Exhaust Valve Solenoid - 600 Rush

I'm in the process of cleaning the exhaust valves on the 600 Rush. They were overdue and a bit sticky with build up.

I noticed some oil residue in the bottom of the engine compartment. There are hoses connected to the exhaust valves that lead to the solenoid and then there is a drain tube.

How does this work and why do I have oil residue in the bottom of the engine bay from the exhaust valves.

Attached is the schematic... (part #3 goes into part #1 then drains out part #2. Just want to know what causes the drainage.

https://www.babbittsonline.com/oemp...39/engine-exhaust-valves-solenoid-all-options

64 reviews and no comments or insight?

Well guys, I found some information to share. I'm told that any oil residue seen in the belly pan from the Exhaust solenoid drain is likely related to an adjustment required on how much oil is injected related to throttle position. I will caution that I have not seen this happen until the exhaust valves became overdue for cleaning so I'm still reserving my opinion on that until I ride after cleaning the exhaust valves to eliminate that as a causal factor.