| 摘要 |
PURPOSE:To inhibit adjustment with an adjust screw for an amateur and prevent fluctuation of air fuel ratio, by fitting a screw-driven blind plug in front of the mixture adjust screw in the low speed system of the carburetor. CONSTITUTION:An idle port 4 communicated with a low speed fuel line 2 of carburetor is equipped with an adjust screw 5 almost horizontally. A cylinder head 11 is set horizontal to the screw 5, so that the screw 5 is adjustable only with a special driver 12. A vertical screw hole 8 is tapped in front of the screw 5 and a screw-driven blind plug 13, composed of a head 14 having a groove 15, neck 17 and screw 16, is screwed in the hole 8. |
