?? What filter? I gather it is a walk-behind mower. Just change the oil every 25 hours to keep it alive!
It depends entirely on the make/model/type number of the engine it's equipped with. A common 12.5 hp engine used by older sabres is the 286707 series Briggs & Stratton I/C. It's air cleaner cartridge filter is part number 496894s. Another common 12.5 is the newer 219707 series Powerbuilt by Briggs & Stratton. It's air cleaner is part number 698413.
.028 or .030 pick your favorite one.
The fuel filter is clogged and restricting the flow of fuel to the carburetor.
It is at the rear, bottom of the engine and it usually has a square bolt.
0.6 liters
7.75 HP
20 oz
You need to specify the engine model/ series. It could be any where from 160in lbs. to 220 in lbs. or 35 ft lbs.
No, they are made in China to Ariens & Briggs specifications.
.32
Briggs and Stratton only recommend using their own brand of lawnmower oil. This oil is available in stores for around $6 for 18oz. This particular oil is designed to be compatible with air cooled engines.
SAE 30 weight or SAE 10W-30 weight. I recommend you use 100% synthetic oil in your air-cooled engine.