SCREW, THROTTLE BLADE, MIKUNI, HEXALOBULAR SOCKET, STAINLESS STEEL, 5MM LENGTH. Use T10 driver. Torque to 1 NM (9 in-lbs.). Must be secured by peening the back side or applying a high strength thread locker during installation. For most people peening will not be an option, as does require special tools to do so without bending or otherwise damaging the shaft. Regardless of the method, you must ensure they don’t come out (motolab will not assume any responsibility for damages caused by throttle blade screws that fell out and were ingested by the engine!).
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Throttle Blade Stainless Screw, Hexalobular Socket
Use in place of 13 11 2 343 370 FILLISTER HEAD SCREW. Two required per carburetor. Use 08-0557 T-HANDLE BIT DRIVER with number 2 JIS bit (or equivalent) in order to remove the stock screws. Note: The screws are peened on both sides. You can force them out by just continuing to unscrew once they tighten up again on the far side. Because of the peen on the near side, the bit is likely to want to cam out, stripping the head in the process. This can be mitigated by lightly tapping the bit into the slot before attempting to turn, and using sufficient downward pressure (particularly when breaking the screws loose and when forcing past the far side peen).