To prevent piston seizure on R51/2, R51/3, R67 & R67/2 carbs, the float cover should be replaced.

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Duane Ausherman BMW motorcycles
What I can remember after decades of working with BMW motorcycles
To prevent piston seizure on R51/2, R51/3, R67 & R67/2 carbs, the float cover should be replaced.

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