agility 50 3 Workshop-manual : Page 56

          5. FUEL SYSTEM                                                                  AGILITY 50


 TROUBLESHOOTING
 Engine is hard to start                            Misfiring during acceleration
 · No spark at plug ( Section 15)                   · Faulty ignition system
 · Compression too low                              · Lean mixture
 · No fuel to carburetor                            · Faulty accelerating pump
   -Clogged fuel filter                             Engine idles roughly, stalls or runs poorly
   -Restricted fuel line                            · Clogged fuel system
   -Faulty float valve                              · Ignition malfunction
   -Incorrectly adjusted float level                · Rich or lean mixture
 · Engine flooded with fuel                         · Contaminated fuel
   -Clogged air cleaner                             · Intake air leak
   -Fuel overflowing                                · Incorrect idle speed
 · Intake air leak                                  · Incorrectly adjusted pilot screw
 · Contaminated fuel                                · Clogged idle system or auto bystarter passages
 · Faulty auto bystarter                            · Incorrectly adjusted float level
 · Clogged idle system or auto bystarter passages   Lean mixture
 Rich mixture                                       · Clogged fuel jets
 · Faulty auto bystarter                            · Faulty float valve
 · Faulty float valve                               · Float level too low
 · Float level too high                             · Clogged fuel system
 · Clogged air jets                                 · Intake air leak
 · Dirty air cleaner                                · Improper vacuum piston operation
 · Flooded carburetor                               · Improper throttle operation
 Backfiring at deceleration
 · Lean mixture in idle system
 · Improper air cut-off valve operation




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