在维修四行程70、90、100等发动机时,常常需要对气门进行研磨,一般资料介绍用橡皮碗吸住气门头进行手工研磨,可橡皮碗在市场上很难买到,而且此法速度慢,笔者在维修实践中自制了一简易气门研磨器,现介绍给各位朋友。找一国产250车速表软轴,除去固定座,在涡轮端面钻φ5.1mm的孔,深度10mm左右;再在涡轮的圆柱面上垂直于φ5.1mm的孔打φ3mm的孔,攻φ4mm的螺纹,拧上一小螺钉,这样 In the maintenance of four-stroke 70,90,100 other engines, often need to grind the valve, the general introduction of the information with a rubber bowl to suck the valve head for manual grinding, rubber bowl can be difficult to buy in the market, and this method is slow , The author in the maintenance practice made a simple valve grinder, are introduced to my friends. Find a domestic 250 speedometer flexible shaft, remove the fixed seat, drilling φ5.1mm hole in the turbine end face, the depth of about 10mm; and then in the turbine cylindrical surface perpendicular to the φ5.1mm hole hit φ3mm hole, attack φ4mm thread , Screw a small screw, so