Bolens 721 manuale d’uso

Single Stage Snow Thrower Models 521 & 721 PRINTED IN U .S.A. Oper ator’ s Man ual FORM NO . 769-00309A.fm (7/2003) IMPOR T ANT : Read saf ety rules and instr uctions carefully bef ore operating equipment. TRO Y-BIL T LLC. P .O . BO X 3611 31 CLEVELAND , OHIO 44136-0019 Warning: This unit is equipped with an internal co mbustion engine and sh[...]

2 TABLE OF CONTENTS Content Page Important Safe Op eration Practic es .............. ............. ................ ............. ................ .......... 3 Assembling Your Snow Thrower ................ ............. ................ ............. ................ ............. 5 Know Your Sn ow Thrower ................ ............. ...........[...]

3 SECTION 1: IMPORTANT SAFE OPERATION PRACTICES DANGER: This machine was built to be operated according to the rules for safe operation in this manual. As with any type of power equipment, carelessness or error on the part of the operator can result in serious injury. This machine is capable of amputating hands and feet and throwing objects. Failur[...]

4 4. Never operate with a missing or damaged discharge chute. Keep all safety de vices in place and workin g. 5. Never run an engine indoors or in a poorly ventilated area. Engine exhaust contains carbon monoxide, an odorless and deadly gas. 6. Do not ope rate machine while u nder the infl uence of alcohol or drugs. 7. Muffler and engine become hot[...]

5 SECTION 2: ASSEMBLING YOUR SNOW THROWER Unpacking From Carton • Cut along corners of the carto n and lay it down flat. Remove packing material. • Remove any loose parts included with unit (i.e., operator’s manu al, etc.). • Roll unit out of carton. Check carton th oroughly for any remaining loo se part. Items Required F or Assembly 1. Eng[...]

6 SECTION 3: KNOW YOUR SNOW THROWER Figure 3 Auger Control Handle Located on the upper handle, the auger control hand le is used to engage and diseng age the auger. The snow thrower is designed to propel by the rotation of the auger. Pull th e auger control handle back against the upper handle to engage the auger; release to disengage . Discharge C[...]

7 SECTION 4: OPERATING YOUR SNOW THROWER Before Starting • The spark plug wire was disconnected for safety . Attach spark plu g wire to spark plug before starting. Gas and Oil Fill-Up • Check oil and gasoline level and ad d if necessary. Follow related instructions in the separate en gine manual packed with your snow thr ower. T o Start Engine [...]

8 T o Stop Engine • To stop e ngine, turn ignit ion key counter-clockwise. Disconnect the spark plug wire fr om the spark plug to prevent accidental st arting while equipment is unattended . To help pr event possible f reeze-up of starter, proceed as follows: • Run engine for a few minutes before stopping to help dry off any moisture on the eng[...]

9 • To adjust, tip th e snow thro wer back so that it rests on the handle. Loosen the four lock nuts and bolts which secure the shave plate to the housin g. See Figure 7. Move the shave plate to desired position and retighten th e nuts and bolts securely. Figure 7 Control Cable As a result of both the control cable and the drive belt stretching d[...]

10 • Install new shave plate, making sure the heads of the carriage bolts are on the inside of the housing. • Adjust the shave plate accor ding to instructions on page 8. Tighte n securely. Engine • Refer to t he separate engine m anual for all engin e maintenance proce dures. • Check engine a nd snow thrower fr equently for loose hardware,[...]

11 SECTION 8: TROUBLESHOOTING GUIDE NOTE: For repairs beyond the mino r adjustments listed above, contact your ne arest authorized service representative or call 1-866-840-6 483 for the Customer Supp ort Center. Refer to th e engine manual for more engine rela ted inform ation. Pr oblem Cause Remedy Engine fails to start 1. Fuel tank empty, or stal[...]

12 10 SECTION 9: PARTS LIST FOR MODELS 521 & 721 41 39 44 35 35 44 35 44 33 43 42 18 3 14 21 8 20 10 28 22 4 1 13 11 21 2 16 7 29 12 17 25 22 28 19 15 30 6 9 9 13 31 23 27 CABLE T O BE ABO VE WHEEL AXEL 32 38 45 40 12 12 17 17 46 37 36 24 49 26 52 50 48 47 51 34 3 53 14[...]

13 Models 521 & 721 NOTE: For painted parts , please refer to the list of color codes below. Please add th e applicable color code, wherever needed, to the part number to order a replacement part. For instance, if a part numbered 700 - xxxx is painted powder black, the part number to order would be 700-xxxx-0637. Powder Black: 0637 Red: 0638 RE[...]

14 Models 521 and 721 REF . NO . PA R T NO . DESCRIPTION 1 710-04071 Carriage Screw , 5/16-18 x 1.0 2 710-0451 Carriage Bo lt, 5/16-18 x.075 GR 1 3 712-3068 He x Patch I-Nut 5/16-18‘ 4 720-0284 Handle Knob Assembly 5/16-18 5 731-04127 Lower Chute 5” Dia 6 731-04353 Ring-Lower Chute 7 731-04373 Chute, Adapter 5” Dia 8 731-04388 Handle-Chute 5?[...]

15 Models 521 and 721 REF . NO . PA R T NO . DESCRIPTION 1 629-0071 Extension Cord 2 710-0157 He x Screw , 5/16-24 x .75 3 710-0409 He x Screw , 5/16-24 x 1.75 4 710-0654A Self T apping Screw , 3/8-16 x 1.00 5 710-0751 He x Screw , 1/4-20 x .62 6 710-1003 Screw , #10-16 x .625 7 712-0324 He x Nut, 1/4-20 Nylon 8 719-0581 Spacer , Engine 4 Cycle 9 7[...]

MANUF A CTURER’S LIMITED W ARRANTY FOR: The limited warranty set forth be low is given by Troy-Bilt LLC with respect to new merchandise purch ased and used in the United States, its possessions an d territories. “Troy-Bilt” warrants this produc t against defects in material and workmanship for a pe riod of two (2) years commencing on the date[...]