This Polaris 3900 Sport rebuild kit significantly improves the mechanical drivetrain inside the unit. The design improvements provide a much more reliable cleaner. This kit improves the drivetrain of the 3900 Sport cleaner. Many of the components have been redesigned to give improved ruggedness and durability over older 3900 Sport models. This rebuild kit includes: Part Number Description Qty. 39-006 Vac Tube Feed pipe (improved design) 1 48-141 O-Ring Feed Hose Connector 1 C40 Screw 10-32 x 3/8″ 10 39-126 Chain 1 39-420 Wheel Sprocket with Bearing 2 39-120 Chain Tensioner (improved design) 1 39-430 Rear Axle Block 1 39-440 Front Axle Block 1 39-200 Gear Box Assembly (improved design) 1 39-004 Bottom Housing (improved design) 1 39-401 Single Side Wheel (improved design) 1 48-045 Screw, 10-32 x 7/8″ SS Pan Head w/Star Washer 4 R0537800 Chain Guard (new to 2012) 1 39-602 Wheel Spacer 2 39-311 Bumper 1 48-036 Wheel Lock Screw 1
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