From post #3
get some small clear nylon hose, I got it for like $.15 a foot... most places want like $4.50 a foot for the right stuff... the nylon gets a bit hard after fuel has sat in it, but it is fine for general fuel lines, just use a chunk of the fuel line that came with the trimmer in the tank from the clunk to the stopper...
I would not use silicone line(THAT CAME WITH THE PLANE), for a clunk line with GASOLINE. Just asking for problem.
Black neoprene line will work for clunk.
I like the primer bulb and extra line from carb back to the tank. Why?
1) well it does not look like it belongs on a plane. Do I care?
2) you need a good choke seal to pull fuel from tank while turning the engine over to prime.
The primer bulb fills the carb in a couple of seconds no muss no fuss.
3) save having to pinch and solder seal that fitting on carb;
4) you can plumb a 'T' fitting between the carb and tank and use it as a fill line/drain line for the tank (PUT THE "T" BETWEEN THE PRIMMER BULB AND FUEL TANK NO RESTRICTION TO FILLING FLOW IF VENT LINE IS OPEN, NO CARB FLOODING;
5) any fill fitting (FUELING VALVE GAS RATED about $13 USD transfered from your pocket ot someone elses) you put between the tank and inlet fitting to carb adds a minimum of 3, possibly MORE locations for air to enter the line and cause problems!
6) see #1
7) the stock carb on the weedies are fairly small in venturi size and many times get upgraded to
an 11mm venturi. Walbro 167-a is a good upgrade and it has an intergal primer. Available for many locations
including DDM online.
See #1
Spraying other combustables into throat does not fill the interior passages of the carb and that is really on of the main things your after in starting sequence.
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