| 摘要 |
PURPOSE:To make a contact position of a detection switch adjustable easily from the outside of a casing, by attaching the detecting switch to a position at the opposite side to an engine of the casing. CONSTITUTION:Adjustment for a contact position of a select detecting switch 298 is easily carried out in the following process that a lock nut 91 is loosened to some extent, turning round a body of the select detecting switch 298, and it is moved in an axial direction up to the specified position, then this switch body is locked by the lock nut 91 again. And, since the select detecting switch 298 is attached to a casing wall 90 at the opposite side to the side where an engine is set up, the engine is in no case a hindrance to adjusting operation, thus working properties are well improved.
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