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四、中速、高速时无力1.应检查1)真空省油器及下体过渡方口是否畅通;2)真空省油器柱塞是否发卡;3)机械省油器小推杆是否发卡;4)真空省油器小推杆是否发卡;5)主油路及主量孔是否被堵。2.省油器量孔密封性真空省油器及机械省油器的量孔密封性可通过“吹风或吸气”法来检查。3.省油器维修取一段φ1.5～φ2.0mm 钢丝,将两端磨平,穿过省油器弹簧顶柱球阀,从另一端敲击数次(图3)。然后,在球、座之间加入机油和氧化铝研磨剂,借助推杆5上、下移动以研磨阀座。
Fourth, the speed, high speed weakness 1. Should check 1) vacuum carburetor and the lower body transitional port is smooth; 2) whether the vacuum fuel pump plunger card; 3) mechanical fuel economy small putt card; 4) vacuum fuel-efficient Small push rod is issued card; 5) whether the main oil circuit and the main hole is blocked. 2. The amount of oil hole leak detector The amount of mechanical oil leak detector and the amount of oil hole can be sealed by “hair or inhalation” method to check. 3. Fuel tanker maintenance Take a piece of φ1.5 ~ φ2.0mm steel wire, grind both ends through the economizer spring top ball valve and tap several times from the other end (Figure 3). Then, add oil and alumina abrasive between the ball and the seat, and use the push rod 5 to move up and down to grind the valve seat.