Hey Jean, I have the Operators manual that I had from old L1801. Just put your mailing address in a e-mail to me or a regular private message and the next time I am at the Post Office I will send it. My friend who bought my old tractor said that since I gave him 3 binders with copies of everything he did not need the original. I got this from Kubota and it was for a L185. It is a rather medium quality copy of the old original manuals and some of the graphics like a copy of a copy.
Now after you clean the engine what you want to do is try and get every bit of grime and oil off of it so you can actually see the where the leak is coming from. I have this thing about using high temp silicone and if it is lightly used it is fine but if you need more it is a waste. That stuff is a mechanics nightmare getting off the parts when the rebuild happens so go light with it and if does not work then it is time to take it apart.
Now after you clean the engine what you want to do is try and get every bit of grime and oil off of it so you can actually see the where the leak is coming from. I have this thing about using high temp silicone and if it is lightly used it is fine but if you need more it is a waste. That stuff is a mechanics nightmare getting off the parts when the rebuild happens so go light with it and if does not work then it is time to take it apart.