... -BS 166 For model1 004 336809,461 004 336915-17,28,39,40,63,69,931 004 320 136 momo0 001 112003-022,025 ... -006,008-010,014-017,020-0220 001 133033,004DA(L)0,9KWDM(R/L)0,8-1,0KWAutomobile Carbon Brush we ... spring pressure reduces arcing, brush wear, heating, and commutator wear. Light spring tension can cause threading and definitely will shorten the ...