I have been told it is the first two numbers in your serial number.
On a Arien's mower you will use 46 inch belt. This is an older type lawn mower.
It is always the first 2 numbers of the code number on Briggs and Stratton engines.
1994
What kind of lawn mower are you changing blades on?
The Sears mower model 917.377280 was manufactured in 1998. You can typically find the year of production on the mower's data plate or by checking the owner's manual for specific details related to that model. If you need further verification, you could also consult online resources or forums dedicated to lawn equipment.
on the mower deck
No you can't use a golf cart mower on a lawn mower. You have to find a muffler that matches the make and model of the lawn mower.
If this is the 500 series Weedeater mower, try Walmart. They have this mower in stock.
You can find a wiring schematic for an 88 Craftsman GT ride on lawn mower at various tractor supply stores. You can also find it in the mower's owner's manual.
model type and code of the mower and from the engine. generally it is metal stamped on the engine and the unit model is near the rear of the mower.
2000
sorry the only info I can find is after WW2 and before 1960. good luck.