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Operator’s Manual
Rear-tine Tiller Models
®
630C—Tuffy
TM
634A—Super Bronco
634K—ProLine
Model 634A Shown
IMPORTANT: Read safety rules and instructions carefully before operating equipment.
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
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TABLE OF CONTENTS Content Page Content Page Customer Support 2 Maintenance 17 Safety 3 Off-season Storage 21 Assembly 6 Troubleshooting 22 Features and Controls 10 Parts List 23 Operation 12 Warranty Back Cover FINDING MODEL NUMBER This Operator’s Manual is an important part of your new lawn tractor. It will help you assemble, prepare and maintain the unit for best performance. Please read and understand what it says. Before you start assembling your new equipment, please locate the model plat
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SECTION 1: SAFETY This machine meets voluntary safety stan- dard B71.8 – 1996, which is sponsored by the Outdoor Power Equipment Institute, Inc., and is published by the American National Standards Institute. Forward Clutch Bail Reverse Clutch Control (Models 634A) WARNING Depth Regulator The engine exhaust from this product contains chemicals known to the State of California to Tine Hood Flap cause cancer, birth defects or other reproduc- Safety Alert Symbol This is a safety alert symbol
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4. Exercise caution to avoid slipping or fall- If in doubt about the tilling conditions, al- 24. Do not touch engine parts which may ing. ways use the following operating precau- be hot from operation. Let parts cool down tions to assist you in maintaining control sufficiently. 5. If the unit should start to vibrate abnor- of the tiller: mally, stop the engine, disconnect the 25. Please remember: You can always stop a. Walk behind and to one side of the spark plug wire and prevent it from tou
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Decals Reverse Clutch Control Forward Clutch Bail For your safety and the safety of others, vari- Operating Instruction (Models 634A) ous safety and operational decals are located on your unit (see Figure 1-2). Keep the decals clean and legible at all times. Starting Stabilization Contact your local service dealer or the factory Message (on engine) for replacements if any decals are damaged or missing. Warning Messages Refer to the Parts List pages in this Manual for decal locations, des
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SECTION 2: ASSEMBLY WARNING: To prevent ASSEMBLY STEPS personal injury or property STEP 1: UNPACKING INSTRUCTIONS damage, do not start the engine NOTE: While unpacking, do not severely until all assembly steps are bend any control cables. complete and you have read and understand the safety and 1. The tiller weighs approximately 133 lbs. operating instructions in this Do not attempt to remove it from the ship- manual. ping platform until instructed to do so in 1 1 these Assembly steps
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K M O N L Fig. 2-3: Wheel in FREEWHEEL position G I H A STEP 4: INSTALL FORWARD CLUTCH CABLE 1. Carefully unwrap the forward clutch ca- F ble (cable without an attached knob) from its shipping position and slide the thin ca- G ble wire (T, Fig. 2-4) into the slot in the ca- E ble bracket. Push the cable connector (U, Fig. 2-4) up through the hole in the bracket until the groove in the connector snaps C F into place. 2. Thread the #10-24 hex nut (Z, Fig. 2-5) halfway onto the screw (V) wh
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BRONCO 4. Check for correct tension on the forward drive belt by taking two measurements of the cable spring, as follows: a. With the Forward Clutch Bail (Y, Fig. 2- 6) in an open (released) position, measure the length of the cable spring (W) from the Z outermost coil to the outermost coil. X b. Squeeze the Forward Clutch Bail against the handlebar (see Fig. 2-7) and re-mea- sure the spring length. The belt tension is correct if this second measurement is be- Hold bail against handlebar w
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STEP 6: CHECK TRANSMISSION STEP 7: ADD MOTOR OIL STEP 8: CHECK HARDWARE OIL LEVEL The tiller is shipped without oil in the en- Check all nuts and screws for tightness. gine. The transmission was filled with gear oil at STEP 9: CHECK AIR PRESSURE IN the factory. However, you should check the IMPORTANT: Do not start the engine with- TIRES (units with pneumatic tires) gear oil level at this time to make certain it out first adding motor oil. Severe engine Check the air pressure with a tire
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SECTION 3: FEATURES AND CONTROLS WARNING: Before operating your machine, carefully read and understand all safety, controls and operating instructions in this Manual, the separate Engine Forward Clutch Bail Reverse Clutch Control Owner’s Manual, and on the (Model 634A) decals on the machine. Failure to follow these instructions can result in Depth Regulator serious personal injury. INTRODUCTION Handlebar Height Adjustment This Section describes the location and function of the contro
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begin tilling at a very shallow depth setting WARNING: Use extreme and gradually increase the tilling depth. caution when reversing or A pulling the machine towards WARNING: Do not attempt you. Look behind to avoid D to till too deeply too quickly. obstacles. B Gradually work down to deeper Never attempt to till in reverse. tilling depths. Failure to follow this warning Place the Depth Regulator could result in personal injury Lever in the “travel” position C or property damage. be
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SECTION 4: OPERATION 1. Complete the Pre-Start Checklist on this WARNING: Before Reverse Clutch Control page. operating your machine, (Model 634A) carefully read and understand 2. Put the wheels in the WHEEL DRIVE po- all safety (Section 1), controls sition (see Wheel Drive Pins in Section 3 of (Section 3) and operating this manual). instructions (Section 4) in this WARNING: To help Forward Manual, the separate Engine Clutch Bail prevent serious personal injury Owner’s Manual, and on
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4. For forward motion of the wheels and (b) Swing the handlebar to the left so the tines: right wheel takes a “step” backward. Next (a) Pull Forward Clutch Bail (Fig. 4-1) up swing the handlebar to the right so the left against handlebar. Release bail to stop for- wheel “steps” backward. Repeat as needed. ward motion of wheels and tines. (c) If longer distances need to be covered (b) When tilling, relax and let the wheels in reverse, shut off the engine, then place pull the unit while the t
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TILLING TIPS & TECHNIQUES Avoid pushing down on the handlebars in an attempt to force the tiller to dig deeper. Doing Tilling Depths so takes the weight off the powered wheels, causing them to lose traction. Without the wheels helping to hold the tiller back, the tines will attempt to propel the tiller – often causing the tiller WARNING: Before to skip rapidly across the ground. (Sometimes, slight downward pressure on the handlebars tilling, contact your will help get through a particularly
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TILLING TIPS & TECHNIQUES (CON’T) Power Composting Power composting simply means tilling under and burying in the soil all manner of organic WARNING: When power matter such as crop residues, leaves, grass clippings and cover crops. This material will de- composting, do not keep the compose during the non-growing season and add important natural nutrients to the soil. Depth Regulator Lever at a deep setting if the tiller jumps The first place to begin is with crop residues such as leftover v
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TILLING TIPS & TECHNIQUES (CON’T) Terrace Gardening (continued) To create a terrace, start at the top of the slope and work down. Go back and forth across the first row as shown in Fig. 4-10. Each succeeding lower terrace is started by walking below the terrace you’re pre- paring. For added stability of the tiller, always keep the uphill wheel in the soft, new- ly tilled soil. Do not till the last 12" or more of the downhill outside edge of each terrace. This untilled strip helps prevents t
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SECTION 5: MAINTENANCE If a cover is leaking, check for loose WARNING: Before TILLER LUBRICATION screws. If the screws are tight, a new inspecting, cleaning or servicing After every 10 operating hours, oil or gasket or oil seal may be required. the machine, shut off engine, grease the lubrication points shown in wait for all moving parts to come If the leak is from around a shaft and oil Figure 5-1 and described below. to a complete stop, disconnect seal, the oil seal probably needs
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WARNING: Before inspecting, cleaning or servicing the machine, shut off engine, wait for all moving parts to come to a complete stop, disconnect spark plug wire and move wire away from spark plug. Failure to follow these instructions can result in serious personal injury or property damage. 4. The gear oil level is correct if the gear oil B. To Drain the Transmission Gear Oil: BOLO TINES is approximately halfway up the side of the The transmission gear oil does not need to The bolo tines wi
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WARNING: Before inspecting, cleaning or servicing the machine, shut off engine, wait for all moving parts to come to a complete stop, disconnect spark plug wire and move wire away from spark plug. Failure to follow these instructions can result in serious personal injury or property damage. b Unthread the hex nut (C, Figure 5-4) halfway up the adjustment screw (D). c. Unhook the top of the spring from the Forward Clutch Bail. d. Use pliers to prevent the adjuster (B) from turning and turn
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WARNING: Before inspecting, cleaning or servicing the machine, shut off engine, wait for all moving parts to come to a complete stop, disconnect spark plug wire and move wire away from spark plug. Failure to follow these instructions can result in serious personal injury or property damage. 5. Release the Reverse Clutch Control Replacement Belt Information FORWARD CLUTCH knob.and then unthread the inner jam nut If the drive belt needs to be replaced, see BAIL ADJUSTMENT (C, Figure 5-6) one
