My fuel line setup
 

Here's the way I have my fuel line now [img]http://lh5.ggpht.com/MilesCyaaa/SDrX...pics%20027.JPG[/img] and [img]http://lh6.ggpht.com/MilesCyaaa/SDrX...pics%20028.JPG[/img]

air in the fuel line
 

What happens if there is an air bubble in the fuel line?

Have you found a replacement petcock that fits these tanks?

You need a fuel filter! Just loop it, Like Liverchip said!

Yes, Get real fuel line........

Re: My fuel line setup
 

Way to short! Alway's good to have a little extra! It may come in handy..

way too short!
 

I carry extra fuel line in the tool box. You suggest looping it eh? Okay. I will try looping it when this fails.

Petcock valve
 

zundapp2,

Can you give the brand/specifications for petcock valve?

Replacement petcock purchased from bestdirtparts on eBay. Petcock listed as replacement for Honda XS50 and CRF50, 110, & 125. Cost was $6.99 plus postage. If purchased I suggest exchanging the petcock filter tubes with the ones from the original petcock. Tubes may be removed by gently twisting and lifting. Each has a different diameter so they cannot be installed in the wrong hole.

I opted for a smaller fuel filter for my installation. (Have forgotten filter brand but readily available at any motorcycle shop).

My bike originally had fuel flow problems resulting from the front of the tank being lower than the rear. The bike was runnning out of gas although considerable fuel remained in the tank. I raised the front of the tank to allow all fuel in the tank to reach the carb.

I have the same problem. I also have a problem with looping the fuel line. I suspect the loop is giving the carb a hard time when the tank is low on fuel. My bike stalls occasionally when it is getting low on fuel.

What makes the shorter petcock better?

With the original petcock the outlet is approximately on the same plane as the inlet on the carb. The distance between the two is quite short and it is difficult to squeeze the fuel line and filter into the available space without looping the line or eliminating the filter. The shorter petcock increases the distance between outlet and inlet and provides more working space. (I also eliminated the choke cable and bracket on my bike. That decision provided even more room but is not necessary to install the fuel line and filter).

You might consider standing your bike upright and placing a level on the bottom of the gas tank to see if the front is lower than the rear. With my tank it was obvious by looking at it that the front was too low. The bracket to which the rear of the tank is attached is too high and should have been lowered, but for me it was easier to drill two new holes in the front of the tank to achieve the desired results.