Go with the chart: 3/8 x 81"
That's what I use on my 100 and also my 124 for the PTO belt.
Use the cub belts, They are worth it!
__________________
John
Proud Owner of a Model 100 and a Model 124.
A homemade cart, 2 x 42" mower decks, a 38" deck,
a 42" front NF blade, and a lawn sweeper!
|