TE310R Oil Drain Plug Question

In your opinion, could oil flow back into the head from the breather tank, or will it only return through the sump line.

Your bike would have to be laying on it's side, down hill and upside down. Not likely.

Not that unlikely for a trail rider.

I'd still be reluctant to put a filter on the head line though, not sure it would flow well enough for the system to ventilate appropriately.

I've never seen an issue with it until now. And that's on an older TC.

Just installed the ZT kit. There were no issues whatsoever. I didn't even drain the oil, just undid the old plug quickly, plugged the hole with my finger and then installed the new plug. Lost only an ounce or two of oil. The new oil fill cap went on easy by hand turning the barbed part and the cap together a quarter turn, then holding the hex part and turning the barb back, then repeating until it was in all the way. I do have a couple questions: I routed the drain back hose around the left side of the motor, between the mid pipe and the cylinder, then over the starter and into the new cap. Anyone see a problem with that routing? I liked it because it required no trimming of the hose. I want to be able to return the bike exactly to stock if I have to take it in for warranty work. I moved the hose shield back a bit so that it covered the section between the mid pipe and motor where it might get hot. Also, it took a shocking amount of torque to remove the old plug, should I apply that much on the new one? I put a decent amount on it but nothing like what it took to get it off. Lastly, should the screen/filter by the plug have come out when I removed it? I did not see it, if it shouldn't come out, how do you remove it for cleaning? Thanks in advance for the help.

The prefilter will now stick to the new drain plug by design. To change your oil, you can either remove the fill cap or use an inexpensive gear oil pump when refilling.

Thanks Tinken, is the way I routed the drain hose okay?

If it works for you, it works for me

On my 2011 310 the lowest connection off my frame oil catch section has a screened filter attached to the barbed hose end the drain back hose is attached to.
When I flushed my oil catch out there was a few chunks of rusty crap on there.

Have a look at urs

Did you add a screen here or is there a screen in that barb?

Screen is brazed onto the end of barb, about 20-30mm long from memory.