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Operator's Manual
ST 151
Gasoline containing up to 10% ethanol (E10) is acceptable for use in this machine.
The use of any gasoline exceeding 10% ethanol (E10) will void the product warranty.
Please read the owner's manual carefully and make sure you
115 68 51-27 Rev. 2
English
understand the instructions before using the machine.

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Summary of Contents for Husqvarna ST 151

  • Page 1 Operator’s Manual ST 151 Gasoline containing up to 10% ethanol (E10) is acceptable for use in this machine. The use of any gasoline exceeding 10% ethanol (E10) will void the product warranty. Please read the owner's manual carefully and make sure you 115 68 51-27 Rev.
  • Page 2: Safety Rules

    CONGRATULATIONS on your purchase of a new snow thrower. It has been designed, engineered and man u fac tured to give best possible dependability and per for mance. Should you experience any problem you cannot easily remedy, please contact your nearest authorized service center. We have competent, well-trained tech ni cians and the proper tools to service or repair this unit.
  • Page 3: Product Specifications

    Operation Maintenance and Storage 1. Do not put hands or feet near or under rotating parts. 1. Check shear bolts and other bolts at frequent intervals Keep clear of the discharge opening at all times. for proper tightness to be sure the equipment is in safe working condition.
  • Page 4: Table Of Contents

    TABLE OF CONTENTS SAFETY RULES ............2-3 PRODUCT OVERVIEW ..........7 PRODUCT SPECIFICATIONS ........3 OPERATION ............8-11 CUSTOMER RESPONSIBILITIES ........ 3 MAINTENANCE ............. 12-16 SAFETY AND INSTRUCTIONAL DECALS ....4 STORAGE ..............17 ASSEMBLY ..............5-6 TROUBLESHOOTING ..........18 KNOW YOUR SNOW THROWER READ THIS OWNER'S MANUAL AND ALL SAFETY RULES BEFORE OPERATING YOUR SNOW THROWER.
  • Page 5: Assembly

    ASSEMBLY Setup 4. Pull up and push down slightly on the handle to verify handle is locked into place (Figure 4). NOTE: If handle feels unsecure with the adjustment levers Loose Parts closed, tighten adjustment handle nuts until the handle feels secure.
  • Page 6 ASSEMBLY Installing the Discharge Chute Filling the Engine with Oil Procedure ENGINE See engine manual. 1. Install the chute deflector to the discharge chute using bolts and, washer, nut, deflector knob and cap plunger LUBRICATION (Figure 6). NOTE: SAE 10W30 or SAE 5W30 oil is acceptable for 2.
  • Page 7: Product Overview

    PRODUCT OVERVIEW Product Overview Figure 8 1. Discharge chute 9. Ignition key 2. Chute deflector 10. Chute rotator handle 3. Fuel tank cap 11. Recoil start handle 4. Primer 12. Control bar 5. Electric-start button 13. Lights (if equipped) 14. Drive side cover 6.
  • Page 8: Operation

    OPERATION Operation Checking the Engine Oil Level 1. Move the snowthrower to a level surface. NOTE: Determine the left and right sides of the machine from the normal operating position. 2. Clean around the dipstick (Figure 10). NOTE: Dipstick location may vary depending on engine type.
  • Page 9 OPERATION Starting the Engine 1. Push key in (Figure 11). 2. Move choke lever to left position. 3. Firmly push in the primer 2 times with your thumb, holding the primer in a for a second before releasing it each time. NOTE: Remove your glove when you push in the primer so that air cannot escape from the primer hole.
  • Page 10 OPERATION Engaging the Auger Blades 1. To engage the auger blades, hold the control bar against the handle (Figure 14). Figure 16 1. Rub Area 2. Wear Areas Stopping the Engine Figure 14 1. To stop the engine, pull key out (Figure 17). 1.
  • Page 11 OPERATION Preventing Freeze-up After Use 2. To raise or lower the angle of the chute deflector, loosen both chute deflector knobs on the chute deflector and move the chute deflector up or down to desired position • Let the engine run for a few minutes to prevent moving and retighten knobs (Figure 19).
  • Page 12: Maintenance

    MAINTENANCE Maintenance NOTE: Determine the left and right sides of the machine from the normal operating position. Check for Loose Fasteners Clean / Inspect Snow Thrower Clean / Replace V-Belts Check / Replace Auger Blades and Scraper Bar Check Fuel Lines and Electrical Wires Check Engine Oil Level Change Engine Oil Inspect Muffler...
  • Page 13 MAINTENANCE Inspecting the Auger Blades/ 5. After draining the used oil, return the snowthrower to the operating position. Scraper Bar 6. Install the oil drain plug and torque to 145-150 in-lbs (17 N-m). Before each session, inspect the auger blades for wear. When an auger blade edge or the scraper bar has worn NOTE: Dipstick location may vary depending on engine down have an Authorized Service Dealer replace the...
  • Page 14 MAINTENANCE Servicing the Spark Plug 8. Unsnap top cover by firmly pulling upwards at the rear section of the cover disengaging the three clips (Figure 29). Use a NGK BPR6ES, Champion RN9YC, or BOSCH 9. Shift top cover until fuel tank is clear of the rear upper WR6DC spark plug or equivalent.
  • Page 15 MAINTENANCE 19. Install the spark plug and torque it to 20–22 ft-lb 15. Disconnect the spark plug wire from the spark plug (27–30 N-m). (Figure 31). 20. Connect the spark plug wire to the spark plug 16. Clean around the spark plug. (Figure 31).
  • Page 16 MAINTENANCE Replacing the Drive Belt 4. Install the new auger v-belt and drive pulley, routing it as shown in Figure 35. NOTE: Route the new auger v-belt first around the engine If auger v-belt becomes worn, oil-soaked, excessively pulley, then the idler pulley, and finally around the drive cracked, frayed, or otherwise damaged, replace the belt.
  • Page 17: Storage

    STORAGE Storage ENGINE OIL Drain oil (with engine warm) and replace with clean engine oil. (See “Changing the Engine Oil” section of this man ual). STORING THE SNOWTHROWER Immediately prepare your snow thrower for storage at CYLINDER the end of the season or if the unit will not be used for 30 1.
  • Page 18: Troubleshooting

    TROUBLESHOOTING Troubleshooting See appropriate section in manual unless directed to a service center/department. PROBLEM CAUSE CORRECTION Does not start 1. Safety ignition key is not inserted. 1. Insert safety ignition key. 2. Out of fuel. 2. Fill fuel tank with fresh, clean gasoline. 3.
  • Page 19 SERVICE NOTES...
  • Page 20 04/21/2016 CL...

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