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Front Tine Tiller

Model Number

21A-392B401

OPERATOR’S MANUAL

IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

MTD LLC P.O. BOX 361131 CLEVELAND, OHIO 44136-0019

Warning: 

This unit 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 California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have 
similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized 
service dealer or contact the service department, P.O. Box 361131 Cleveland, Ohio 44136-0019.

PRINTED IN U.S.A.

FORM NO. 

770-10461A.fm

(11/01)

Summary of Contents for 21A-392B401

Page 1: ...uipped 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 California the...

Page 2: ...ed below For future reference please copy the model number and the serial number of the equipment in the space below ENGINE INFORMATION The engine manufacturer is responsible for all engine related is...

Page 3: ...Disengage clutch levers and shift if provided into neutral N before starting the engine 4 Never leave this machine unattended with the engine running 5 Never attempt to make any adjustments while engi...

Page 4: ...If situations occur which are not covered in this manual use care and good judgment Contact your dealer or telephone 1 800 800 7310 for assistance and the name of your nearest servicing dealer Mainte...

Page 5: ...removed Attaching The Handle Assembly Remove the hex bolt and cupped washer from the top right side of the frame halves Hold the cable guide bracket on the left side of the frame as it will fall when...

Page 6: ...tine engagement lever If an excessive noise is heard when releasing either the tine drive clutch handle or lever the cable may be too loose Adjust either the forward or reverse clutch cable by looseni...

Page 7: ...ing the tiller Pull the throttle completely back to stop the engine Choke Lever The choke lever is located near the throttle control It is used to enrich the fuel mixture when starting a cold engine E...

Page 8: ...deep tilling Forward speed will decrease in this position See Figure 8 Depth Stake Adjustment The depth stake acts as a brake for the tiller and controls the depth and speed at which the machine will...

Page 9: ...ed to 13 inches by removing the outer tines Refer to the Adjustment Section When laying out plant rows be sure to allow enough width to permit cultivation between the rows In growing corn or similar c...

Page 10: ...nance instructions Maintain engine oil as instructed in the separate engine manual packed with your unit Read and follow instructions carefully Service air cleaner every ten hours under normal conditi...

Page 11: ...drive belt is assembled with the wide side of the belt against the transmission and engine pulleys Be certain to adjust the clutch control as instructed in the Assembly Section Figure 14 Forward Drive...

Page 12: ...uipped 4 Choke not in ON position 5 Blocked fuel line 6 Faulty spark plug 7 Engine flooded 1 Connect wire to spark plug 2 Fill tank with clean fresh gasoline 3 Move throttle lever to start position 4...

Page 13: ...13 Notes...

Page 14: ...del 392 6 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 30 37 30 43 44 45 46 47 48 49 1 2 3 4 5 2 7 50 51 52 53 54 55 55 57 58 59 60 61 62 53 5...

Page 15: ...08 Hex Bolt 5 16 18 Gr 5 34 786 0129 Cable Guide Bracket 35 710 0604A Hex Wash Screw 5 16 18 x 62 36 710 0602 Hex Wash Hd TT Tap Scr 37 738 0934 Shdl Bolt 5 16 18 38 786 0138A Frame R H 39 786 0139A F...

Page 16: ...16 Model 392 3 17 18 21 19 16 42 43 45 46 4 5 7 11 2 1 6 8 9 10 15 14 44 37 40 22 39 41 36 38 33 12 13 30 29 32 31 34 35 28 27 48 47 25 26 24 24 23 20 49 19...

Page 17: ...Pulley Mounting Adapter 27 736 0112 Bell Wash 525 I D x 1 5 O D 28 712 3029 Hex Jam Nut 1 2 20 Thd Gr 5 29 732 0697 Return Spring 30 786 0040B Reverse Bracket 31 736 0119 Lock Washer 5 16 32 710 0237...

Page 18: ...18...

Page 19: ...19...

Page 20: ...such as lubricants filters blade sharpening tune ups brake adjustments clutch adjustments deck adjustments and normal deterioration of the exterior finish due to use or exposure d MTD LLC does not ex...

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