adjusting the carbarator on a zongshen 250 gs

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Kawasaki Ninja 250 FAQ

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Filed Under (Kawasaki) by admin on 15-11-2010

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Am I too small for this motorcycle? Duke – Sun May 14 17:38:31 2000 I’m only about 5’2″ and don’t have a problem, even though I can only touch the ground with the ends of my toes. Once you get a feel for the balance of the bike it’s not hard to keep everything upright. Only place I have trouble is pushing the bike backwards in a parking lot. Usually I just walk the bike (beside it) to where I can get on and get going. How does the EX500 compare to the EX250? Craig M. – Mon May 22 10:23:29 2000 I have both the EX250 and the EX500; both are Y2K models. The 250 is a screamer that performs well and can easily get me into trouble. My only complaints about the 250 are the excessive nose dive when getting on the front brake hard and the skittishness of the rear during high speed cornering. Both are easily corrected with suspension adjustments, I’ve just been too lazy to get the parts and do the work. A bit more wind protection would be great too. The 500 addresses these problems, the diving of the front end (to a degree); the rear’s skittishness and the wind protection. A plus for the 500 is the greater torque and power off the line; it pulls stronger (in my opinion) and will get you into illegal speed territory just a bit quicker than the 250. With greater weight, is has more stability in high speed and windy situations. Insurance is just about the same for both, with the 250 getting the nod for gas mileage. Service requirements are almost identical for both as well, being that they’re both parallel twins, the technology is the virtually the same. The downfalls of the 500: $2K more than the 250 (can do a lot to the 250 with that kind of money); buzzy mirrors, barely useful; heavier weight to have to push around the garage; lesser gas mileage (55-60 MPG; 250 pushes 70 MPG easily); engine is worse than a nervous dog shaking around at idle and at speed (here the 250 is far superior and much smoother). In my opinion, the 500 is a better suited for a larger rider, from a comfort standpoint. I feel I can stretch out a bit more on it than the 250 (I’m 5′ 9″, 160 lbs). The 250′s brakes are better tuned than the 500 and the shifter is much smoother. That may be due to the 3,500 mile difference between the two bikes. Bottom line, both bikes are great, the 250 is now my wife’s ride (mainly) and the 500′s mine (unless she steals the keys away). In time, I’ll make the adjustments to the 250; she doesn’t push it like I do.

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2008 KTM 250 SX-F 250 XC-F, XCF-W 250 EXC-F, EXC-F SIX DAYS INSTALLATION MANUAL

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Filed Under (KTM) by admin on 22-10-2010

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Hand brake lever The hand brake lever [1] is mounted on the handlebars on the right and actuates the front wheel brake. The adjusting screw [A] can be used to change the basic position of the hand brake lever (see “Maintenance”). 1 A Short circuit button The short circuit button [2] turns off the engine. When pressing this button, the ignition circuit is short-circuited. 2 Headlamp switch (XCF-W) In this model the headlamp is switched on with the pull switch [5] . 5 Flasher switch The flasher switch is a separate unit and is mounted on the left portion of the handlebar. The wire harness is designed in a way that whenever you want to use your bike off-road, you can dismount the entire turn indicator system without affecting the function of the remaining electrical system. Flasher left Flasher right
OPERATION INSTRUMENTS » ENGLISH 7 1 2 3 4 5 Starter button Pushing the red starter button [1] will actuate the E-starter. Emergency OFF switch (EXC-F Australia) The red emergency-OFF switch [2] is arranged adjacent to the throttle grip. In this position, the E-starter is operational and the engine can be started. In this position, the E-starter and ignition circuits are interrupted.The E-starter cannot be actuated, and the engine will not start, not even if you attempt to start it with the kickstarter. Pushing the black starter button [3] will actuate the E-starter. Indicator lamps The green control lamp [4] flashes in the same rhythm as the flashing indicator when the indicator is working. The blue control lamp [5] lights up when the high beam is on. TEST All of the display segments briefly light up for the display function test. Electronic speedometer The display in the electronic speedometer is activated as soon as you press a button on the speedometer or an impulse is received from the wheel sensor. The display lights up when the engine is running. The display is cleared if no button is pressed for 1 minute or no impulse is received from the wheel sensor. The button is used to change between display modes. The + and – buttons are used to control various functions

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KYMCO MAXXER 300/ 250 MONGOOSE 300/ 250 SERVICE MANUAL

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Filed Under (Kymco) by admin on 26-10-2010

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apply or add designated greases and lubricants to the specified lubrication points. ÑAfter reassembly, check all parts for proper tightening and operation. ÑWhen two persons work together, pay attention to the mutual working safety. ÑDisconnect the battery negative (-) terminal before operation. ÑWhen using a spanner or other tools, make sure not to damage the motorcycle surface. ÑAfter operation, check all connecting points, fasteners, and lines for proper connection and installation. ÑWhen connecting the battery, the positive (+) terminal must be connected first. ÑAfter connection, apply grease to the battery terminals. ÑTerminal caps shall be installed securely. 1 . GENERAL INFORMATION 1-6 ATV 300/250 ÑIf the fuse is burned out, find the cause and repair it. Replace it with a new one according to the specified capacity. ÑAfter operation, terminal caps shall be installed securely. ÑWhen taking out the connector, the lock on the connector shall be released before operation. ÑHold the connector body when connecting or disconnecting it. ÑDo not pull the connector wire. ÑCheck if any connector terminal is bending, protruding or loose. Confirm Capacity 1 . GENERAL INFORMATION 1-7 ATV 300/250 ÑThe connector shall be inserted completely. ÑIf the double connector has a lock, lock it at the correct position. ÑCheck if there is any loose wire

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2006 KTM 250 SX-F 250 EXC RACING 400 EXC RACING 450 SX, XC, EXC RACING 525 SX, XC, EXC RACING, REPAIR MANUAL

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Filed Under (KTM) by admin on 05-05-2012

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Hot start lever (250 SX-F) If you pull the red hot start lever [1] during the starting procedure backward, a bore in the carburetor will be opened through which the engine may take in additional air. The result is a „lean” fuel-air mixture of the type needed for hot starts.
ENGLISH 7 OPERATION INSTRUMENTS » Headlamp switch (EXCUSA) In this model the headlamp is switched on with the pull switch [1] . Flasher switch The flasher switch is a separate unit and is mounted on the left portion of the handlebar. The wire harness is designed in a way that whenever you want to use your bike off-road, you can dismount the entire turn indicator system without affecting the function of the remaining electrical system. Flasher left Flasher right Starter button (EXC) Pushing the black starter button [2] will actuate the E-starter. Emergency OFF switch (EXC Australia) The red emergency-OFF switch [3] is arranged adjacent to the throttle grip. In this position, the E-starter is operational and the engine can be started. In this position, the E-starter and ignition circuits are interrupted.The E-starter cannot be actuated, and the engine will not start, not even if you attempt to start it with the kickstarter. Pushing the black starter button [4] will actuate the E-starter. 2 3 4 5 6 Indicator lamps The green control lamp [5] flashes in the same rhythm as the flashing indicator when the indicator is working. The blue control lamp [6] lights up when the high beam is on

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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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KTM 125/ 200/ 250/ 300 SX, MXC, EXC SERVICE MANUAL

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

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Compression damping of shock absorber (MXC, EXC) The compression damping (during compression) can be adjusted for the MXC and EXC shock absorbers (Mono Compression Control). The degree of damping can be adjusted by turning adjusting screw 1 with a screwdriver. Turning in a clockwise direction will increase the damping, turning in a counterclockwise direction will decrease the damping. STANDARD ADJUSTMENT: -Turn the adjusting screw clockwise to the stop. -Then turn the adjusting screw counterclockwise, counting the number of clicks that corresponds to the respective type of shock absorber. Type White Power 1218X757…………..17 clicks Type White Power 1218X759…………..17 clicks * WARNING * THE DAMPING UNIT OF THE SHOCK ABSORBER IS FILLED WITH HIGH – COMPRESSION NITROGEN . NEVER TRY TO TAKE THE SHOCK ABSORBER APART OR TO DO ANY MAINTEN – ANCE WORK YOURSELF . SEVERE INJURIES COULD BE THE RESULT . NEVER UNSCREW THE BLACK SCREW 2 CONNECTION (24 MM ). Rebound damping of shock absorber (SX, MXC, EXC) By using the adjusting screw 3 , the degree of damping of the rebound can be adjusted. Turn the knob to the right side to increase damping, turn it to the left side to reduce damping during rebounding. STANDARD ADJUSTMENT: -Turn the adjusting screw clockwise to the stop. -Then turn the adjusting screw counterclockwise, counting the number of clicks that corresponds to the respective type of shock absorber. Type White Power 1218X756…………..28 clicks Type White Power 1218X757…………..28 clicks Type White Power 1218X759…………..26 clicks * WARNING * THE DAMPING UNIT OF THE SHOCK ABSORBER IS FILLED WITH HIGH – COMPRESSION NITROGEN . N EVERTRYTOTAKETHESHOCKABSORBERAPARTORTODOANYMAINTE – NANCE WORK YOURSELF . SEVERE INJURIES COULD BE THE RESULT . NEVER UNSCREW THE BLACK SCREW 4 CONNECTION (15 MM )

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APRILIA SPORTCITY 125-200 Technical specifications

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Filed Under (Aprilia) by admin on 07-11-2010

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The engine and transmission assembly also acts as swing arm. Suspension is provided by two rear shock absorbers. Spring preload is adjustable for maximum efficiency under all load and road conditions. Rear wheel travel is 80 mm , more than enough to smooth out even the roughest surfaces. The SPORTCITY 250 i.e. is equipped with 15 inch wheels and large, high profile tubeless tyres (120/70 at the front and 130/80 at the rear). Rolling diameter is therefore equivalent to that of a 16 inch tyre but the ability to absorb shocks from rough road surfaces is far better, ensuring a superbly smooth ride. In conjunction with the excellent frame, this intelligent choice of tyres gives the SPORTCITY 250 i.e. excellent stability and the sort of intuitive feel that makes it a piece of cake to ride even for novices . The brakes are another of the strong points of the SPORTCITY 250 i.e. . The new system features triple discs for far shorter stopping distances and far greater active safety. Even inexperienced riders will have no trouble in pulling up well ahead of trouble. At 90 km/h the SPORTCITY 250 i.e. takes just 2.7 seconds to come to a full stop . The front brakes feature two 260 mm discs and floating calipers with two parallel pistons . The rear disc is a 220 mm unit with single piston caliper. Engine technology is another major plus point for the SPORTCITY 250 i.e. Its new electronic fuel injected engine is state of the art on the scooter scene . Powerful, flexible, and extremely low on emissions and consumption, this 250 cc single cylinder unit is perfect for the job in hand. Developing 22.5 HP at 8,000 rpm with 21 Nm of torque at 6,250 rpm, the engine delivers standard-setting performance . It also enables the Sportcity to function as a fun to ride sports scooter not only in town centres but on fast urban ring roads too. And the SPORTCITY 250 i.e. respects the environment wherever it goes, being one of the few scooters to conform to Euro 3 emission control standards. Finally, miserly fuel consumption and a generous 9 litre tank give the SPORTCITY 250 i.e. great autonomy . Engine Horizontal, single cylinder, 4 stroke. Forced liquid cooling with centrifugal pump. 4 valve head with overhead camshaft Fuel Unleaded petrol Bore and stroke 72 x 60 mm Displacement 244,29 cc Compression ratio 11:1 Maximum power 16.5 HP (22.5 kW) at 8,000 rpm Maximum torque 21 Nm at 6,250 rpm Fuel system Electronic fuel injection Ignition Electronic inductive discharge ignition with variable advance Starting Electric Alternator 300 W Lubrication Wet sump. Forced circulation with mechanical pump Gearbox Automatic torque converter Clutch Automatic centrifugal dry clutch Primary drive V belt Final drive Gearbox Frame Open cradle in high tensile strength steel Front suspension Hydraulic telescopic fork with 35 mm stanchions. Wheel travel 100 mm Rear suspension Engine unit acting as swinging arm. Double hydraulic shock absorber with adjustable preload. Wheel travel 80 mm Brakes Front: Twin ∅ 260 mm stainless steel discs. Twin piston floating callipers Rear: ∅ 220 mm stainless steel disc Wheels Light alloy Front: 2.75 x 15″ Rear: 3.00 x 15″ Tyres Tubeless. Front: 120 / 70 x 15″ Rear: 130 / 80 x 15″ Dimensions Maximum length: 1,985 mm Maximum width: 880 mm (at mirrors) Wheelbase: 1,360 mm Seat height; 815 mm Dry weight 148 kg Tank capacity 9 litres (reserve 1.5 litres) Colours Excalibur Grey, Shot Grey, Couture Blue, Moka Black Accessories 28 litre top box, 32 litre top box, 35 litre top box, large windshield, sports windshield, leg cover

KTM 990 SUPER DUKE 950 SUPERMOTO 950 SUPER ENDURO REPAIR MANUAL

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Filed Under (KTM) by admin on 22-11-2010

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Adjusting the position of the compression and rebound damping Rebound damping: -Turn in the adjusting screw 1 in a clockwise direction all the way to the stop. -Turn back the respective number of clicks in a counterclockwise direction. Compression damping, low speed: -Turn in the adjusting screw 2 in a clockwise direction all the way to the stop. -Turn back the respective number of clicks in a counterclockwise direction. Compression damping, high speed: -Turn in the adjusting screw 3 in a clockwise direction all the way to the stop. -Turn back the respective number of clicks in a counterclockwise direction. Adjusting the spring preload NOTE: the spring preload is the difference between the unloaded and preloaded length of the spring. -Tighten the adjusting nut 4 with the special tool T106 until you have the prescribed spring preload. -Tighten the lock screw on the adjusting nut Disassembling the shock absorber -Write down the spring preload. -Write down the rebound and compression damping settings, counting the clicks or number of turns while turning in a clockwise direction. -Unscrew all of the adjusting screws in a counterclockwise direction. -Clamp the upper part of the shock absorber in a vise as shown in the photo, using protective jaws. -Loosen the lock screw 1 (AH 4 mm), loosen the adjusting nut 2 using the special tool T106 3 and relieve the spring. NOTE: mark the position of the lock screw. -Press the spring down with the special tool T101S and pull out the spring retainer 4 . -Remove the washers 5 and spring 6 . 4-2 Repair manual WP Shock absorber 990 Super Duke, 950 Supermoto, 950

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2007 KTM 250 SX-F 450 SX-F INSTALLATION MANUAL

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Filed Under (KTM) by admin on 06-02-2012

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Clutch lever The clutch lever [1] is located on the left side of the handlebar. The adjusting screw [A] is used to change the original position of the clutch lever (see maintenance work on chassis and engine). The clutch is hydraulically actuated and adjusts itself automatically. Hot start lever If you pull the red hot start lever [2] during the starting procedure backward, a bore in the carburetor will be opened through which the engine may take in additional air. The result is a “lean” fuel-air mixture of the type needed for hot starts. 2 1 A Fuel tap OFF In this position the fuel tap is closed. No fuel can flow to the carburetor. ON During operation the twist grip must be turned to ON. This means that the fuel can flow to the carburetor. OPERATION INSTRUMENTS »
Starter button (450 SX-F) Pushing the black starter button [3] will actuate the E-starter. ENGLISH 6 Hand brake lever The hand brake lever [1] is mounted on the handlebars on the right and actuates the front wheel brake. The adjusting screw [A] can be used to change the basic position of the hand brake lever (see “Maintenance”). Short circuit button The short circuit button [2] turns off the engine. When pressing this button, the ignition circuit is short-circuited. Filler cap To open the filler cap: Turn the filler cap 45 ° counter-clockwise. To close the filler cap: Put the filler cap on and turn it 45 ° clockwise. OFF ON 1 A 2 3 ENGLISH 7 OPERATION INSTRUMENTS » Choke If you pull the choke button [1] out as far as possible, a bore in the carburetor will be opened through which the engine may take in additional fuel. The result is a “fat” fuel-air mixture of the type needed for cold starts. To deactivate the choke, push the choke button back into its basic position. Shift lever The shift lever is mounted on the left side of the engine. The position of the gears is shown in the illustration. Neutral is located between first and second gear. Kickstarter (250 SX-F) The kickstarter is mounted on the right side of the engine. Its upper part can be swivelled. Foot brake pedal The foot brake pedal is located in front of the right footrest. Its basic position can be adjusted to your seat position (see maintenance work). Plug in stand The plug-in stand can be attached to the wheel spindle on the left side of the motorcycle

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HARLEY DAVIDSON SOFTAIL ULTIMA STYLE ADJUSTABLE SHOCKS MANUAL

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

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ADJUSTING SPRING PRELOAD (STIFFNESS). NOTE: Shocks typically come set at their loosest (softest) setting. Adjustment range is approximately 4 full rotations. Step 1: Loosen preload adjustment locknut. (see fig. 1) Step 2: Using supplied special tool with a 3/8 ratchet, turn adjusting plate clockwise to stiffen preload & counter-clockwise to loosen preload. (see fig. 2) Step 3: Once preload has been set, lock down preload adjusting nut using blue (med strength) thread locker ADJUSTING RIDE HEIGHT. NOTE: Extending shock assembly lowers frame/fender height. Shortening shock assembly will raise frame/fender height. NOTE: Always check clearances during & after adjusting ride height. Step 1: Loosen ride height adjusting locknut. (see fig. 3) Step 2: Rotate end to desired height. Always leave at least 1 inch of threads engaged in the female threaded shaft. (see fig. 4) Step 3: Lock down ride height adjusting locknut using blue (med strength) threadlocker. (see fig. 5) Step 4: After adjusting ride height on both shocks, verify that they are the same length by measuring from their mounting points. (see fig. 6)

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