All 100 pages of this Bolens Medium Tube Frame Service and Repair Manual (OEM #552875-1) focus on one thing: getting your Medium Tube Frame tractor back to factory condition. You get a full run of wiring diagrams covering magneto, battery, and solid state ignition for every model on that list, plus troubleshooting guides for the electrical system, drive train, fuel system, chassis, and hydraulic lift. Inside: 3-speed and 6-speed transmission assembly, Model 10 hydrostatic repair, clutch and brake adjustments, and carburetor tuning. Load-test the battery down to 9.0 volts, confirm 11.5 to 12.5 volts, and clean the fuel filter every 100 hours per the maintenance chart. No more chasing ignition faults with a multimeter and a prayer. Download now, pull it up on your phone in the garage, and get that tractor running again this season.
What's Inside This Bolens Medium Tube Frame Series Manual
| System | Pages | Key Topics |
|---|
| General | 3-13 | Serial Number Information, Specifications, Maintenance Chart, Lubrication Points, Lubrication Chart Gear Drive, Lubrication Chart Hydrostatic Drive |
| Electrical System | 14-37 | Trouble Shooting Guide, Model-Specific Wiring Diagrams (Magneto, Battery and Solid State Ignition), Delco-Remy Generators, Testing Electrical System |
| Drive Train | 38-68 | Trouble Shooting Guide (Bearing Installation Tools, Oil Seal Tools, Worm Centering Kit No. 171-9432, Transmission Assembly 3-Speed, Transmission Assembly 6-Speed, Transmission Assembly 3-Speed Gear Diagram, Transmission Assembly 6-Speed Gear Diagram, Removal and Installation of Hydrostatic Package, Model 10 Hydrostatic Repair, Transaxle Assembly) |
| Fuel System | 69-74 | Trouble Shooting Guide (Fuel Tank and Valve, Fuel Filter, Air Cleaner, Carburetor Adjustments) |
| Chassis | 75-90 | Steering Assembly (Clutch Assembly 6-Speed Transmission, Clutch Assembly 3-Speed Transmission, Clutch Assembly 3-Speed Transmission Older Models, Belt Guide Adjustments, Travel Pedal Adjustment Hydro Models, Hydrostatic Neutral Adjustment, Brake Assembly, Parking Brake, Disc Brake, Brake Interlock Switch, P.T.O. Interlock Switch, Drive Belts, P.T.O. Belts, Starter-Generator Drive, P.T.O. Shaft and Seal) |
| Hydraulic System | 91-96 | Trouble Shooting Guide (Principle of Operation, Hydraulic Power Lift, Hydraulic Lift Kit, Transmission Filters) |
| Engine | 97-99 | Trouble Shooting Guide, Engine Removal |
| Service Letters/Bulletins | 100 | |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| All Models |
| Fuel Filter Maintenance | 100 Hrs. Clean | p. 9 |
| Battery voltage | 11.5 to 12.5 volts | p. 37 |
| Battery voltage (load test limit) | 9.0 volts | p. 37 |
| Engine Oil Capacity (Briggs & Stratton) | 2-3/4 pints | p. 4 |
| Gasoline Capacity (Briggs & Stratton) | 4 quarts | p. 4 |
| Engine Oil Capacity (Wisconsin) | 1 quart | p. 6 |
| Hydrostatic Transaxle Bolt Torque | 240 inch pounds | p. 64 |
| Hydrostatic Auxiliary Pump Capscrew Torque | 15-18 ft. lbs. | p. 66 |
| HH-100, HH-120-120090 C, HH-120-12099E, HH-140, HH-150 & HH-160 |
| Engine Oil Capacity (Tecumseh) (HH-100, HH-120-120090 C, HH-120-12099E, HH-140, HH-150 & HH-160) | 3 pints | p. 5 |
| HH-120 - 120061 B |
| Engine Oil Capacity (Tecumseh), HH-120 - 120061 B | 2 pints | p. 5 |
