Walk Behind Lawn Mower Owner/Operator Manual Manuel Du Propriétaire/Utilisateur Model 911271 – Pro21 ENGLISH FRANÇAIS 01326700 2/10 Printed in USA
TABLE OF CONTENTS Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Storage . . . . . . . . . . . . . . . . . . . . . . . . . 22 Assembly . . . . . . . . . . . . . . . . . . . . . . . . 9 Troubleshooting . . . . . . . . . . . . . . . . . 23 Controls and Features . . . . . . . . . . . . 10 Service Parts . . . . . . . . . . . . . . . . . . . . 24 Operation . . . . . . . . . . . . . . . . . . . . . . . 11 Accessories . . . . . . . . . . . . . . . . . . . . . 24 Maintenance. . . . . . . . .
DEALER DELIVERY • Record Unit Model and Serial numbers here: • Record Engine Model & Serial numbers here: PRODUCT REGISTRATION The Ariens dealer must register the product at the time of purchase. Registering the product will help the company process warranty claims or contact you with the latest service information. All claims meeting requirements during the limited warranty period will be honored, whether or not the product registration card is returned.
SAFETY CAUTION: POTENTIALLY HAZARDOUS SITUATION! If not avoided, MAY RESULT in minor or moderate injury. It may also be used to alert against unsafe practices. WARNING: This cutting machine is capable of amputating hands and feet and throwing objects. Failure to observe the safety instructions in the manuals and on decals could result in serious injury or death. Slopes are a major factor related to slip and fall accidents. Operation on all slopes requires extra caution.
SAFETY DECALS AND LOCATIONS Keep safety devices (guards, shields, switches, etc.) in place and working. ALWAYS replace missing or damaged safety decals. Refer to Figure 2 for safety decal locations. OL3030 1 3 • • • • Go across slopes, not up and down. Look down and behind before and while moving backward. Do not park on a slope unless chocked or blocked. Do not allow operation of machine by untrained personnel. 2.
Complete a walk around inspection of unit and work area to understand: • work area • your unit • all safety decals. Clear work area of stones, sticks, wire and foreign objects which might be picked up and thrown. Tall grass can hide obstacles. Know the work area. Stay alert for holes, rocks, rough terrain and hidden hazards. Keep away from drop-offs, ditches, or embankments that could cause operator to lose footing or control of unit. ALWAYS be aware of traffic when operating along streets or curbs.
Check grass bag for wear, damage, and/or deterioration. Replace only with Ariens original equipment replacement parts for safety. To reduce fire hazard and overheating, keep equipment free of grass, leaves, debris or excessive lubricants. Use extra care when approaching blind corners, shrubs, trees, or other objects which may obscure vision. DO NOT mow at too fast a rate. DO NOT change engine governor setting or overspeed the engine. Do not operate mower on gravel or loose material such as sand.
Charge batteries in an open, well-ventilated area, away from spark and flames. Unplug charger before connecting or disconnecting battery. Wear protective clothing and use insulated tools. Accidental engine start up can cause death or serious injury. Except where specifically recommended, ALWAYS stop engine, remove key (electric start models), wait for moving parts to stop, allow parts to cool and disconnect spark plug wire before inspecting, servicing, adjusting or repairing unit.
ASSEMBLY CAUTION: AVOID INJURY. Read and understand the entire Safety section before proceeding. CARTON CONTENTS 1 2 3 1 4 2 1 6 1. 2. 3. 4. Mounting Hardware Handlebar Brace Handlebar Bracket Figure 4 3 4 5 1. 2. 3. 4. 5. 6. NOTE: Make sure the cables (connected to the handlebar) are on the left side of the unit and that the cable routing clips do not crimp or kink the cables at the top of the handlebar. See Figure 5.
3. Check the level of the engine crankcase oil before each use. NOTE: The engine is shipped with oil in crankcase. Refer to Engine Manual for detailed instructions. 4. Set-up mower for bagging, side discharge or mulching. See MOWER SET-UP on page 13. NOTE: The mower ships with the rear wheels and the front wheels set for different cutting heights. This position is not suitable for cutting grass.
OPERATION CONTROLS AND FEATURES Recoil Starter Handle See Figure 6 for locations. When pulled, the recoil starter handle will turn engine over. WARNING: Improper operation can lead to injury. Learn what the controls do and how they work. Thoroughly read and understand entire Operator Manual. CUTTING HEIGHT ADJUSTMENT DANGER: Avoid injury from rotating blade. ALWAYS shut off engine before adjusting cutting height. CAUTION: AVOID INJURY. Read and understand the entire Safety section before proceeding.
Front and Rear Wheels Wheel Drive Control To change cutting height, move cutting height levers one notch at a time on each wheel to set desired height (Figure 7). NOTE: Each wheel on mower must be set at the same height for a level cut. Front Wheel CAUTION: Unit will move forward at engine start if wheel drive control is engaged. ALWAYS release wheel drive control before starting unit. NOTE: Engine must be running for wheel drive to propel unit.
To Bag IMPORTANT: Excessively oxygenated or reformulated fuels (fuels blended with alcohols or ethers) can damage the fuel system or cause performance problems. If any undesirable operating problems occur, use a gasoline with a lower percentage of alcohol or ether. CAUTION: Check grass bag frequently for wear or deterioration. Replace worn or damaged bag with Ariens original equipment replacement bag only.
EMERGENCY STOPPING To Side Discharge 1. Shut off unit. 2. Remove grass bag. 3. Install Mulchmaster plug (Figure 11). 4. Remove side discharge cover and keep hardware. 5. Attach side discharge deflector to studs on mower. Make sure deflector covers discharge opening. 6. Secure with cover hardware from step 4. To stop the mower in an emergency: 1. Release the engine/blade control. 2. Release the wheel drive control (selfpropelled models). 3. Allow all moving parts to stop before leaving operator’s position.
Shut Off Do not mow too fast. Mow with engine at full throttle. Discharge clippings into areas already cut. Vary cutting pattern with each mowing. NOTE: To prevent dirt and grass from collecting on mower pan, avoid operating over bare ground with only patches of grass. 1. Release wheel drive control and allow unit to stop completely (self-propelled models). 2. Release engine/blade control. MOWING TIPS Cut grass when it is dry. Keep mower blades sharp. Do not set cutting height too low.
CHECK ENGINE/BLADE CONTROL The engine and blade must stop within 3 seconds after releasing the control. If the engine and blade continue to run, adjust or repair control immediately. See ENGINE/BLADE CONTROL ADJUSTMENT on page 21. CHECK WHEEL DRIVE CONTROL (self-propelled models) The unit must stop quickly and completely when the control is released. Adjust or repair if necessary. See WHEEL DRIVE CONTROL ADJUSTMENT (self-propelled models) on page 21. To remove blade: 1.
DO NOT Sharpen to This Pattern Blade 2 1 Bolt 3 DISCARD If More Than 1/2 in. (1.27 cm) OA0013 2 Figure 13 CHECK DRIVE BELT (SELFPROPELLED MODELS) Check drive belt and replace if worn or damaged. See DRIVE BELT REPLACEMENT on page 19. 4 3 CHECK FASTENERS Check all fasteners for proper tightness. Pay special attention to blade hardware and all guards, shields and safety devices. Sharpen to This Pattern OT0792 1. 2. 3. 4.
REPLACE OIL FILTER CHECK ENGINE COOLING Replace oil filter every 100 hours of use or every season. 1. Change engine oil. 2. Clean around filter. 3. Turn filter counterclockwise to remove (Figure 14). 4. Apply a thin coat of oil onto seal of new filter. 5. Install new filter and hand tighten securely. WARNING: HOT SURFACES can cause death or serious injury. DO NOT TOUCH parts which are hot from operation. ALWAYS allow parts to cool.
SERVICE AND ADJUSTMENTS CAUTION: AVOID INJURY. Read and understand the entire Safety section before proceeding. 1 6 5 2 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. 3 4 1. Place unit on a flat, level surface. 2. Disconnect spark plug wire from spark plug. 3.
1 Note belt routing around idlers and belt fingers. 2 4 3 1. 2. 3. 4. Drive Belt Engine Pulley Bent Belt Finger Belt Channel Push belt through belt channel and install it on the engine pulley. Figure 17 Figure 16 To install the drive belt: IMPORTANT: Be sure the belt seats in idler and pulley grooves with the idler touching the back (flat) side of belt. 1.
ENGINE/BLADE CONTROL ADJUSTMENT IMPORTANT: The engine and blade must stop within 3 seconds after releasing the control. If the engine and blade continue to run, adjust or repair control immediately. If the cable cannot be adjusted to stop the engine or blade within 3 seconds, take the unit to an authorized Ariens dealer for repairs. NOTE: The engine/blade control must be adjusted so the engine starts when the bail is held against the handlebar and stops when the bail is released.
NOTE: Before adjusting the wheel drive cable, first make sure the area around the drive components is free of dirt or debris that could prevent the transmission from engaging or disengaging properly, and then make sure the return spring is connected properly to idler arm. Adjust the wheel drive by adjusting the cable on the handlebar. To adjust: 1. Move the wheel drive cable adjuster up or down the handlebar. See Figure 19. To increase traction and speed, move the cable adjuster down the handlebar.
FUEL SYSTEM Gasoline left in the fuel system for extended periods without a stabilizer will deteriorate, resulting in gum deposits in the system. These deposits can damage the carburetor and the fuel hoses, filter and tank. Prevent deposits from forming in the fuel system during storage by adding a quality fuel stabilizer to the fuel. Follow the recommended mix ratio found on the fuel stabilizer container. To treat the fuel system for storage: 1.
PROBLEM PROBABLE CAUSE Wheel drive does not engage (SelfPropelled models) CORRECTION 1. Wheel drive control not engaged. 2. Drive belt out of position. 1. Engage wheel drive control. 2. Check drive belt. Adjust as necessary (see CHECK DRIVE BELT (self-propelled models) on page 17). 3. Replace belt (see CHECK DRIVE BELT (self-propelled models) on page 17). 4. Check wheel drive control cable. Adjust or replace as needed. See CHECK WHEEL DRIVE CONTROL (self-propelled models) on page 16. 5.
SPECIFICATIONS Model Number 911271 Description Pro21 Length - in. (cm) 62.5 (158.8) Height - in. (cm) 40.6 (103.1) Width - in. (cm) 23.5 (54.6) Actual Weight - lbs (kg) 125 (57.0) Cutting Width- in. (cm) 21 (53.3) Cutting Height - in. (cm) 1.5 – 3.63 (3.8 – 9.2) Engine, 4 cycle Kawasaki Model FJ180V Max Rotation Speed of Cutting Edge - RPM (min-1) 3,300 Governed RPM (May be different from maximum rpm.) 3,200 ± 100 Displacement Cu. In. (cc) 10.
Two-Year Limited Lawn and Garden Warranty This warranty statement applies only to 21-Inch Walk Behind Lawn Mowers, Wide Area Walks, AMP Wide Area Walks, Tillers, String Trimmers, Log Splitters, Edgers and Power Brushes Ariens Company (Ariens) warrants to the original purchaser that Ariens and Gravely brand consumer products manufactured and sold by Ariens will be free from defects in material and workmanship for a period of two years after the date of purchase.
To find an Ariens or Gravely authorized service representative, contact Ariens at: 655 W. Ryan Street Brillion, WI 54110 (920) 756 - 2141 www.ariens.com www.gravely.com Exceptions and Limitations • Batteries are warranted only for a period of 12 months after date of purchase, on a prorated basis. For the first 90 days of the warranty period, a defective battery will be replaced free of charge.
Ariens Company 655 West Ryan Street Brillion, WI 54110-1072 920-756-2141 Fax 920-756-2407 www.ariens.
