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Installing an oil check valve in the '09-'11 600R

This should really be done by a machine shop or engine builder.
For adding a check valve in the top case: Drill in the top half of the cases 1 3/16" above the split on the cases and directly in the center above the cross shaft using a 1/8" drill bit.  We recommend splitting the cases to do this however many people are drilling this out while also using a high power shop vacuum to catch the shavings with great success. See the minimal shavings picture below without use of a vacuum. When drilling out the second stage for the check valve we recommend only drilling to the depth needed to install the check valve. Measure the first/second smallest part of the check valve collar and use the correct size of drill bit. If your completely new to this you should drill a test hole in a sheet of metal and check to make sure the check valve will fit tight once it is tapped into place. Do not tap it into the test sheet metal.

Measure	Use center punch	Drill out first stage	Drilled out	Minimal shavings
Drilling out second stage	Cleaning everything up	Tap fitting into place using a wood block	Hook up a syringe and check the valve

 

We recommend running premix while any bubbles are worked out of your new oil injection system. Be sure to use the bleeder screw to get the air bubbles out of the oil lines then be sure to tighten it up afterwards.

Disclaimer:
JS Powersports accepts no liability for the use or misuse of any of this information.