Proven Part 20" Bar and 4 Chains 3/8" .050" 72DL For Echo CS-660 20D0AS3870C 72LPX70CQ Ht 70 switch the standard mow ball

switch the standard mow ball to the No Spark Mow Ball to help reduce sparking when contacting rocks or pavement

No more than one extension should be added

Gasket-carb body

Gravely 09225400

Stihl 4001 713 3801

Proven Part 20" Bar and 4 Chains 3/8" .050" 72DL For Echo CS-660 20D0AS3870C 72LPX70CQ Ht 70 switch the standard mow ballProven Part 20" Bar and 4 Chains 3 8" . 050 72DL For Echo CS 660 20D0AS3870C 72LPX70CQ Bar Specifications Length 20" Pitch 3 8" Gauge . 050" Drive Links 72DL Mount D176 Compatible With Part 200SLHD176 Fits Echo Fits Echo Models: S451, CS452, CS500, CS501, CS501EVL, CS510, CS510EVL,CS550, CS5500, CS550EVL, CS610EVL, CS590. Fits Timberwolf CS60, CS60S, CS600,CS600P, CS601, CS602,CS610, CS610T, CS620P, CS650, CS650EVL, CS660, CS670, CS6700,CS680, CS701,