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Walk Behind Lawn Mower
Owner/Operator Manual
Models
911150 – BR21P
911151 – BR21P CARB
911152 – BR21SP
911153 – BR21SP CARB
911154 – BR21SPE
01282100 11/07
ENGLISH
Printed in USA
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TABLE OF CONTENTS Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Storage. . . . . . . . . . . . . . . . . . . . . . . . . 23 Assembly . . . . . . . . . . . . . . . . . . . . . . . . 9 Troubleshooting . . . . . . . . . . . . . . . . . 23 Controls and Features . . . . . . . . . . . . 11 Service Parts . . . . . . . . . . . . . . . . . . . . 24 Operation . . . . . . . . . . . . . . . . . . . . . . . 12 Accessories . . . . . . . . . . . . . . . . . . . . . 24 Maintenance. . . . . . .
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UNAUTHORIZED REPLACEMENT PARTS Use only Ariens replacement parts. Engine Serial Replacing any part on this vehicle with Number Label anything other than an Ariens authorized replacement part may adversely affect the performance, durability, or safety of this unit and may void the warranty. Ariens disclaims liability for any claims or damages, whether warranty, property damage, personal injury or Unit Serial death arising out of the use of unauthorized Number Label replacement parts. T
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SAFETY CAUTION: POTENTIALLY WARNING: This cutting machine HAZARDOUS SITUATION! If not is capable of amputating hands avoided, MAY RESULT in minor or and feet and throwing objects. moderate injury. It may also be Failure to observe the safety used to alert against unsafe instructions in the manuals and practices. on decals could result in serious injury or death. NOTATIONS Slopes are a major factor related to slip and fall accidents. NOTE: General reference information for proper op
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SAFETY DECALS AND Do not operate mower unless guards are in operating position LOCATIONS or entire bagger is attached. ALWAYS replace missing or damaged safety OL4540 decals. Refer to Figure 2 for safety decal locations. Keep safety devices (guards, 1 shields, switches, etc.) in place and working. OL3030 Go across slopes, not up and down. 3 Look down and behind before and while moving backward. Do not park on a slope unless chocked or blocked. 2 Do not allow operation of OM0813 machin
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Read, understand and follow all safety ALWAYS keep hands away from pinch points. practices in Owner/Operator Manual before Fumes from engine exhaust can cause death beginning assembly. Failure to follow or serious injury. DO NOT run engine in an instructions could result in personal injury enclosed area. and/or damage to unit. ALWAYS protect eyes, face, and body with If the operator or the mechanic cannot read adequate safety gear and protective clothes. the manual, it is the owner’s r
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If you strike an object, or if equipment This product is equipped with an internal vibrates abnormally, stop engine at once, wait combustion engine. DO NOT use on or near for moving parts to stop and disconnect wire any unimproved, forest or brush covered land from spark plug. Repair any damage before unless the exhaust system is equipped with a restarting unit. spark arrestor meeting applicable local, state or federal laws. A spark arrestor, if used, Keep rear door closed when engine is
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ALWAYS drain fuel outdoors away from Use extra care when loading or unloading ignition sources. unit onto trailer or truck. ALWAYS shut off engine , and remove key, Ensure all wheel blocks, jack stands and tie and close fuel shutoff valve when transporting downs will support unit during maintenance. unit on a truck or trailer. Replace worn-out mufflers immediately. Avoid Electric Shock. DO NOT disconnect Continued use could result in fire or wire from spark plug while engine is running. expl
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ASSEMBLY 911150, 151, 152, 153 CAUTION: AVOID INJURY. Read and understand the entire Safety section before proceeding. CARTON CONTENTS 1 6 911154 2 3 5 4 OM1706 1. Mower Unit 2. Mulch Cover 3. Side Discharge Chute 4. Mulch Plug 5. Literature Pack 6. Grass Bag Figure 3 Figure 4 ASSEMBLY 1. Remove mower and handlebar from 6. Connect the engine/blade control cable carton. to the engine. 2. Install the handlebars on the pivot pins Route the z-bend cable end into engine attached to the handlebar
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7. Fill engine crankcase with oil. See engine manual. 911150, 151, 152, 153 8. Set-up mower for bagging, side discharge or mulching. See MOWER SET-UP on page 14. NOTE: Bagging is not standard on push models. See ACCESSORIES on page 24 for kit part numbers. 9. Fill fuel tank. See FILLING THE FUEL TANK on page 14. 10. Connect the battery. See BATTERY (electric start models) on page 21. 11. Connect spark plug wire. 12. Check the engine/blade control feature. Try starting the engine without
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CONTROLS AND FEATURES 1 19 18 2 5 3 17 20 6 12 4 1 21 9 3 16 18 2 9 4 6 10 7 17 7 13 12 5 8 9 11 16 9 9 10 13 15 8 9 14 OM1866 Figure 6 1. Engine/Blade Control 14. Side Discharge Chute 2. Wheel Drive Control (911152, 153, 154) 15. Mulch Plug 3. Handlebars 16. Handlebar Adjustment Holes 4. Grass Bag 17. Recoil Starter Handle 5. Rear Door 18. Speed Limiter 6. Fuel Tank and Cap 19. Ignition Switch (911154) 7. Oil Fill/Dipstick 20. Battery (911154) 8. Muffler and Muffler Guard 21. Choke Control (9
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OPERATION CONTROLS AND FEATURES CUTTING HEIGHT ADJUSTMENT See Figure 6 for locations. DANGER: Avoid injury from rotating blade. WARNING: Improper operation ALWAYS shut off engine before can lead to injury. Learn what the adjusting cutting height. controls do and how they work. Thoroughly read and understand entire Operator Manual. CAUTION: On self-propelled models, both rear wheels must be CAUTION: AVOID INJURY. Read set at same height or traction and understand the entire Safety driv
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OPTIONAL CONTROLS Speed Limiter (911152, 153, 154) The speed limiter increases or decreases Primer Bulb (911150, 151, 152, 153) tension in the drive cable, which limits the Push the primer bulb in to add fuel for easier unit’s forward speed. engine start. In the operator’s position, turn the speed limiter to the left to increase maximum Wheel Drive Control (self-propelled forward speed. Turn the speed limiter to the models) right to decrease maximum forward speed. CAUTION: Unit will mov
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MOWER SET-UP CAUTION: DO NOT operate mower unless either side discharge cover or side discharge deflector is installed. Thrown objects may cause damage or injury. Never operate unit with rear door open unless grass bag is in place. CAUTION: If clog or obstruction Ignition Switch (911154) prevents grass flow, release engine/blade control and A removable key operates disconnect spark plug wire before 1 the ignition switch. Turn the attempting to clear away any key to the start positi
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1 2 3 1 2 3 1. Side 3. Mulch Cover 4 Discharge Chute 2. Knob Figure 11 To Mulch See Figure 12 on page 16. 1. Shut off unit. 2. Remove grass bag and side discharge chute, if installed. 3. Make sure mulch cover is closed and secured with knob. 4. Lift rear door and insert mulch plug with the beveled face to the left. There should be no openings between mulch plug and mounting surface of the 1. Rear Door 3. Mounting Pin deck. 2. Bagger Chute 4. Grass Bag 5. Close rear door. Frame NOTE: Re
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5. With engine/blade control held against 2 1 the handlebar, grasp starter handle and pull rope slowly until it pulls harder. This is the compression stroke. Let rope rewind slowly. 6. Pull rope with rapid continuous full arm stroke to start engine. Allow rope to rewind slowly. IMPORTANT: DO NOT let starter handle snap against bracket. 7. Repeat steps 4 and 6 until engine starts. (If engine does not start, see TROUBLESHOOTING on page 23.) Electric Start (911154) Recoil may also be used
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MAINTENANCE CHECK WHEEL DRIVE CONTROL CAUTION: AVOID INJURY. Read (self-propelled models) and understand the entire Safety The unit must stop quickly and completely section before proceeding. when the control is released. Adjust or repair if necessary. See WHEEL DRIVE CONTROL Ariens Dealers will provide any service, parts ADJUSTMENT (self-propelled models) on or adjustments which may be required to page 22. keep your unit operating at peak efficiency. Should engine require service, con
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3. Check mower blade balance. Sharpen the Mower Blades Slide mower blade on an unthreaded bolt. A balanced blade should remain in CAUTION: DO NOT sharpen a horizontal position. If either end of mower blades while on unit. An mower blade moves downward, sharpen imbalanced mower blade will cause excessive vibration and the heavy end until blade is balanced eventual damage to unit. Check (Figure 14). mower blade balance before 4. Install mower blade on unit. reinstalling blades. 5. Tighte
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CHECK SPARK PLUG CHECK MUFFLER Spark plug should be replaced every 100 Check muffler for debris, cracks, wear, or hours of operation or each year. other damage. NOTE: Loose spark plug wire terminals can cause sparking. Replace terminal if CAUTION: Replace worn-out damaged. mufflers immediately. Continued use could result in fire or CHECK ENGINE COOLING explosion. WARNING: HOT SURFACES can cause death or serious injury. DO NOT TOUCH parts which are hot from operation. ALWAYS allow parts
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DRIVE BELT REPLACEMENT 1 2 (self-propelled models) To remove drive belt: 1. Disconnect spark plug wire from spark plug. 2. Remove transmission cover. 3. Disconnect idler return spring from idler arm. See Figure 16. 4. Disconnect the wheel drive cable from transmission mount, and then disconnect drive cable spring from idler arm. 5. Remove belt from transmission input pulley and transmission idlers, and then push the belt out through the belt 3 channel. 4 6 5 6. Put the unit in the servi
