Yard-Man 31AE993I401 manuale d’uso

33” Snow Thrower Model 31AE993I401 OPERA T OR’S MANU AL PRINTED IN U.S .A. FORM NO . 770-102 78B.fm (5/2001) IMPORT ANT : READ SAFETY RULES AND INSTR UCTIONS CAREFULL Y MTD PRO DUCTS INC. P .O . BO X 368022 CLEVELAND , OHIO 44136-9722 Warning: This unit is equipped with an internal combustion engine and should not be used on or ne ar any unimpr[...]

2 TABLE OF CONTENTS Content Page Important Safe O peration Practi ces .... .................... ............ ............. .................. 3 Assemb ling Your Sno w Thrower ............... ............. ............ .................... ........... 5 Knowing Your S now Thro wer .................... ............. ............ .................... [...]

3 SECTION 1: IMPORTANT SAFE OPERATION PRACTICES This symb ol point s out impor tant safety i nstruct ions whic h, if not followe d, coul d endange r the persona l safety and/ or proper ty of your self and ot hers. Rea d and follow al l instructi ons in th is manual be fore attempting to operate t his machine. Failure to comply wi th these inst ruct[...]

4 5. Never run an eng ine indoors or in a poorly ventil ated area. Engine ex haust contains carbon mon oxide, an odorless and dea dly gas . 6. Do not operate m achine wh ile under the influ ence of alcohol or dru gs. 7. Muffler a nd engine become hot and can cause a burn . Do not touc h. 8. Exercise extreme ca ution w hen operat ing on or crossin g[...]

5 SECTION 2: ASSEMBLING YOUR SNOW THROWER NOTE: Any reference in this m anual to th e left or right side of the s now throwe r is obse rved from the operator ’s position . Unpacking • Remove s taples from the top, sides, an d ends of the shi pping c rate. • Set panel s aside to avoid tir e punctur es or perso nal injury . • Remove an d disc[...]

6 shift rod. T ap the conn ector un til it locks over the lower shift r od. See Figur e 2. NOTE: If the conn ector is no t proper ly assemb led, the shift rod will pivot and you will not be able to change speed s or chang e directi ons. • Remove th e hairpi n clip fro m the upper chute cr ank and sl ide the upper chute crank through the upper chu[...]

7 • Loosen th e jam nut and thread the cable in (for le ss slack ) or out (for mor e slack ) as nece ssary. See Figure 7. • Rech eck adjust ment; read just as nec essary an d tighte n the jam nut. Figure 7 Skid Shoes The spac e between the shave pla te and the gro und can be adjuste d by repos itioning th e skid sho es. For close snow remo val,[...]

8 Shif t Lever The shif t lever is loc ated in the cen ter of the h andle panel and is used to deter mine grou nd speed and directi on of trave l. It can be move d into any of ei ght position s. See Figur e 9. IMPORT ANT : Always r elease tract ion the contr ol before chang ing spe eds. Forward Your s now throw er ha s six forwa rd (F) s peeds. Pos[...]

9 SECTION 4: OPERATING YOUR SNOW THROWER Before Starting WARN ING: Read, understand, and follow all instr uctions and wa rnings on the machine and in this manual be fore operating. Gas And Oil Fill-up Service the engine with ga soline and oil as instruc ted in the sep arate engi ne manua l packed with your snow thrower. Read i nstructio ns caref ul[...]

10 T o Stop Engine • Run engine for a few minutes before sto pping to help dry off any moisture on the engine. • To help prevent poss ible freeze- up of starte r, proceed as follo ws. Electric Starter: • Conne ct power cord to swi tch b ox on engine , then to 120 volt AC recept acle. Wit h the engine ru nning, push starter button and sp in th[...]

11 Fig ure 10 • Retighten the jam nut to secure the cab le when corre ct adjustm ent is reached . • Reasse mble the frame cove r. NOTE: If yo u placed pl astic film under the gas c ap, be certain to remove it before op erating the sno w thrower. Drive Whee ls The wheel s may be adju sted for two di fferent meth ods of operati on. The adju stmen[...]

12 SECTION 6: MAINTAINING YOUR SNOW THROWER WARN ING: Before lubricating, repair- ing, or inspecting, disengage all clutch levers and stop engine. Wa it until all mov- ing parts have come to a complete stop. Disconne ct the spar k plug w ire and ground it against the engine to prevent unintended starting. General Recommendations • Always observe [...]

13 IMPORT ANT : Do not overfill the gear case, si nce damage to the seals coul d result. Be sure the v ent plug is free of grea se in order to relieve pr essure . Auger Beari ngs an d Sha ft Every sea son lubri cate the auge r bearin gs and the bearing s on the side of the frame with l ight oil. See to Figure 12. Use oil or spr ay lubric ant into t[...]

14 Fig ure 15 • Remove the six carr iage bolts (thr ee per side) , bellevi lle washe rs and hex nu ts which atta ch slide sh oe s to the snow throwe r on two sides. See Figure 8. • Reasse mble new slide s hoes with the hardware removed earlier (cupped sid e of belle ville washer again st the slide shoes). M ake certa in the sl ide shoes ar e ad[...]

15 • Pull the brake bracket as sembly towards the cabl e guide rolle r and unhook the auger cab le “ Z ” fitting. • Remove the upper bolts and lock washe rs which attach th e aug er hous ing as sembly to the frame assembl y using a 9/1 6 ” wrench. Se e Figure 16. • Separa te the auger ho using fro m the frame assembl y by tilti ng the h[...]

16 Fig ure 20 • Reasse mble the new fr iction whee l rubber to the frictio n wheel ass embly, ti ghtening the six screw s in rotation and with equal for ce. It is im portant to assembl e the rubber on the frict ion wheel symmetr ically for proper fu nctionin g. • Insert th e pin from the s hift arm as sembly into th e frictio n wheel ass embly [...]

17 SECTION 9: TROUBLESHOOTING NOTE: Fo r repair s bey ond th e minor adjustme nts lis ted a bove, c ontact t he lo cal dea ler. Proble m Caus e Rem edy Engine fai ls to sta rt. 1. Fuel tan k empty , or stale fuel. 2. Blocked fuel lin e. 3. Choke not in ON positio n 4. Faulty sp ark plug. 5. Safety k ey not in i gnition s witch on e ngine. 6. Spark [...]

18 24 29 29 30 20 39 1 3 2 4 5 5 5 7 6 8 25 25 40 42 8 18 31 8 25 43 27 13 17 13 9 14 25 26 34 34 26 32 14 14 21 21 16 10 23 12 13 35 11 37 25 13 22 19 13 33 25 14 41 28 15 36 38 44 45 46 47 14 25 49 52 50 53 54 55 56 51 48 Model 31AE993I401[...]

19 Model 31AE993I401 Ref. No. P ar t No. P ar t Description 1. 05244A Beari ng Housing 2. 618-0281A Brack et Assembl y: Auger Bre ak 3. 684-009 0A Impell er Assembly : 16 ” 4. 710-037 1 Hex Lock Bolt 5/16-18 x .8 75 ” 5. 710-045 1 Carriage Bolt 5/1 6-18 x .750 ” 6. 710-045 9A Hex Screw, Special 3/8 -24 x 1.5 ” 7. 710-052 8 Hex Scre w 5/16-1[...]

20 Model 31AE993I401 18 12 76 17 8 16 9 11 45 49 66 4 35 35 36 45 45 45 10 18 18 24 73 55 32 42 5 54 39 23 34 6 67 14 51 27 75 71 64 58 22 21 55 29 13 46 60 55 56 52 37 22 56 2 46 46 33 13 29 46 40 57 38 20 20 7 68 59 43 31 70 44 28 18 18 19 47 30 43 31 31 61 48 15 55 62 27 50 26 51 66 42 3 63 60 33 55 47 30 65 1 16 56 47 19 31 15 48 61 26 50 62 55[...]

21 Model 31AE993I401 Ref. No. P ar t No. P ar t Description 1. 05523 Support Bracket : Pivot 2. 618-027 8 Bush Assemb ly 3. 618-0279 Dogg Ass embly LH 4. 618-0280 Dogg Ass embly RH 5. 618-0282B Shift As sembly 6. 618-0296 Wheel Bearing Ass embly 7. 684-0115 Support Bracket Assembly 8. 684-0116 Shift Arm As sembly 9. 684-0117 Shift Rod Assembl y 10.[...]

22 Model 31AE993I401 1 1 2 3 4 5 4 5 19 19 19 19 6 6 7 7 8 9 9 10 21 13 29 11 22 24 31 17 27 23 15 26 21 15 14 25 16 18 22 11 20 15 12 28 30 15 23 13 21 33 32 32 A A A A 33 34 34 35 35 36 37 38 39 40 41 42 43 44[...]

23 Model 31AE993I401 Ref . No. P ar t No. P art Descript ion 1. 646-0012 Cable Assem bly: Aug er/Drive 2. 684-0053B Chute Cr ank Assembly 3. 705-5266 Chute Crank Brack et 4. 710-3119 Hex Screw 3/8-16 x . 75 ” 5. 710-1878 Hex Screw3 /8-16 x 1 .75 ” 6. 710-0458 Carriage Bolt 5/16-18 x 1.75 ” 7. 710-0572 Carriage Bolt 5/16-18 x 2.5 ” 8. 710-08[...]

24 Model 31AE993I401 Ref. No. Part No . Des crip tio n 1. 07 386 Wa sher 2. 684-0123 A Belt Cov e r Brac k et Assem b l y 3. 710-0191 He x Scre w 3/8 -24 x 1.25 ” 4. 710-0237 Hex Scre w 5/16-24 x .625 ” 5. 710-0502 A TT Sems Screw 6. 710-0607 TT Scre w 5/16- 18 x 0 .5 ” 7. 710-1245 He x Loc k Scre w 5 /16-24 x .875 ” 8. 712-0116 Jam Nut 9. [...]

25 Model 31AE993I401 Ref. No. P art No. Descrip tion 1. 710-0276 Carriag e Screw 2. 710-0458 Carriag e Bolt 5/1 6-18 x 1.7 5 ” 3. 710-0805 Hex Bo lt 5/16-18 x 1.5 ” 4. 710-0896 Hex AB Screw 1/4-14 x .625 ” 5. 710-3015 Hex Screw 1/4- 20 x .75 ” 6. 712-0 429 He x Lock Nu t 7. 712-3 027 He x Flange Lock Nut 8. 731-0846 C Up per Chute 9. 731-08[...]

26 Notes[...]

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28 MANUF A C TURER ’ S LIMITED W ARRANTY FOR: The l imit ed warr anty se t for th below is given by MTD PRODUCTS INC ( “ MTD ” ) with respe ct to ne w mercha ndise purchase d and used in the Uni ted Stat es, i ts pos sessio ns and ter ritories. MTD war rants this prod uct agains t def ects in mate rial and workman ship f or a period of two (2[...]