Joe Hill wrote in with some excellent questions about the R5 transmission fluids:
The question I have is the transmission. Where should the fluid level be? Is there a way to drain the fluid and replace it? And what type of fluid does it take? I checked the trans fluid today, (the plastic cap and dipstick on the right side of the bike sitting on it) and it looked very low. I could see a gear. The guy I bought it off said that it was reciently changed, but other things he told me were done to the bike turned out to be false. I think it needs fluid but I don't know how much it holds or what type. I also need to know if there is an easy way to drain out what is in it to make sure the correct amount gets put in.
Well, Joe, I checked my trusty manual, but found nothing in the transmission sections, nor in the specs section listing capacities. I found it under the "Removing the Engine" section, of all places:
As you can (sorta) see in the photo, there is a single bolt in the underside casing of the transmission, just in front of the arm holding the driver footpegs around the exhaust pipes. This is the drain plug. Take it out to drain the tranny fluid.
The manual goes on to say:
- Warming up the engine will quicken draining the oil.
- The amount of oil is 1500cc (1.6 qts). Motor oil SAE 10W/30 should be used.
Seems pretty simple. At first I thought the perhaps the Autolube system was responsible for oiling the transmission as well, but since the specified oils are different, this cannot be the case. It must just be a self-contained oil bath, and it's probably a good idea to drain and replace anyway. After seeing this, I'll probably wind up doing this myself!
Hope that helps!