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Troy-Bilt 634A - page 1
Rear-tine Tiller Models 630C—T uffy ® 634F—Bronco TM 634A—Super Bronco TM Model 634A Shown Oper ator’ s Man ual PRINTED IN U.S. A. 770-10594D.fm 11/19/03 FORM NO. IMPOR T ANT : Read saf ety rules and instructions carefully before oper ating equipment. Warning: This unit is equipped with an internal co mbustion engine and should not be used ...
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Troy-Bilt 634A - page 2
2 TABLE OF CONTENTS FINDING MODEL NUMBER This Operator’s Ma nual is an important part of your new lawn tractor. It will help you assemble , prepare and maintain the unit for best performance. Please r ead and understand wha t it says. Before you start as sembling your new equipment , please locate the mod el plate on the equipment and copy the in ...
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Troy-Bilt 634A - page 3
3 Training 1. Carefully read this Own- er’ s Manual, the separate Engine Owner’ s Manual, and any other literature you may receive. Be thoroughly familiar with the controls and the proper use of the tiller and its en- gine. Know how to stop the unit and disen- gage the controls quickly . 2. Never allow children to operate the tiller . Never all ...
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Troy-Bilt 634A - page 4
4 4 . Exercise caution to avoid slipping or fall- ing. 5 . If the unit should start to vibrate abnor- mally , stop the engine, disconnect the spark plug wire and prevent it from touch- ing the spark plug, and check immediately for the cause. Vibration is generally a warning of trouble. 6 . Stop the engine, disconnect the spark plug wire and prevent ...
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Troy-Bilt 634A - page 5
5 Decals For your safety and the safety of others, vari- ous safety and operational decals are located on your unit (see Figure 1-2). Keep the decals clean and legible at all times. Contact your local service dealer or the factory for replacements if any decals are damaged or missing. Refer to the Parts List pages in this Manual for decal locations ...
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Troy-Bilt 634A - page 6
6 WARNING: To prevent personal injury or property damage, do not start the engine until all assembly steps are complete and you have read and understand the safety and operating instructions in this manual. INTRODUCTION Carefully follow these assembly steps to correctly prepare your tiller for use. It is recommended that you read this Section in it ...
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Troy-Bilt 634A - page 7
7 3. Slide the wheel fully inward on the wheel shaft (N, Fig. 2-3). Reinstall the wheel drive pin (M) through the wheel shaft only (not through the wheel hub). Secure the wheel drive pin with the hairpin cotter (L), pushing the hairpin cotter in as far as it will go. The wheel should now spin freely (freewheel) on the wh eel shaft. Repeat with the ...
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Troy-Bilt 634A - page 8
8 4. Check for correct tens ion on the for ward 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 outermost coil to the outermost coil. b. Squeeze the Forward Clutch Bail against the handlebar (see ...
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Troy-Bilt 634A - page 9
9 STEP 6: CHECK TRANSMISSION OIL LEVEL The transmission was filled with gear oil at the factory . However , you should check the gear oil level at this time to make certain it is correct. IMPORT ANT : Do not operate the tiller if the gear oil level is low . Doing so will result in severe damage to the transmission com- ponents. 1. With the tiller o ...
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Troy-Bilt 634A - page 10
10 WARNING: Before operating your machine, carefully read and understand all safety, controls and operating instructions in this Manual, the separate Engine Owner’s Manual, and on the decals on the machine. Failure to follow these instructions can result in serious personal injury. INTRODUCTION This Section describes the location and function of ...
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Troy-Bilt 634A - page 11
11 WARNING: Before starting engine, be sure that both wheels are in WHEEL DRIVE position. See Wheels Drive Pins for instructions. Engaging the Forward Clutch Bail or Reverse Clutch Control (if equipped) when the wheels are not in WHEEL DRIVE could allow the tines to rapidly propel the tiller forward or backward. Failure to comply could cause loss o ...
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Troy-Bilt 634A - page 12
12 WARNING: Before operating your machine, carefully read and understand all safety (Section 1), controls (Section 3) and operating instructions (Section 4) in this Manual, the separate Engine Owner’s Manual, and on the decals on the machine. Failure to follow these instructions can result in serious personal injur y . INTRODUCTION Read this Oper ...
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Troy-Bilt 634A - page 13
13 Stopping the Engine an d Tiller 1. T o stop the wheels and tines, release the Forward Clutch Bail (all models) or the Re- verse Clutch Control (Models 634F and 634A) — whichever control is in use. 2. T o stop the engine, put the ignition switch and/or the throttle control lever in the “OFF” or “STOP” position. OPER ATING THE TILLER The ...
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Troy-Bilt 634A - page 14
14 • When preparing a seedbed, go over the same path twice in the first row, then overlap one-half the tiller width on the rest of the passes (se e Fig. 6). When fin- ished in one direction, make a second pass at a right angle, as shown in Fig. 4-7. Overlap each pass for be st results (in ver y hard ground, it may tak e three or four passes to th ...
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Troy-Bilt 634A - page 15
15 Power composting simply means tilling under and bur ying in the soil all manner of organic matter such as crop residues, leaves, grass clippings and cover crops. This material will de- compose during the non-growing season and add important natural nutrients to the soil. The first place to begin is with crop residues such as l eftover vines, sta ...
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Troy-Bilt 634A - page 16
16 The tines have a s elf-clearing action which eliminates most tangling of de bris in the tines. However , occasionally dry grass, stringy stalks or tough vines may be- come tangled. Follow these procedure s to help avoid tangling and to clean the tines, if necessary . • T o reduce tangling, set the de pth regulator deep eno ugh to get maximum ? ...
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Troy-Bilt 634A - page 17
17 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. Remove ignition key on electric start models. Failure to follow these instructions can result in serious personal injury or property damage. NOTES 1 - ...
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Troy-Bilt 634A - page 18
18 4. The gear oil level is correct if the gear oil is approximately halfway up the side of the main drive shaft. 5. If the gear oil level is low , add gear oil as described next. If th e gear oil level is okay , securely replace the oil fill plug. IMPORT ANT : Do not operate the tiller if the gear oil level is low . Doing so will result in severe ...
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Troy-Bilt 634A - page 19
19 CHECKING AND ADJUSTING FORW ARD DRIVE BELT TENSION It is important to maintain correct tension on the for ward drive belt. A loo se b elt will cause the tines and wheels to sl ow do wn — or stop completely — even though the en- gine is running at full speed. A too tight belt can result in u nintentional tine move- ment when the clutch bail i ...
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Troy-Bilt 634A - page 20
20 FORW ARD CLUTCH BAIL ADJUSTMENT If the Forward Clutch Bail does not func- tion properly , first check that the forward drive belt is adjusted properly (see Check- ing and Adjusting Forward Drive Belt T en- sion ). If this fails to correct the problem, contact T roy-Bilt LLC or your authorized dealer for service advice. CHECKING AND ADJUSTING RE- ...
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Troy-Bilt 634A - page 21
21 3. Clean around the oil dipstick or oil fill tube (whichever applies) to prevent dirt from falling into the crankcase. 4. On engines with an oil fill tube, remove the fill cap and add oil (if required) until it reaches the top of the fill tube. Reinstall the fill cap. 5. On engines with a dipstick, remove it and wipe it clean. Reinsert the dipst ...
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Troy-Bilt 634A - page 22
22 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE CORRECTION Engine does not start 1. Spark plug wire disconnected. 1. Reconnect wire. 2. Engine Throttle Control L e ver incorrectly set. 2. Put lever in ST ART position. 3. Fuel tank em pty . 3. Add fuel. 4. Choke control (if so equipped) in inco rrect position. 4. See Engine Owner’ s Manual. 5. Stale gas ...
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Troy-Bilt 634A - page 23
TR O Y -BIL T TILLER LIFETIME LIMITED W ARRANTY WHAT PRODUCT All Troy-Bilt brand ed rear tin e walk-behind tillers with gear drive transmissions. IS COVERED This warranty begins on the date of p urchase and is warranted by Troy-Bilt LLC fo r the life of the tiller, to the origin al purchaser only. WHAT IS COVERED Troy-Bilt LLC will, at its option, ...
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