how to set a carburetor aprilia rs 125

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HSR Carburetor Total Kits Installation Instructions

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Filed Under (Mikuni) by admin on 31-10-2010

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Intake Manifold: 1. Install MAP sensor in Mikuni manifold (Twin Cam only). 2. Attach the Mikuni manifold to the engine. Align the manifold before tightening the bolts. The flange surface of the Mikuni manifold should be parallel with the front of the engine’s cam cover. Use a level or angle meter to check this. Tighten the manifold bolts. 3. Attach the rubber flange to the Mikuni manifold with the furnished 5/16″x3/4″ bolts and washers. Choke Cables: Mikuni & Harley-Davidson Route the cable with largest radius bends possible. Check the cable for free-play after installation. If there is no free-play, the engine may run rich and deliver poor performance or low fuel mileage. Harley Cable (Twin Cam Kits: 42-19, 45-4) : 1. Remove the Harley choke cable from the stock carb. 2. Remove the spring and plunger from the cable. 3. Remove the spring and plunger from the Mikuni. 5. Install the Mikuni spring and plunger onto the Harley choke cable. Change nothing else; be sure to use the Harley plastic nut, not the Mikuni nut (See Figure 1). Total Kit Installation Instructions The HSR series carburetors are precise yet durable instruments; however, like any other piece of fine equipment, they require correct installation and reasonable care to assure optimum performance and long life. Extra time spent during installation will pay off in both short and long term performance and reliability. This Mikuni HSR carburetor kit is designed to be a bolt-on application, and as such, is set-up and jetted properly for most applications. However, since Harley-Davidson motors are often highly modified, alternate tuning settings may be required. The Mikuni Tuning Manual helps make jetting alterations and adjustments an easy matter. NOTE: Carburetor Kits not designated as C.A.R.B. exempt, are not legal for motor vehicles operated on public highways in the state of California, or in any other states and countries where similar laws apply. WARNING NOTE: NOTE: WARNING CAUTION NOTE: NOTE: TK-2 6. Install the new assembly into the Mikuni carburetor. Be careful to only gently tighten the plastic nut. 7. Loosen the knurled plastic friction nut behind the choke knob and check for free-play (see Figure 2). Figure 1: Harley nut with Mikuni spring & plunger Figure 2: Choke cable adjustments Mikuni Cable (Evo Kits: 42-8, 45-2 & 45-3) : 1. Remove nut, spring and plunger from the Mikuni. 2. Install the nut, spring and plunger onto the cable. 3. Install the assembly into the Mikuni HSR carburetor. Be careful to only gently tighten the plastic nut. 4. Check for free-play. Adjust the cable as necessary. An optional choke cable mounting bracket is included in the Evo kits for custom installations. Carburetor Installation: 1. Insert the carb fully into the rubber flange, align with engine and tighten the clamp. 2. Slip the fuel hose onto the carburetor’s fuel fitting and secure with the enclosed hose clamp. NOTE: Some Twin Cam installations may require removal of a small amount of fin material from the cylinders to clear the float bowl. Throttle Cables The HSR carburetor uses stock 1990 and later Harley- Davidson cables. However, if your Harley is fitted with some other carburetor, you may need to purchase a set of cables. See your dealer for the correct cable set. 1. Route the throttle cables with large radius curves and so they do not interfere with other components. 2. Screw the cable adjusters together to make them as short as possible. 3. Connect the “close” cable first (see Figure 3). 4. Install the “open” cable next (see Figure 3). 5. Adjust the opening cable until the slide can be opened fully. Snug the adjuster lock nut. 6. Turn the handlebar to the right and adjust the throttle free-play with the closing cable adjuster to approximately 1/8″ (see Figure 4)

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APRILIA QUASAR 50-100-125-180 maintenance Manual

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

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CHANGING ENGINE OIL CAUTION In case of oil leakage or malfunctions, contact an Aprilia Authorised Dealer . Do not dispose of oil in the environ- ment. Dispose of engine oil – stored in a sealed container – through the nearest waste oil reclamation firm or through the supplier. Carefully read page 34 (MAINTE- NANCE) To change engien oil: ◆ Ride for a few kilometres until engine reaches the operating temperature, then stop the engine. ◆ Position a graduated container (1), under the drain plug (2). ◆ Loosen oil filler plug (4) and drain plug (2). ◆ Let oil flow out of the sump. ◆ Loosen oil filter (3) and carefully clean it. ◆ Refit the filter and tighten fully. ◆ Tighten drain plug (2) and pour recommended oil into filler plug (4), see page 58 (LUBRICANT CHART). ◆ Tighten the filler plug. CAUTION Carefully tighten filler and drain plugs and ensure oil does not leak out. Periodically check for leaks at the casing cover gasket. Do not use the vehicle with insufficient lubrication or with contaminated or unsuitable lubricants, since this would cause early wear of the moving parts and may also cause irreparable failures Fluid reservoir (1) is under rear right wheelhouse. CAUTION Position the vehicle on firm and flat ground. ◆ Make sure that the fluid contained in the reservoir exceeds the ” MIN ” mark stamped on the reservoir. MIN = minimum level. WARNING Do not use the vehicle if the braking system is leaking fluid. CAUTION Do not use the vehicle if the fluid is below the “MIN” mark. 1
27 use and maintenance Quasar 50 – 100 – 125 – 180 CAUTION Brake fluid level decreases as the brake pads wear down. Should the level be too low: ◆ Check the brake discs and pads for wear, see page 27 (CHECKING THE BRAKE PADS FOR WEAR) If the pads and/or the disc do not need re- placing: ◆ Contact an Aprilia Authorised Dealer that will top up the fluid. WARNING Check the brake for proper operation. When the brake lever has exceeding travel or if you notice a loss of braking, contact an Aprilia Authorised Dealer . The braking system may need bleed- ing. CHECKING THE BRAKE PADS FOR WEAR Carefully read page 26 (BRAKE FLUID – recommendations) , page 26 (DISC BRAKES) and page 34 (MAINTE- NANCE). Periodically check brake pad wear. The rate at which brake pads will wear depends on vehicle usage, riding style and road surface condition. Outlined below is a quick brake pad inspection procedure: ◆ Visually check between brake disc and pads, check both pads (1) looking from the bottom at the rear end. ◆ Should friction material (of even one pad only) be worn down to 1.5 mm of thickness, have both pads replaced

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SANYANG HD 125/ 200 Specifications And SERVICE MANUAL

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Filed Under (Sym) by admin on 24-11-2010

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heck and adjustment Fault condition Probable causes Loosen carburetor drain bolt to check if there is gasoline inside the carburetor Fuel supplied tom carburetor sufficient No fuel is supplied to carburetor Remove spark plug, install it into spark plug cap, and perform a spark test against engine ground. Perform cylinder compression pressure test. Check if sparks Weak sparks, no spark at all Low compression pressure or no pressure Re-start by following the starting procedures No ignition There are some signs of ignition, nut engine can not be started Remove the spark plug again and check it. Remove carburetor after 30 minutes and connect a hose onto fuel rich circuit. Then blow the hose with air Dry spark plug Wet spark plug Blowing in normal Blowing clogged 1. No fuel in fuel tank 2. Check if the pipes, fuel tank to carburetor and intake vacuum, are clogged. 3. Float valve clogged 4. Lines in fuel tank evaporation system clogged 5. Malfunction of fuel pump 6. Loosen or damaged fuel pump vacuum hose 7. Fuel filter clogged 1. Malfunction of spark plug 2. Spark plug foul 3. Malfunction of CDI set 4. Malfunction of AC generator 5. Ignition coil is in open or short circuit 6. Ignition coil leads open or short circuit 7. Malfunction of main switch 1. Piston ring seized 2. Malfunction of cylinder valves 3. Worn cylinder and piston ring 4. Cylinder gasket leak 5. Sand hole in compression parts 1. Malfunction of throttle valve operation 2. Air sucked into intake manifold 3. Incorrect ignition timing 1. Fuel level in carburetor too high 2. Malfunction of throttle valve operation 3. Throttle valve opening too wid

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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Honda CARBURETOR ADJUSTMENT TOOLS

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Filed Under (Honda) by admin on 17-12-2011

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K&L CARBURETOR ADJUSTMENT WRENCHES These tools use tough and accurate bevel gear actuation instead of cable for professional use. The aluminum handle includes index marks for accurate tuning. Sold each. Three types available: 35-9653 Slot-type Pilot Screw Adjustment Wrench for Kawasaki/Suzuki/Yamaha 35-9658 Slot-type Pilot Screw Adjustment Wrench with longer tip for Kawasaki/Suzuki/Yamaha 35-9650 D-type Keihin Pilot Screw Adjustment Wrench for Honda 90-DEGREE 1/4″ HEX DRIVER This gear driven, 1/4″ hex driver set is made of high-grade aluminum and stainless steel. Strongest tool of it’s type on the market. Designed for use on hard-to-reach pilot air screws on inline fours. Can be used with any 1/4″ or 6mm hex bits. 35-7820 90-Degree 1/4″ Hex Driver Set: Includes straight slot, phillips, d-shape pilot screw bit, 6mm hex jet bit & 1/4″ – hex – 1/4″ drive bit. FCR CARB TOOL Set includes three bits – 6mm hex for main jets, long reach straight slot for pilot jets and 3mm allen for float bowl removal. Longer bits make this set ideal for reaching into recessed cavities when adjusting Keihin FCR carburetors. Sold as a set. 35-7978 FCR Carb Tool 12″ DRILL BIT For removal of carburetor plug. (mixture screw plug) 1/8″ bit x 12 inch length. 35-1186 YM-33217-16 JET DRIVER 35-2270 Perfect for removal of jets from small recessed passages

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2011 APRILIA RS4 125 Engine and transmission Specifications

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Filed Under (Aprilia) by admin on 24-11-2010

Engine type: 1 cylinders, 4-stroke, Single
Displacement: 125 cc (7.64 cubic inches)
Bore × stroke: 58 mm × 47 mm (oversquare – shortstroke)
Cooling system: Water cooled
Power: 16.04 HP (11.8 kW)
Throttle: Cable operated
Valves
Valve train: DOHC, variable
Valves per cylinder: 4
Fuel and ignition
Sparks per cylinder: 1
Fuel supply system: Fuel injection
Ignition type: Digital CDI
Compression: 12.5:1
Engine mounting: Transverse
Lubrication system: Wet sump
Gear box: Manual 6-speed
Clutch: Wet, multiple discs, cable operated
Final drive: Chain
Starter: Electric
Dimensions
Physical measures
Length: 1953 mm
Width: 740 mm
Height: 1138 mm
Wheel base: 1350 mm
Seat height: 820 mm
Weight
Curb weight: 120 kg

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Aprilia Sportcity One 125 Technical Specifications

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Filed Under (Aprilia) by admin on 06-11-2010

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Engine Single cylinder 4-stroke. Forced air cooling. 2 valve head with overhead camshaft. Fuel Unleaded petrol. Bore and stroke 57 x 48.6 mm. Displacement 124 cc. Compression ratio 12:11 (125 cc). Maximum power 7.0 kW (9.52 HP) at 8,000 rpm. Max torque 10.04 Nm at 7,000 rpm. Fuel system Carburettor, Ø 26 mm. Ignition Electronic inductive discharge ignition with variable advance. Starting Electric. Alternator 300 W. Lubrication Wet sump. Forced circulation with mechanical pump. Gearbox Automatic variator. Clutch Automatic centrifugal dry clutch. Primary drive V belt. Final drive Gearbox. Frame Single cradle frame in high strength steel tube. Front suspension Hydraulic telescopic fork with 32 mm stanchions. Wheel travel 85 mm. Rear suspension Engine unit acting as swingarm. Single hydraulic shock absorber with adjustable spring preload. Wheel travel 84 mm. Brakes Front: 220 mm stainless steel disc with twin piston floating caliper. Rear: 140 mm drum. Wheels Light alloy. Front: 3.00 x 14″. Rear: 3.50 x 14″. Tyres Tubeless. Front: 120 / 70 x 14″. Rear: 120 / 70 x 14″. Dimensions Overall length: 1950 mm. Overall width: 740 mm. Wheelbase: 1358 mm. Seat height: 775 mm. Fuel tank Capacity 7.5 litres (including 1.5 litre reserve)

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APRILIA MOJITO 50-125-150 workshop manual

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Filed Under (Aprilia) by admin on 27-11-2010

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FUEL DANGER Fuel used to drive internal combustion engines is highly inflammable and may become explosive under certain conditions. It is best to refuel and carry out maintenance in well ventilated places with the engine switched off. Do not smoke during refuelling or near fuel fumes. Avoid all contact with naked flames, sparks, or any other source that may cause ignition or explosion. Also avoid allowing the fuel to spill out of the filler cap as it could catch fire on contact with the very hot surfaces on the engine. Should fuel be spilled accidentally check that the area is completely dry before starting up the vehicle. The fuel expands when subjected to heat or the sun’s rays. The fuel tank should therefore never be filled to the brim. Close the filler cap carefully on completing refuelling. Avoid the fuel coming into contact with your skin, inhaling vapours, ingestion and siphoning from one container to another using a hose. DO NOT DISPOSE OF THE FUEL INTO THE ENVIRONMENT. KEEP AWAY FROM CHILDREN. Only use super lead-free petrol, with a minimum octane rating of 95 (N.O.R.M.) and 85 (N.O.M.M.). LUBRICANTS DANGER Adequate lubrication of the vehicle is essential to guarantee the safety of the vehicle. Failure to keep lubricants at sufficiently high levels or the use of inadequate, new and clean lubricants may cause the engine or gearbox to seize, resulting in accidents, serious injury or death. Gearbox oil may cause serious harm to your skin if handled for long periods of time and on a daily ba- sis. We recommend washing your hands carefully after having handled this oil. Do not dispose of the oil into the environment. Deliver this oil to the nearest collection company for spent oil or the supplier, or have them collect it. WARNING When putting oil into the vehicle be very careful not to spill any. Immediately clean off any spilt oil, otherwise it may damage the paintwork on the vehicle. In addition, any oil that ends up on the tyres will make them extremely slippery, creating a dangerous situation. If an oil leak should arise, do not use the vehicle. Check and identify the cause of the leak and repair the component involved. ENGINE OIL DANGER Engine oil may cause serious harm to your skin if handled for long periods of time and on a daily ba- sis. We recommend washing your hands carefully after having handled this oil. Do not dispose of the oil into the environment. Deliver this oil to the nearest collection company for spent oil or the supplier, or have them collect it. When carrying out maintenance we recommend wearing latex gloves. FORK OIL DANGER Adjusting the setting on the shock absorbers and/or the viscosity of the oil used in them may partially change the reaction of the suspension. Standard oil viscosity: SAE 20 W. The viscosity grade may be chosen in relation to the type of set-up you want on the vehicle (SAE 5W soft, 20W rigid). These two products may be used in varying percentages in order to obtain the required reaction

APRILIA ATLANTIC 125 – 200 REPAIR/ SERVICE MANUAL

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Filed Under (Aprilia) by admin on 19-11-2010

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DISASSEMBLING THE COMPONENTS – Never use pliers or similar tools to slacken and/or tighten nuts and bolts. Always use a suitable spanner. – Mark all connections (hoses, wiring, etc.) with their positions before disconnecting them. Identify each connection using a distinctive symbol or convention. – Mark each part clearly to avoid confusion when refitting. – Thoroughly clean and wash any components you have removed using a detergent with low flash point. – Mated parts should always be refitted together. These parts will have seated themselves against one another in service as a result of normal wear and tear and should never be mixed up with other similar parts on refitting. – Certain components are matched-pair parts and should always be replaced as a set. – Keep the motorcycle and its components well away from heat sources. ELECTRICAL CONNECTORS To disconnect the electrical connector, follow the procedures below. Failure to comply with these procedures may lead to irreparable damages to the connector and the wiring as well. If present, press the special safety hooks. ENGINE OIL DANGER Prolonged or repeated contact with engine oil may cause severe skin damage. Wash your hands thoroughly after handling engine oil. Do not release into the environment. Dispose of engine oil through the nearest waste oil reclamation firm or through the supplier. Wear latex gloves during servicing. Change engine after the first 1000 km (621 mi) and then every 6000 km (3728 mi), 2.11.2. (Recommended) oil fork , see 1.8.1. FRONT FORK OIL DANGER Modifying the suspension settings or the viscosity of the front fork oil will affect its response. Standard oil viscosity: SAE 20 W. Choose the oil viscosity to determine the type of response required (SAE 5W for a softer suspension, 20W for a stiffer suspension). The two grades can also be mixed in varying solutions to obtain the desired response. F.A. or Fork have special properties, which enable them to retain virtually the same viscosity regardless of temperature to give constant damping response

HARLEY DAVIDSON BIG TWIN SPIGET MOUNT CARBURETOR INSTALLATION MANUAL

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Filed Under (Harley Davidson) by admin on 26-03-2012

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A. BEFORE INSTALLATION OF YOUR NEW ZENITH CARBURETOR, NSPECT THE RUBBER MANIFOLD SEAL FOR NICKS,CRACKS, OR DEBRIS. APPLYING A LIGHT FILM OF PETROLEUM BASED LUBRICANT AROUND THE INSIDE LIP OF THE RUBBER SEAL WILL ALLOW THE CARBURETOR TO SLIP INTO PLACE EASIER. B. BEFORE ACTUAL INSTALLATION OF UNIT INTO MANIFOLD, THROTTLE CABLES SHOULD BE HOOKED TO THETHROTTLEWHEEL.MAKESURETHATTHE PULL CABLE IS LOCATEDPROPERLY TO OPEN THE THROTTLE PLATE (IN SOME APPLICATIONS THROTTLE CABLE SLACK MAY NEED TO BE ADJUSTED FOR PROPER HOOKUP AND OPERATION) SEE FIG. #1 C. AFTER THROTTLE CABLES ARE PROPERLY HOOKED UP,UNITCAN BE INSERTED INTO MANIFOLD. MAKE SURE THAT UNIT IS FULLY SEATED. WITH CARBURETOR SEATED INTO MANIFOLD AND FUEL LINE HOOKED UP TO FUEL INLET, INSTALL CHOKE CABLE AND HOOK TO CHOKE LEVER. PLACE AIR INTAKE GASKET ON END OF CARBURETOR, NEXT PLACE INTAKE ADAPTOR OVER INTAKE GASKET. SEE FIG#2 ZENITH MOD.16P12 SPIGET MOUNT CARBURETOR -HARLEY DAVIDSON ™ BIG TWIN INSTALLATION INSTRUCTIONS FIG. # 1 FIG. # 2 D. WITH ADAPTOR IN PLACE, LOCATE THE STOCK AIR BOX OVER THE ADAPTOR, UTILIZING THE STOCK AIR BOX GASKET (THERESHOULDBENO GAPS BETWEEN ADAPTOR, AIRBOX OR CARBURETOR WHEN PROPERLY INSTALLED) STAND-OFF SPACERS PROVIDED ARE TOBEPLACEDBETWEENAIR BOX& ENGINE HEADS BEFORE INSTALLING THE VENT/RETAINING BOLTS. FOR EVALUATION ENGINES STOCK VENT BOLTS CAN BE USED WITH LARGERI.D. SPACER PROVIDED. SEE FIG#3 E. WITH AIR BOXSECURELY IN PLACE, INSTALL THE AIR FILTER COVER RETAINING BRACKET AND FILTER USING THE STOCKBOLTS, AND REPLACE AIR FILTER COVER AND SECURE WITH STOCK BOLT. SEE FIG#4 F. AFTER INSTALLATION IS COMPLETE AND FUEL FLOW HAS BEEN RE-ESTABLISHED, CHECK FOR ANY LEAKS BEFORE STARTING ENGINE. H. AFTER STARTING ENGINE, SOME ADJUSTMENTS OF IDLE AND MAIN JET MAYBE REQUIRED FOR PROPER OPERATION. AFTER ADJUSTMENTS HAVE BEEN MADE AND WITH ENGINEAT IDLE, TURN WHEEL FULLYTOLEFTANDRIGHT.ANYCHANGEIN IDLE SPEED INDICATES THROTTLE CABLES ARE TOO TIGHT AND MORE SLACK MUST BE PROVIDED.

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