Hi @all, i came here when searching for help with my chainsaw and looks like here may be a couple of experts so im gonna ask and see if someone can help me So, the chainsaw is Stihl O51 AV, which i got from my mothers uncle, i already did a couple minor fix-ups like cleaning the carburetor, changing gas pad, fuel filter and lines and replacing starter cord, but this i cant figure out on my own.
The problem is that there's no oil flow, nothing is coming out to lubricate the chain. At first i thought that oil filter and hose are clogged but that's not the problem, i then went to a couple of services but they all refuse to work on it and one of them said to me that the issue is most likely a worn out axis that runs the oil pump. Then i saw this YT tutorial on MS 280 how to fix an oil pump but the design on 051 is different, first the clutch is on exterior, and there's no lid beneath witch is oil pump, theres an aluminium lid beneath clutch but that's just for protection against dirt. A far as i see the oil pump is inserted somehow into that block of chassis that is also an half of the oil tank. Now i still didnt opened it as i am stuck at removing the clutch, so far i've removed that first screw and took of the lid of the cluch but its not coming off. I've tried to to remove it with the tool attached but no luck, look like that its screwed on on these older models, and i thought that some sort of cone or incision is holding it in place. So first, how do i remove the cluch, and second what will that oil pump look like and how do i repair that axis, if that is the issue.
Please don''t recommend me to buy another saw, the ones in my price range that i tried just cant compare, with this one ive cut 60-70cm thick beech without any difficulty, the only other one that i've tried and can cut with such ease is my buddy's husqvarna xp 300 something(and of course much lighter and easier to use) but i cant afford anything like that for some time.