Page 2 - TABLE OF CONTENTS
GB - 2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Assembly . . . . . . . . . . . . . . . . . . . . . . . . 9 Controls and Features . . . . . . . . . . . . 11 Operation . . . . . . . . . . . . . . . . . . . . . . . 12 Maintenance. . . . . . . . . . . . . . . . . . . . . 17 Service...
Page 3 - DISCLAIMER
GB - 3 • 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 ...
Page 4 - SAFETY ALERTS; Personal Safety Is Involved!; NOTATIONS; SAFETY
GB - 4 SAFETY ALERTS Look for these symbols to point out important safety precautions. They mean: Attention! Personal Safety Is Involved! Become Alert! Obey The Message! The safety alert symbols above and signal words below are used on decals and in this manual. Read and understand all safety messag...
Page 5 - SAFETY RULES
GB - 5 SAFETY DECALS AND LOCATIONS ALWAYS replace missing or damaged safety decals. Refer to Figure 2 for safety decal locations. 1. DANGER! TO AVOID SERIOUS INJURY OR DEATH 2. DANGER! KEEP HANDS AND FEET AWAYDo not operate mower unless guards are in operating position or bagger is attached. 3. CAUT...
Page 9 - ASSEMBLY
GB - 9 CARTON CONTENTS 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. Remove the handlebar mounting hardware from the hand...
Page 11 - CONTROLS AND FEATURES
GB - 11 1. Engine/Blade Control 2. Wheel Drive Control (911152, 153, 154)3. Handlebars4. Grass Bag5. Rear Door6. Fuel Tank and Cap7. Oil Fill/Dipstick8. Muffler and Muffler Guard9. Cutting Height Levers (2 Rear Wheel Adjusters, 2 Front Wheel Adjusters) 10. Lift Handle 11. Primer Bulb (911150, 151, 1...
Page 12 - Handlebar; CUTTING HEIGHT ADJUSTMENT; Standard Models; OPERATION; Cutting Height Settings Chart; Front
GB - 12 CONTROLS AND FEATURES See Figure 6 for locations. Engine/Blade Control The engine/blade control must be held against the handlebar to start the engine and blade. Engine/blade control feature on mower stops engine and blade within 3 seconds whenever operator releases handlebar. Check this fea...
Page 13 - OPTIONAL CONTROLS; Wheel Drive Control
GB - 13 OPTIONAL CONTROLS Primer Bulb (911150, 151, 152, 153) Push the primer bulb in to add fuel for easier engine start. Wheel Drive Control (self-propelled models) NOTE: Engine must be running for wheel drive to propel unit. 911152, 153, 154 To drive forward: Slowly squeeze the wheel drive contro...
Page 14 - FILLING THE FUEL TANK; Grass Bag Removal
GB - 14 Ignition Switch (911154) A removable key operates the ignition switch. Turn the key to the start position (2) to start the unit. The key will spring back to the “RUN” position. RUN Position (1): All controls are operable.START Position (2): Starter turns over the engine. FILLING THE FUEL TAN...
Page 16 - Manual Start
GB - 16 EMERGENCY STOPPING To stop the mower in an emergency: 1. Release the engine/blade control.2. Release the wheel drive control (self- propelled models). 3. Allow all moving parts to stop before leaving operator’s position. STARTING AND SHUT OFF See Figure 6 for all Controls and Features. NOTE:...
Page 17 - MAINTENANCE
GB - 17 Ariens Dealers will provide any service, parts or adjustments which may be required to keep your unit operating at peak efficiency. Should engine require service, contact an Ariens Dealer or an authorized engine manufacturer's service center. MAINTENANCE SCHEDULE NOTE: Some working condition...
Page 18 - Sharpen the Mower Blades; CHECK DRIVE BELT
GB - 18 Sharpen the Mower Blades 1. Remove mower blade from unit. Discard mower blade if: • More than 1/2 in. (1.27 cm) of metal is removed. • Air lifts become eroded. • Blade is bent or broken. 2. Sharpen mower blade by removing an equal amount of material from each end of mower blade. DO NOT chang...
Page 19 - SERVICE AND ADJUSTMENTS
GB - 19 CHECK SPARK PLUG Spark plug should be replaced every 100 hours of operation or each year.NOTE: Loose spark plug wire terminals can cause sparking. Replace terminal if damaged. CHECK ENGINE COOLING To prevent overheating, air must circulate freely around the cooling fins, cylinder head and bl...
Page 20 - DRIVE BELT REPLACEMENT; To remove drive belt:; To install the drive belt:
GB - 20 DRIVE BELT REPLACEMENT (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 d...
Page 22 - Check the adjustment
GB - 22 WHEEL DRIVE CONTROL ADJUSTMENT (self-propelled 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 incr...
Page 24 - SERVICE PARTS
GB - 24 Grass does not disperse evenly 1. Too much grass is being removed per cutting. 2. Grass is too wet.3. Mowing speed is too fast. 1. Raise cutting height. 2. Allow grass to dry.3. Mow slower. Mower does not bag clippings 1. Grass bag is overfilled. 2. Mulching plug is installed. 1. Empty grass...
Page 25 - SPECIFICATIONS
GB - 25 SPECIFICATIONS Model Number 911150 911152 911154 Description BR21P BR21SP BR21SPE Length - in. (cm) 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) 102 (46.2) Cutting Width- in. (cm) 21 (53.3) 21 (53.3) 21 (53.3) Cutting Heigh...