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11

FIG. 11

FIG. 12

OIL 
DRAIN
PLUG

OIL FILLER
PLUG

OIL LEVEL

TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE

SAE VISCOSITY GRADES

-20

0

30

40

80

100

-30

-20

0

20

30

40

F
C

32

-10

10

60

5W-30

SAE 30

oil_visc_chart1_e

MAINTENANCE

AIR 
CLEANER 
SCREW

COV ER

AIR CLEAN ER CAR TRIDGE

FIG. 13

Disconnect spark plug wire before performing any maintenance (except car bu re tor adjustment) to 
prevent accidental start ing of engine.

Prevent fi res!  Keep the engine free of grass, leaves, spilled oil, or fuel.  Re move fuel from tank 
before tipping unit for maintenance.  Clean muffl er area of all grass, dirt, and debris. 

Do not touch hot muffl er or cylinder fi ns as contact may cause burns.

ENGINE

LUBRICATION

Use only high quality detergent oil rated with API service 
classifi cation SF-SJ.  Select the oil’s SAE vis cos i ty grade 
according to your expected temperature.

NOTE:

  Although multi-viscosity oils (5W-30, 10W-30, etc.) 

improve starting in cold weather, these multi viscosity oils 
will result in increased oil consumption when used above 
32°F (0°C).  Check your engine oil level more frequently to 
avoid possible engine damage from running low on oil.

Change the oil after every 25 hours of operation or at 
least once a year if the tiller 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.  Add SAE 
30 motor oil or equivalent.  Tighten oil fi ller plug securely 
each time you check the oil level.

TO CHANGE ENGINE OIL (See Figs. 11 and 12)

Determine temperature range expected before oil change.  
All oil must  meet API service classifi cation SF-SJ.
•      Be sure tiller is on level surface.
•      Oil will drain more freely when warm.
•      Catch oil in a suitable container.
•      Remove drain plug.
•      Tip tiller forward to drain oil.
•      After oil has drained completely, replace oil drain plug 

and tighten securely.

•     Remove oil fi ller plug.  Be careful not to allow dirt to 

enter the engine.

•      Refi ll engine with oil.  See “CHECK ENGINE OIL LEVEL” 

in the Operation section of this manual. 

AIR CLEANER (See Fig. 13)  

Service  air cleaner cartridge every twenty-fi ve hours, more 
often if engine is used in very dusty conditions.
•     Loosen air cleaner screws, one on each side of 

cover.

•      Remove air cleaner cover.
•      Carefully remove air cleaner cartridge. Be care ful. Do 

not allow dirt or de bris to fall into carburetor.

•      Clean by tapping gently on a fl at surface.
•      If very dirty or damaged, replace cartridge.
•      Clean and re place cover. Tighten screws securely.

CAUTION:  Petroleum sol vents, such as 
kerosene, are not to be used to clean 
cartridge.  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 cartridge.

For Parts Call K&T 606-678-9623 or 606-561-4983

www.mymowerparts.com

Summary of Contents for SOF550A

Page 1: ...orage Troubleshooting Repair Parts OWNER S MANUAL MODEL NO SOF550A 5 HP 26 Inch Tiller For Parts and Service contact our authorized distributor call 1 800 849 1297 For Technical Assistance call 1 800...

Page 2: ...quipment without proper instruction Keep the area of operation clear of all persons par ticularly small children and pets PREPARATION Thoroughly inspect the area where the equipment is to be used and...

Page 3: ...EST COVERED BRUSH COVERED OR GRASS COVERED LAND UNLESS THE ENGINE S EXHAUST SYSTEM IS EQUIPPED WITH A SPARK ARRESTER MEETING APPLICABLE LOCAL LAWS IF ANY IF A SPARK ARRESTER IS USED IT SHOULD BE MAINT...

Page 4: ...s and hardware you assemble must be tightened securely Use the correct tools as necessary to insure proper tightness TOOLS REQUIRED FOR ASSEMBLY A socket wrench set will make assembly easier Standard...

Page 5: ...G 3 STAKE SPRING TILLER HANDLES CABLE S FIG 2 HANDLE PANEL BOLTS FLAT WASHER HEX BOLT 5 16 18X3 4 TILLER HANDLE HANDLE PANEL NUT LOCK WASHER HEX BOLT 5 16 18X1 ASSEMBLY HANDLE HEIGHT Handle height may...

Page 6: ...DEPTH STAKE TINE SHIELD CHOKE CONTROL FORWARD TINE CONTROL TINES THROTTLE CONTROL FIG 4 MEETS ANSI SAFETY REQUIREMENTS Our tillers conform to the safety standards of the American National Standards I...

Page 7: ...e ment ENGINE Move throttle control to STOP position Never use choke to stop engine TILLING The speed and depth of tilling is regulated by the position of the depth stake and wheel height The depth st...

Page 8: ...til engine reaches start of compression cycle rope will pull slightly harder at this point Pull recoil starter handle quickly Do not let starter handle snap back against starter If engine fires but do...

Page 9: ...bounce and difficult handling of your tiller Hard soil should be moistened before tilling however extremely wet soil will ball up or clump during tilling Wait until the soil is less wet in order to ac...

Page 10: ...CH USE Check engine 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 SERV...

Page 11: ...e crankcase oil level before starting the engine and after each five 5 hours of continuous use Add SAE 30 motor oil or equivalent Tighten oil filler plug securely each time you check the oil level TO...

Page 12: ...e spark plugs at the beginning of each tilling sea son or after every 50 hours of use whichever comes first Spark plug type and gap setting are shown in PRODUCT SPECIFICATIONS on page 3 of this manual...

Page 13: ...t with plug TINE ARRANGEMENT Your outer tines can be assembled in several different ways to suit your tilling or cultivating needs CAUTION Tines are sharp Wear gloves or other protection when han dlin...

Page 14: ...ee Figs 21 and 22 Replace V belts if they have stretched considerably or if they show cracks or frayed edges There are two 2 V belts forward inside and reverse outside Belt guard must be removed to se...

Page 15: ...ADJUST CARBURETOR Thecarburetorhasbeenpresetatthefactoryandadjustment should not be necessary However engine performance can be affected by differences in fuel temperature altitude or load If the car...

Page 16: ...sary See belt re placement instructions in the Service and Adjustments section of this manual Lubricate as shown in the Maintenance section of this manual Be sure that all nuts bolts and screws are se...

Page 17: ...l tank and refill with fresh gasoline 7 Water in fuel 7 Drain fuel tank and carburetor and refill tank with fresh gasoline 8 Clogged fuel tank 8 Remove fuel tank and clean 9 Spark plug wire loose 9 Co...

Page 18: ...13 180847 Bolt Carriage 5 16 18 x 3 4 Gr 5 KEY PART NO NO DESCRIPTION KEY PART NO NO DESCRIPTION 14 181452X417 Panel Handle 16 166377 Handle R H 18 166868 Cable Control Tine 19 151229 Lever Control T...

Page 19: ...t Belt Guard 2 9484R Clip Cable 3 86777 Screw Hex Washer Hd Slotted Thd Cutting 10 24 x 1 2 Type D 4 74610812 Bolt Hex 1 2 20 x 3 4 5 73660600 Nut Hex Lock 3 8 16 6 19131316 Washer 13 32 x 13 16 x 16...

Page 20: ...pth Stake L H KEY PART NO NO DESCRIPTION 15 5388J Spring Stake 16 121117X Bolt Shoulder 17 9188R Wheel 18 19131311 Washer 13 32 x 13 16 x 11 Ga 19 9190R Bracket Wheel 20 73680600 Locknut Crown 3 8 16...

Page 21: ...Y PART NO NO DESCRIPTION 1 156934 Tine Outer R H 2 3146R Retainer Spring 3 156932 Tine Inner R H 4 156931 Tine Inner L H 5 156933 Tine Outer L H 6 4929H Pin Clevis KEY PART NO NO DESCRIPTION For Parts...

Page 22: ...l 126402 Order parts from engine manufac turer KEY PART NO NO DESCRIPTION 1 74760524 Bolt Hex 5 16 18 x 1 1 2 Gr 2 2 74780652 Bolt Hex Fin 3 8 16 x 3 1 4 3 19131311 Washer 13 32 x 13 16 x 11 5 7380060...

Page 23: ...914 Decal Reverse Tine Control 5 141907 Decal Hand Placement 6 176391 Decal Eng Tiller 7 171077 Decal OHV N I C 8 141906 Decal Warning Rotating Tines 9 186245 Decal Hvy Duty 10 171078 Decal Rewind Int...

Page 24: ...anty does not apply to any product which has been subjected to alteration misuse abuse improper assembly or installation delivery damage or to normal wear of the product 5 Exclusions Excluded from thi...

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