| 摘要 |
PURPOSE:To enable a choke valve to be manually opened and closed when a temperature sensing operational part generates improper action, by providing a temperature sensing driving release piece between the temperature sensing operational part of the choke valve and its choke setting piece. CONSTITUTION:A choke valve 13 provides a manual lever 25 and a return spring 17 in one end of a valve shaft while fixes an engaging arm 24 to the other end, and a choke setting piece, coaxially turned with a prime moving lever 21 connected to a piston rod 19 in a temperature sensing operational part 18, is engaged with the engaging arm 24. While a temperature sensing driving release knob 29 is provided in a position where it appears in a can surface 22B of a choke setting cam 22. In this way, the choke valve can be freely opened and closed by controlling the knob 29 even when improper action is generated in the temperature sensing operational part.
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