operate this machine until you have working order. For safety and reliability, the attained a satisfactory knowledge of its controls machine must be properly maintained. Alway and operating features and until you have been perform the pre-operation checks indicated in trained in safe and proper riding techniques. this manual. Correcting a mechanical problem Regular inspections and careful maintenance, before you ride may prevent an accident. along with good riding skills, will ensure that 5. Gasoline is highly flammable and can cause you safely enjoy the capabilites and the injury or death. Always turn off the engine while reliability of this machine. refueling. Take care to not spill any gasoline on the engine or exhaust system. Never refuel in the vicinity of an open flame, or while smoking. *~ IMPORTANT NOTICE If you should swallow gasoline, inhale excess gasoline vapors, or allow gasoline to get into This machine is designed strictly for competition your eyes, contact a doctor immediately. use, on a closed course. It is illegal for this 6. Only operate the machine in an area with machine to be operated on any public street, adequate ventilation. Exhaust fumes are road, or highway. Off road use on public lands poisonous. These fumes contain carbon monox may also be illegal. Please check local ide, which by itself is odorless and colorless. regulations before riding. Carbon monoxide is a dangerous gas which can cause unconsciousness or can be lethal. 7. Park the machine carefully. 8. Properly secure the machine before transporting it. When transporting the machine in another vehicle, always be sure it is properly secured in an upright position and that the fuel cock is in the 'off' position. Otherwise, fuel may leak out of the carburetor or fuel tank. For trans porting we recommend The Bike Shoe, available from your ATK dealer. ATK I 9 9 6 O w n e r ' s M a n u a l © SPECIFICATIONS 1996 250/260 LQ Engine type liquid-cooled two-stroke Single Displacement 250/ 251 cc Internal Transmission Ratios Compression ratio 7.04:1 250LQ 8 260LQ MODELS Carburetion 38mm Mikuni TMS Ignition SEM 12v 160w Primary drive 25/69 2.760 Spark plug NGK B8ES 1st 10/30 3.000 Transmission wide-ratio 6-speed 2nd 14/29 2.071 Starting system kick 3rd 14/23 1643 Fuel capacity 3.1 gallons 4th 15/21 1.400 Fuel requirements 90 + octane 5th 18/22 1.222 Fuel / oil mixing ratio 64:1 6th 19/21 1105 Cylinder bore size: 250 67.50mm TORQUE SPECIFICATIONS 260 67.75mm Standard piston size: ITEM TORQUE LB / FT 250 67.44/67.45mm Triple clamp pinch bolts 20 260 67.69/67.70mm Steering stem bolt (aluminum 15 Cylinder-to-piston Handlebar clamp bolts 16 skin clearance: Front axle bolt 20 250 .0020/.0024 inches Front axle pinch bolts 7 260 .0020/.0024 inches Stroke 250 8 260 69.8mm Fork guard protector screws 5 Wheelbase 58.5 inches Chain guide bolts 12 Rake / trail 27.1 degrees / 4.7 inches Rear axle adjuster lock nuts 15 Seat height 37.2 inches Rear axle. 50 Ground clearance 13.5 inches Shock mounting bolts 35 Footpeg height 16.2 inches Footpeg to seat top 20.5 inches Swingarm pivot bolt 50 Swingarm length 22.5 inches Brake hose banjo bolts 15 Weight, wet no fuel 230/235 pounds Caliper bolts 25 Front tire 90/90-21 Front brake rotor 15 Rear tire Rear brake rotor 30 120/80-18 Tire pressure 12-18 psi front 6 rear Rear sprocket bolts 30 Front wheel travel 11.8 inches Brake pedal pivot bolt 15 External adjustments compression 6 rebound damping Fuel tank mounting bolts 15 Standard fork springs 0.42 kg/mm Seat mounting bolts 15 Optional fork springs 0.38; 0.40; 0.44 kg/mm Side panel / front 8 rear fender Rear wheel travel 13.6 inches mounting bolts 15 External adjustments compression 8 rebound damping, spring preload Subframe / engine mounting bolts: Rear suspension sack 3.75 inches (95mm) 10mm bolts 50 Standard shock spring 5.6 or 5.7 kg / mm UIIMIIRmm UUIIO hnlK 30 Optional shock springs 5.4:5.6; 5.7,5.8; 6.0 kg/mm Front brake Brembo dual piston, 10.4 inch (260mm) ENGINE TORQUE SPECIFICATIONS stainless steel rotor Rear brake Brembo single piston, 8.8 inch (220mm) Head 15 stainless steel rotor Cylinder 15 Final drive ratio 1448 Exhaust flange bolts 15 Drive train D.I.D. 520 V.6 (king Clutch nut 80 Balance shaft nut 50 Transmission oil capacity 8/10 quart (800cc) Primary drive crankshaft nut 80 Type trans, oil any high-quality 80/90 transmission lubri- Magneto nut 50 cant Brake fluid Golden Spectra Supreme DOT 4, (DOT 5.1 non-silicone specifications) Coolant capacity 1.25 quarts Coolant mixture 50/50 water/antifreeze Standard thermostat 113 degree Optional thermostats 136.158 degree ATK 1996 Owner's Manual PRE-RIDE INSPECTION CHECK LIST • Wheel hubs and rims for cracks or damage.