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OPERATOR’S MANUAL
FRONT TINE
TILLERS
Models
340 Thru 390
Model 340 Shown
IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY
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 t
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SECTION 1: IMPORTANT SAFE OPERATION PRACTICES WARNING: THIS SYMBOL POINTS OUT IMPORTANT SAFETY INSTRUCTIONS WHICH, IF NOT FOLLOWED, COULD ENDANGER THE PERSONAL SAFETY AND/OR PROPERTY OF YOURSELF AND OTHERS. READ AND FOLLOW ALL INSTRUCTIONS IN THIS MANUAL BEFORE ATTEMPTING TO OPERATE YOUR TILLER. FAILURE TO COMPLY WITH THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY. WHEN YOU SEE THIS SYMBOL— HEED ITS WARNING. WARNING: The Engine Exhaust from this product contains chemicals known to the State
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• Only use accessories approved for this machine • Replace gasoline cap securely and wipe off any by the manufacturer. Read, understand, and follow spilled gasoline before starting the engine as it all instructions provided with the approved may cause a fire or explosion. accessory. • Extinguish all cigarettes, cigars, pipes and other • If situations occur which are not covered by this sources of ignition. manual, use care and good judgment. Contact • Never refuel unit indoors because flammabl
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SECTION 2: FINDING YOUR MODEL NUMBER This Operator’s Manual is an important part of your new tiller. It will help you assemble, prepare and maintain your tiller. Please read and understand what it says. Before you start to prepare your tiller for its first use, please locate the model plate and copy the information from it in this Operators Manual. The information on the model plate is very important if you need help from your dealer or the MTD customer support department. •
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ATTACHING THE TAILPIECE AND DEPTH STAKE Models 340 & 390 Remove the two self-tapping screws on the frame. Hex Slide the tailpiece into the frame, with the lower hole Lock Nut in the tailpiece toward the front. Secure with screws Handle just removed. (See Figure 3.) Spark Brace Plug Tailpiece Lower Hole Model 345 Self-Tapping Screw Spark Plug Figure 3 Handle Brace ATTACHING THE HANDLE ASSEMBLY 1. Remove the hex bolt and cupped washer from the top right side of the frame halves. Hol
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ATTACHING THE CLUTCH CONTROL CABLE(S) REVERSE CABLE (Model 390 Only) FORWARD CABLE The reverse clutch cable is the cable which is Attach the end of the forward cable to the bracket attached closer to the front of the tiller. Attach the underneath the handle assembly as follows. (On end of the reverse cable to the reverse tine drive model 390, the forward clutch cable is the cable clutch lever, above the handle assembly, in the which is attached closer to the rear of the tiller)
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SECTION 6: CONTROLS THROTTLE CONTROL The throttle control lever is located on the engine. It Models 340/390 Choke controls the engine speed and stops the engine. (See Figure 9.) CHOKE LEVER (Model 340/390) The choke lever is located above the throttle control. It is used to enrich the fuel mixture when starting a cold engine. (See Figure 9). PRIMER BUTTON (Model 345) Throttle Control The primer button is located behind the air cleaner. It is used to enrich the fu
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Model 345 WHEEL POSITION The tiller is shipped with the wheels adjusted such 1. Attach spark plug wire to spark plug. Make that the unit sits level. While tilling, as the tines certain the metal loop on the end of the spark enter the ground and the front of the tiller lowers, plug wire (inside the boot) is fastened securely the wheels must be raised to level the unit, which is over the metal tip on the spark plug. essential for proper engine operation. This 2. Make certain
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2. Depth Stake Adjustment: The depth stake acts as a brake for the tiller and controls the depth and speed at which the machine will operate. Remove the clevis pin and hairpin clip to raise or lower depth stake. (See Figure 10.) By increasing the depth of the depth stake, the forward speed of the machine is reduced, and the working depth is increased. (See Figure 12.) When the depth stake is raised, the working depth of the machine is reduced and the forward speed is increased.
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With the outer tines installed, the working width of the machine is 22 or 24 inches. For cultivation, this SECTION 8: ADJUSTMENTS may be reduced to 13 inches by removing the outer WARNING: Disconnect the spark tines. Refer to Tine Width Adjustment in Adjustment plug wire and ground against the section. When laying out plant rows, be sure to engine before performing any allow enough width to permit cultivation between the adjustments, repairs, or maintenance. rows. In growing
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CARBURETOR ADJUSTMENT IMPORTANT: Never run your engine without air cleaner completely assembled. WARNING: If any adjustments are The spark plug should be cleaned and the gap made to the engine while the engine is reset once a season. Spark plug replacement is running (e.g. carburetor), disengage all recommended at the start of each tilling season; clutches and tines. Keep clear of all check engine manual for correct plug type and gap moving parts. Be careful of heated specifications. surfaces
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6. Reassemble the new belt, following instructions in reverse order. Make certain the reverse drive Forward Reverse Idler Pulley belt is assembled with the wide side of the belt Belt against the transmission and engine pulleys. Be certain to adjust the clutch control as instructed in the final clutch adjustment section of assembly instructions Hex Nut Engine Forward Drive Belt (See Figure 19) Pulley 1. Model 340: Remove the belt cover by following step 1and step 2 of the previous section. Model
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SECTION 12: TROUBLE SHOOTING GUIDE Trouble Possible Cause(s) Corrective Action Engine fails to Fuel tank empty, or stale fuel. Fill tank with clean, fresh gasoline. Fuel will not last over start thirty days unless a fuel stabilizer is used. Throttle control lever not in correct Move throttle lever to start position. starting position (if so equipped). Blocked fuel line. Clean fuel line. Dirty aircleaner. Refer to the engine manual packed with your unit. Choke not in ON position. Move switch to
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Model 340-345 14
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Model 340-345 REF. REF. NO. PART NO. DESCRIPTION NO. PART NO. DESCRIPTION CODE CODE 2 712-3004A Hex Flange L-Nut 5/16-18 29 720-0274 Grip—Handle Thd. (Gr. 5) 31 736-0140 Fl-Wash. .385" I.D. x .62" O.D. 3 786-0004 Tail Piece Brkt. (R.H.) 35 731-1645A Clutch Handle Holder 4 786-0003 Tail Piece Brkt. (L.H.) 36 720-0269 Grip—Clutch 5 710-0805 Hex Bolt 5/16-18 x 1.5" Lg. 38 686-0083 Clutch Handle Ass’y. 7 750-0890 Spacer .32" I.D. x .75" O.D. 39 710-0189 Hex Bolt 5/16-18 x 3" Lg.* 8 786-0005 Depth Ba
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Model 340-345 16
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Model 340-345 REF. PART REF. PART NO. NO. CODE DESCRIPTION NO. NO. CODE DESCRIPTION 1 786-0056 Belt Cover 26 756-0972 Outer Engine Pulley Half 2 736-3020 Fl-Wash. .266" I.D. x .625" O.D. 27 756-0971 Inner Engine Pulley Half 3 710-0599 Hex Wash. Hd. TT-Tap Scr. 1/4-20 28 756-0585 Fl-Pulley 6" Dia. x .5" Lg. 30 754-0428 “V”-Belt 4 712-0392 Hex L-Stop Nut 1/4-28 Thd. 31 748-0350 Pulley Mounting Adapter 5 712-3004A Hex Flange Top L-Nut 5/16-18 Thd. 32 736-0112 Bell-Wash. .535" I.D. x 1.5" O.D. 6 786
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Model 390 18
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Model 390 REF. REF. PART NO. CODE DESCRIPTION PART NO. CODE DESCRIPTION NO. NO. 2 712-3004A Hex Flange L-Nut 5/16-18 Thd. 33 686-0014A N Reverse Handle Ass’y. (Gr. 5) 34 726-0135 Cap Speed Nut 3 786-0004 Tail Piece Brkt. (R.H.) 35 731-1645A Clutch Handle Holder 4 786-0003 Tail Piece Brkt. (L.H.) 36 720-0269 Grip–Clutch 5 710-0805 Hex Bolt 5/16-18 x 1.5" Lg. 38 686-0083 Clutch Handle Ass’y. 7 750-0890 Spacer .32" I.D. x .75" O.D. 39 710-0189 Hex Bolt 5/16-18 x 3" Lg. 8 786-0005 Depth Bar 40 649-
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Model 390 20
