Walk Behind Lawn Mower Owner/Operator Manual Models 911086 - LM21 911087 - LM21S ENGLISH FRANÇAIS ESPAÑOL Transfer model & serial number label from product registration here. Coller l’autocollant du modèle et du numéro de série dans cet encadré. Transferir aquí la etiqueta del modelo y número de serie del registro del producto.
CONTROLS AND FEATURES 13. Trous de réglage du guidon 11 1 10 9 12 7 2 8 6 13 6 5 4 3 Figure 1 ENGLISH 1. Engine Control 2. Speed Control Rod (Selfpropelled) 3. Primer 4. Side Discharge Cover 5. Side Discharge Deflector 6. Cutting Height Levers (2 Rear Wheel Adjusters, 2 Front Wheel Adjusters) 7. Rear Door 8. Adjustable and Folding Handlebars 9. Grass Bag 10. Recoil Starter Handle 11. Wheel Drive Control (Self-Propelled) 12. Mulchmaster™ Plug 13. Handlebar Adjustment Holes OM1410 FRANÇAIS 1.
TABLE OF CONTENTS Controls and Features . . . . . . . . . . . . . 3 Storage . . . . . . . . . . . . . . . . . . . . . . . . . 18 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Troubleshooting . . . . . . . . . . . . . . . . . 19 Assembly . . . . . . . . . . . . . . . . . . . . . . . . 9 Service Parts . . . . . . . . . . . . . . . . . . . . 20 Operation . . . . . . . . . . . . . . . . . . . . . . . 10 Accessories . . . . . . . . . . . . . . . . . . . . . 20 Maintenance . . . . . . . .
5. Instruct customer on controls and operation of unit. Discuss and emphasize the Safety Rules. Give customer Owner/Operator, Parts, and Engine manuals. Advise customer to thoroughly read and understand them. DISCLAIMER Ariens reserves the right to discontinue, make changes to, and add improvements upon its products at any time without public notice or obligation.The descriptions and specifications contained in this manual were in effect at printing. Equipment described within this manual may be optional.
SAFETY DECALS AND LOCATIONS ALWAYS replace missing or damaged safety decals. Refer to Figure 3 for safety decal locations. CAUTION PRECAUCION ATTENTION Leer el manual del operador. Mantenga la unidad alejada de los niños u otras personas cuando esté en funcionamiento. Nunca dirija la descarga hacia otras personas, a que los objetos lanzados pueden provocar lesiones.
SAFETY RULES If unit is to be used by someone other than original purchaser; loaned, rented or sold, ALWAYS provide this manual and any needed safety training before operation. Read, understand and follow all safety practices in Owner/Operator Manual before beginning assembly. Failure to follow instructions could result in personal injury and/or damage to unit. ALWAYS disconnect wire from spark plug before assembly. Unintentional engine start up can cause death or serious injury.
Stop engine before removing and emptying grass bag. When mulching or bagging, ALWAYS install discharge cover. When side discharging, ALWAYS install side discharge deflector. ALWAYS shut off engine, allow blade to stop and disconnect spark plug wire before clearing clogs or cleaning unit. Check grass bag for wear, damage, and/or deterioration. Replace only with Ariens original equipment replacement parts for safety.
Replace worn-out mufflers immediately. Continued use could result in fire or explosion. Sharp edges can cut or amputate fingers or a hand. Wrap blade or wear sturdy gloves to service. Use only replacement parts designed for your unit. See your Ariens Dealer. Allow engine to cool before storing in any enclosure. ALWAYS clean unit before extended storage. See engine manual for proper storage. DO NOT store unit inside a building with fuel in the fuel tank where any ignition sources are present.
1 3 2 1. Speed Control Rod 2. Hair Pin 3. Speed Control Bell Crank Figure 5 OM0300 OPERATION CONTROLS AND FEATURES Handlebar See Figure 1 for locations. Adjust handlebar to a safe and comfortable height. Refer to Service and Adjustments for instructions. WARNING: Improper operation can lead to injury. Learn what the controls do and how they work. Thoroughly read and understand entire Operator Manual. Recoil Starter Handle When pulled, handle will turn engine over.
High Low Low High 1 1 Rear 1. Cutting Height Lever Front Figure 6 Speed control rod should hold the desired speed. If not, adjust speed control bell crank (See Service and Adjustments). Cutting Height Settings Chart Notch Cut grass length LOW 1" (25 mm) 2 1-3/8" (35 mm) 3 1-3/4" (45 mm) 4 2-1/4" (57 mm) 5 2-3/4" (70 mm) HIGH 3-1/4" (83 mm) OM0165 WHEEL DRIVE CONTROL (selfpropelled models) CAUTION: Unit will move forward at engine start if wheel drive control is engaged.
FILLING FUEL TANK Grass Bag Removal CAUTION: AVOID INJURY. Read and understand the entire Safety section before proceeding. To add fuel to fuel tank: 1. Put unit in open or well-ventilated area. 2. Stop engine and allow to cool. 3. Clean fuel cap and surrounding area. 4. Remove cap. IMPORTANT: See engine manual for correct type and grade of fuel. 5. Fill fuel tank. (See Specifications for tank capacity.) 6. Replace fuel cap and tighten. 7. ALWAYS clean any spilled fuel. 1. Shut off unit. 2.
2. For engines with a primer, push primer bulb 2 or 3 times for a cold engine. NOTE: It is unnecessary to prime or choke a warm engine. 3. With engine/blade control held against the handlebar, grasp starter handle and pull rope slowly until it pulls harder. This is the compression stroke. Let rope rewind slowly. 4. 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. 5.
CHECK WHEEL DRIVE CONTROL (self-propelled models) 2 3 The unit must stop quickly and completely when the control is released. Adjust or repair if necessary. See Service and Adjustments. 1 CHECK GRASS BAG Check grass bag frequently for wear or deterioration. Replace worn or damaged bag with Ariens original equipment replacement bag only. 1 OM0235 Replace CLEAN UNIT Before each use clean unit, muffler and engine surfaces of debris, oil or fuel spills to ensure proper cooling and prevent fires.
NOTE: Loose spark plug wire terminals can cause sparking. Replace terminal if damaged. CHECK ENGINE COOLING WARNING: HOT SURFACES can cause death or serious injury. DO NOT TOUCH parts which are hot from operation. ALWAYS allow parts to cool. Every 100 hours of operation or yearly (more often if conditions require) remove blower housing and clean cooling fins. See engine manual for instructions. CHECK MUFFLER Check muffler for debris, cracks, wear, or other damage.
ENGINE/BLADE CONTROL ADJUSTMENT 4. Tighten lower cable nut to 1/8" (3mm) below bracket. Release z-bend bracket. To adjust engine/blade control: 1. Loosen cable nuts away from bracket. 1/8 (3mm ) OM1020 5. Tighten upper cable nut until bracket is secure between cable nuts. OM1030 6. Engage engine/blade control. Measure distance between middle of z-bend and cable bracket. Measurement should be as shown below. 1.325"-1.788" (3.4cm - 4.5cm) OM1010 2.
DRIVE BELT REPLACEMENT (self-propelled models) WHEEL DRIVE CONTROL ADJUSTMENT (self-propelled models) See Figure 11. 2 6 1-1/2" to 2" (3.8 to 5cm) 1 2 4 3 4 3 5 1 1. Blade 2. Bolt, Lock Washer & Flat Washer 3. Drive Belt 4. Idler 5. Drive Sheave 6. Engine Pulley Figure 10 1. 2. 3. 4. Traction Cable Handlebar Indentation Cable Nuts Wheel Drive Control OM0290 Figure 11 OM1250 To remove drive belt: 1.
SPEED CONTROL BELL CRANK (self-propelled units) 1 The speed control bell crank holds the speed control rod in position after a speed has been set. The spring washers may become loose with normal wear. If the speed control rod does not stay firmly in position, adjust the speed control bell crank. See Figure 12. To adjust: 1. Remove cover, fully compress the helical spring lock washers with lock nut and then back lock nut off, one quarter turn. 2.
TROUBLESHOOTING PROBLEM PROBABLE CAUSE Engine will not start 1. Fuel tank empty or low. 2. Spark plug wire loose or off. 3. Engine/Blade control cable detached, broken, or not adjusted properly. 1. Check fuel level. Fill tank if necessary. 2. Check connection. 3. Check cable. Adjust, repair or replace as necessary. Engine is difficult to restart 1. Mower clogged with grass. 1. Clear clippings from under mower. (Allow the mower to clear clippings before shutting off engine.) Cut is poor 1.
SERVICE PARTS Always use genuine Ariens parts to keep your mower running like new. Mower Model 911086 ACCESSORIES See your authorized Ariens dealer to add these optional accessories.
SPECIFICATIONS Model Number Description Length - in (cm) Height - in (cm) Width - in (cm) Actual Weight - lbs (kg) Cutting Width Cutting Height - in. (cm) 911086 LM21 61.5 (156) 38 (96,5) 23 (58,4) 77 (35) 93 (42,27) 21 (53,3) 6 Positions: 1.00 - 3.25 (2,5 - 8,3) Briggs & Stratton Quantum 3.6 (2,6) Engine, 4 cycle Engine Power Max - HP (kw) Max Rotation Speed of Cutting Edge - RPM (min-1) Governed RPM 3100 3000 +/- 100 12 (197) Displacement Cu. In.
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Ariens Company 655 West Ryan Street P.O. Box 157 Brillion, WI 54110-0157 920-756-2141 Fax 920-756-2407 www.ariens.
