Have a B&S Professional Series 8.75 on a John Deere walk behind JS46. I am wondering what the smallish oil filter does on it. I replaced the piston & rings about 2 years ago so I had a look inside the case. Seems that there was some sort of channel leading from the filter to the crank bearing. Thus, since this engine has a splash system, I am thinking that maybe the filter has some filtering function regarding the oil to that bearing somehow but doesn't filter the engine as a whole the way a car filter operates.
Didn't think too much about it back then & I have replaced the filter once. Just wondering how critical it is to replace it regularly since I do change the oil on schedule. The filter is about $10 which is kinda high, especially if it isn't that beneficial.
PS - Another reason for some skepticism is because my Honda GCV160 & GCV190 engines don't have filters & those are very long lasting engines.
Didn't think too much about it back then & I have replaced the filter once. Just wondering how critical it is to replace it regularly since I do change the oil on schedule. The filter is about $10 which is kinda high, especially if it isn't that beneficial.
PS - Another reason for some skepticism is because my Honda GCV160 & GCV190 engines don't have filters & those are very long lasting engines.