You don't check it. you replace it. Either with the drain plug and fill plug on the front or on other style motors the plugs are under the sprockets. Fill 2/3 to 3/4 full of bobcat's high performance synthetic oil.
I have one ,where do you want it sent. Mechanicalthings.
I have a 1950 f7 with 337 Lincoln motor and it is red
1 x 337, 337 x 1 = 337
1 and 337 (337 is a prime number).
1, 337.
337 = CCCXXXVII
337, 674, 1011, ...
-337
337 x 1
Ten percent of 337 is 33.7
0.337 = 337/1000
337 AC is the fourth century.