APPENDIX A · SPIRO-LOC INSTALLATION

APPENDIX A SPIRO-LOC INSTALLATION The spiro-loc is a thin clip that is shaped like a spring. It is known for its excellent wrist pin retention ability. First you should gently pull apart the spiro-loc, resembling a coil. This will allow you to easily “walk” the lock in to the groove. Start a leading edge of the spiro-loc at one of two places, 8 o’clock or 2 o’clock, then using a flathead mini screwdriver push the lock down into the groove and “walk” the lock around the hole until the entire lock is installed. See fig. 1, 2, 3 and 4. Make sure the lock is sitting flat and bottomed out against the inside edge of the lock groove. Next repeat the same procedure but start on the opposite side of where you started before. Walk the lock around again making sure it is securely locked into place. Please use caution and make sure the lock is flush all the way around. Sometimes the lock is damaged during installation or debris gets into the grove and the lock does not properly seat, leading to engine failure. It is very important to check all locks once they have been installed and once again a final time when the engine is being assembled. 1. 2. 3. 4. Warning: do not overstretch spiro-locs! Do not reuse spiro-locs!