Make a note of this to use as a reference when reinstalling the pilot screw and then remove the pilot screw, spring, washer and O-ring.Ĭheck the pilot screw for wear or damage.Ĭlean the jets with cleaning solvent and blow open with compressed air. Turn the pilot screw in and carefully count the number of turns until it seats lightly. Remove the four screws and the float chamber and then remove the following:Ĭheck the float for damage or fuel in the float.Ĭheck the float valve and valve seat for scoring, scratches, clogging or damage.Ĭheck the tip of the float valve, where it contacts the valve seat, for stepped wear or contamination. Inspect the diaphragm for pin holes, deterioration or damage. Remove the two screws while holding the primer knob body and then remove the primer knob assembly and spring. Then remove the needle holder, spring, jet needle and washer.Ĭheck the vacuum piston for wear or damage.Ĭheck the diaphragm for pin hole, deterioration or damage.Ĭheck the vacuum piston for smooth operation up and down in the carburetor body.Īir will leak out of the vacuum chamber if the diaphragm is damaged in any way, even with just a pin hole. Remove the compression spring and diaphragm/vacuum piston from the carburetor body and turn the needle holder counterclockwise by using a screwdriver while pressing it in and release the holder flange from the vacuum piston. Remove the four screws with the tube clamp and the vacuum chamber cover while holding it. Air should not flow through the valve ports when the vacuum is applied, and should flow when the vacuum is not applied. Apply vacuum to the vacuum tube and the vacuum should be maintained. Remove the attaching screw and the air cut-off valve and then remove the O-rings and joint pipe. Start by removing the following from the carburetor body: Now you can remove the carburetor.Ĭheck the SE valve face for scores, scratches or wear.Ĭheck the SE valve seat at the tip of the valve for stepped wear. Loosen the throttle cable lock nut and remove the adjuster from the carburetor body, and disconnect the cable from the throttle drum. Valve nut, being careful not to damage the SE valve.
Disconnect the choke cable by turning the SE Remove the screw and the throttle drum cover and loosen the insulator band screw to remove the carburetor off the insulator. Disconnect the fuel tube and loosen the starting enrichment (SE) valve nut. Then release the carburetor heater wire from the clip and disconnect its connector if equipped. Then loosen the drain screw and drain the carburetor. Place and approved fuel container under the drain tube. To remove the carburetor start by removing the side covers and air cleaner housing. Procedures differ between all years and models and the following should not be used as an exact guide.
1984 HONDA ATC 250R CARBURETOR MANUAL
No spark at plug (faulty ignition system)īefore removing the carb download the service manual for pictures, illustrations and diagrams for assistance with these procedures. Improper starting enrichment valve operation Stop the guess work, invest in a manual and resolve the issue effortlessly.Ĭlogged starting enrichment valve circuit As you can see there are many possible causes of poor performance with your motorcycle. Some of the causes of carburetor problems are listed, again we insist on downloading the manual as it helps match the effect with the causes helping you pinpoint and diagnose the trouble spot quickly and efficiently. Poor performance (driveability) and poor fuel economy
When considering if the carburetor should be examined further check the list below to determine if you are experiencing any of these conditions.Įngine stalls, hard to start, rough idlingīackfiring or misfiring during acceleration Below are some common problems that could be associated to a malfunction with the carburetor or related parts.
0 kommentar(er)
