Honestly, after just putting one in last night...it's all in the wrist. No pun intended. I put one end in and then grip the other side with needle nose pliars. With pressure and a slight twist the wrist pin pops right in. I try to line the tip of the needle nose pliers with the notch on the piston.
Works like magic when you get the right motion.
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2004 GasGas DE250
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