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KTM 60 SX / 65 SX REPAIR MANUAL ENGINE

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Filed Under (KTM) by admin on 12-11-2010

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Carburetor adjustment Basic information about the original carburetor setting The original carburetor setting was adapted for an altitude of approx. 500 meters (1600 ft.) above sea level, and the ambient temperature of approx. 20°C (68°F), mainly for off-road use and central European premium-grade fuel (ROZ 95). Mixing ratio 2-stroke motor oil : super fuel 1:40 . Basic information of changing the carburetor setting Always start out from the original carburetor setting. Essential requirements are a clean air filter system, air-tight exhaust system and an intact carburetor. Experience has shown that adjusting the main jet, the idling jet and the jet needle is sufficient and that changes of other parts of the carburetor will not greatly affect engine performance. RULE OF THUMB: high altitude or high temperatures  choose leaner carburetor adjustment low altitude or low temperatures  choose richer carburetor adjustment * WARNING * -ONLYUSE PREMIUM – GRADE GASOLINE ROZ 95 MIXED WITH HIGH – GRADE TWO – STROKE ENGINE OIL . OTHER TYPES OF GASOLINE CAN CAUSE ENGINE FAILURE , AND USE OF SAME WILL VOID YOUR WARRANTY . -ONLYUSE HIGH – GRADE 2- STROKE ENGINE OIL OF KNOWN BRANDS ( I . E .SHELL ADVANCE RACING X). -NOTENOUGH OIL OR LOW – GRADE OILCAN CAUSE EROSION OF THE PISTON . USING TOO MUCH OIL , THE ENGINE CAN START SMOKING AND FOUL THE SPARKPLUG . -INTHE CASE OFA LEANER ADJUSTMENT OF THE CARBURETOR PROCEED CAUTIOUSLY . ALWAYSREDUCETHEJETSIZEINSTEPSOFONENUMBERTOAVOID OVERHEATING AND PISTON SEIZURE . NOTE: If despite a changed adjustment the engine does not run properly, look for mechanical faults and check the ignition system. Basic information on carburetor wear As a result of engine vibrations, throttle valve, jet needle, and needle jet are subjected to increased wear. This wear may cause carburetor malfunction (e.g., overly rich mixture). Therefore, these parts should be replaced after 1000 hours of using. Idling range – A Operation with closed throttle valve. This range is influenced by the idle adjusting screw 1 . Only make adjustments when the engine is hot. The idling speed can be changed by turning the idle adjusting screw. Turning it clockwise produces a higher idling speed and turning the screw counterclockwise produces a lower idling speed. Opening up – B Engine behavior when the throttle opens. The idle jet and the shape of the throttle valve influences this range. If, despite good idling-speed and part-throttle setting, the engine sputters and smokes when the throttle is fully opened and develops its full power not smoothly but suddenly at high engine speeds, the mixture to the carburetor will be too rich, the fuel level too high or the float needle is leaking. Part-throttle range – C Operation with partly open throttle valve. This range is only influenced by the jet needle (shape and position). The optimum part-throttle setting is controlled by the idling setting in the lower range and by the main jet in the upper range. If the engine runs on a four-stroke cycle or with reduced power when it is accelerated with the throttle partly open, the jet needle must be lowered by one notch. If then the engine pings, especially when accelerating under full power at maximum engine revs, the jet needle should be raised. If these faults should occur at the lower end of the part throttle range at a four-stroke running, make the idling range leaner; if the engine pings, adjust the idling range richer

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HARLEY DAVIDSON XLH 1200cc BIG BORE KIT INSTALLATION MANUAL

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Filed Under (Harley Davidson) by admin on 06-03-2011

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Boring and Honing Procedures 1. Check again for burrs on cylinder gasket surfaces and remove burrs before performing Step 2. 2. Install original head and base gaskets, CYLINDER TORQUE PLATES (Part Number 33446-A) and TORQUE BOLTS (Part Number 33446-4). Tighten TORQUE BOLTS following tightening procedure given in the INSTALLATION, CYLINDER HEAD procedure in the ENGINE section of the Service Manual. NOTE Torque plates, properly tightened and installed with gaskets, simulate engine operating conditions. Measurements will vary as much as 0.001 inch without torque plate. 3. The cylinder must be bored with gaskets and torque plates attached. Bore the cylinder to 0.003 inch under the desired finish size. 1 WARNING CAUTION CAUTION 1 WARNING Kit Number 4. Hone the cylinder to its finished size (See Figure 1) using a 280 grit rigid hone followed by a 240 grit flexible ball hone. Honing must be done with torque plates attached. All honing must be done from the bottom (crankcase) end of the cylinder. Work for a 60 degree crosshatch pattern. 5. See Figure 1. After machining and honing, chamfer the bottom edge of the cylinder liner. the chamfer provides a beveled surface for easier installation of the cylinder over the piston rings. Break leading edge of liner to a flat surface. The bottom edge of the liner will be somewhat sharp after machining. This sharp edge could easily be damaged during installation of the cylinder. Piston Installation The 1200cc pistons have an arrow on the top of the piston. This arrow must face the front of the engine when piston is installed. There is no front cylinder piston or rear cylinder piston. New pistons can be installed in either cylinder. Check piston rings for proper side clearance and end gap (See XLH Service Manual). Be sure end gaps of adjacent rings are installed 90 degrees apart. Assembly Follow assembly and torque specifications given in the ENGINE section of the applicable Service Manual. Replace original gaskets, O-rings and seals with new components furnished in kit. NOTE Push rod covers on 1991 and later models are one-piece and the correct O-rings are as follows: Bottom – Part Number 17944-89 Upper – Part Number 11190 Engine Break In For the first 500 miles, to wear-in critical parts, observe these few simple driving rules: During the first 50 miles, keep the engine speed below 2500 RPM in any gear. Up to 500 miles, vary the engine speed, avoiding any steady speed for long distances. Engine speed up to 3000 RPM is permissible in any gear. Avoid fast starts at wide open throttle. Drive slowly until engine warms up. Avoid running the engine at extremely low RPM in higher gears. 2 of 3 -J00001 1200cc CYLINDER FINAL BORE SIZE AFTER HONING STANDARD BORE DIAMETER 3.4980 inch + 0.0002 inch Figure 1. Bottom Edge of Cylinder Liner Chamfer i04852 Break Edge to Flat Surface

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2004 Honda CRF450R OWNER'S MANUAL

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Filed Under (Honda) by admin on 21-11-2010

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motorcycle can be kickstarted with the transmission in gear by disengaging the clutch before operating the kickstarter. Check the engine oil, transmission oil and coolant levels before starting the engine (page 21, 23, 24). Cold Engine Starting: 1. Turn the fuel valve ON. 2. Shift the transmission into neutral. 3. If the temperature is 35°C (95°F) or below, pull the choke knob fully out. 4. If the temperature is below 0°C (32°F), open the throttle two or three times. (The engine requires a richer mixture for starting in cold weather. When the throttle is so opened, the accelerator pump will feed extra fuel to the cylinder, thereby facilitating starting in cold weather.) 5. With the throttle closed, operate the kickstarter starting from the top of the kickstarter stroke, kick through to the bottom with a rapid, continuous motion. (Do not open the throttle, As the carburetor is equipped with an accelerator pump, excessive fuel will be charged into the engine, and the spark plug will be fouled if the throttle is opened and closed repeatedly. Excessive fuel in the engine makes kick- starting difficult.) 6. About a minute after the engine starts, push the choke knob back all the way to fully OFF. If idling is unstable, open the throttle slightly. (1) FUEL FILL CAP (2) BREATHER TUBE WARNING (1) FUEL VALVE (2) CHOKE KNOB Warm Engine Starting: 1. Turn the fuel valve ON. 2. Shift the transmission into neutral. 3. Pull the hot start lever and kick-start the engine. (Do not open the throttle.) 4. As soon as the engine starts, release the hot start lever 1. Shift the transmission into neutral. 2. Pull the hot start lever and kick-start the engine. (Do not open the throttle.) 3. As soon as the engine starts, release the hot start lever. Starting the engine excessively charged with fuel by throttle blipping or other reasons: 1. Shift the transmission into neutral. 2. With the throttle fully opened, repeat kickstarter operation approximately 10 times very slowly to discharge excessive fuel from the engine. 3. Pull the hot start lever and kick-start the engine (Do not open the throttle.) 4. As soon as the engine starts, release the hot start lever. Stopping The Engine 1. Shift the transmission into neutral. 2. Turn the fuel valve OFF. 3. Lightly open the throttle 2 – 3 times, and then close it. 4. Depress and hold the engine stop button until the engine stops completely. NOTE: • Failure to close the fuel valve may cause the carburetor to overflow. (1) THROTTLE GRIP (2) ENGINE STOP BUTTON Break-In Procedure Help assure your CRF’s future reliability and performance by paying extra attention to how you ride during the first operating day or 15 miles (25 km). During this period, avoid full-throttle starts and rapid acceleration. This same procedure should be followed each time when: • Piston is replaced • Rings are replaced • Cylinder is replaced • Crankshaft or crank bearing are replaced

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Cobra Motorcycle and ATV Specifications CX65 CX50 Sr. (The King) CX50 Jr. ECX 70 ECX 50 ECX80AC

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Filed Under (Cobra) by admin on 14-11-2010

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Dry Weight 122 lbs 91 lbs 81 lbs 210 lbs 206 lbs 210 lbs Engine Cobra 65cc 2-stroke Cobra 50cc 2-stroke Cobra 50cc 2-stroke Cobra 70cc 2-stroke Cobra 50cc 2-stroke Cobra 80cc 2-stroke Bore x Stroke 44.5mm x 41.7mm 39mm x 41.7mm 39mm x 41.7mm 44.5mm x 44.7mm 39mm x 41.7mm 47.6 mm x 44.7mm Induction Case Reed V-Force® Reed Valve- 24mm Mikuni carb Case Reed Carbon Pedal 19mm carb Case Reed Carbon Pedal 14mm carb Case Reed V-Force® Reed Valve- 24mm Mikuni carb Case Reed Carbon Pedal 21mm carb Case Reed V-Force® Reed Valve- 24mm Mikuni carb Cooling Water cooled Cylinder and Case Water cooled Water cooled Water cooled Cylinder and Case Water cooled Water cooled Cylinder and Case Clutch Hydraulic ally actuated Cobra 3Gx 3-Shoe Cobra 3Gx 3-Shoe Hydraulic ally actuated – (auto option) Cobra 3Gx 3-Shoe Rekluse Z-ball auto-clutch Transmission Six-speed sequential Single-speed auto Single-speed auto Six-speed sequential Single-speed auto Six-speed sequential Exhaust Tuned pipe and silencer Tuned pipe and silencer Tuned pipe and silencer Tuned pipe and silencer Tuned pipe and silencer Tuned pipe and silencer Lubrication Mixture lubrication Mixture lubrication Mixture lubrication Mixture lubrication Mixture lubrication Mixture lubrication Fuel Capacity 1.06 Gallons .85 Gallons .70 Gallons 1.9 Gallons 1.9 Gallons 1.9 Gallons Frame Twin Spar Oval HSLA Double Cradle 4130 ChrMo Steel Double Cradle 4130 ChrMo Steel Arens design twin spar Arens design twin spar Arens design twin spar Wheelbase 1140mm 990 mm 908 mm 1067mm (track 915mm) 1067mm (track 915mm) 1067mm (track 915mm) Seat Height 762mm 680 mm 607 mm 762 mm 737 mm 762mm Ground Clearance 250mm 240 mm 216 mm 205 mm 205 mm 205mm Front Brakes Hydraulic Disk (205mm) Hydraulic Disk (160mm) Hydraulic Disk (160mm) Hydraulic Disk (160mm) Hydraulic Disk (160mm) Hydraulic Disk (160mm) Rear Brakes Hydraulic Disk (165mm) Hydraulic Disk (140mm) Adjustable Drum Hydraulic Disk (180mm) Hydraulic Disk (180mm) Hydraulic Disk (180mm) Front Suspension Marzocchi 35mm USD Adjustable 220mm travel Cobra 30mm USD 210mm travel Marzocchi 32mm 168mm travel Dual A-Arm with SVO™ patented steering design. 248mm travel Dual A-Arm with SVO™ patented steering design. 248mm travel Dual A-Arm with SVO™ patented steering design. 248mm travel Rear Suspension Öhlins Fully Adjustable 270mm travel Fox Piggyback Fully Adjustable 248mm travel Öhlins Piggyback 170mm travel Fox Piggyback 220mm travel Solid axle Fox Piggyback 220mm travel Lightweight tube axle Fox Piggyback 220mm travel Solid axle Wheel Front / Rear 14″ spoke / 12″ spoke (Al rims, Billet hubs, 9ga. spokes) Cobra 12″ Billet Cobra 10″ Billet Cobra 10″ Billet Cobra 10″ Billet ITP 10×5 (4 x1) Al Douglas 8×6.5 (4×2.5) Al ITP 10×5 (4 x1) Al Douglas 8×6.5 (4×2.5) Al ITP 10×5 (4 x1) Al Douglas 8×6.5 (4×2.5) Al Tires Front / Rear 60-100×14 Dunlop 80-100×12 Dunlop 2.5×12 / 2.75×10 2.5×10 / 2.75×10 ITP Holeshot 19/6 ITP 16/6.50-9 ITP Holeshot 19/6 ITP 16/6.50-9 ITP Holeshot 19/6 ITP 16/6.50-9

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KAWASAKI 1700cc Liquid-Cooled V-Twin Engine 6-Speed Transmission with Overdrive

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Filed Under (Kawasaki) by admin on 13-12-2010

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Kawasaki’s first production bagger model is ready to take the street by force. The new Vulcan® 1700 Vaquero™ motorcycle combines the authority of a massive 1700cc liquid-cooled V-Twin engine together with low-slung, streetwise styling of a frame-mounted front cowling and lower chin fairing, sleek side-opening hard bags, and a choice of stealthy Ebony or fiery Candy Fire Red monotone paint. Besides its unmistakable style, the Vaquero also includes a smooth-shifting 6-speed overdrive transmission, cruise control, a full-feature audio system, and a host of custom-designed accessories. Get ready to rumble. 1700cc Liquid-Cooled V-Twin Engine The Vulcan 1700 Vaquero’s 1700cc V- Twin bristles with low-rpm torque, ensuring immediate and potent acceleration. 6-Speed Transmission with Overdrive With its overdrive top gear, the Vaquero’s 6-speed transmission teams up with the V-Twin engine for a relaxed highway cruising experience. Frame Mounted Front Cowling Muscular front cowling features a cut-down windscreen for a minimalist look and uninterrupted airflow, and is frame-mounted for light handling. Side-Opening Hard Bags Holding an impressive 9.2 gallons of storage apiece, the side bags integrate neatly into the Vaquero™’s smooth, clean lines. Electronic Cruise Control Conveniently located on the right handlebar, the Vaquero’s standard electronic cruise control precisely maintains speeds between 30 and 85 mph. Full-Feature Audio System High-fidelity audio system features AM/FM and weather radio, and is can be accessorized with iPod players, XM Radio and CB radios. Multi-Function LCD Instrumentation Located on the Vaquero’s stylish “muscle car” inspired dashboard, the multi-function LCD instrumentation clearly organizes and presents all essential information.
Engine Four-stroke, liquid-cooled, SOHC, four valve per cylinder, 52° V-twin Displacement 1,700cc / 103.7ci Bore X Stroke 102 x 104mm Compression Ratio 9.5:1 Maximum Torque 108 lb-ft @ 2,750 rpm Cooling System Liquid, plus cooling fins Ignition TCBI with Digital Advance Induction Digital fuel injection, dual 42mm throttle bodies Transmission 6-speed with overdrive and positive neutral finder Frame Type Steel, double-cradle with box-section single-tube backbone Rake/Trail 30° / 7.0 in. Front Suspension / Wheel Travel 45mm hydraulic fork / 5.5 in. Rear Suspension / Wheel Travel Swingarm with twin air-assisted shocks, with 4-way rebound damping / 3.1 in. Front Tire Size 130/90×16 Rear Tire Size 170/70×16 Brakes, Front / Rear Dual 300mm discs, dual twin-piston calipers / Single 300mm disc, twin-piston caliper Overall Length 98.8 in. Overall Width 38.2 in. Overall Height 50.8 in. Seat Height 28.7 in. Curb Weight 835.7 lbs.** Wheelbase 65.6 in. Fuel Capacity 5.3 gal. Color Choices Ebony, Candy Fire Red Warranty 36 months Good Times™ Protection Plan 12, 24 or 36 months ** Curb weight includes all necessary materials and fluids to operate correctly, full tank of fuel (more than 90-percent capacity) and tool kit (if supplied

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KAWASAKI Jet Ski STX-12F SPECIFICATIONS

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Filed Under (Kawasaki) by admin on 05-11-2010

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FEATURES & BENEFITS Kawasaki 2007 SPECIFICATIONS: JT1200D7F Engine type……………… 4-stroke, water cooled, 4- cylinder Displacement…………… 1,199 cm3 Bore & stroke…………… 83.0 x 55.4 mm Compression ratio…… 11.2:1 Induction system……… DOHC 16 valve (4 valves per cylinder) Maximum power………. 92 kW (125 PS) / 7,200 r/min Maximum torque……… 125 N·m / 6,500 r/min Cooling system……….. inducted water Fuel system…………….. EFI with single 54 mm throttle Starting ……………………. electric Battery…………………….. sealed, 12V 18Ah Propulsion system…… axial flow, single stage jet pump Maximum thrust………. 3,675 N (375 kgf) Seating capacity………. 3 seater Fuel capacity…………… 62 L L x W x H…………………. 3,120 x 1,180 x 1,050 mm Dry weight……………….. 334 kg Colours……………………. Red NOTE: Specifications subject to change without notice ENGINE Ñ Chrome composite plated cylinders are lightweight, durable and quickly carry heat away from the combustion chamber and piston for supreme durability at high power output. Ñ Semi-dry sump uses a single feed oil pump. Ñ Tip over protection shuts the engine off if the craft tilts more than 61o. Ñ 4-valves per cylinder provides maximum valve area for optimum flow. Fuel system Ñ Electronic Fuel Injection (EFI) with a single Mitsubishi throttle body and an injector at each intake port. Ñ Long intake tract enhances low-end power. Ñ Large capacity, low-noise airbox. Ñ Finger-type throttle reduces hand fatigue. Water-jacketed semi-dry exhaust Ñ Double-walled exhaust manifold and dual waterboxes help reduce noise. Ñ Water surrounding the exhaust system lowers engine compartment temperatures for more power. Ñ Semi-dry exhaust system keeps cooling water out of the exhaust before the waterbox to prevent water from entering the engine if the boat should capsize. Ñ Emissions meet US EPA 2006 and CARB 2008 regulations. Lanyard engine stop switch Ñ Engine will not crank with lanyard removed. Ñ Fastened to the rider, lanyard cuts the ignition if the rider dismounts. DRIVE SYSTEM Three-blade oval edge stainless steel impeller Ñ The shape of the blades give maximum efficiency with minimum cavitation. Ñ Fully enclosed impeller for damage protection. Ñ Stainless steel pump insert increases durability and helps ensure reliable performance. Ñ Tough stainless steel is used for incredible durability. HULL Ñ One-piece chopper over foam (COF) hull construction is lighter than a conventional hand-laid hull of similar size. Ñ Cab forward design makes more space for the rider and passengers. Ñ Gel coat for deep, lustrous, scratch resistant finish. Ñ Open rear deck for carrying bulky items, putting on skis, etc. Ñ
An automatically retractable boarding step makes boarding from deep water easy. Kawasaki Smart Steering (KSS) Ñ A steering sensor is linked to the EMM to aid in boat handling when the throttle is quickly released from high speed. Detail features Ñ 62 litre fuel tank for increased range. Ñ LCD instrumentation includes digital speedometer, tachometer, hour meter, clock, trip distance, trip time, fuel level and warning lamps. Ñ Includes high tech. troubleshooting function for the fuel injection system. A computer hook-up allows easy retrieval of entire troubleshooting history. Ñ A remote cooling system flushing point is included. Ñ Front hatch made of ABS for reduced weight, increased durability and enhanced appearance. Ñ Mirrors mounted on the deck reduce weight and enhance appearanced

2009 GAS GAS TXT PRO TECHNICAL SPECIFICATIONS AND OWNER'S MANUAL

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Filed Under (Gas Gas) by admin on 28-11-2010

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ENGINE 2 stroke, single cylinder, direct reed valve crankcase induction. Liquid cooled. 125 cc. engine Cylinder size 124,8 cc. Bore and stroke 54 x 54.5 mm. 200 cc. engine Cylinder size 175,3 cc. Bore and stroke 64 x 54,5 mm. 250 cc. engine Cylinder size 247,7 cc. Bore and stroke 72,5 x 60 mm. 280 cc. engine Cylinder size 272,2 cc. Bore and stroke 76 x 60 mm. 300 cc. engine Cylinder size 294,1 cc. Bore and stroke 79 x 60 mm. Carburettor, diameter of the diffusor 26 Lubrication system Mixture (50:1)(2%) Ignition system Digital magnetic flywheel CDI TRANSMISSION Transmission type 6 gears, Four / Six system by GAS GAS* (Patented). Clutch type Hydraulic command, 1/3 discs, variable progressive with diaphragm system by GAS GAS* (Patented). Driving system By chain Gear ratio 1st. 2,996 (35x27x28/16x24x23) 2nd. 2,571 (36/14) 3th. 2,187 (35/16) 4st. 2,112 (36x23x24/14x28x24) 5st. 1,125 (27/24) 6th. 0,821 (23/28)
-11- Primary reduction ratio 2,777 (75/27) Final reduction ratio 3,818 (42/11) Overall drive ratio 8,704 (6th. gear) Transmission oil Capacity 550 cc. Type 10W40 API SF o SG. FRAME Type Tubular profile made with Cr-Mo. Tyres Front 2,75 x 21″ Trial Rear 4,00 x 18″ Trial tubeless. Suspension Front Adjustable tele-hydraulic fork ø 40 mm. (125 / 200). Adjustable tele-hydraulic fork ø 40 mm with aluminium bars (250 / 280 / 300) Rear Variable progressive system with mono-shock multiadjustable. Suspension stroke Front 177 mm. Rear 164 mm. Front fork oil SAE 5. Front fork oil level ø 40 mm.(125 / 200) 180 mm. air chamber steel bar ø 40 mm. (250 / 280 / 300) 160 mm. air chamber aluminium bar BRAKES Type Disc brake. Disc diameter Front ø185 mm. 4 piston calipers. Rear ø150 mm. 2 piston calipers. DIMENSIONS Overall height 1180 mm. Overall width 820 mm. Seat height 650 mm. Ground clearance 315 mm. Wheelbase 1330 mm. Fuel tank capacity 3,1 liters.

KTM 250/ 300/ 380 SX,MXC,EXC ENGINE REPAIR MANUAL

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Filed Under (KTM) by admin on 12-11-2010

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Repair manual KTM 250 / 300 / 380 Art No 3206004 -E 2-2C main jet jet needle jet needle air control screw idle adjusting screw idle jet throttle valve Idling range A Operation with closed throttle valve. This range is influenced by the position of the air control screw 1 and the idle adjusting screw 2 . Only make adjustments when the engine is hot. To this end, slightly increase the idling speed of the engine by means of the idle adjusting screw. Turning it clockwise produces a higher idling speed and turning the screw counterclockwise produces a lower idling speed. Create a round and stable engine speed using the air control screw (basic position of the air control screw = open by 1.5 turns). Then adjust to the normal idling speed by means of the idle adjusting screw. Opening up B Engine behavior when the throttle opens. The idle jet and the shape of the throttle valve influences this range. If, despite good idling-speed and part-throttle setting, the engine sputters and smokes when the throttle is fully opened and develops its full power not smoothly but suddenly at high engine speeds, the mixture to the carburetor will be too rich, the fuel level too high or the float needle is leaking. Part-throttle range C Operation with partly open throttle valve. This range is only influenced by the jet needle (shape and position). The optimum part-throttle setting is controlled by the idling setting in the lower range and by the main jet in the upper range. If the engine runs on a four-stroke cycle or with reduced power when it is accelerated with the throttle partly open, the jet needle must be lowered by one notch. If then the engine pings, especially when accelerating under full power at maximum engine revs, the jet needle should be raised. If these faults should occur at the lower end of the part throttle range at a four-stroke running, make the idling range leaner; if the engine pings, adjust the idling range richer. Full throttle range D Operation with the throttle fully open (flat out). This range is influenced by the main jet and the jet needle. If the porcelain of the new spark plug is found to have a very bright or white coating or if the engine rings, after a short distance of riding flat out, a larger main jet is required. If the porcelain is dark brown or black with soot the main jet must be replaced by a smaller one. mixture too rich: too much fuel in proportion to air mixture too lean: not enough fuel in proportion to air 1 2 OPERATING RANGES OF THE CARBURETOR 2-3C Carburetor adjustment Basic information on the original carburetor setting The original carburetor setting was adapted for an altitude of approx. 500 meters (1600 ft.) above sea level, and the ambient temperature of approx. 20°C (68°F), mainly for off-road use and central European premium-grade fuel (ROZ 95 MOZ). Mixing ratio 2-stroke motor oil : super fuel 1:40 – 1:60. Basic information on a change of the carburetor setting Always start out from the original carburetor setting. Essential requirements are a clean air filter system, air-tight exhaust system and an intact carburetor. Experience has shown that adjusting the main jet, the idling jet and the jet needle is sufficient and that changes of other parts of the carburetor will not greatly affect engine performance. RULE OF THUMB:

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HONDA CRF250X OWNER'S MANUAL

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Filed Under (Honda) by admin on 01-12-2010

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Always follow the proper starting procedure described below. Your motorcycle can be kickstarted wirh the transmission in gear by pulling in the clutch lever before operating the kickstarter. Preparation Make sure that the transmission is in neutral. Turn the fuel valve ON. Fuel Valve Starting Procedure Always follow the proper starting procedure described as follow. 4. Warm up the engine; don’t operate the throttle. 5. About 15 seconds after the engine startes, push the choke knob back all the way to fully OFF. If idling is unstable, open the throttle slightly. Extended use of the choke may impair piston and cylinder wall lubrication and damage the engine. High Air Temperature 35°C (95°F) or above 1. Do not use the choke. 2. Keep the throttle fully closed. 3. Start the engine following step 3 under Normal Air Temperature. Low Air Temperature 10°C (50°) or below 1. Follow steps 1-4 under Normal Air Temperature. 2. Continue warming up the engine until it runs smoothly and responds to the throttle when the choke knob is pushed back all the way to fully OFF. Extended use of the choke may impair piston and cylinder wall lubrication and damage the engine. Hot Engine Starting 1. Pull the hot start lever (3) and start the engine following step 3 under Normal Air Temperature. 2. As soon as the engine starts, release the hot start lever. NOTICE NOTICE Basic Operating Instructions 15 (1) fuel valve The three-way fuel valve is used to control the flow of fuel from the fuel tank to the carburetor. ON -Turning the fuel valve ON before attempting to start the engine allows fuel to flow from the fuel tank to the carburetor. OFF -Turning the fuel valve OFF after stopping the engine prevents the flow of fuel from the fuel tank to the carburetor. RES -Turning the fuel valve to RES allows fuel to flow from the reserve fuel supply to the carburetor. (1) fuel valve (2) choke knob Check the engine oil, transmission oil and coolant levels before starting the engine (pages 44,47,48). To restart a warm engine, follow the procedure for ”High Air Temperature. ” Normal Air Temperature 10°C-35°C (50°F-95°F) 1. Pull the choke knob (2) up all the way to fully ON, if the engine is cold. 2. Keep the throttle fully closed. 3. Pull the clutch lever all the way in, and press the starter button with the throttle completely closed. Or operate the kickstarter to start the engine. Starting from the top of the stroke, kick through to the bottom with a rapid, continuous motion. Do not operate the throttle. Allowing the kickstarter to snap back freely against the pedal stop can damage the engine case.

Honda CB100 engine INTRODUCTION

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Filed Under (Honda) by admin on 13-11-2011

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Fuel Injection System for One Cylinder Motor Cycle Engine. Fuel injection has been developed for many years. But its common application is limited on car’s engine. With many reason fuel injection systems in motorcycle one cylinder engine has not been widely used yet. Fuel Injection System allows the amount of fuel, injected to be controlled appropriate to engine parameters such as engine speed, amount of air inducted to cylinder, temperature, for each cycle, over the entire engine operating conditions. This fuel injection research is done to find out the Volumetric Efficiency of the intake manifold system, the amount of fuel need to be injected for each engine cycle, and the engine characteristics over variation of test conditions. This research based on Honda CB100 engine, at applied thermodynamic Laboratory of Mechanical Engineering Department, Faculty of Engineering University of Indonesia. Experiment data from this
research shows the characteristics of injector duration as functions of engine speed, intake pressure, on one cylinder engine and the results of this research shows a good Volumetric Efficiency of the intake manifold designed using CFD (Computational Fluid Dynamic)

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