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techtalk:ref:carb01w [2019/09/22 19:46]
hippysmack [Basic Keihin BD (Screaming Eagle or Flowmaster) Information]
techtalk:ref:carb01w [2019/09/22 20:04]
hippysmack [Screaming Eagle EVO XLH Hi-Flo Carb and Air Cleaner Kit (29081-90C)]
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 |27895-87 |70 |        |27895-87 |70 |       
 |27897-78 |72 |  |27897-78 |72 | 
- ((http://​xlforum.net/​forums/​showthread.php?​t=132922)) ​    +((http://​xlforum.net/​forums/​showthread.php?​t=132922))
  *in carburetor \\                                                                ​  *in carburetor \\                                                                ​
  
 +===== Starting =====
 +**Choke**: \\
 +The carburetor choke knob (enrichenor) should be pulled up for initial or cold starting. \\
 +Push the knob down as soon as the engine is warm enough to run without stumbling. \\
 +You can ride with the knob up for the first few blocks.
 +===== Tuning =====
 +**Air / fuel mixture**: \\
 +The air/fuel mixture screw is set initially at one full turn outward from the full in position. \\
 +Do not set idle speed or smoothness with this screw. The screw must be set within 1/8 turn of the one full turn position for optimum performance.\\
 +**Engine Idle Speed**: \\
 +Idle speed is set with the throttle stop screw. Set engine idle speed at 1000 - 1150 RPM with engine at normal operating temperature. \\
 +**Accelerator pump**: \\
 +If your engine has an off-idle hesitation, you may have to adjust the accelerator pump stroke. \\
 +Do this by adjusting the accelerator pump screw after all other adjustments have been made. \\
 +Off-idle hesitation can be caused by either a too lean or too rich pump stroke. So you will have to determine which way to turn the screw by experimenting. \\
 +Turn the screw 1/4 turn at a time. \\
 +**Jetting**:​ \\
 +If your engine is relatively unmodified, it will run well with the jets that come in the carburetor. \\
 +Depending on the level of performance modifications,​ it may run better with different size jets. \\
 +See the jet chart above. \\
 +NOTE: \\
 +All the carburetor jets are slightly rich. If the engine runs too rich just off idle, use a #65 slow speed. \\
 +If the engine is rough or jerky at 55-65 mph, remove the blank intermediate speed jet and install a
 +#80. \\
  
 +Markings on the one below include: Keihin, 27F8, HG13, Harley Davidson and Screaming Eagle. ((Stardog of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1976237)) \\
 {{:​techtalk:​ref:​carb:​se_carb_1_by_stardog.jpg?​direct&​300|}} ((photo by Stardog of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1976237)) {{:​techtalk:​ref:​carb:​se_carb_3_by_stardog.jpg?​direct&​300|}} ((photo by Stardog of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1976237)) \\ {{:​techtalk:​ref:​carb:​se_carb_1_by_stardog.jpg?​direct&​300|}} ((photo by Stardog of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1976237)) {{:​techtalk:​ref:​carb:​se_carb_3_by_stardog.jpg?​direct&​300|}} ((photo by Stardog of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1976237)) \\