Owner’s Manual ROTARY LAWN MOWER 650 Series Briggs & Stratton Engine Power-Propelled 21" Multi-Cut Model Number 6521RS Product Number 961 45 00-05 CAUTION: Read and follow all Safety Rules and Instructions before operating this equipment
TABLE OF CONTENTS Safety Rules ..........................................2-3 Warranty ...................................................4 Product Specifications ..............................5 Assembly / Pre-Operation ........................6 Operation............................................. 7-11 Maintenance Schedule ...........................12 Maintenance ......................................12-15 Service and Adjustments...................15-16 Storage ...........................................
DO: • Mow across the face of slopes: never up and down. Exercise extreme caution when changing direction on slopes. • Remove obstacles such as rocks, tree limbs, etc. • Watch for holes, ruts, or bumps. Tall grass can hide obstacles. DO NOT: • Do not trim near drop-offs, ditches or embankments. The operator could lose footing or balance. • Do not trim excessively steep slopes. • Do not mow on wet grass. Reduced footing could cause slipping.
WARRANTY SECTION 1: LIMITED WARRANTY Husqvarna Forest & Garden Company (“Husqvarna”) warrants Husqvarna product to the original purchaser to be free from defects in material and workmanship from the date of purchase for the “Warranty Period” of the product as set forth below: (4) Additional damage to parts or components due to continued use occurring after any of the above. REPAIR OR REPLACEMENT AS PROVIDED UNDER THIS WARRANTY IS THE EXCLUSIVE REMEDY OF THE PURCHASER.
PRODUCT SPECIFICATIONS Serial Number: Date of Purchase: Gasoline Capacity / Type: 1.6 Quarts (Unleaded Regular) Oil Type (API SG–SL): SAE 30 (above 32°F); SAE 5W-30 (below 32°F) Oil Capacity: 20 Ounces Spark Plug (Gap: .030") Champion J19LM or RJ19LM Blade Bolt Torque: 35-40 ft. lbs. • The model and serial numbers will be found on a decal on the rear of the lawn mower housing. Record both serial number and date of purchase in space provided above.
ASSEMBLY / PRE-OPERATION Read these instructions and this manual in its entirety before you attempt to assemble or operate your new lawn mower. IMPORTANT: This lawn mower is shipped WITHOUT OIL OR GASOLINE in the engine. Your new lawn mower has been assembled at the factory with the exception of those parts left unassembled for shipping purposes. All parts such as nuts, washers, bolts, etc., necessary to complete the assembly have been placed in the parts bag.
OPERATION KNOW YOUR LAWN MOWER READ THIS OWNER'S MANUAL AND ALL SAFETY RULES BEFORE OPERATING YOUR LAWN MOWER. Compare the illustrations with your lawn mower to familiarize yourself with the location of various controls and adjustments. Save this manual for future reference. These symbols may appear on your lawn mower or in literature supplied with the product. Learn and understand their meaning.
The operation of any lawn mower can result in foreign objects thrown into the eyes, which can result in severe eye damage. Always wear safety glasses or eye shields while operating your lawn mower or performing any adjustments or repairs. We recommend a standard safety glasses or wide vision safety mask worn over spectacles. HOW TO USE YOUR LAWN MOWER ENGINE SPEED The engine speed was set at the factory for optimum performance. Speed is not adjustable.
CAUTION: Do not run your lawn mower without mulcher plate or plug, clipping deflector or approved grass catcher in place. Never attempt to operate the lawn mower with the rear door removed or propped open. Pivot pins Rear door Grass catcher handle Mulcher plug SIDE DISCHARGING • Mulcher plug must be installed into rear discharge opening of mower. • Open mulcher door and install discharge deflector under door as shown. • Mower is now ready for discharging operation.
SIMPLE STEPS TO REMEMBER WHEN CONVERTING YOUR LAWN MOWER CAUTION: Alcohol blended fuels (called gasohol or using ethanol or methanol) can attract moisture which leads to separation and formation of acids during storage. Acidic gas can damage the fuel system of an engine while in storage. To avoid engine problems, the fuel system should be emptied before storage of 30 days or longer. Empty the gas tank, start the engine and let it run until the fuel lines and carburetor are empty.
MOWING TIPS MULCHING MOWING TIPS CAUTION: Do not use de-thatcher blade attachments on your mower. Such attachments are hazardous, will damage your mower and could void your warranty. • Under certain conditions, such as very tall grass, it may be necessary to raise the height of cut to reduce pushing effort and to keep from overloading the engine and leaving clumps of grass clippings. It may also be necessary to reduce ground speed and/or run the lawn mower over the area a second time.
MAINTENANCE BEFORE EACH USE AFTER EACH USE EVERY 10 HOURS EVERY 25 HOURS OR SEASON EVERY 100 HOURS BEFORE STORAGE Check for Loose Fasteners Clean / Inspect Grass Catcher * Check Tires Check Drive Wheels *** Clean Lawn Mower **** Clean under Drive Cover *** Check Drive Belt / Pulleys *** Check / Sharpen / Replace Blade Lubrication Clean and Recharge Battery ** Check Engine Oil level Change Engine Oil Clean Air Filter Inspect Muffler Replace Spark Plug Replace Air Filter Paper Cartridge Empty fuel syste
LAWN MOWER Always observe safety rules when performing any maintenance. TIRES • Keep tires free of gasoline, oil, or insect control chemicals which can harm rubber. • Avoid stumps, stones, deep ruts, sharp objects and other hazards that may cause tire damage. DRIVE WHEELS Check rear drive wheels each time before you mow to be sure they move freely. The wheels not turning freely means trash, grass cuttings, etc. are in the drive wheel area and must be cleaned to free drive wheels.
ENGINE LUBRICATION Use only high quality detergent oil rated with API service classification SG–SL. Select the oil's SAE viscosity grade according to your expected operating temperature. SAE VISCOSITY GRADES SAE 30 7. Continue adding small amounts of oil, rechecking the dipstick until oil level settles at FULL. DO NOT overfill, or engine will smoke heavily from the muffler on startup. 8. Always be sure to retighten oil dipstick before starting engine. 9. Reconnect spark plug wire to spark plug.
CLEANING IMPORTANT: For best performance, keep mower housing free of built-grass and trash. Clean the underside of your mower after each use. CAUTION: Disconnect spark plug wire from spark plug and place wire where it cannot come in contact with plug. • Clean the underside of your lawn mower by scraping to remove build-up of grass and trash. • Clean engine often to keep trash from accumulating. A clogged engine runs hotter and shortens engine life.
TO ADJUST HANDLE The handle on your lawn mower has three (3) height positions - adjust to height that suits you. • Squeeze the bottom ends of lower handle towards each other until the pin in handle can be inserted into one of the three height adjustment holes. High ENGINE ENGINE SPEED Your engine speed has been factory set. Do not attempt to increase engine speed or it may result in personal injury.
stabilizer to gasoline in fuel tank or storage container. Always follow the mix ratio found on stabilizer container. Run engine at least 10 minutes after adding stabilizer to allow the stabilizer to reach the carburetor. Do not empty the gas tank and carburetor if using fuel stabilizer. ENGINE OIL Drain oil (with engine warm) and replace with clean engine oil. (See “ENGINE” in the Maintenance section of this manual). CYLINDER 1. Remove spark plug. 2.
TROUBLESHOOTING - See appropriate section in manual unless directed to a Husqvarna Parts & Repair Center. PROBLEM CAUSE CORRECTION Does not start (continued) 9. Control bar defective. 10. Fuel valve lever (if so equipped) in OFF position. 11. Weak battery (if equipped). 12. Disconnected battery connector (if equipped). 9. Replace control bar. 10. Turn fuel valve lever to the ON position. 11. Charge battery. 12. Connect battery to engine. Loss of power 1.
ROTARY LAWN MOWER - - MODEL NUMBER 6521RS (96145000500) (PRODUCT NUMBER 961 45 00-05) REPAIR PARTS 36
ROTARY LAWN MOWER - - MODEL NUMBER 6521RS (96145000500) (PRODUCT NUMBER 961 45 00-05) KEY NO. 37 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 PART NO.
ROTARY LAWN MOWER - - MODEL NUMBER 6521RS (96145000500) (PRODUCT NUMBER 961 45 00-05) 38
ROTARY LAWN MOWER - - MODEL NUMBER 6521RS (96145000500) (PRODUCT NUMBER 961 45 00-05) KEY NO. PART NO.
532 41 37-72 Rev. 2 05.01.07 BY Printed in U.S.A.
