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SAFETY RULES ......................................................... 2-3
PRODUCT SPECIFICATIONS....................................... 3
CUSTOMER RESPONSIBILITIES................................. 3
ASSEMBLY.................................................................... 4
OPERATION ............................................................... 5-9

MAINTENANCE SCHEDULE ........................................ 9
MAINTENANCE ........................................................ 9-12
SERVICE AND AD JUST MENTS ............................ 12-13
STORAGE.................................................................... 14
TROU BLE SHOOT ING ................................................. 15
WARRANTY................................................................. 16

CONGRATULATIONS  on your purchase of a new lawn 
mower.  It has been designed, engineered and man u fac tured 
to give you the best possible dependability and performance.

Should you experience any problem you cannot easily 
remedy, please contact your nearest authorized service 
center/department.  We have competent, well-trained 
tech ni cians and the proper tools to service or repair this 
lawn mower.

Please read and retain this manual.  The instructions will 
enable you to assemble and maintain your lawn mower 
properly.  Always observe the “SAFETY RULES”.

SERIAL 
NUMBER:   _________________________________

DATE OF PURCHASE:  _______________________

THE MODEL AND SERIAL NUMBERS WILL BE FOUND 
ON  A DECAL ATTACHED TO THE REAR OF THE LAWN 
MOWER HOUSING.

YOU SHOULD RECORD BOTH SERIAL NUMBER AND 
DATE OF PURCHASE AND KEEP IN A SAFE PLACE 
FOR FUTURE REFERENCE.     

CUSTOMER RESPONSIBILITIES

•      Read and observe the safety rules.

•      Follow  a  regular  schedule  in  maintaining,  caring  for 

and using your lawn mower.

•      Follow the instructions under “Maintenance” and “Stor-

 age” sec tions of this own er’s manual.

TABLE OF CONTENTS

•      Never refuel the machine indoors.
•      Never store the machine or fuel container where there 

is an open fl ame, spark or pilot light such as a water 
heater or on other appliances.

•         Never fi ll containers inside a vehicle, on a truck or trailer 

bed with a plastic liner.  Always place containers on 
the ground away from your vehicle before fi lling.

•         Remove gas-powered equipment from the truck or trailer 

and refuel it on the ground.  If this is not possible, then 
refuel such equipment with a portable container, rather 
than from a gasoline dispenser nozzle.

•      Keep the nozzle in contact with the rim of the fuel tank 

or container opening at all times until fueling is complete.  
Do not use a nozzle lock-open device.

•      If fuel is spilled on clothing, change clothing immedi-

ately.

•      Never overfi ll fuel tank.  Replace gas cap and tighten 

securely.

V. GENERAL SERVICE

•      Never run a machine inside a closed area.
•      Never  make  adjustments  or  repairs  with  the  engine 

(motor) running. Disconnect spark plug wire, and keep 

wire away from plug to prevent accidental starting.

•      Keep  nuts  and  bolts,  especially  blade  attachement 

bolts, tight and keep equipment in good condition.

•      Never tamper with safety devices.  Check their proper 

operation regularly.

•     Keep machine free of grass, leaves, or other debris 

build-up.  Clean oil or fuel spillage.  Allow machine to 
cool before storing.

•      Stop and inspect the equipment if you strike an object.  

Repair, if necessary, before restarting.

•      Never attempt to make wheel height adjustments while 

the engine (motor) is running.

•      Grass catcher components are subject to wear, dam-

 age, and deterioration, which could expose moving 
parts or allow objects to be thrown.  Frequently check 
com po nents and replace with manufacturer’s rec om -
mend ed parts, when necessary.

•      Mower blade is sharp and can cut.  Wrap the blade or 

wear gloves, and use extra caution when servicing it.

•         Do not change the engine governor setting or overspeed 

the engine.

•     Maintain or replace safety and instruction labels, as 

necessary.

 WARNING: This lawn mower is equipped with an internal com bus tion engine and should not be used on or near any 

un im proved forest-covered, brush-covered or grass-cov ered 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.
A spark arrester for the muffl er is available through your nearest authorized service center.

PRODUCT SPECIFICATIONS

Gasoline Capacity                  1.5 Quarts
and Type:                                (Unleaded Regular Only)

Oil Type (API SG–SL):           SAE 30 (above 32°F);

                                               SAE 10W-30 (below 32°F)

Oil Capacity:                           20 Ounces

Spark Plug (Gap:  .030"):       Champion RC12YC

Blade Bolt Torque:                  35-40 ft. lbs.

Summary of Contents for XT721F

Page 1: ...XT721F Owner s Manual 96143006200 2009 12 532 43 10 10 12 03 09 BY Printed in U S A ...

Page 2: ...vices 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 Stop the engine motor whenever you leave the equip ment before cleaning the mower or unclogging the chute Shuttheengine motor offandwaituntilthebladecomes to complete stop before removing gr...

Page 3: ...aineropeningatalltimesuntilfuelingiscomplete Do not use a nozzle lock open device If fuel is spilled on clothing change clothing immedi ately Never overfill fuel tank Replace gas cap and tighten securely V GENERAL SERVICE Never run a machine inside a closed area Never make adjustments or repairs with the engine motor running Disconnect spark plug wire and keep wire away from plug to prevent accide...

Page 4: ...carton thor ougly for additional loose parts HOW TO SET UP YOUR LAWN MOWER TO UNFOLD HANDLE See Figs 1 and 2 IMPORTANT UNFOLD HANDLE CAREFULLY SO AS NOT TO PINCH OR DAMAGE CONTROL CABLES 1 Raise handles until lower handle section locks into place in mowing position 2 Remove protective padding raise upper handle sec tion into place on lower handle and tighten both handle knobs 3 Remove handle paddi...

Page 5: ...ENCE CONTROLBAR must be held down to the handle to start the engine Release to stop the engine STARTER HANDLE used for starting the engine HOUSING GRASS CATCHER DRIVE CONTROL LEVERS used to engage power pro pelled forward motion lawn mower MULCHER DOOR allows conversion to discharge or bagging operation OPERATOR PRESENCE CONTROL BAR STARTER HANDLE HANDLE KNOB These symbols may appear on your lawn ...

Page 6: ...age drive wheels To keep drive control engaged when turning corners push down on the handle to lift the front wheels off the ground while turning lawn mower 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 reco...

Page 7: ...NE in the Mainte nance section of this manual CAUTION DO NOT overfill engine with oil or it will smoke heavily from the muffler on startup 1 Be sure lawnmower is level 2 Remove oil dipstick from oil fill spout 3 You receive a container of oil with the unit Slowly pour the entire container down the oil fill spout into the engine NOTE Initial oil fill requires only 18 oz due to residual oil in engin...

Page 8: ...essary 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 en...

Page 9: ...abuse or negligence To receivefullvaluefromthewarranty operatormustmaintain 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 Ad justments section of this manual At least once a year replace the spark plug clean or replace air...

Page 10: ...E Protect your hands with gloves and or wrap blade with heavy cloth 4 Remove blade bolt by turning counter clockwise 5 Removebladeandattachinghardware bolt lockwasher and hardened washer NOTE Removethebladeadapterandcheckthekeyinside hub of blade adapter The key must be in good condition to work properly Replace adapter if damaged TO REPLACE BLADE See Fig 11 1 Positionthebladeadapterontheenginecra...

Page 11: ...ten under dusty conditions TO CLEAN AIR FILTER 1 Remove cover 2 Carefully remove cartridge 3 Clean by gently tapping on a flat surface If very dirty replace cartridge CAUTION Petroleumsolvents suchas kerosene are not to be used to clean cartridge Theymaycausedeterioration of the cartridge Do not oil cartridge Do not use pressurized air to clean or dry cartridge 4 Install cartridge then replace cov...

Page 12: ...jury before performing any service or adjustments 1 Release control bar and stop engine 2 Makesurethebladeandallmovingparts have completely stopped 3 Disconnect spark plug wire from spark plug and place where it cannot come in contact with plug IN LINE FUEL FILTER See Fig 15 The fuel filter should be replaced once each season If fuel filter becomes clogged obstructing fuel flow to carburetor repla...

Page 13: ...LACE DRIVE BELT See Fig 17 1 Place new drive belt on engine pulley inside belt re tainer 2 Route the other end of the new drive belt through hole in housing 3 Reinstall blade 4 Return mower to upright position 5 Install new belt on gearcase pulley 6 Reinstall belt keeper and drive cover NOTE Always use factory approved belt to assure proper fit and long life TO ADJUST HANDLE See Figs 18 and 19 The...

Page 14: ...on from dust and dirt Cover your unit with a suitable protective cover that does not retain moisture Do not use plastic Plastic cannotbreathe whichallowscondensationtoformand will cause your unit to rust IMPORTANT NEVER COVER MOWER WHILE ENGINE AND EXHAUST AREAS ARE STILL WARM CAUTION Never store the lawn mower with gasoline in the tank inside a build ing where fumes may reach an open flameorspark...

Page 15: ...ven 2 Wheel heights uneven 2 Set all wheels at same height 3 Buildup of grass leaves and trash under 3 Clean underside of mower housing mower 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 when control 1 Depress control bar to upper handle before hard to pull ...

Page 16: ...has received a separate warranty with product at time of purchase SECTION 2 HUSQVARNA S OBLIGATIONS UNDER THE WARRANTY Husqvarna will repair or replace defective components without charge for parts or labor if a component fails because of a defect in material or workmanship during the warranty period SECTION 3 ITEMS NOT COVERED BY THIS WARRANTY The following items are not covered by this warranty ...

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