User manual HUSQVARNA 55R21HV B

[. . . ] 55R21HV Owner’s Manual For Parts and Service, call 1-800-448-7543 532 18 90-58 Rev. 1 03. 16. 04 BY Printed in U. S. A. SAFETY RULES Safe Operation Practices for Walk-Behind Mowers IMPORTANT: THIS CUTTING MACHINE IS CAPABLE OF AMPUTATING HANDS AND FEET AND THROWING OBJECTS. FAILURE TO OBSERVE THE FOLLOWING SAFETY INSTRUCTIONS COULD RESULT IN SERIOUS INJURY OR DEATH. I. GENERAL OPERATION • Read, understand, and follow all instructions on the machine and in the manual(s) before starting. [. . . ] Also, the mulched grass will biodegrade quickly to provide nutrients for the lawn. Always mulch with your highest engine (blade) speed as this will provide the best recutting action of the blades. Wet grass tends to form clumps and interferes with the mulching action. The best time to mow your lawn is the early afternoon. At this time the grass has dried, yet the newly cut area will not be exposed to direct sunlight. For best results, adjust the lawn mower cutting height so that the lawn mower cuts off only the top one-third of the grass blades (See Fig. If the lawn is overgrown it will be necessary to raise the height of cut to reduce pushing effort and to keep from overloading the engine and leaving clumps of mulched grass. For extremely heavy mulching, reduce your width of cut by overlapping previously cut path and mow slowly. MAX 1/3 ON ( ) OFF ON • • FUEL VALVE LEVER FIG. 15 Certain types of grass and grass conditions may require that an area be mulched a second time to completely hide the clippings. When doing a second cut, mow across (perpendicular) to the first cut path. Change your cutting pattern from week to week. Mow north to south one week then change to east to west the next week. This will help prevent matting and graining of the lawn. MAINTENANCE BEFORE EACH USE 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 system or add Stabilizer AFTER EACH USE EVERY 10 HOURS EVERY 25 HOURS OR SEASON EVERY 100 HOURS BEFORE STORAGE * (if so equipped) ** Electric-Start mowers *** Power-Propelled mowers **** Use a scraper deck to clean under 1 - Change more often if operating under a heavy load or in high outdoor temperatures. 2 - Service more often if operating in dirty or dusty conditions. 3 - Replace blades more often when mowing in sandy soil. 5 - And after each 5 hours of use. GENERAL RECOMMENDATIONS The warranty on this lawn mower does not cover items that have been subjected to operator abuse or negligence. To receive full value from the warranty, operator must maintain mower as instructed in this manual. Some adjustments will need to be made periodically to properly maintain your unit. At least once a season, check to see if you should make any of the adjustments described in the Service and Adjustments section of this manual. • At least once a year, replace the spark plug, clean or replace air filter element and check blade for wear. A new spark plug and clean/new air filter element assure proper air-fuel mixture and help your engine run better and last longer. • Follow the maintenance schedule in this manual. LUBRICATION CHART ➁ ENGINE OIL ➀ MULCHER DOOR HINGE PIN BEFORE EACH USE 1. [. . . ] 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 69 PART NO. 532 18 34-57 532 08 83-48 532 18 86-31 532 08 39-23 532 18 36-95 532 18 59-94 532 18 82-91 532 17 50-98 812 00 00-58 532 17 51-03 532 17 51-05 532 17 51-04 532 18 41-72 532 19 05-20 532 19 05-18 532 16 34-09 532 18 43-69 532 18 34-38 532 16 96-75 532 18 70-89 532 18 36-88 532 18 83-31 532 17 51-02 532 18 70-91 532 18 83-30 532 18 90-74 532 18 59-13 532 75 10-68 DESCRIPTION Cover, Dust, Wheel Washer, Flat 3/8 Wheel Assembly, Rear 9 x 2-1/4 Nut, Hex Hubcap Knob Spring, Torsion Pawl E-Ring Gear Retainer, Drive, LH Disc, Drive Seal, Friction Lever, Selector, Wheel Height, Rear Lever, Selector, Wheel Height, Front Screw Wheel Assembly, Front 9 x 2-1/4 Bushing, Front Axle Retainer, Hairpin Cotter Torque Shaft Assembly, Front Belt, Drive Pinion Assembly, LH Retainer, Drive, RH Rear Axle Assembly Pinion Assembly, RH Decal, Drive Control Decal, Drive Control Adjustment (bottom) Bearing, Ball (Wheel) 21 NOTE: All component dimensions given in U. S. 1 inch = 25. 4 mm ROTARY LAWN MOWER - - MODEL NUMBER 55R21HV (55R21HVB) PRODUCT NUMBER 954 22 32-10 GEAR CASE ASSEMBLY - - PART NUMBER 532 18 36-99 KEY NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 -- PART NO. [. . . ]