hydralics question on C175

Hello to all-
I am new to owning my c175 (have had many wh but not autos)and I would like to know if anyone can give me info on part numbers for the hydralic filter, hoses and what type of fluid to use? I am getting ready to put the plow on and a complete service. I noticed one of the hoses going to the lift cylinder has a bubble and don't want to loose a hose in the middle of a snowstorm.
ps-any help in where i can go to get the hoses would be great. I would usually take it off and match it up at a parts store however would like to have it prior to taking it off. Lastly, does anyone have a wiring diagram for the headlights?

Thanks in advance... steve-

Steve, go here https://lookup3.toro.com/partdex/index.cfm?xCaller=Toro and enter your model# and it'll give you every part # you could ever need.
The C-175 tractors came with Sundstrand trannys in 1980 and Eaton 1100 trannys in 1981-84. Some later 1980 models had Eatons as well. They all take the TORO# 79-5270 filter.
Mike......

1980=01-17KS02
1981=01-17KE01
1982=01-17KE02
1983=01-17KE03
1984=11-17KE01