Sno-Thro ® Operator’s Manual Manuel du Utilisateur Platinum Series Models 921050 – Platinum SHO 24 (SN 100000 +) 921051 – Platinum SHO 30 (SN 100000 +) 921057 – Platinum SHO 28 RapidTrak (SN 100000 +) E10 ENGLISH FRANÇAIS 05135900C • 2/19 Printed in USA
TABLE OF CONTENTS WELCOME . . . . . . . . . . . . . . . . . . . . . . 1 Register Your Product!. . . . . . . . . . . . . . 1 SAFETY. . . . . . . . . . . . . . . . . . . . . . . . . 2 Practices & Laws . . . . . . . . . . . . . . . . . . Emission Control System. . . . . . . . . . . . Required Operator Training . . . . . . . . . . Safety Alert Symbol . . . . . . . . . . . . . . . . Signal Words . . . . . . . . . . . . . . . . . . . . . Safety Decals. . . . . . . . . . . . . . . . . . . . . Safety Rules. . . . .
WELCOME Congratulations on your purchase and welcome to the Ariens family! Every machine in the Ariens lineup is designed for long-lasting and unsurpassed performance. We are confident your machine will be part of your family for many years to come. Have Questions or Need Assistance? www.ariens.com A parts manual for your unit is available for free download or purchase at www.ariens.com. REGISTER YOUR PRODUCT! MANUALS It is extremely important to register your product at time of purchase.
SAFETY WARNING: AVOID INJURY. This snow thrower is capable of crushing or amputating body parts. Failure to observe the safety instructions in the manuals and on decals could result in serious injury or death. ALWAYS disengage auger, stop unit and engine, remove key and allow moving parts to stop before leaving operator’s position. Read these safety rules and follow them closely.
4. Notice Safety Decal Descriptions NOTICE: Indicates information or procedures that are considered important but not hazard related. If not followed, property damage could result. 1. CAUTION! Danger! 5. Important IMPORTANT: Indicates general reference information worthy of special attention. SAFETY DECALS The safety decals on your machine are visual reminders of the important safety information in this manual. All messages on your unit must be fully understood and carefully followed.
SAFETY RULES 2. DANGER! The following safety instructions are based on the B71.3 specifications of the American National Standards Institute in effect at the time of production. Danger! Training ROTATING PARTS! Only use clean-out tool to clear blockages. NEVER use your hands. High-speed auger/impeller rotates below discharge opening. Wait for all moving parts to stop before removing clogs or servicing.
Handle fuel with care; it is highly flammable. • Use an approved fuel container. • Never add fuel to a running engine or hot engine. • Fill fuel tank outdoors with extreme care. Never fill fuel tank indoors. • Never fill containers inside a vehicle or on a truck or trailer bed with a plastic liner. Always place containers on the ground, away from your vehicle, before filling. • When practical, remove gas-powered equipment from the truck or trailer and refuel it on the ground.
Maintenance and Storage Disengage attachment when not in use and when traveling from one work area to another. Secure unit so it will not tip over during maintenance. Disengage power to the auger / impeller when snow thrower is transported or not in use. Before cleaning, removing clogs or making any inspections, repairs, etc., disengage clutch(es), stop engine, remove key, allow moving parts to stop and hot parts to cool.
Personal Protection Never fill or drain fuel tank indoors. Do not operate the equipment without wearing adequate winter garments. Avoid loose fitting clothing that can get caught in moving parts. Wear footwear that will improve footing on slippery surfaces. Replace fuel cap securely and clean up spilled fuel. Wear adequate safety gear, including safety glasses with side shields and protective gloves. Do not wear loose clothing or jewelry, and tie back hair that may get caught in rotating parts.
CONTROLS & FEATURES 15 26 25 24 27 8 12 3 13 23 6 4 8 7 22 20 19 14 28 11 16 17 3 21 5 2 1 9 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. Engine Key Primer Bulb Fuel Tank and Cap Fuel Valve Electric Start Button Choke Control Knob Throttle Control Knob Oil Fill / Dipstick Oil Drain Recoil Starter Handle Speed Selector Lever Auger Impeller Shear Bolt (2) 10 8 Figure 3 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28.
CHOKE CONTROL KNOB WARNING: Read and understand the Safety section before proceeding. See Figure 6. Controls airflow to the engine. Off See Figure 3 for all controls and features locations. ENGINE KEY See Figure 4. Controls power to the engine. The key cannot be removed when in run position. On Figure 6 THROTTLE CONTROL KNOB See Figure 7. Controls engine speed. Run Idle Stop Run Figure 7 SPEED SELECTOR LEVER Figure 4 See Figure 8. Controls the speed of forward and reverse travel.
ATTACHMENT CLUTCH LEVER (RIGHT SIDE) DISCHARGE CHUTE ROTATION LEVER See Figure 9. Controls auger / impeller movement. See Figure 11. Rotates discharge chute to control snow discharge. Pull lever back to unlock chute, move lever left or right to desired position, and then push lever forward to lock chute in place. Figure 9 TRACTION DRIVE CLUTCH LEVER (LEFT SIDE) Figure 11 See Figure 10. Allows unit to travel forward and in reverse. DISCHARGE CHUTE DEFLECTOR LEVER See Figure 12.
SKID SHOE EMERGENCY STOPPING Controls the distance between the scraper blade and the surface. Rotates to bring snow into impeller. 1. Release both clutch levers. 2. Turn engine key to stop position and remove key. 3. Wait for all moving parts to stop before leaving operator’s position. IMPELLER BEFORE OPERATING UNIT Throws snow out discharge chute. IMPORTANT: Register your product! See Register Your Product! on page 1.
b. Pull handle firmly and quickly with a rapid, continuous full-arm stroke. Repeat until engine starts. If engine does not start, see Troubleshooting on page 23. c. Let handle rewind slowly after engine starts. DO NOT let handle snap against engine. 9. Gradually turn choke off as engine warms. 10. Electric Start: Disconnect power cord from outlet and then from starter. Wheel Operation Track Operation OPERATE UNIT 1. Rotate discharge chute and move deflector to desired positions. 2. Select desired speed.
Check Attachment Drive Clutch Operation • Check Traction Drive Clutch Operation • Check Dual Handle Interlock • Check Fasteners • MAINTENANCE WARNING: Read and understand the Safety section before proceeding. Your Ariens dealer can provide service and adjustments to keep your unit operating at peak efficiency. Contact an authorized engine manufacturer’s service center for engine service. SERVICE POSITION See Figure 15. WARNING: AVOID INJURY.
ADD FUEL STABILIZER CHECK ENGINE OIL Add fuel stabilizer to gasoline at time of purchase to help ensure the best performance over the life of that fuel. See Short Term on page 25. NOTICE: Engine oil level must be maintained at correct level or engine damage may occur. Refer to engine manual. CHECK DUAL HANDLE INTERLOCK Refer to engine manual. CHANGE ENGINE OIL 1. Stop engine. 2. Engage attachment clutch and then the traction drive clutch. 3. Release the attachment clutch lever.
IMPORTANT: DO NOT over torque. Measurements are given in pound force inches (lb-in) and not pound force foot (lb-ft). Incorrect torquing and failure to install or correctly torque seal washer may void gearcase warranty. Model 921057 1 LUBRICATE UNIT Ariens recommends using Ariens Hi-Temp Grease or equivalent (see Service Parts) to lubricate fittings. Lubricate each season or every 25 hours of operation. IMPORTANT: Wipe each fitting clean before and after lubrication.
Models 921050, 921051 2. Apply grease at the grease zerks. See Figure 22. Figure 22 Figure 19 3. Hand rotate auger on auger shaft. 4. Align shear bolt holes in auger with shear bolt holes in shaft. 5. Insert bolts through holes. 6. Secure bolts with nuts. 7. Tighten bolts to 7.9 N•m – 16.5 N•m (5.8 lb-ft – 12.2 lb-ft). If a torque wrench is unavailable, tighten bolts until they no longer spin freely. DO NOT overtighten. Figure 20 Lubricate Auger Shaft 1. Remove shear bolt nuts and bolts.
REPLACE SHEAR BOLTS ADJUSTMENTS WARNING: AVOID INJURY. Read and understand the Safety section before proceeding. Replace shear bolts if obstruction stops auger rotation and shear bolts break. See Figure 24. ADJUST SCRAPER BLADE The auger housing may be damaged if blade wears down too much. 1. Tip unit back onto handlebar, support auger housing and loosen nuts retaining blade. 2. Lower blade and tighten nuts. 3. Adjust skid shoes. See Adjust Skid Shoes on page 17.
If deflector does not follow full range of travel: 1. Position deflector control in the rear-most position. 2. Adjust nuts on chute cable. See Figure 26. • To adjust deflector lower, loosen lower nut and tighten upper nut. • To adjust deflector higher, loosen upper nut and tighten lower nut. 1 3 1 2 1. 2. 3. 4. 2 3 4 Discharge Chute Gear Cover Rear Adjustment Nut Forward Adjustment Nut Lock Arm Figure 27 ADJUST SPEED SELECTOR LEVER 1. Chute Cable 2. Upper Adjustment Nut 3.
1 2 1 3 4 3 1. 2. 3. 4. 2 1. Attachment Clutch Cable 2. Cable Adjustment Barrel 3. Jam Nut Figure 29 Shift Rod Adjustment Pivot Pin Speed Selector Arm Hairpin Figure 28 ADJUST ATTACHMENT CLUTCH & BRAKE 5. With the attachment clutch disengaged, make sure auger idler arm lightly touches the frame. See Figure 30. WARNING: AVOID INJURY. Improper adjustment could result in unexpected movement of auger and impeller causing death or serious injury.
Check Attachment Idler Arm Roller Clearance 1. Place unit in service position and remove bottom cover. 2. Engage attachment clutch and check the clearance between the frame and plastic roller on the lower end of the attachment idler arm. Roller should be 12.7 mm – 22.2 mm (1/2" – 7/8") from the frame. See Figure 31. 2 1 3 2 1. Idler 2. Belt 3. Pulley Check Attachment Brake 1 1. Attachment Idler Arm Roller 2. Frame Figure 31 Figure 32 Measure here. • If roller is 12.7 mm – 22.
• If there is less than 1.6 mm (1/16") gap, loosen idler adjustment nut and move idler away from belt or pulley. Position idler to achieve a 1.6 mm (1/16") minimum brake pad gap and a 12.7 mm – 22.2 mm (1/2" – 7/8") gap between the plastic roller and the frame. See Figure 32. 1 2 3 IMPORTANT: If adjustments cannot be brought into specified ranges, see your dealer for repair. Check Belt Finger Clearance See Figure 34.
ADJUST HEIGHT ADJUSTMENT CABLE Model 921057 See Figure 37. NOTICE: Make sure height-adjuster lock finger is fully engaged before making adjustments. 1. Loosen jam nuts on cable adjustment barrel. 2. Tighten right jam nut to remove slack between adjustment barrel and cable eyelet. 3. Tighten left jam nut. 1 6 1. 2. 3. 4. 5. 6.
TROUBLESHOOTING Problem Probable Cause Engine key in stop position. Choke is off. Fuel valve is closed. Fuel tank is empty. Engine is not primed. Correction Turn engine key to run position. See Engine Key on page 9. Turn choke control knob to on position. See Choke Control Knob on page 9. Open valve. See Fuel Valve on page 9. Fill tank with fuel. See Before Operating Unit on page 11. If engine is cold, press primer bulb three times and start engine. Do not prime a warm engine. See Primer Bulb on page 9.
TROUBLESHOOTING Problem Probable Cause Friction disc is worn. Correction Replace friction disc. Refer to the Service Manual for your unit. Traction drive cable is not Remove slack from cable. See Adjust Unit does not adjusted correctly. Traction Drive Clutch on page 21. drive forward or Traction belt is not functioning. Repair or replace traction drive belt. Refer in reverse. to the Service Manual for your unit. Speed selector is not adjusted Adjust speed selector. See Adjust Speed correctly.
LONG TERM STORAGE WARNING: AVOID INJURY. Read and understand the Safety section before proceeding. SHORT TERM 1. Run auger / impeller for a few minutes to remove loose or melting snow to prevent impeller from freezing. 2. Tighten all hardware to correct specifications. 3. Inspect unit for visible signs of wear or damage. Repair as needed. 4. Apply a light layer of oil or anti-rust compound on bare metal areas. 5. Prepare fuel system for storage.
SPECIFICATIONS Model Number 921050 921051 921057 Platinum 24 SHO Platinum 30 SHO Platinum 28 SHO RapidTrak Gross Torque* – N•m (lbf-ft) 23.1 (17.0) 27.1 (20.0) 23.1 (17.0) Displacement – cm3 (in3) 369.0 (22.5) 414.0 (25.3) 369.0 (22.5) Description Engine Ariens AX Maximum RPM – No Load 3600 ± 100 Electric Start 120V Fuel Tank Capacity – liter (qt) 3.0 (3.2) Chute Chute Rotation Angle 200° Rotation Control 2.
Warran ty Outdoor Power Equipment Limited Warranty AriensCo warrants to the original purchaser that Ariens brand products purchased on or after 3/16/2018 will be free from defects in material and workmanship for the time period noted in the chart below. Equipment put to personal use around a single household or residence is considered “Residential Use.” Equipment put to any business use (agricultural, commercial, or industrial) or used at multiple locations is considered “Commercial Use.
Exclusions and Limitations The charts below detail special exclusions and limitations to this warranty. Warranty Term Exclusions Warranty Period Air filters, auger paddles, brake arms, brake linings, brake shoes, brushes, cutters, fuel filters, headlights, knives, light bulbs, lubricants, mower blades, oil, oil filters, spark plugs, scraper blades, shear bolts and skid shoes. Components are not covered under warranty. Hydro-Gear Transaxle Limitation See Hydro-Gear warranty.
Engines The chart below details engine warranty information. Engine warranty terms may vary from the specific terms of this warranty. If inconsistent, the terms of the engine warranty shall apply to the engine and its component parts. Engine Manufacturer Detail Ariens AX Ariens- and Yamaha-branded engines are warranted by the manufacturer and the warranty is administrated by AriensCo. Refer to the engine manual for warranty statements.
Disclaimer AriensCo may from time to time change the design of its products. Nothing contained in this warranty shall be construed as obligating the AriensCo to incorporate such design changes into previously manufactured products, nor shall such changes be construed as an admission that previous designs were defective.
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