How To Adjust the Accelerator Pump On the 40mm Mikuni Carburetor

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Filed Under (Yamaha) by admin on 21-01-2012

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1) The “blue” colored screw in the image is the duration adjustment screw. Underneath the head of the screw is a lock nut and the bracket arm that the screw is threaded into. To decrease the amount of fuel squirted the adjustment screw is turned “clockwise” or in. To increase the amount of fuel squirted the adjustment screw is turned “counter clockwise” or out. To get the max, amount of decrease remove the screw and take the lock nut off of the screw. Then replace the screw into the cam arm, then replace the lock nut underneath the arm on the screw. this gives you another 3/32″ of an inch in which the screw can be screwed in.
2) Turn the adjustment screw fully clockwise or IN. Start your engine, Blip your throttle open, if the engine stutters, (hesitates), it is not getting enough fuel so turn the screw counter clockwise to increase the amount of fuel squirted from the accelerator pump into the carburetor. Keep blipping the throttle and adjusting the screw till the carburetor starts to cough. Stop here and turn the screw back in till the coughing stops. Tighten down the lock nut. This should give you the best throttle response with the least amount of coughing and backfiring out the carburetor. Timing Adjustment Screw This is the “Green” colored screw just above the Blue duration adjustment screw. The” Mucker” said it best,,,,, This upper screw adjusts the “timing” of the squirt. By altering it’s setting, you can advance or delay the onset of the fuel squirt. But probably, it won’t have to be touched

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Toyota Electronic Throttle Control Investigation

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Filed Under (Toyota Manuals) by admin on 14-06-2011

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The purpose of this research study was to contribute to a better understanding of electronic throttle control system malfunctions and the fail-safe detection capabilities of selected vehicles equipped with electronic throttle controls. More specifically, this research primarily examined the fail-safe detection capabilities of electrical circuitry
designed to prevent sudden or unintended acceleration of electronic throttle controlled vehicles manufactured by Toyota Motor Co. The Accelerator Pedal Position

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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CCS- 100 ELECTRONIC CRUISE CONTROL INSTALLATION MANUAL

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Filed Under (Tips and Review) by admin on 10-11-2010

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UNDER HOOD INSTALLATION Connecting the Cruise Control Cable to the Throttle NOTE: Prior to attaching servo cable to throttle, locate an accessible area to mount the cruise control servo, but do not mount it. Leave the servo in this area (unmounted) and route cable to throttle attachment area. CAUTION: Attach the cruise control cable so that it parallels the existing throttle cable as nearly as possible. Choose a mounting method from the figures below: Attachment area for securing cable Bead Chain Coupling Sleeve (#23) Bead Chain Coupling (#24) 3 BEAD CONNECTOR FIG. 6 FIG. 7 FORD LINKAGE ADAPTOR Rubber Ring WIRE LOOP FOR PULLEY Carburetor Existing Snap-On Throttle Arm On Vehicle FIG. 2 SNAP-ON THROTTLE ARM MOUNT FIG. 3 CLAMP-ON THROTTLE ARM MOUNT Determine a suitable point on the throttle linkage to mount the cable connector. The mounting point chosen should have between 1-1/2″ to 2″ total linkage travel. It must operate smoothly by hand. There should be at least 5 beads between the throttle connector and servo cable end. The cable must pull in a straight line from throttle linkage. Some vehicles that do not have enough total linkage travel have to be connected at the accelerator pedal. The bead chain and servo cable end must be inserted into the bead chain connector. Then the bead chain coupling sleeve must slide over bead chain connector to insure that the end will not hang in the connector. FIG. 1 Cable Bead Chain Eyelet Connector (#25) Pull off Throttle Arm and Insert Bead Chain Connector between it and Carburetor Arm. Be sure additional thickness of adaptor does not bind linkage. 20° Bead Chain Eyelet Connector (#25) Cable Must Be within 20° of same angle as Throttle Rod Throttle Cable Throttle Wire Loop (#29) Barrel Wire Adaptor (#30) WIRE BARREL FOR PULLEY FIG. 5 FIG. 4

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