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C-451 SEAT STAY OPENER & TIGHTENER Thank you for purchasing the HOZAN C-451 SEAT STAY OPENER & TIGHTENER. With proper care and handling, this fine instrument will provide years of trouble-free operation. Please read this entire instruction manual carefully before attempting to place this instrument in service.
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Secure the handle on the shaft head using a 2 mm hex key wrench. * You can also turn the shaft head with the HOZAN C-160 RATCHETING HUB NUT WRENCH or 14 mm wrench in place of installing the handle provided.
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First, engage the outside edge of Attach- ment A of the C-451 with the inside of one of the seat stay or chain stay. We recommend widening the stays at their Attachment A rear ends to reduce damaging them and to Attachment B make the work easier.
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Operation Turn the handle further. The frame (stays) will be widened. Caution Do not widen the frame excessively. This could extremely deform or damage the frame. Narrowing the frame Reverse the procedures for widening. The inside edge of Attachment A and the outside hook of Attachment B should catch the outside of both stays.
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