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techtalk:evo:carb01f [2019/10/17 15:13]
hippysmack created
techtalk:evo:carb01f [2024/01/02 21:16] (current)
hippysmack
Line 3: Line 3:
  
 ====== Repairing a Broken Enrichener Knob  ====== ====== Repairing a Broken Enrichener Knob  ======
 +The enrichener knob is plastic and can sometimes break. \
 +If you just want to swap to another style for looks, there is no set screw to remove it as it is molded onto the pull rod. \\
 +So it'll either have to be broken or cut off. \\
 +Several options can be had to replace the knob. It can be done without removing the carb from the bike. \\
  
 +Any knob with a set screw will work as a replacement or you can find something like a large dice or mini Q-ball, drill a hole and epoxy it on. \\
 +You can go to your local home improvement store and purchase a nice looking kitchen drawer pull knob. ((Simon of the XLFORUM https://​www.xlforum.net/​forum/​sportster-motorcycle-forum/​sportster-motorcycle-intake-and-exhaust/​sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/​28235-e-z-choke-knob-removal-new-knob-install/​page3?​t=46782&​page=3)) \\
 +Enlarge the hole with a drill bit to rod and then glue it in place with epoxy. \\
  
 +{{:​techtalk:​evo:​carb:​enrichener_knob_mod_by_jrogers329.jpg?​direct&​300|}} ((photo by jrogers329 of the XLFORUM https://​www.xlforum.net/​forum/​sportster-motorcycle-forum/​sportster-motorcycle-intake-and-exhaust/​sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/​30821-choke-knob#​post1084456)) \\
  
-\\+====== Mooneyes Knob ======
  
 +This one was done with a "​Mooneyes"​ Deco Dash knob p/n SPC8425 $8.00. \\
 +The ID of the knob was originally too small so it was drilled out to fit. \\
 +The tools below were used for the replacement. \\
  
 +Before you remove the knob scribe the choke rod where it meets the knob with a nail. \\
 +This is to make sure the new knob ends up in the same place when it's pushed all the way in. \\
 +Next, a pair of metal shears were used to chip away at the plastic. Don't be in a hurry and don't tug, bend or pull on it. Just cut small pieces. \\
 +It takes a while but it will come off. Make sure to wear eye protection since the plastic will fly all over the garage when cutting on it.
 +
 +{{:​techtalk:​evo:​carb:​mooneyes_deco_dash_knob_enrichenor_knob_1_by_johnny_wolf.jpg?​direct&​300|}} ((photo by Johnny Wolf of the XLFORUM https://​www.xlforum.net/​forum/​sportster-motorcycle-forum/​sportster-motorcycle-intake-and-exhaust/​sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/​28235-e-z-choke-knob-removal-new-knob-install?​t=46782)) {{:​techtalk:​evo:​carb:​mooneyes_deco_dash_knob_enrichenor_knob_2_by_johnny_wolf.jpg?​direct&​300|}} ((photo by Johnny Wolf of the XLFORUM https://​www.xlforum.net/​forum/​sportster-motorcycle-forum/​sportster-motorcycle-intake-and-exhaust/​sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/​28235-e-z-choke-knob-removal-new-knob-install?​t=46782)) \\
 +
 +If the ID of the new knob is too small, you'll need to drill the hole out larger to go over the stud. \\
 +Start with a small bit and work your way up with larger bits until it fits the rod. \\
 +Note: Drilling into plastic creates heat which melts the ID larger than the drill bit. \\
 +So using a bit exact the exact size of the rod may result in a hole that's too big. \\ 
 +
 +After drilling, it was found that the hole wasn't quite deep enough. \\
 +So a drill bit was taped off to mark the correct depth to make and the knob was re-drilled until it met the tape line. \\
 +Then the knob was installed on the rod with thread sealer (nail polish in this instance) and the set screw tightened up. \\
 +
 +{{:​techtalk:​evo:​carb:​mooneyes_deco_dash_knob_enrichenor_knob_3_by_johnny_wolf.jpg?​direct&​300|}} ((photo by Johnny Wolf of the XLFORUM https://​www.xlforum.net/​forum/​sportster-motorcycle-forum/​sportster-motorcycle-intake-and-exhaust/​sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/​28235-e-z-choke-knob-removal-new-knob-install?​t=46782)) {{:​techtalk:​evo:​carb:​mooneyes_deco_dash_knob_enrichenor_knob_4_by_johnny_wolf.jpg?​direct&​300|}} ((photo by Johnny Wolf of the XLFORUM https://​www.xlforum.net/​forum/​sportster-motorcycle-forum/​sportster-motorcycle-intake-and-exhaust/​sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/​28235-e-z-choke-knob-removal-new-knob-install?​t=46782)) {{:​techtalk:​evo:​carb:​mooneyes_deco_dash_knob_enrichenor_knob_5_by_johnny_wolf.jpg?​direct&​300|}} ((photo by Johnny Wolf of the XLFORUM https://​www.xlforum.net/​forum/​sportster-motorcycle-forum/​sportster-motorcycle-intake-and-exhaust/​sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/​28235-e-z-choke-knob-removal-new-knob-install?​t=46782)) \\
  
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