Oil leaking from under the seat of my Kawasaki klr250

2 stroke engines are timed through the marks on the magnentor plate

get a volt meter and check the three yellow wires coming out of stator / generator. All should read over 12.6volts, all should have same voltage. if not, chevk plug connections for burning or, if they are good, pull out stator for testing.
If stator is good, replace voltage regulator unit, usually under seat near battery.

the oil is filled and checked by lifting passenger seat and hatch. The under bonnet reservoir tops up oil as required to ensure all the oil ways are filled. This ensures the top end of the engine does not run dry. If all is well then you will rarely ever top this up.
Try and determine where the oil leak is coming from and keep an eye on the oil level in the sump (under passenger chair)

4 stroke sae 30 advanced auto parts 8.00

Electric fan could be bad or a blown fuse or relay for the fan causing it to not work.

You can take you fan off and take it to an advance or napa or auto zone and get the to check it out.

But check the fuse and relay and make sure they are not blown relay may be under hood

possible bad rings allowing excessive oil seep up and wash spark out on next fire. do a compression check, ck for proper spark, and fuel....hope this helps

that box is called the air box, its where you engine breathes in its air. you say its leaking oil? these boxes are normally a bit oily but only really surface oil. If you can actually see liquid oil you have a problem with your petrol shut off. When the bike isnt running petrol will leak into the engine through the piston. When you start the bike all the petrol mixed with the engine oil will be pumped back into the air box. also check the level of the engine oil, if too much has been put in there then that can also be pumped back into the air box. If the petrol and oil has been mixing you must change the oil as petrol thins the oil and your bike could catch fire, the engine wear will be really bad.