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TVS – 811 Series Trap Valve Station Installation, Operation and Maintenance Instructions

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Filed Under (TVS) by admin on 29-04-2012

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In a piston valve, the control of stem and seat leakage is obtained by tightness of the valve sealing rings to the body and valve plug. The bonnet compresses the valve sealing rings against the body and the valve plug. Flexible disc springs automatically assure a tight seal by exerting pressure on the valve sealing rings, keeping them compressed. Opening and Closing the TVS Isolation Valves The isolation valve begins to stop flow when the valve plug enters the lower valve sealing ring. When the isolation valve is completely closed, the valve plug is in contact with the full height of the valve sealing rings, ensuring the best possible seal. In fact, there is no advantage to be gained in torqueing the valve closed. Armstrong recommends that after closing the isolation valves completely, the handwheel should be turned back one half turn. This makes it easy to re-open the valve by avoiding metal to metal seizure. Troubleshooting – Isolation Valves A piston valve will retain its leak tightness for several years without maintenance. In severe service, such as rapid heating and cooling, some field maintenance may be required. Depending on the problem, these simple steps may help: ! ! ! ! ! Isolation Valve leaks, when the valve is closed . First, Check to make sure the valve is actually closed . Check to see if bonnet is seated on the body, if not, tighten the bonnet nuts until the bonnet seats. This recompresses the valve sealing rings against the body and the valve plug. If valve continues to leak, replace the isolation valve assembly

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CYLINDER HEAD REPAIR MANUAL

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Filed Under (Tips and Review) by admin on 28-10-2010

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ADJUSTABLE CYLINDER HEAD STAND Head can be rotated 360 degrees. Stays in any position using a simple locking mechanism. Use on twin or four cylinder heads. Shipping weight: 14 lbs. Adjustable length-10-1/2″ to 20-1/2″ long x 14″ width x 10-3/4″ high. 35-8602 Cylinder Head Stand VALVE GUIDE DRIVERS Use for removal and installation of valve guides into cylinder head. Available in the following sizes: 35-8418 4.5mm YM-4116 35-8416 6mm YM-4064-A 35-8417 5mm YM-4097 35-8414 7mm YM-1225-A 35-8408 5.5mm YM-1122 35-8413 8mm YM-1200 VALVE GUIDE DRIVER SET (REMOVE & REPLACE) Designed for speed and accuracy, this eleven piece set provides the right tool for the job. Driver set includes two valve guide drivers (5.5mm and 6.6mm), four valve guide installers, one cutter, three cutter pilots (5.5mm, 6.6mm, and 7.7mm) and one tap handle extension bar. 35-9445 Valve Guide Driver Set YAMAHA VALVE GUIDE INSTALLERS These installers are used for installation of Yamaha shoulder less valve guides to a specific depth into the cylinder head. To use, position onto the valve guide and drive into the cylinder head until installer makes contact with cylinder head surface. Note: Must use with Valve Guide Driver. Available in the following sizes: 35-8439 4.5mm YM-4117 35-8437 5.0mm YM-4098 35-8419 5.5mm YM-4015 35-8435 6mm YM-4065-A 35-8423 7mm YM-4017 VALVE GUIDE REAMERS Reaming valve guides after installation assures a proper valve stem to valve guide fit. Available in the following sizes: 35-3829 4.5mm YM-4118 35-3851 7mm YM-1227 35-3836 5.5mm YM-1196 35-3852 8mm YM-1211 35-3847 6mm YM-4066 CLOVER VALVE LAPPING COMPOUND KIT The world famous green can with the four leaf clover. For seating valves, mating gears, and sharpening. Sold as a kit with coarse 120 grit (roughing) and 280 fine grit (finishing). 35-0309 Clover Valve Lapping Compound VALVE LAPPING TOOL The ultimate vacuum stick for insuring perfect surfaces on valves and valve seats. Interchangeable cups make unit suitable for use with virtually any size valve. Set includes vacuum stick, 3/4″ and 1/4″ diameter rubber cups. 35-8998 Valve Lapping Too

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1998 YAMAHA YZF-R6 SERVICE MANUAL

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Filed Under (Yamaha) by admin on 25-11-2010

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Camshafts Drive system Camshaft cap inside diameter Camshaft journal diameter Camshaft-journal-to-camshaftcap clearance Intake camshaft lobe dimensions Measurement A Measurement B Measurement C Exhaust camshaft lobe dimensions Measurement A Measurement B Measurement C Max. camshaft runout Chain drive (right) 23.000 23.021 mm 22.967 22.980 mm 0.020 0.054 mm 33.05 33.15 mm 25.14 25.24 mm 7.81 8.01 mm 32.55 32.65 mm 25.07 25.17 mm 7.38 7.58 mm 0.08 mm 33.0 mm 25.09 mm 32.50 mm 25.02 mm 0.06 mm
2-5 ENGINE SPECIFICATIONS SPEC Head Diameter Face Width Seat Width Margin Thickness Item Standard Limit Timing chain Model/number of links Tensioning system RH2015/120 Automatic Valves, valve seats, valve guides Valve clearance (cold) Intake Exhaust Valve dimensions 0.11 0.20 mm 0.21 0.30 mm Valve head diameter A Intake Exhaust Valve face width B Intake Exhaust Valve seat width C Intake Exhaust Valve margin thickness D Intake Exhaust Valve stem diameter Intake Exhaust Valve guide inside diameter Intake Exhaust Valve-stem-to-valve-guide clearance Intake Exhaust Valve stem runout Valve seat width Intake Exhaust 24.9 25.1 mm 21.9 22.1 mm 1.14 1.98 mm 1.14 1.98 mm 0.9 1.1 mm 0.9 1.1 mm 0.6 0.8 mm 0.6 0.8 mm 3.975 3.990 mm 3.960 3.975 mm 4.000 4.012 mm 4.000 4.012 mm 0.010 0.037 mm 0.025 0.052 mm 0.9 1.1 mm 0.9 1.1 mm 1.6 mm 1.6 mm 0.5 mm 0.5 mm 3.950 mm 3.935 mm 4.042 mm 4.042 mm 0.08 mm 0.1 mm 0.04 mm 1.6 mm 1.6 mm
2-6 ENGINE SPECIFICATIONS SPEC Item Standard Limit Valve springs Free length Intake (inner) (outer) Exhaust Installed length (valve closed) Intake (inner) (outer) Exhaust Compressed spring force (installed) Intake (inner) (outer) Exhaust Spring tilt Intake (inner) (outer) Exhaust Winding direction (top view) Intake Exhaust 37.0 mm 38.4 mm 41.7 mm 30.0 mm 32.5 mm 36.1 mm 69 79 N (7.0 8.0 kgf) 114 132 N (11.6 13.4 kgf) 160 184 N (16.3 18.7 kgf) Clockwise Clockwise 35 mm 36.5 mm 39.5 mm 2.5/1.6 mm 2.5/1.7 mm 2.5/1.8 mm Cylinders Cylinder arrangement Bore stroke Compression ratio Bore Max. taper Max. out-of-round Forward-inclined, parallel 4-cylinder 65.5 45.5 mm 12.4 : 1 65.50 65.51 mm 0.05 mm 0.05 mm

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SUZUKI GSX-R1000K7 IDLE SPEED CONTROL VALVE REPLACEMENT

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Filed Under (Suzuki) by admin on 26-11-2010

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1. Check the repair status by checking the Vehicle History in the Suzuki Connect Service Menu. If the repair needs to be performed to the motorcycle, you will see the message “CAMPAIGN NOT YET PERFORMED” displayed and the ISC valve will need to be replaced. Refer to the replacement procedure in this bulletin. 2. Inspect the right side of the frame head tube for an identification punch mark located at the end of the Vehicle Identification Number. If a punch mark is presentthe recall repair has already been performed. NOTE: A punch mark may already be present at the beginning of the Vehicle Identification Number if the Generator Rotor Replacement campaign (#2M97) has been completed. 1. Remove the front seat and disconnect the battery. (Refer to Service Manual, Page 8-8) 2. Lift up the fuel tank. (Refer to Service Manual, Page 5-3) 3. Remove the air cleaner box. (Refer to Service Manual, Page 5-14 4. Remove and replace the ISC valve. (Refer to Service Manual, Page 5-25) NOTE: Since the ECM is also being replaced there is no need to perform the ISC valve preset operation.

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2003 SUZUKI SV 650 FUEL SYSTEM AND THROTTLE BODY SERVICE MANUAL

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Filed Under (Suzuki) by admin on 26-02-2011

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FUEL PUMP The electric fuel pump is mounted at the bottom of the fuel tank, which consists of the armature, magnet, impeller, brush, check valve and relief valve . The ECM controls its ON/OFF operation as controlled under the FUEL PUMP CONTROL SYSTEM . When electrical energy is supplied to the fuel pump, the motor in the pump runs and together with the impel- ler . This causes a pressure difference to occur on both sides of the impeller as there are many grooves around it . Then the fuel is drawn through the inlet port, and with its pressure increased, it is discharged through the outlet port . The fuel pump has a check valve to keep some pressure in the fuel feed hose even when the fuel pump is stopped . Also, the relief valve is equipped in the fuel pump, which releases pressurized fuel to the fuel tank when the outlet of the fuel pressure has increased up to 450 -600 kPa (4.5- 6.0 kgf/cm2,64- 85 psi) . Relief valve Brush , ∎ I,’ Check valve Magnet L Armature When the impeller is driven by the motor, pressure differential occurs between the front part and the rear part of the blade groove as viewed in angular direction due to fluid friction . This process continuously takes place causing fuel pressure to be built up . The pressurized fuel is then let out from the pump chamber and discharged through the motor section and the check valve . FUEL SYSTEM AND THROTTLE BODY 5- 3 Inlet port I I Impeller 5-4 FUEL SYSTEM AND THROTTLE BODY FUEL PRESSURE REGULATOR The fuel pressure regulator consists of the spring and valve . It keeps absolute fuel pressure of 300 kPa (3.0 kgf/cm2,43 psi) to be applied to the injector at all times . When the fuel pressure rises more than 300 kPa (3 .0 kgf/cm2, 43 psi), the fuel pushes the valve in the regulator open and excess fuel returns to the fuel tank . 90 Spring 02 Valve FUEL INJECTOR The fuel injector consists of the solenoid coil, plunger, needle valve and filter . It is an electromagnetic type injection nozzle which injects fuel in the throttle body according to the signal from the ECM. When the solenoid coil of the injector is energized by the ECM, it becomes an electromagnet and attracts the plunger. At the same time, the needle valve incorporated with the plunger opens and the injector which is under the fuel pressure injects fuel in conic dispersion . As the lift stroke of the needle valve of the injector is set constant, the volume of the fuel injected at one time is determined by the length of time during which the solenoid coil is energized (injection time)

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Lilac LS-18 Motorcycle Maintenance Standards

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Filed Under (Lilac) by admin on 25-11-2010

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CYLINDER AND CYLINDER HEAD MAINTENANCE ITEM STANDARD REPAIR LIMIT METHOD REMARKS Cylinder Bore 54 -0.01 54.1 Boring After boring honing should be performed Ovality 0.01 0.05 Boring After boring honing should be performed Taper 0.01 0.05 Boring After boring honing should be performed Oversize 0.25 steps 55 max. Do R and L cylinders at same time / 4 steps Valve Seat Width 0.8 – 1.0 1.3 Adjust Use a cutter Angle 45∞ Combustion Chamber Volume 18.2cc -0.5cc Remove carbon if heavy accumulation Compression Ratio 7.8:1 Head Gasket Thickness 1.0 Cylinder Head Nut Torque 3.0 kg/m (22 ft.-lb.) Out standard Adjust 8mm nut Intake and Exhaust Ports Port Wall SurfaceMust be smooth Remove carbon Intake and Exh. Valve GuidesOD 12 +0.09 +0.1 ID 7 +0.01 -0.0 7.06 Exchange Intake Valve Stem Diameter 7 -0.02 -0.03 6.9 Exchange Head Thickness 1 0.7 Exchange Exhaust Valve Stem Diameter 7 -0.02 -0.03 6.9 Exchange Head Thickness 1 0.7 Exchange Intake and Exhaust Valve Seat Face Width Range 0.8~1.0 1.3 Use valve seat cutter Intake Valve Guide Clearance 0.02~0.04 0.08 Replace valve or guide Exhaust Valve Guide Clearance 0.06~0.08 0.12 Replace valve or guide Valve Spring (Large) Installed Load 10.2 kg 8.7 kg Replace Fitted length 31.5 Free Length 36.5 34.7 Replace Tilt 1.5/100 3/100 Replace Valve Spring (Small) Installed Load 5.48 kg 4.65 kg Replace Fitted length 29.5 Page 4 of 10 Free Length 33.5 31.8 Replace Tilt 1.5/100 3/100 Replace Rocker Arm ID 12 +0.00 +0.02112.07 Replace Rocker Shaft OD 12 -0.06 -0.024 11.92 Replace Arm and Shaft Clearance 0.045~0.006 0.10 Replace arm or shaft Tappet Clearance 0.05 Out standard Adjust Measure cold at TDC Rocker Arm Ball Surface 1.8îR -0.006 -0.024 Replace if severe wear Pushrod Bend 0.1 0.5 Straighten Over 100mm (2) CRANKSHAFT, PISTON AND CONROD MAINTENANCE ITEM STANDARD REPAIR LIMIT METHOD REMARKS Piston OD @ Top 53.65 -0.02 Max Diameter 53.95 -0.015 53.85 Replace Ovality 0.1 Piston and Cylinder Clearance 0.04~0.05 0.15 Replace Piston Ring Groove Clearance 0.03~0.07 0.10 Replace Piston Oversize Step 0.25 4 steps Top Ring and 2nd Ring Thickness 2 -0.01 -0.03 1.92 Replace Width 2.5 -0.01 0.55kg Tension 0.85 – 1.15kg 1 Replace End Gap 0.15 – 0.35 Replace Oil Ring Thickness 3.2 -0.01 -0.03 3.12 Replace Width 2.5 -0.1 Tension 1.0~1.3kg 0.65kg Replace End Gap 0.15~0.35 1 Replace Ring Gap Position 120∞ 3 equal spacesOut standard Adjust Avoid Piston Pin Axis Ring Oversizes 0.25 steps 4 steps Piston Pin OD 15 -0.0 +0.006 14.95 Replace Pin Hole in Piston ID 15 +0.012 -0.015.05 Replace Pin and Piston Clearance -0.006 ~ +0.012 0.06 Replace Hand push fit piston at 100∞C Conrod Small End Bush ID 15+0.027+0.016 15.07 Replace bush Conrod and Piston Pin Clearance 0.01~0.027 0.07 Replace Crankpin OD 24.94 +0.0+0.0124.90 Replace Crankpin Roller OD 5 (+0.001+0.003) Refer to conrod ID Replace 3Sizes; 52 per assembly for selective fit 5 (+0.0 -0.002) 5 (-0.003 -0.005) Conrod ID 34.95+0.03+0.02435.02 Axial Play 0.2~0.4 0.5 Adjust Radial Play 0.026~0.036 0.06 Replace

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Ural carburetors Installation and idle adjustment

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Filed Under (Ural) by admin on 02-11-2010

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1. First you must adjust the idle. It is acceptable per the manual to adjust the idle by using the idle adjust screws (11). This usually involves screwing them then backing out 1 to 1.5 turns. Or you can adjust looking at the sliders 2. If installing the carburetors: a. Remove the cover (2) b. Reomve the slider (3) c. Place the throttle cable through the guide (18) with the spring (4) on the cable. d. Route the cable through the slide catch (6) e. Insert the slide assembly into the chamber and make sure it easily slides up and down. Direct the needle (8) into the opening of the diffuser (angled side visible). f. Screw assembly together and verify via throttle movement that slide moves freely. Attach fuel delivery lines to (12). 3. Using the idle set screw (11) raise the slider so the lower edge is 1-2 mm. 4. Assemble to engine using the proper gaskets (paper – felt – paper). 5. Using the locknut (26) adjust the free play of the throttle cable (2-3 mm) 6. Adjust the idle mixture screw – turn in completely then out 1 to 1.5 turns 1. Remove one of the spark plug caps, and with the cap shorted, adjust (11) to decrease RPM’s to a point of being minimally steady. 2. Adjust the mixture (15) out until RPM’s decrease. Turn in until RPM’s increase slightly. Then turn in screws ¼ to 1/3 revoultion. 3. Do the same for the second carburetor with the first spark plug cap shorted. 4. With both cylinders, adjust each idle (11) on each carburetor the same amount each until it’s at a steady, minimal RPM. Use small changes. (at this point you can use your airflow tool to check). 5. Sharply increase, then decrease throttle. Then engine must return to low RPMs smoothly. If the engine goes below limits, readjust (11) from step 4. Synchronization of the K68 Note: Rather than using the opposite cylinder shorted to test the pull of the live cylinder carburetor, you can use something like a Twinmax connected to the test ports (27 Fig 1). Or, if you have a model without these ports, use a Synchrometer (Appendix 2) held against the face of the carburetor. These tools merely show airflow passing through each carburetor (which is dependent on the position and wear on the slide). If using these tools, it’s not necessary to do the following steps. You wil want to use a throttle guide (Appendix 1), to show airflow at various throttle settings. Using the flow meter of your choice make sure each carburetor is the same at the various throttle settings. 1. Place the motorcycle on the center stand ensuring the rear wheel is suspended 2. Make sure you have large area to work with (safety issues here) 3. Shift into the highest gear with the engine running 4. Short one spark plug cap to the cylinder (using a nail or something in the fins) 5. Increase the speed to 40-50 km/hr 6. Fix the throttle using the throttle (maybe using a throttle stop screw under the throttle housing). 7. Reconnect other cylinder and using the opposite carburetor determine the speed which should be the same as the first. 8. Adjust the position of this slide to achieve the referenced speed using the locknut at the top of the carburetor.

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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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Triumph Bonneville Tuning Manual

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Filed Under (Triumph) by admin on 20-11-2010

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1. The Float The float bowl acts as a fuel reservoir to meet engine demand. The float is hinged on a pin in the float boss. It rises and falls with the fuel level in the float bowl. The small metal tang integrated in the plastic float supports the float valve, also known as the float needle. As the fuel in the float bowl rises, the float valve is pushed into the valve seat, until it’s high enough to shut off the fuel flow to the bowl. As fuel is used the level in the bowl drops lowering the float which pulls the float valve from its seat, and fills again. Adjusting the height of the float has a big effect on the mixture as a low or high float level makes it harder or easier for the vacuum to suck fuel into the venturi. Differing float levels cause an imbalance which may be perceived as vibration. 2. The Choke This system is referred to as the choke. But that’s a misnomer. When you pull the choke knob, what you’re doing is retracting a plunger that opens a tube connected to the starter jet, allowing additional fuel to enter the venturi just below the vacuum hose nipple. It supplements the pilot system at start up. 3. The Pilot System The primary purpose of the pilot system is to supply the mixture at idle. It continues to supply fuel throughout the entire throttle range, but after about 1/8 throttle is reached the main system starts to put out more of the total mixture, up to full throttle. By adjusting the idle with the big screw on the left side of the carburettors the position of the butterfly is altered, so exposing one or more of the four small holes that are drilled into the venturi, (leading to the pilot jet) just under the butterfly valve, letting more or less air pass the butterfly. Adjusting the pilot screw that’s under the carburettor varies the amount of air premixing with the fuel before it enters the venturi. 4. The Main System Open the throttle and the cable that’s connected to the butterfly valve turns it from vertical to horizontal, so letting more air through the venturi. This increases the vacuum effect that is transferred up through the vacuum drilling in the slide to the diaphragm valve that leads to the diaphragm chamber. The top chamber is separated from the bottom by a rubber diaphragm. The bottom chamber is open to atmospheric pressure from the airbox. When the vacuum in the top chamber rises enough, the constant ambient pressure of the lower chamber helps the diaphragm valve overcome the downward force of the diaphragm spring, so it rises from the ven- turi. As the diaphragm is raised the needle is pulled out of the needle jet, exposing a thinner portion of the needle taper which allows more fuel to rise into the venturi to meet the increased engine demand. The key parts of the main system are shown in the photo below

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Daytona 675 Motorcycle Race Kit Installation Manual

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Filed Under (Triumph) by admin on 29-10-2010

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Remove the existing cylinder head gasket in line with the procedures detailed in the Daytona 675 service manual. 2. Fit the chosen race kit cylinder head gasket following the procedures detailed in the Daytona 675 service manual. Caution The use of the following race kit cylinder head gaskets will require changes to the fuelling settings. To alter fuelling settings a third party programmable control unit will be required. Item Description Qty 1 Head gasket (t = 0.65mm) 1 1 Head gasket (t = 0.60mm) 1 1 * Page 7 of 29 © Triumph Designs Ltd 2007. Cams, Valve Spring & Sprocket Kits Parts Supplied Camshaft Inlet Kit – A9618055 Camshaft Exhaust Kit – A9618056 Valve Spring Kit – A9618058 Camshaft Sprocket Kit – A9618057 Warning The race kit must be fitted as a complete set. If it is not fitted as a complete set a failure may result which could cause loss of motorcycle control and an accident. Caution The use of the Camshaft, Valve spring & Sprocket race kits detailed below will require changes to the fuelling settings. To alter fuelling settings a third party programmable control unit will be required. 5 5 4 1 3 2 4 3 Item Description Qty 1 Cam assy, inlet, race 1 Item Description Qty 2 Cam assy, exhaust, race 1 Item Description Qty 3 Valve spring, 14.4id, race12 Item Description Qty 4 Sprocket, camshaft, 34T 2 5 Socket head cap screw, Encapsulated, M6x10 4
Page 8 of 29 © Triumph Designs Ltd 2007. NOTE •The standard inlet cam is 9.25mm max lift and 258.50o duration. The race kit inlet cam is 9.25mm max lift and 268.74o duration. •The standard exhaust cam is 8.5mm max lift and 246o duration. The race kit exhaust cam is 8.5mm max lift and 262.21o duration. •The race kit valve spring must be used in conjunction with the standard spring platforms and retainers. The fitted length of the race springs is the same as the standard spring. 1. The race kit valve springs should be assembled in the same manner as the standard valve springs. Follow the procedure detailed in section 3 of the Daytona 675 service manual. Ensure the springs are installed with the close wound, colour coded end of the springs facing downwards, towards the piston. 2. The race kit camshafts should be assembled in the same manner as the standard camshafts. Follow the procedure detailed in section 3 of the Daytona 675 service manual. 3. The race kit cam sprockets should be mounted and secured to the camshafts using the slotted holes in the sprocket. The slotted holes allow adjustment of the valve timing. The circular holes in the sprockets are for Triumph service tool T3880102 and should not be used to mount the sprockets to the camshafts. NOTE •No timing marks are included on the race sprockets. Race engines will typically have different depths skimmed off the cylinder head and, therefore require specific individual timing. 4. The camshafts should be timed using cam degreeing equipment which typically consists of a degree wheel, pointer, dial indicator and piston stop. Optimum cam timing will depend on the exact specification of the engine, but a recommended starting point is 104o IMOP (Inlet Maximum Opening Point) and 104o EMOP (Exhaust Maximum Opening Point). 5. Always check the inlet and exhaust piston to valve clearance for the timing selected to use, before running the engine. You must ensure both clearances are adequate. As a guide, the standard nominal piston to valve clearance is 1.3mm inlet & 1.5mm exhaust

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