hard to see but could it be coming from your crankshaft access cap? - has a large 'O' ring when removed.
try and use the best fitting/widest blade screwdriver on the two screws as it's easy to slip on them, I attach molegrips to the screwdriver (square-section) shaft and lean on the screwdriver into the screw before twisting moles. EDIT Ooops! I see someone has gone to allen key/hex so should be easier
The hex's look pretty well worn so I'm gonna get a mech who I know to do it. I wouldn't wanna round them off and be up sh1t creek without a paddle.
totally agree - even if hex is looking like it will slip then they often come undone by hammering a flat face punch (same dia as hex screw head) onto head of screw. an added bonus is it can close the hex up slightly to help the allen tool grip again.
looking at picture again, it looks possible that someone has already used a pointed end punch to either do up and/or undo the two screws.
Yeah just seeing that Chris. Why would someone need to be in there / what's found under that small cover?
plus you can attach a tool to act on the end of the crank to help draw off the crankcase cover for alternator/starter motor etc access.
Replace the screws with stainless and you can always get the old ones out by knocking an appropriately sized torx bit into the allen socket - no need to be precious with them
Change the screws for titanium ones and you will notice the performance increase due to the weight saving as soon as you ride it! :tearsofjoy:
The point about stainless is not just that it is prettier, it is also a lot harder than the cheese bolts and screws fitted to relatively unstressed parts of our bikes as oem, so won't round out anything like as readily.
