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•   Keep children and pets away.
•  Do not overload the machine capacity by attempting 

to till too deep at too fast a rate.

• 

Never operate the machine at high speeds on slippery 

surfaces. Look behind and use care when backing.

•  Never allow bystanders near the unit.
•   Use only attachments and accessories approved by 

the manufacturer of the tiller.

•  Never operate the tiller without good visibility or light.
•   Be careful when tilling in hard ground. The tines may 

catch in the ground and propel the tiller forward.  If this 

occurs, let go of the handlebars and do not restrain the 

machine.

MAINTENANCE AND STORAGE

•  Keep machine, attachments, and accessories in safe 

work ing condition.

•  Check shear pins, engine mounting bolts, and other 

bolts at frequent intervals for proper tightness to ensure 

the equip ment is in safe working condition.

•   Never store the machine with fuel in the fuel tank inside 

a building where ignition sources are present, such 

as hot water and space heaters, clothes dryers, and 

the like. Allow the engine to cool before storing in any 

enclosure.

•  Always refer to the operator’s guide instructions for 

im por tant details if the tiller is to be stored for an ex-

tended period.

- IMPORTANT -

CAUTIONS, IMPORTANTS, AND NOTES ARE A MEANS OF 

ATTRACTING ATTENTION TO IMPORTANT OR CRIT I CAL 

IN FOR MA TION IN THIS MANUAL. 

IMPORTANT:  

USED TO ALERT YOU THAT THERE IS A 

POS SI BIL I TY OF DAM AG ING THIS EQUIP MENT.

NOTE: 

Gives essential information that will aid you to bet-

ter un der stand, incorporate, or execute a particular set of 

instructions.

Look for this symbol to point out im-

 por tant safety precautions.  It means

CAUTION!!!  BE COME ALERT!!!  YOUR 

SAFE TY IS INVOLVED.

CAUTION:  Always disconnect spark 

plug wire and place wire where it can-

 not contact spark plug in order to pre-

 vent ac ci den tal starting when setting 

up, trans port ing, adjusting or making 

re pairs.

SAFETY RULES

Safe Operation Practices for Walk-Behind Powered Ro ta ry Tillers

TRAINING

•  Read the Owner’s Manual care ful ly. Be thor ough ly 

fa mil iar with the controls and the proper use of the 

equip ment. Know how to stop the unit and disengage 

the controls quickly.

•   Never allow children to operate the equipment. Never 

allow adults to op er ate the equipment without proper 

instruction.

•   Keep the area of operation clear of all persons, par-

 tic u lar ly small children, and pets.

PREPARATION

•  Thoroughly inspect the area where the equipment is 

to be used and remove all foreign objects.

•   Disengage all clutches and shift into neutral before 

starting the engine (mo tor).

• 

Do not operate the equipment with out wearing ad e quate 

outer gar ments. Wear footwear that will im prove footing 

on slippery surfaces.

•   Handle fuel with care; it is highly flammable. 
•  Use an approved fuel container. 
•  Never add fuel to a running engine or hot engine. 
• 

Fill fuel tank outdoors with extreme care. Never fill fuel 

tank indoors.

•  Replace gasoline cap securely and clean up spilled 

fuel before restarting.

•  Use extension cords and receptacles as specified by 

the manufacturer for all units with electric drive motors 

or electric starting motors.

•   Never attempt to make any adjustments while the 

engine (motor) is running (except where specifically 

rec om mend ed by manufacturer).

OPERATION 

•   Do not put hands or feet near or under rotating parts.
•   Exercise extreme caution when op er at ing on or cross-

 ing gravel drives, walks, or roads. Stay alert for hidden 

hazards or traffic. Do not carry pas sen gers.

•   After striking a foreign object, stop the engine (motor), 

remove the wire from the spark plug, thoroughly in spect 

the tiller for any damage, and repair the damage before 

restarting and op er at ing the tiller.

•  Exercise caution to avoid slipping or falling.
•  If the unit should start to vibrate ab nor mal ly, stop the 

engine (motor) and check immediately for the cause. 

Vi bra tion is generally a warning of trouble.

•  Stop the engine (motor) when leaving the operating 

position.

• 

Take all possible precautions when leav ing the ma chine 

unattended.  Disengage the tines, shift into neutral, and 

stop the engine.

•   Before cleaning, repairing, or inspecting, shut off the 

engine and make certain all moving parts have stopped. 

Disconnect the spark plug wire, and keep the wire away 

from the plug to prevent accidental starting. Disconnect 

the cord on electric motors.

•   Do not run the engine indoors; exhaust fumes are 

dangerous.

•   Never operate the tiller without proper guards, plates, 

or other safety protective devices in place.

WARNING

The engine exhaust from this product con-

 tains chem i cals known to the State of Cal i-

 for nia to cause cancer, birth defects, or other 

reproductive harm.

Summary of Contents for 433691

Page 1: ...01 12 10 AP 433691 Printed in the U S A Operator s manual 96083000300 2010 01 MC550...

Page 2: ...t Never allow adults to operate the equipment without proper instruction Keep the area of operation clear of all persons par ticularly small children and pets PREPARATION Thoroughly inspect the area w...

Page 3: ...STION 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...

Page 4: ...S POSITION FRONT Fig 2 Fig 3 UNPACK CARTON INSTALL HANDLE See Fig 2 and 3 CAUTION Be careful of exposed staples when handling or disposing of carton material IMPORTANT WHENUNPACKINGANDASSEMBLINGTILLER...

Page 5: ...ration before first use See TINE OPERATION CHECK in the Service and Adjustments section of this manual TO INSTALL DEPTH STAKE See Fig 4 Remove screw s securing depth stake to skid and discard the scre...

Page 6: ...eaning Fig 5 MEETS ANSI SAFETY REQUIREMENTS Our tillers conform to the safety standards of the American National Standards Institute DEPTH STAKE Controls forward speed and the depth at which the tille...

Page 7: ...ition Replace the clevis pin and hairpin clip For normal tilling set depth stake at the second or third hole from the top Fig 7 HOW TO USE YOUR TILLER Know how to operate all controls before adding fu...

Page 8: ...aintenance section of this manual Fig 8 TO START ENGINE See Fig 9 OPERATION IMPORTANT WHENOPERATINGINTEMPERATURESBELOW 32 F 0 C USE FRESH CLEAN WINTER GRADE GASOLINE TO HELP ENSURE GOOD COLD WEATHER S...

Page 9: ...season to further condition the soil Soilconditionsareimportantforpropertilling Tineswill notreadilypenetratedry hardsoilwhichmaycontribute to excessive bounce and difficult handling of your tiller Ha...

Page 10: ...ine oil level Check tine operation Check for loose fasteners LUBRICATION Keep unit well lubricated See LUBRICATION CHART MAINTENANCE SCHEDULE FILL IN DATES AS YOU COMPLETE REGULAR SERVICE Check Engine...

Page 11: ...surface 3 Tiptilleronitssideasshownanddrainoilintoasuitable container Rock tiller back and forth to remove any oil trapped inside of engine 4 Wipe off any spilled oil from tiller or side of engine 5...

Page 12: ...eginning of each tilling season Spark plug type and gap setting are shown in PRODUCT SPECIFICATIONS on page 3 of this manual TRANSMISSION Your transmission is sealed and will not require lubrication u...

Page 13: ...shaft Fig 18 NARROW TILLING CULTIVATING 13 PATH See Fig 18 Remove outer tines tine_6 INNER TINES ONLY NOTE When reassembling outer tines ensure right tine assembly marked R and left tine assembly mark...

Page 14: ...GINE ASSEMBLY in this section of manual Using pliers remove cable spring and return spring from pivot bracket Remove plastic snap in plug from clutch housing Usingpliers depressconduitfittingtabsandpu...

Page 15: ...g 23 Unscrew top or bottom handle knob and washer and remove top or bottom carriage bolt Rotate entire handle assembly about carriage bolt pivot point and lay handle against engine shroud STORAGE TILL...

Page 16: ...nk and refill and clean carburetor 6 Stale or dirty fuel 6 Empty fuel tank and refill with fresh gasoline 7 Water in fuel 7 Empty fuel tank and carburetor and refill tank with fresh gasoline 8 Clogged...

Page 17: ...ODEL NUMBER MC550 96083000300 DECALS KEY PART NO NO DESCRIPTION 1 433415 Decal Tine Shield McCulloch 2 434458 Decal Tine Shield Warning 3 141906 Decal Warning Rotating Tines 4 141907 Decal Hand Placem...

Page 18: ...8 engine transmission tines_1 10 11 1 2 2 3 4 5 5 6 7 7 9 8 12 13 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 5 29 29 30 30 31 5 TILLER MODEL NUMBER MC550 96083000300 ENGINE TRANSMISSION AND TINES...

Page 19: ...Pivot 11 421373 Spring Return 12 421339 Bracket Idler 13 74610616 Bolt Hex 3 8 24 x 1 14 421379 Belt Drive 15 421378 Pulley Idler 16 19131416 Washer 13 32 x 7 8 x 16 Ga 17 74780620 Bolt 3 8 16 x 1 25...

Page 20: ...20 TILLER MODEL NUMBER MC550 96083000300 HANDLE WHEEL AND DEPTH STAKE Handles Wheels Depth Stake_1 ai 1 2 3 7 4 13 14 9 10 18 10 18 12 11 17 19 17 22 20 19 21 5 5 23 15 16 17 20 21 8 5 6 22 23...

Page 21: ...425398 Plug Snap In 11 432521 Weldment Transport Arm 12 4921H Clip Hairpin 13 421342 Stake Depth 14 326J Pin Clevis 15 72110610 Bolt 3 8 16 x 1 1 4 16 74780640 Screw Hex Head 3 8 16 x 2 5 17 73900600...

Page 22: ...s used for rental or commercial purposes is limited to 90 days from the date of original purchase 5 This Warranty applies only to products which have been properly assembled adjusted operated and main...

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