Henry David Thoreau once said "If I hung a picture on a nail hammered into plaster, I would not be able to sleep at night".
Adjusting the valves on your motorcycle is one of these things. You cant see them, you can sort of hear them, but the only way to know for sure if they are too loose or tight is to check them.
If you check them at the interval in the manual and they are ok, and ok the next time, you can consider not checking them as often as the manual calls for. But considering what is at risk if they go out of spec, two hours and 4 O-rings is nothing compared to having a valve drop into the cylinder.
Personally working on a nice, clean, not rusty, simple machine like a motorcycle is an enjoyable afternoon all in itself.
If someone really hates the idea of this kind of wrenching, there are motorcycles with hydraulic lifters.
There is a paradox in manufacturing: You want your products to be perfect when you ship them to your customers, so you test each one to make sure it works.
If you never find any problems in your tests, you are wasting your time testing them. If you catch one or two failures out of hundreds, you are doing about right. If half the tests fail then your production line needs to be improved. Its like that - if you check your valves and they are way out, you are not checking them often enough - if you never need to adjust them because they are always in spec, it feels like you just wasted 2 hours.
Last edited by KCW; 03-07-2018 at 09:00 AM.