Replacing School 125 Petcock

Steve C.

New member
I'm new to owning a GasGas trials bike (School 125, 2018 model). The fuel petcock has developed a leak. Is it possible to change out the petcock assembly with the tank in place or will it require removal? Since I'm still getting familiar with the machine, I'm hesitant to start removing parts since everything is so compact. Thanks.
 
Your local trials club will have the skinny on who distributes them in your area. Usually a small outfit with grizzled owner who will know where to get the most obscure bits. Hopefully a rebuild kit is available.
 
If it's like my TXT250 the tank will come off easily. The tap seems to be held on by a clip. Should disassemble with that nut, which is an odd size and measures 15.3mm.
 
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