Instruction/ maintenance manual of the product 721 Troy-Bilt
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Single Stage Snow Th rower Model s 521 & 72 1 PRI N TE D IN U .S. A. Oper at or’ s Ma n ual FORM NO . 769-00309. fm (8/2002) IM PO RT AN T : Re ad saf ety rules a nd instruction s care fully bef ore oper atin g equipmen t. TRO Y-BIL T LLC. P . O .
2 TABL E OF CO NTENT S Conten t Page Imp ortan t Safe Operat ion P rac tices . .. ..... .. ..... .. ..... .. ... ..... .. ..... .. ..... .. ..... .. ..... .. ..... .. ..... ... .. ... 3 Assembli ng Your Snow T hrowe r ... ... .. ..... .. ..... .. ....
3 SECT I ON 1: I M POR TA NT SA FE OPE RAT IO N PR AC TICE S DANG E R: This machine w as built to be oper ated according to the r ules for safe op eration in this manual. As with any type of power equipment, carelessness or error on the part of the operator can result in serious inj ury.
4 4. Never oper ate wi th a mis sing or damag ed disch arge chute . Keep al l saf ety dev ices i n place and wo rking. 5. Never ru n an e ngine indoo rs or in a poor ly ven tila ted area. Engine exhau st cont ains ca rbon m onoxide , an odorl ess and d eadl y gas.
5 SECTION 2: ASSEMBLING YOUR SNOW THROWE R Unp a cki ng F rom Car ton • Cut along corners of the carton and la y it down flat. Remove packi ng materi al. • Remove any loose pa rts included with unit (i.e., operator ’ s manua l, etc.). • Roll unit out of carton.
6 handle. Hold t he “ Z ” fitting with the pliers, not the cable, to av oid damaging th e cable. NOTE: The upper hol e in the control handle provides for adjustmen t in belt tension. Ref er to page 9 of this manual for instructions. Assemblin g Dischar ge C hute • Turn the chute c rank until the chute faces straight to the front.
7 D is c har g e C hut e The angle of the d ischarge chute con trol s the dist ance that the snow is thrown. Tilt the discha r g e chute up for greater distance; tilt down for less distance. Loosen the hand knob on the side of the discharge chut e to adjust.
8 • If you have a gr ounded three -prong re ceptacle, procee d as follows. • Rotate choke lev er to FULL position. • Connect power cord t o switch box on dash p anel. Plug the other end of pow er cord into a t hre e-prong 120-vo lt, grounded, AC receptac le.
9 SECTION 5: MAKING ADJUSTMENTS Sh av e Pl at e • To check the adjust ment of the sh ave plate, place the uni t on a l e vel surface. See Figure 8. The wheels, shave pl ate and augers s hould all contact level surface. Note that if the shav e plate is adjuste d too high, snow may blow under the hous ing.
10 SECTION 6: MAINTAINING YOUR SNOW THROWER Replacing B elt • Remove th e belt cover by removing five hex screws. See F igure 12. Figu re 12 • Pull up on the idler pulley a nd slip the belt off the engine pul ley. See Figure 13. Figu re 13 • Push down on the idl er p ulley and slip the belt off the auge r pulley.
11 SECTION 8: TROUBLESHOOTING GUIDE NOTE: For repairs be yond the m inor adjustment s listed above, cont act your neares t authorized service representative or call 1-866-840 -6483 for the Customer Su pport Center. Refer to the engine m anual for more engine related informa tion.
12 SECTION 9: PARTS LIST FOR MODELS 521 AND 721 15 9 21 6 6 21 6 21 4 20 16 24 14 17 23 3 8 22 10 13 2 1 25 60 7 18 11 11 19 12 5 5 5 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 33 41 42 43 44 45 46 .
13 Ref. No . Part No. Part Descriptio n 1. 684-01 74 Up per Chut e Crank Ass emby 2. 684-01 77 Lower Chute Cra nk Assem bly 3. 684-01 78 Br acket Assembly: Mitt en Grip 4. 731-04 075 Shrou d (Mod el 521) 731-25 69 Sh roud (Mod el 721) 5. 710-08 95 T T Screw 1/4-1 5 x 0 .
14 Models 521 and 721 Ref. No. Part No. Descri ption 1. 629-0 071 Extensio n Cord 2. 710-0 157 Hex Bolt 5 /16-24 x 0.75 ” 3. 710-0 409 Hex Bolt 5 /16-24 x 1.75 ” 4. 710-0 502A TT Sems Screw 5. 710-0 751 Hex Screw 1/ 4-20 x 0. 620 ” 6. 710-1 003 B Screw #10-1 6 x 0.
15 Models 521 and 721 Ref. No. Part No . Descri ption 1. 710-0 487 Carria ge Screw 5/16- 18 x 2.0 ” 2. 710-1 270 Machine Sc rew 3. 712-0 324 Hex Lo ck Nut 1/ 4-20 4. 720-0 284 Hand Knob w/ Wing Nut 5. 720-0 295 Foam Grip 6. 725-0 157 Cable Ti e 7. 736-0 451 Saddle W asher 8.
MANUF A CTURER ’ S LIMITED W ARRANTY FOR: The l imited warrant y set forth bel ow is gi ven by Troy-Bi lt LL C with respect to new merchandi se p urchased and used i n the Unit ed Stat es, it s posse ssions and t errito ries.
An important point after buying a device Troy-Bilt 721 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Troy-Bilt 721 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Troy-Bilt 721 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Troy-Bilt 721 you will learn all the available features of the product, as well as information on its operation. The information that you get Troy-Bilt 721 will certainly help you make a decision on the purchase.
If you already are a holder of Troy-Bilt 721, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Troy-Bilt 721.
However, one of the most important roles played by the user manual is to help in solving problems with Troy-Bilt 721. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Troy-Bilt 721 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
