Chainsaw Repair

High Output Pump for 460, 660, etc. 1122 640 3201   $81.46 (prices from Norwalk)

These are the two parts that are different in the H O pump from the standard pump

1122 647 0602  Pump Piston with 1.15 mm stroke instead of .9 mm stroke  $37.54

1128 647 4802  Control Bolt  (The companion piece to the HO piston) $10.50

When removing and modifying the pump you should also replace these parts . . . .

9646 945 0160  O rings 4 X 2   for control bolt (You need two)

1122 649 5000  Sealing Ring B4 X 2   Seals pump body to oil tank (You need one)