Walk Behind Lawn Mower Owner/Operator Manual Manuel du Propriétaire/Utilisateur Models 911150 – BR21P 911152 – BR21SP 911156 – BR21SPE ENGLISH FRENCH 01282100A 3/09 Printed in USA
TABLE OF CONTENTS Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Storage . . . . . . . . . . . . . . . . . . . . . . . . . 22 Assembly . . . . . . . . . . . . . . . . . . . . . . . . 9 Troubleshooting. . . . . . . . . . . . . . . . . . 23 Controls and Features. . . . . . . . . . . . . 11 Service Parts . . . . . . . . . . . . . . . . . . . . 24 Operation . . . . . . . . . . . . . . . . . . . . . . . 12 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 Do not operate mower unless guards are in operating position or entire bagger is attached. ALWAYS replace missing or damaged safety decals. Refer to Figure 2 for safety decal locations. OL4540 Keep safety devices (guards, shields, switches, etc.) in place and working. 1 OL3030 Do not allow operation of machine by untrained personnel. OL4545 3 Go across slopes, not up and down. OL4550 Do not park on a slope unless chocked or blocked.
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. If the operator or the mechanic cannot read the manual, it is the owner’s responsibility to explain it to them. Only the user can prevent and is responsible for accidents or injuries occurring to themselves, other people or property. ALWAYS remove key (if equipped) and disconnect wire from spark plug before assembly.
If you strike an object, or if equipment vibrates abnormally, stop engine at once, wait for moving parts to stop and disconnect wire from spark plug. Repair any damage before restarting unit. Keep rear door closed when engine is running unless the grass bag is in place. 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 drain fuel outdoors away from ignition sources. ALWAYS shut off engine , and remove key, and close fuel shutoff valve when transporting unit on a truck or trailer. Avoid Electric Shock. DO NOT disconnect wire from spark plug while engine is running. Do NOT put battery in fire or mutilate. Explosive Gases! NO flames, NO sparks, NO smoking, near battery. Poisonous battery fluid contains sulfuric acid. Contact with skin, eyes or clothing can cause severe chemical burns.
ASSEMBLY 911150, 152 CAUTION: AVOID INJURY. Read and understand the entire Safety section before proceeding. CARTON CONTENTS 1 6 911156 2 3 4 5 OM1706 1. 2. 3. 4. 5. 6. Mower Unit Mulch Cover Side Discharge Chute Mulch Plug Literature Pack Grass Bag Figure 3 Figure 4 ASSEMBLY 1. Remove mower and handlebar from carton. 2. Install the handlebars on the pivot pins attached to the handlebar uprights. NOTE: Make sure the cables (connected to the handlebar) are on the left side of the unit. 3.
911150, 152 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 13. 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 the engine/blade control held against the handlebar. Engine must not start.
CONTROLS AND FEATURES 1 3 19 18 2 4 20 6 17 7 12 5 11 16 9 9 15 10 13 8 9 14 Figure 6 OM1866 1. Engine/Blade Control 2. Wheel Drive Control (911152, 156) 3. Handlebars 4. Grass Bag (911152, 156) 5. Rear Door 6. Fuel Tank and Cap 7. Oil Fill/Dipstick 8. Muffler and Muffler Guard 9. Cutting Height Levers (2 Rear Wheel Adjusters, 2 Front Wheel Adjusters) 10. Lift Handle 11. Primer Bulb 12. Air Filter 13. Mulch Cover 14. Side Discharge Chute 15. Mulch Plug 16. Handlebar Adjustment Holes 17.
OPERATION CONTROLS AND FEATURES CUTTING HEIGHT ADJUSTMENT See Figure 6 for locations. DANGER: Avoid injury from rotating blade. ALWAYS shut off engine before adjusting cutting height. WARNING: Improper operation can lead to injury. Learn what the controls do and how they work. Thoroughly read and understand entire Operator Manual. CAUTION: On self-propelled models, both rear wheels must be set at same height or traction drive may not work properly. CAUTION: AVOID INJURY.
OPTIONAL CONTROLS Speed Limiter (911152, 156) Primer Bulb The speed limiter increases or decreases tension in the drive cable, which limits the unit’s forward speed. In the operator’s position, turn the speed limiter to the left to increase maximum forward speed. Turn the speed limiter to the right to decrease maximum forward speed. Push the primer bulb in to add fuel for easier engine start.
MOWER SET-UP 1 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 prevents grass flow, release engine/blade control and disconnect spark plug wire before attempting to clear away any clogs. 3 2 4 To Bag (Optional on Push Models) CAUTION: Check grass bag frequently for wear or deterioration.
To Side Discharge 2 See Figure 11. 1. Shut off unit. 2. Remove grass bag. 3. Lift rear door and install mulch plug (see below). 4. Remove the knob from and then hold open the mulch cover. 5. Install the side discharge chute on stud on the mower. Make sure chute covers discharge opening. 6. Secure the chute with the knob removed in step 4 and then close the mulch cover. 1 1. Mulch Plug 2. Rear Door Figure 12 EMERGENCY STOPPING To stop the mower in an emergency: 1. Release the engine/blade control. 2.
IMPORTANT: DO NOT let starter handle snap against bracket. 6. Repeat steps 4 and 6 until engine starts. (If engine does not start, see TROUBLESHOOTING on page 23.) Shut Off 1. Release wheel drive control and allow unit to stop completely (self-propelled models). 2. Release engine/blade control. 3. Turn key to off position and then remove key (electric start models). Electric Start (911156) Recoil may also be used to start the engine (see Manual Start on page 15).
CHECK ENGINE/BLADE CONTROL To install blade: 1. Replace blade, flat washer, lock washer and bolt on shaft. 2. Torque bolt to 37.5 - 50 lbf-ft (51-68 N•m) (bolt should fully compress lock washer). 3. Connect spark plug wire. 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. CHECK WHEEL DRIVE CONTROL (self-propelled models) Sharpen the Mower Blades CAUTION: DO NOT sharpen mower blades while on unit.
3. Check mower blade balance. Slide mower blade on an unthreaded bolt. A balanced blade should remain in a horizontal position. If either end of mower blade moves downward, sharpen the heavy end until blade is balanced (Figure 14). 4. Install mower blade on unit. 5. Tighten the bolts to a torque of 37.5 50 lbf-ft (51-68 N•m). Blade GENERAL LUBRICATION NOTE: The mower transmission is lubricated and sealed at the factory. It should need no routine lubrication.
SERVICE AND ADJUSTMENTS CAUTION: AVOID INJURY. Read and understand the entire Safety section before proceeding. Mounting Hardware Handlebar Upright 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. 2. Disconnect spark plug wire from spark plug. 3.
1 To Install The Drive Belt: 2 IMPORTANT: Be sure the belt seats in idler and pulley grooves with the idler touching the back (flat) side of belt. 1. Install the new belt on the transmission input pulley and idlers, route it through the belt channel, and then install the belt on the engine pulley. See Figure 18. Push belt through belt channel and install it on the engine pulley. 6 5 4 1. Belt 2. Transmission Input Pulley 3. Idler Return Spring 3 4. Wheel Drive Cable 5. Drive Cable Spring 6.
4. Install the blade adapter and blade on the crankshaft. Make sure the blade hardware is tightened to the proper torque. See To install blade: on page 17. 5. Replace the transmission cover. 6. Connect spark plug wire to the spark plug. ENGINE/BLADE CONTROL ADJUSTMENT NOTE: The engine/blade control has no user serviceable adjustments. If the engine/blade control does not stop the engine or blade within 3 seconds of releasing the control bail, take the unit to an authorized Ariens dealer for repairs.
WHEEL DRIVE CONTROL ADJUSTMENT (self-propelled 2. The unit should move forward as you squeeze the wheel drive control and then stop immediately and not "creep" slowly forward when you release it. models) See Figure 22. NOTE: The unit should stop immediately when the wheel drive control is released, and the unit should not creep forward when the wheel drive control is disengaged with the engine running. The unit’s forward speed should increase as the wheel drive control gets closer to 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. Engage wheel drive control. 1. Wheel drive control not engaged. 2. Drive belt out of position. 2. Check drive belt. Adjust as necessary (see CHECK DRIVE BELT (self-propelled models) on page 18). 3. Replace belt (see CHECK DRIVE BELT (self-propelled models) on page 18). 4. Check wheel drive control cable. Adjust or replace as needed. See CHECK WHEEL DRIVE CONTROL (self-propelled models) on page 17. 5.
SPECIFICATIONS Model Number 911150 Description BR21P Length - in. (cm) 911152 911156 BR21SP BR21SPE 70 (177.8) Height - in. (cm) 47 (119.4) Width - in. (cm) 21.5 (54.6) Actual Weight - lbs (kg) 69 (31.3) 83 (37.6) 87 (39.5) Cutting Width- in. (cm) 21 (53.3) 21 (53.3) 21 (53.3) 1–4 (2.5 – 10.4) 1–4 (2.5 – 10.4) 1–4 (2.5 – 10.4) Kohler Kohler Kohler XT-7 XT-7 Cutting Height - in.
Two-Year Limited Lawn and Garden Walk Behind Warranty This warranty statement applies only to 21-Inch Walk Behind Lawn Mowers, Wide Area Walks, Super Striper Mowers, 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 after December 31, 2007 will be free from defects in material and workmanship for a period of two years after the date of purchase.
Exclusions – Items Not Covered by This Warranty • • • • • Engines and engine accessories are covered only by the engine manufacturer’s warranty and are not covered by this warranty. Parts that are not genuine Ariens or Gravely service parts are not covered by this warranty.
Ariens Company 655 West Ryan Street Brillion, WI 54110-1072 920-756-2141 Fax 920-756-2407 www.ariens.
