1. GENERAL INFORMATION                                                                DINK 50/125


 POOR PERFORMANCE (AT HIGH SPEED)

 Inspection/Adjustment                    Symptom                      Probable Cause


 Check ignition timing



                                                                      Faulty ignition unit
                           Correct timing       Incorrect timing
                                                                      Faulty A.C. generator


 Check valve clearance


                                                                      Improperly adjusted valve
                         Correctly adjusted    Incorrectly adjusted   clearance
                                                                      Worn valve seat


 Check fuel pump for
 fuel supply

                                                                      Empty fuel tank
                                              Fuel flow restricted    Clogged fuel tube or filter
                          Fuel flows freely                           Faulty fuel pump
                                                                      Cracked fuel pump vacuum tube

 Check carburetor jets
 for clogging

                            Not clogged              Clogged          Clean and unclog



 Check valve timing


                               Correct               Incorrect        Cam timing gear aligning marks
                                                                      not aligned

 Check valve spring
 tension


                           Not weakened             Weak spring       Faulty spring




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