Husqvarna XT721F Owner'S Manual Download Page 11 | Manualshive

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Husqvarna XT721F Owner'S Manual Download Page 11

11

MAINTENANCE

ENGINE

LUBRICATION

Use only high quality detergent oil rated with API service
classifi cation SG–SL. Select the oil's SAE viscosity grade
according to your expected operating temperature.

CONTAINER

FIG. 12

4. Wipe off any spilled oil from lawn mower or side of

engine.

5. Slowly pour oil down the oil fi ll spout, stopping every

few ounces to check the oil level with the dipstick.

6. Stop adding oil when you reach the FULL mark on the

dipstick. Wait a minute to allow oil to settle.

7. Continue adding small amounts of oil, rechecking the

dipstick until oil level settles at FULL. DO NOT over-
fi ll, or engine will smoke heavily from the muffl er on
startup.

8. Always be sure to retighten oil dipstick before starting

engine.

9. Re con nect spark plug wire to spark plug.

AIR FILTER (See Fig. 14)

Your engine will not run properly and may be damaged by
using a dirty air fi lter. Replace the air fi lter every 100 hours of
operation or every season, whichever occurs fi rst. Service
air cleaner more often under dusty conditions.

TO CLEAN AIR FILTER

1. Remove cover.

2. Carefully remove cartridge.

3. Clean by gently tapping on a fl at surface. If very dirty,

replace cartridge.

CAUTION: Petroleum solvents, such as
ker o sene, are not to be used to clean
car tridge. They may cause de te ri o ra tion
of the cartridge. Do not oil car tridge.
Do not use pres sur ized air to clean or
dry car tridge.

4. Install cartridge, then replace cover.

Change the oil after every 25 hours of operation or at least
once a year if the lawn mower is not used for 25 hours in
one year.

Check the crankcase oil level before starting the engine
and after each fi ve (5) hours of continuous use. Tighten oil
plug securely each time you check the oil level.

TO CHANGE ENGINE OIL (See Fig. 12)

NOTE: Before tipping lawn mower to drain oil, empty fuel
tank by running engine until fuel tank is empty.

1. Disconnect spark plug wire from spark plug and place

wire where it cannot come in contact with plug.

2. Remove engine oil cap; lay aside on a clean surface.

3. Tip lawn mower on its side as shown and drain oil into

a suitable container. Rock lawn mower back and forth
to remove any oil trapped inside of engine.

CARTRIDIGE

COVER

SLOT

BACK
PLATE

FIG. 14

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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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