Need help with fuel line

[Command52]

I want to order the correct fuel line for this tractor, It has the original ih carburetor on it , Is their a adapter that goes between the carb and gas line or does the steel line screw directly into the carb and the fuel bowl, What thread is the inlet on the carb . I would like to chase it with a tap

[Don McCombs]

Not sure which tractor "this tractor" is, but TM Tractor Parts sells two different versions for the Cub.

http://www.tmtractor.com/new/fl/864fp.htm
http://www.tmtractor.com/new/fl/373fp.htm

[Bill V in Md]

Carburator Inlet threads are 1/2 - 20.

[Command52]

Is that 1/2 20 pipe thread

[Stalkcutter]

No, It is not Pipe Thread.

It is 1/2- 20 UNF (Unified Fine Thread)

[Bob McCarty]

Is that 1/2 20 pipe thread

1/4" pipe thread will strip out the 1/2-20 threads. That happens a lot when someone wants to use a rubber gas line and gets a fitting with a hose nipple that is pipe thread. They can be helicoiled back to original most of the time.

[staninlowerAL]

You can order the correct fitting for the carb and the fuel shutoff/sediment bowl from McDonald Carberator. Steel 5/16 brake line is the correct size. Check the How To forum for lots of ideas.

[Royalwulff24]

I want to order the correct fuel line for this tractor, It has the original ih carburetor on it , Is their a adapter that goes between the carb and gas line or does the steel line screw directly into the carb and the fuel bowl, What thread is the inlet on the carb . I would like to chase it with a tap

I got my steel fuel line off eBay, the seller had both types, one for horizontal exhaust and one for vertical. The seller was chev55beer, cost including shipping was $37.50, took about a week from Mi. to Pa. It came with fittings and fit perfectly.