This is the Kubota B2650 and B2660 Snowblower Operator's and Parts Manual (form 251551), the factory book for these front-mount snowblowers and the tractors they attach to. Its 50 pages combine setup, operation, maintenance, and a full illustrated parts breakdown.
It walks through sub-frame and snowblower installation, hydraulic connections and adjustments, the torque tightening chart, lubrication and maintenance, and operating instructions for chute rotation, lifting, and snow removal. Specifications list impeller and auger speeds, cutting width, and chute rotation, and the parts illustrations give replacement part numbers.
For an owner fitting or servicing the blower, it covers the common headaches, a lift that only works at idle, inconsistent chute or lift action after setup, and shear bolt or drive chain failures, with the part numbers and torque values needed to put it right.
What's Inside This Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety Precautions | Before Operation, Maintenance | |
| Safety Signs | Safety Sign Locations, Care of Safety Signs, Sign Illustrations & Part Numbers | |
| Specifications | Authorized Tractor Applications | |
| Tractor Preparation | Steering Stop Plate Installation | |
| Sub-Frame Installation | Installing the Sub-Frame, Units Using 3-Point Hydraulics or the B2056 Valve Kit, Units with Front Loader, All Unit Combinations, Installing Handle Support, Hydraulic Connections | |
| Hydraulic Adjustments | 3-Point Hydraulic Control Valve Return Spring (Lever Is Moved Too Far Forward, Hydraulic Relief Remains Partially Activated) | |
| Additional Assembly Information | Important Notes, Pre-Delivery Inspection, Hydraulic Control Valve Return Spring Adjustments, Drive Shield Exchange | |
| Snowblower Installation | Fastening to the Lift Frame, Installing the Chute, Installing the Chute Handle, Connecting the Driveshafts, Skid Shoe Adjustment | |
| Torque Tightening Chart | Standard Torque Application Chart (Sae Grade 5, Metric Grade 8.8), Special Torque Applications (B2400 Tractor Front Axle Housing, Sub-Frame Fasteners) | |
| Lubrication & Maintenance | Lubrication, Daily Maintenance, Snowblower Adjustments (Skid Shoes, Drive Chain, Chute Deflector) | |
| Operating Instructions | Operating Controls (Chute Rotation, Lifting & Lowering, Snowblower Drive), Preparing for Snow Removal, Removing Snow, Transporting the Snowblower | |
| Parts Illustrations | Housing, Auger & Fan Components, Drive Components, Discharge Chute Components, Gearbox Components, Sub-Frame Components, Hydraulic Lift Components, Driveshaft Components |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Front Axle Housing Bolt Torque (M12-1.25 x 45) | 91-108 ft. lbs. (123.5-147.0 N•m) | p. 9 |
| Front Axle Housing Nut Torque (M12-1.25) | 62-75 ft. lbs. (84.0-101.8 N•m) | p. 9 |
| Auger Shear Bolt Replacement Part Number | 70050-94176 | p. 32 |
| Fan Adapter Shear Bolt Replacement Part Number | 75599-01125 | p. 32 |
| Drive Chain Deflection | 1/8 to 3/16 of an inch | p. 25 |
| Drive Chain Replacement Part Number | 70050-94276 | p. 34 |
| Gearbox Pin (M8 x 35) Replacement Part Number | 70050-94223 | p. 38 |
| Gearbox Pin (M6 x 12) Replacement Part Number | 70050-94224 | p. 38 |
| Hydraulic Hose (1/4 x 28) Replacement Part Number | 70050-94515 | p. 42 |
| Quick Disconnect Coupler Replacement Part Number | 75532-66323 | p. 42 |
| Overall Length | 132.2" (3558 mm) | p. 7 |
