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10

OPERATION

TO STOP ENGINE

•  To stop engine, move throttle control lever to STOP 

position. Wait until blade and all moving parts have 

stopped and turn fuel valve to OFF position if you do 

not intend to re start the engine soon.

TO START ENGINE (See Fig. 14)

NOTE:

 Due to protective coatings on the engine, a small 

amount of smoke may be present during the initial use of 

the product and should be considered normal.
1.  Be sure fuel valve is in the ON po si tion.

2.  To start a cold engine, move handle mounted throttle/

choke con trol le ver to CHOKE position. 

3.  Pull starter handle quickly. Do not allow starter rope 

to snap back.

4.  Slowly move throttle control lever to  FAST position 

after engine starts.

•  To start a warm engine, move throt tle control lever to 

FAST position, then follow steps above.

NOTE: 

 Allow a cold engine to warm up for one minute 

before starting the blade.  See “BLADE CONTROL” in this 

section of this manual.

FUEL 

VALVE 

LEVER

FIG. 14

ON

 

OFF

MOWING TIPS 

CAUTION:  Do not use de-thatcher 

blade attachments. 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.

•  For extremely heavy cutting, reduce the width of cut 

by overlapping previously cut path and mow slowly.

•  For better grass bagging and most cutting conditions, 

the engine speed should be set in the fast position.

•  Pores in cloth grass catchers can become filled with 

dirt and dust with use and catchers will collect less 

grass.  To prevent this, regularly hose catcher off with 

water and let dry before using.

•  Keep top of engine around starter clear and clean of 

grass clippings and chaff.  This will help engine air 

flow and extend engine life.

MULCHING MOWING TIPS

IMPORTANT

:  FOR BEST PERFORMANCE, KEEP MOWER 

HOUSING FREE OF BUILT-UP GRASS AND TRASH. SEE 

“CLEANING” IN MAINTENANCE SECTION OF THIS MANUAL.

•   The special mulching blade will recut the grass clip-

pings many times and reduce them in size so that 

as they fall onto the lawn they will disperse into the 

grass and not be noticed.  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.

•    Avoid cutting your lawn when it is wet.  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. 15).  If the lawn is over-

grown 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.

•    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 east to west the next week.  

This will help prevent matting and graining of the lawn.

FIG. 15

MAX 1/3

Summary of Contents for 5521BBC

Page 1: ...7021RB Owner s Manual 96143005000 2008 12 532 42 57 44 12 22 08 BY Printed in U S A ...

Page 2: ...typrotectivedevices in place See manufacturer s instructions for proper operation and installation of accessories Only use accessories approved by the manufacturer Stop the blade s when crossing gravel drives walks or roads Stoptheengine motor wheneveryouleavetheequip ment before cleaning the mower or unclogging the chute Shut the engine motor off and wait until the blade comes to complete stop be...

Page 3: ...RNING This lawn mower is equipped with an internal combustion engine and should not be used on or near any unimproved forest covered brush covered or grass covered land unless the engine s exhaust system is equipped with a spark arrester meeting applicable local or state laws if any If a spark arrester is used it should be maintained in effective working order by the operator In the state of Calif...

Page 4: ...ing or discharging see TO CONVERT MOWER in the Operation section of this manual FIG 2 FIG 1 OPERATOR PRESENCE CONTROL BAR HANDLE KNOB LIFT UP LIFT UP LOWER HANDLE MOWING POSITION UPPER HANDLE FIG 3 FRAME HANDLE VINYL BINDINGS FRAME OPENING TO REMOVE LAWN MOWER FROM CARTON 1 Remove loose parts included with mower 2 Cut down two end corners of carton and lay end panel down flat 3 Removeallpackingmat...

Page 5: ...is started SINGLE POINT HEIGHT ADJUSTER used to adjust cutting height of lawn mower HOUSING GRASS CATCHER THROTTLE ENGINE CONTROL used for starting and stopping the engine and allows you to select either FAST or SLOW engine speed STARTER HANDLE used for starting the engine MULCHER DOOR allows conversion to discharge or bagging operation MULCHERPLUG locatedatthedischargeopening must be removed when...

Page 6: ...risk of blade contact injury Do not under any circumstances attempt to defeat the function of this control HOW TO USE YOUR LAWN MOWER THROTTLE ENGINE CONTROL See Fig 4 The engine is controlled by a throttle control located on the side of the upper handle CHOKE position is for starting a cold engine FAST position is for starting a warm engine normal cutting trimming and better grass bagging SLOW po...

Page 7: ...te turnbuckle on drive control to increase drive speed 3 Operate mower to test drive speed Readjust as re quired 4 If condition fails to improve after the above steps forward speed remains the same your drive belt is worn and should be replaced TO ENGAGE DRIVE CONTROL DRIVE CONTROL LEVER DRIVE CONTROL DISENGAGED OPERATOR PRESENCE CONTROL BAR FIG 6 FIG 7 ADJUSTMENT TURNBUCKLE OPERATION TO ATTACH GR...

Page 8: ...ar door and remove mulcher plug Store mulcher plug in a safe place You can now install the grass catcher Toconverttomulchingordischargingoperation install mulcher plug into rear discharge opening of mower FIG 11 MULCHER PLUG FIG 10 FRAME HANDLE FIG 12 OPEN MULCHER DOOR DISCHARGE DEFLECTOR SIDE DISCHARGING See Fig 12 Mulcher plug must be installed into rear discharge opening of mower Open mulcher d...

Page 9: ... line on dipstick Change the oil after every 25 hours of operation or each season You may need to change the oil more often under dusty dirty conditions See TO CHANGE ENGINE OIL in the Maintenance section of this manual OPERATION FIG 13 GASOLINE FILLER CAP LOWER MARK UPPER MARK OIL FILL CAP DIPSTICK ADD GASOLINE See Fig 13 Fill fuel tank to bottom of tank filler neck Do not over fill Use fresh cle...

Page 10: ...dirt and dust with use and catchers will collect less grass To prevent this regularly hose catcher off with water and let dry before using Keep top of engine around starter clear and clean of grass clippings and chaff This will help engine air flow and extend engine life MULCHING MOWING TIPS IMPORTANT FOR BEST PERFORMANCE KEEP MOWER HOUSING FREE OF BUILT UP GRASS AND TRASH SEE CLEANING IN MAINTENA...

Page 11: ...IMPORTANT DO NOT OIL OR GREASE PLASTIC WHEEL BEARINGS VISCOUS LUBRICANTS WILL ATTRACT DUST AND DIRT THAT WILL SHORTEN THE LIFE OF THE SELF LUBRICATING BEARINGS IF YOU FEEL THEY MUST BE LUBRICATED USE ONLY A DRY POWDERED GRAPHITE TYPE LUBRICANT SPARINGLY SPRAY LUBRICANT SEE ENGINE IN MAINTENANCE SECTION Check for Loose Fasteners Clean Inspect Grass Catcher Check Tires Check Drive Wheels Clean Lawn ...

Page 12: ...keep the blade balanced An unbalanced blade will cause eventual damage to lawn mower or engine The blade can be sharpened with a file or on a grind ing wheel Do not attempt to sharpen while on the mower To check blade balance drive a nail into a beam or wall Leave about one inch of the straight nail exposed Place center hole of blade over the head of the nail If blade is balanced it should remain ...

Page 13: ...E 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 Keep finished surfaces and wheels free of gasoline oil et...

Page 14: ...air and adjustment CARBURETOR Your carburetor is not adjustable If your engine does not operate properly due to suspected carburetor problems take your lawn mower to an authorized service center for repair and or adjustment IMPORTANT NEVERTAMPERWITHTHEENGINEGOVERNOR WHICH IS FACTORY SET FOR PROPER ENGINE SPEED OVERSPEEDING THE ENGINE ABOVE THE FACTORY HIGH SPEED SETTING CAN BE DANGEROUS IF YOU THI...

Page 15: ...k and carburetor if using fuel stabilizer ENGINE OIL Drain oil with engine warm and replace with clean en gine oil See ENGINE in the Maintenance section of this manual CYLINDER 1 Remove spark plug 2 Pour one ounce 29 ml of oil through spark plug hole into cylinder 3 Pull starter handle slowly a few times to distribute oil 4 Replace with new spark plug OTHER Do not store gasoline from one season to...

Page 16: ...rash under mower 3 Clean underside of mower housing Excessive 1 Worn bent or loose blade 1 Replace blade Tighten blade bolt vibration 2 Bent engine crankshaft 2 Contact a qualified service center Starter rope 1 Engine flywheel brake is on 1 Depress control bar to upper handle hard to pull when control bar is released before pulling starter rope 2 Bent engine crankshaft 2 Contact a qualified servic...

Page 17: ...17 SERVICE NOTES ...

Page 18: ...18 ROTARY LAWN MOWER MODEL NUMBER 7021RB 96143005000 PRODUCT NUMBER 961 43 00 50 ...

Page 19: ... 20 03 Clip 59 532 18 27 48 Grip Handle Foam Smooth one side 60 532 19 08 78 Throttle Engine Control 61 532 18 33 65 Screw Hex Head 1 4 20 x 2 1 8 62 532 18 21 31 Belt Guide Stud 64 532 19 70 33 Nut Hex 3 8 16 66 532 18 99 37 Screw Hex Washer Head 1 4 20 x 1 2 67 532 19 65 41 Blade Brake Clutch Control 68 532 18 04 60 Bolt Hex Head 69 Blade Brake Clutch Includes Key Numbers 82 95 70 532 19 09 30 B...

Page 20: ...20 ROTARY LAWN MOWER MODEL NUMBER 7021RB 96143005000 PRODUCT NUMBER 961 43 00 50 ...

Page 21: ... 532 40 07 83 Cover Drive 26 532 75 06 34 Screw Threaded Rolled 10 25 x 50 28 812 00 00 58 E Ring 7 16 29 532 18 94 03 Cover Dust Wheel 31 532 40 48 45 Pawl 32 532 41 31 05 Wheel Driven Rear 8 x 1 3 4 33 532 40 91 48 Nut Hex Flangelock 3 8 16 34 532 85 12 26 Washer Flat 35 532 41 09 22 Shaft Assembly Rear 36 532 41 09 33 Shaft Assembly Front 37 532 16 14 63 Retainer Front Shaft 38 532 16 34 09 Scr...

Page 22: ...ies Zero Turn Riders 2 Years 1 Year 90 Days iZ LZ BZ Series Zero Turn Riders Applies to units factory equipped with Roll Over Protection System 90 Days Commercial Walk Mowers includes 21 wide area 90 Days Commercial Turf Specialty Equipment 1 Years 1 Years 1 Year Zero Turn Commercial Turf Specialty Attachments 2 Years 1 Year 90 Days Power Cutters Lifetime Ignition Warranty Parts Only 1 Year 90 Day...

Page 23: ...XCEPTIONS AND LIMITATIONS This warranty shall be inapplicable to defects resulting from the following 1 Accident abuse misuse negligence and neglect including stale fuel dirt abrasives moisture rust corrosion or any adverse reaction due to incorrect storage or use habits 2 Failure to operate or maintain the unit in accordance with the Owner s Operator s manual or instruction sheet furnished by Hus...

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