K75 s engine oil leak

[Rcgreaves]

Removed lower case fairing to find this oil leak, small enough it doesn’t appear on ground... yet.  Maybe that sender? Oil pump?  Most likely culprit?

[The Mighty Gryphon]

I'm gonna guess timing chain cover.  Where it contacts the valve cover.  That seam is sealed with goop, and it can leak if it's not sealed properly.

[Martin]

Thoroughly clean and dry it, then run or ride it. If it's hard find, after cleaning and drying spray with spray on talcum powder in your preferred fragrance,  it will show up easier.
Regards Martin.

[Chaos]

Put the lower fairing back on.

[billday]

Put the lower fairing back on.

That's what I was going to say. All the spotless bikes I see on here are making me feel like an oddball. It's nice to see a picture of a bike that looks like mine.

[Past-my-Prime]

I have three identified current oil leaks, each of which requires a different fix.
1: last oil change I didn't have a new crush washer so reused mine and there is a drip there. I've since bought a dozen so am set for the next go around.
2: the O-ring for the oil filter cover needs to be very clean and crack free. I think I've maybe got a crack because I get a small amount of seepage around that. Next oil change I'd like to replace that.
3: the oil/water pump is letting a bit of oil ooze onto the front of the motor. I've not had the courage yet to disassemble and potentially replace that.
All in all, I lose hardly any oil and that would be my main concern. The garage floor where I park isn't as pretty as it could be but I don't need to top up between oil changes so that's good.

[Chaos]

Check the o ring for flattening also

[volador]

I have three identified current oil leaks, each of which requires a different fix....
3: the oil/water pump is letting a bit of oil ooze onto the front of the motor. I've not had the courage yet to disassemble and potentially replace that.
... so that's good.

https://www.euromotoelectrics.com/product-p/pumpkit870.htm

https://www.euromotoelectrics.com/product-p/pumpkittool628.htm

https://www.euromotoelectrics.com/product-p/3bsealant376.htm

Service Bulletin 11 046 91 (2458) & 11 001 02 (002)

Water Pump
pre-1986-87? original design old style impeller 11411461177

Superseded by 11412325850 design change the shaft with gear Z=32 teeth, shaft- 11411461183

Superseded by 11417676366 same shaft with gear Z=32 teeth

latest design 11517676371 design change shaft with gear Z=19 teeth, shaft- 11411461793

[Nine80seven]

Leave lower fairing off, next rain ride will clean it up.