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====== REF: Oiling & Lubrication - Sub-05C ======
====== Homemade Primary Oil Sight Gauge ======
Article by asasial of the XLFORUM ((https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/104401-primary-oil-sight-gauge-5-mod-that-could-save-you-hundreds?t=922963&highlight=tapping+threads)) \\ This should be done with the primary cover removed to keep the shavings from the drilling and tapping out of your engine.

  * Parts:
    * 1/8" MIP to 1/4" 90° brass fitting \\ (any hardware store should carry these and you can also get creative with 90° fittings in your choice of brass or stainless steel)
    * 1/4" clear tubing (or the milky colored tubing used for an ice maker works as well)
    * 1/8" pipe tap
    * Pipe dope


  * Mark the holes for the length you want (the site tube should extend higher than the optimum oil level). 
  * Pre-drill the holes
  * Tap the threads with a 1/8" pipe tap (tapered thread)
    * Only run the tap in about half way and check your fitment. 
    * If the fitting needs to go farther in, take it out and run the tap back in a little more and then re-check fitment. \\ With the tapered pipe tap, the hole gets bigger the further you screw it in. Run it in too far and it can make for a bad fit and cause leakage.
  * Install the fittings with some pipe dope on the threads and put a piece of clear tubing between them and that's all there is to it.

  * With the bike on the kickstand, the level may be a little over the top of the tube. But, if you put a mark with a sharpie on your cover (level with the check plug towards the front of the cover) you will see where it should be with the bike level.
  * Once you get use to seeing where it should be, you won't have to worry much about having a mark.


|{{:techtalk:ref:oil:primary_oil_site_plug_by_1_asasial.jpg?direct&300|}}|{{:techtalk:ref:oil:primary_oil_site_plug_by_2_asasial.jpg?direct&300|}}|{{:techtalk:ref:oil:primary_oil_site_plug_by_3_asasial.jpg?direct&300|}}|
|  Primary Site Plug ((photo by asasial of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/104401-primary-oil-sight-gauge-5-mod-that-could-save-you-hundreds?t=922963&highlight=tapping+threads))  |||

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