Clarkbug
ArboristSite Operative
Depends on which tank fitting you have. Tank to carb line should be 3/16" ID in any case. I've used 3/16" automotive fuel line for this piece, as it's OD seals nicely in the pass-through hole of the carb box. Gotta oil the outside of the line a bit to get 'er through that hole. I did work on one saw that must've had a smaller pass-through hole, as 3/16" ID automotive line would NOT go through. Ended up using 3/16"x5/16" Tygon type line on that one.
In-tank line could be 1/8" ID or 3/16" ID. I've seen both types of fittings. One type has barbs for 3/16" lines on both ends............and the other has the large barb on the outside end and a long skinny barb for 1/8" line on the inside end. 1/8"x1/4" or .117x.211" line will work fine on the long/skinny barb. 3/16"x5/16" line will work fine on the 'big barb' version.
Thanks!
I'm on the road for work this week, but I'll pull things apart this weekend to see what I have.