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Walk Behind Lawn Mower
Owner/Operator Manual
Models
911102 - PRO21SCH
911132 - LM21
911133 - LM21S
911134 - LM21SW
911139 - LM21S
911141 - PRO21SCH
ENGLISH
FRANÇAIS
ESPAGNOL
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here. 01270600C 2/06
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Printed in USA
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TABLE OF CONTENTS Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Storage. . . . . . . . . . . . . . . . . . . . . . . . . 22 Assembly . . . . . . . . . . . . . . . . . . . . . . . . 8 Troubleshooting . . . . . . . . . . . . . . . . . 23 Controls and Features . . . . . . . . . . . . . 9 Service Parts . . . . . . . . . . . . . . . . . . . . 24 Operation . . . . . . . . . . . . . . . . . . . . . . . 10 Accessories . . . . . . . . . . . . . . . . . . . . . 24 Maintenance. . . . . . .
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PRODUCT REGISTRATION DEALER DELIVERY The Ariens dealer must register the product Dealer should: at the time of purchase. Registering the 1. Check that all assembly and product will help the company process adjustments have been properly warranty claims or contact you with the latest completed. service information. All claims meeting 2. Fill out Original Purchaser Registration requirements during the limited warranty Card and return the card to Ariens. period will be honored, whether or no
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SAFETY DECALS AND CAUTION: POTENTIALLY LOCATIONS HAZARDOUS SITUATION! If not avoided, MAY RESULT in minor or ALWAYS replace missing or damaged safety moderate injury. It may also be decals. Refer to Figure 4 for safety decal used to alert against unsafe locations. practices. 1 NOTATIONS NOTE: General reference information for 3 proper operation and maintenance practices. IMPORTANT: Specific procedures or information required to prevent damage to unit or attachment. PRACTICES AND LAWS
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Clear work area of stones, sticks, wire and Keep safety devices (guards, foreign objects which might be picked up and shields, switches, etc.) in place thrown. Tall grass can hide obstacles. and working. Know the work area. Stay alert for holes, OL3030 rocks, rough terrain and hidden hazards. Keep away from drop-offs, ditches, or � Go across slopes, not up and down. embankments that could cause operator to � Look down and behind before and lose footing or control of unit. while moving ba
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Keep safety devices or guards in place and Use extra care when approaching blind functioning properly. NEVER modify or corners, shrubs, trees, or other objects which remove safety devices. may obscure vision. Read, understand, and follow all instructions DO NOT mow at too fast a rate. DO NOT in the manual and on the machine before change engine governor setting or over- starting. Understand: speed the engine. � How to operate all controls Do not operate mower on gravel or loose material such
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Keep the nozzle in contact with the rim of the Keep equipment in good condition. fuel tank or container opening at all times until Maintain or replace safety and instruction fueling is complete. Do not use a nozzle lock- labels, as necessary. open device. Follow engine manufacturer’s safety Check fuel supply before starting engine. instruction when servicing engine. DO NOT fill gasoline tank indoors, when Check all hardware at regular intervals, engine is running, or while engine is hot. es
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ASSEMBLY ASSEMBLY CAUTION: AVOID INJURY. Read 1. Unfold and adjust handlebar. See and understand the entire Safety HANDLEBAR HEIGHT on page 18. section before proceeding. NOTE: DO NOT bend the speed control rod (if equipped) when unfolding the handlebars. CARTON CONTENTS 2. Fill engine crankcase with oil. See engine manual. 1 3. Set-up mower for bagging, side 2 discharge or mulching. See MOWER SET-UP on page 13. 4. Fill fuel tank. See FILLING THE FUEL TANK on page 13. 5. Connect spark pl
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CONTROLS AND FEATURES 2 22 1 2 8 1 5 3 4 21 5 20 6 21 7 12 3 20 15 14 19 19 13 13 15 13 2 6 11 7 3 9 13 11 1 10 16 10 5 9 21 11 6 20 19 13 13 16 18 7 10 17 13 14 15 OM1866 Figure 6 1. Engine/Blade Control 14. Primer Bulb (911132, 133, 134, 139, 141) 2. Wheel Drive Control (911102, 133, 134, 139, 141) 15. Air Filter 3. Adjustable and Folding Handlebars 16. Side Discharge Cover (911132, 133, 134, 139, 141) 4. Swivel Wheel Lock (911134) 17. Side Discharge Deflector (911132, 133, 5. Grass Bag 13
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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 drive and understand the entire Safety
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Rear Low Low 1 High High 1 Rear Low High 1 Front 2 Front 1. Cutting Height Lever 3 Figure 7 OM0165 1. Cutting Height Lever 2. Height Adjuster Pin Swivel Wheel Models (911134) 3. Key Ring To change front wheel cutting height, insert height adjuster pin into the holes that match Figure 8 the desired cutting height and fasten with key OM1270 ring (Figure 8). To change rear wheel cutting height, move OPTIONAL CONTROLS cutting height levers one notch at a time to Primer Bulb (911132, 133, 134, 13
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Speed Control (self-propelled Swivel Wheel Lock (911134) models) Speed control rod changes the mower’s CAUTION: Avoid loss of control. forward travel speeds. Lock swivel wheels when mowing on a slope or hill. Do not mow on steep slopes. High –Push rod all the way forward. To hold wheel straight: 1. Push swivel wheel lock forward. 2. Push unit forward until wheel locks in place. To allow wheel to swivel: OM0480 Low –Pull rod all the way 1. Pull swivel wheel lock back. rearward. Start mowin
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911141 To Bag CAUTION: Check grass bag Fuel shutoff valve open. frequently for wear or deterioration. Replace worn or damaged bag with Ariens original equipment replacement bag only. 1. Shut off unit. 2. Install side discharge cover. 3. Lift rear door. Fuel shutoff valve closed. 4. Hook grass bag frame on mounting flange. 5. Lower rear door. If necessary, lift rear of grass bag frame to lock in position. There should be no openings between bag and mounting surface after installing bag. I
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EMERGENCY STOPPING Shut Off 1. Release wheel drive control and allow To stop the mower in an emergency: unit to stop completely (self-propelled 1. Release the engine/blade control. models). 2. Release the wheel drive control (self- 2. Release engine/blade control. propelled models). 3. Set throttle control to "Stop." (911102) 3. Allow all moving parts to stop before leaving operator’s position. Mowing Tips Cut grass when it is dry. STARTING AND SHUT OFF Keep mower blades sharp. Do not set cu
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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 20. keep your unit operating at peak efficiency. Should engine require service, con
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To install blade: DO NOT Sharpen to This Pattern 1. Replace blade, flat washer, lock washer and bolt on shaft. 2 1 2. Torque bolt to 37.5 - 50 lbf-ft (51-68 N�m) (bolt should fully compress lock washer). 3. Connect spark plug wire. Sharpen the Mower Blades 3 CAUTION: DO NOT sharpen mower blades while on unit. An DISCARD If More imbalanced mower blade will 2 Than 1/2 in. (1.27 cm) cause excessive vibration and eventual damage to unit. Check mower blade balance before reinstalling blade
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CHECK DRIVE BELT (self- Swivel Wheels (911134) See Figure 12. propelled models) Use Sten Mix Hi-Temp Grease or equivalent Check drive belt and replace if worn or on the lube fittings. Order P/N: 00036800 - 3 damaged. See DRIVE BELT pack of 3 oz. cartridges. REPLACEMENT (self-propelled models) on page 19. CHECK FASTENERS Check all fasteners for proper tightness. Pay Lube Fitting special attention to blade hardware and all guards, shields and safety devices. CHECK AIR CLEANER See engine man
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SERVICE AND ADJUSTMENTS CAUTION: AVOID INJURY. Read and understand the entire Safety Hole section before proceeding. SERVICE POSITION Put unit into service position for easy access to underneath the deck. CAUTION: Avoid fuel spills. Follow steps below to help prevent fuel spills. If fuel leaks into air cleaner, replace air cleaner. ALWAYS clean up any spilled fuel. 1. Place unit on a flat, level surface. Pin 2. Disconnect spark plug wire. 3. Remove fuel cap, place a piece of OM1800 plas
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DRIVE BELT REPLACEMENT ENGINE/BLADE CONTROL (self-propelled models) ADJUSTMENT (911134) To remove drive belt: To adjust engine/blade control: 1. Disconnect spark plug wire. 1. Loosen cable nuts away from bracket. 2. Set the right rear wheel to its lowest cutting height, and the left rear wheel to the third cutting height. This position provides clearance between friction disc and drive sheave. 3. Remove belt from the idler, then the drive sheave, and finally, the engine pulley
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WHEEL DRIVE CONTROL ADJUSTMENT (self-propelled 5. Tighten upper models) cable nut until bracket is secure See Figure 16. between cable NOTE: When the wheel drive control is nuts. disengaged, the gap between the friction disc OM1030 and the aluminum drive plate should be approximately .030" (0.7mm). See Figure 16. 6. Engage engine/blade control. Measure Friction Disc distance between middle of z-bend and cable bracket. Measurement should be as shown below. Aluminum Drive Briggs Engin
