MTD 18HP manual

MMZ Jr . Hydr ostatic Zer o-T urn Riding Mo wer OPERATOR’S AND SERVICE MANUAL MODEL 18HP 48" Stamped Deck[...]

2 T ABLE OF CONTENTS F ore word . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Gener al Saf ety Operatio ns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 A.Dange r . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

3 FOR W ARD The 18 HP MMZ Jr . Hydrostatic Ze ro-T ur n Commercial Ridin g Mo wer pro vides supe rb maneu- v erab ility . The mach ine incorporate s many saf ety fea tures that shoul d be studied b y all oper a- tors bef ore use . The list o f saf ety precau tions should rece ive par ticular a tte ntio n. This manual p resents a ll of the op eratin[...]

4 GENERAL SAFETY OPERA TIONS A. D ANGER 1. Do not operate machine in confined areas where exhaust gases can ac cumulate. 2. D o no t ope rat e ma chin e wit hou t mo w er chut e deflector in pl ace and operatio nal. 3. Do not carr y passe ngers. B. W ARNING 1. Do not operate mach ines und er t he influe nce of al cohol or dr ugs. 2. Do not operate [...]

5 11. When looking f or oil leaks, nev er run your hand ov er h ydraulic ho ses, lines or fitt ing s. Ne ver tighten or adjust h ydraulic hoses, lines or fi ttings while the system is under pres sure. If high-pr essure oil p enetrates the sk in, the oil must be remov ed within a f ew hours by a doc- tor f amiliar with this fo r m of injur y or seri[...]

6 SAFETY DECALS AND LABELS WARNING SHIELD MISSING DO NOT OPERATE Part Number : 0003 063 5 Do not put hands or feet under or into mower when engine is running. ROTATING BLADE DANGER Part Nu mber: 000 30633 Part Nu mber: 01 003859 Part Nu mber: 01 003858 Part Numb er: 010 03449 KEEP HANDS and FEET AWA Y DANGER T O REDUCE THE RISK O F INJURY , DO NO T[...]

7 SPECIFICA TIONS Engine: 18 HP B r iggs and S tratton V anguard Ty p e : V e r tic al a ir co oled Air Cleaner: Dual El ement Lube System: Pressu r ized wit h oi l fi lt er Starter: 12-v olt e l ectric T raction Drive: Engi ne to t wo v a r iable-spe ed h ydraulic pu mp/m oto r BDR uni ts to gearbo x on each d riv e whe el Hydraulic T ank: 10 quar[...]

8 OPERA TING INSTR UCTIONS A.General 1. When Mowing: a. K eep adults, chil dren, and pets aw a y from the area to be mowed. b . Wh en operat ing this mower , in the f orward direction , do not allow the steer ing lev ers to retur n to Neutral on thei r own. Alwa ys maintain a fir m gr ip on the lev ers, operate them smoo thly and av oid any sud den[...]

9 c. A v oid tur n ing when go ing downhi ll, tractio n is at a mi nimum going downhill. d. Do not operate with disc harge s ide of the mower to w ard s treets, buildings, play- grounds, park ing lots, othe r machines, ani - mals, and other p eople. e. A vo id oper ation or use e xtre me care if t he traction surface is wet, unstable, or slip- per [...]

10 4. Elect ric Bla de Clutch Switch: (See F igure 1.) Loc ated o n th e r ight side o f the mower beside th e ignition switch. This is an “on/off ” push pull switch that controls the elect ric blade clutch whic h supplie s power to the c ut- ting blades through t he PT O . The s witch must be cut off to star t the en gine and shou ld be off f [...]

11 C.Initial Adjustments 1. Check the fluid levels and tires: Note: Th ese che cks sho uld be made dail y , bef ore starting the engine. a. Fue l: Us ing a g ood grade of unle aded, regular g asoli ne (for a gaso line engine ), fill the fuel tan k. When t he fuel reaches on e inch fro m the top of the tank , stop . DO NO T O VERFILL . Space must be[...]

12 clockwise a fe w tur ns. Adjus t both fron t and rear De ck links as ne cessar y . Retighten nuts. f . Rai se the mowing d eck to the transp or t position usin g the transp or t lev er . g. Use the transpo r t le ver to lower the m ow- ing deck to the cutting p osition a nd repea t step “b.” abov e to make sure t hat the desired cu tting hei[...]

13 ning. Si t down and the engine s hould run . T u r n off th e PT O by pushing the control s w itch down. h. T o dri v e i n the FORW ARD direction : 1. Set the en gine spe ed to 20 00 to 2500 r pm (refer to tach ometer on ri ght contr ol panel). This must be increased to full speed ( 3525-367 5 r pm) a fter beco ming f a miliar with the mac hine[...]

14 d. T ur n the el ectr ic blade clutch switch “Off” . e. Push the throttle c ontrol to a posit ion a third of the wa y b etween slow and fast. f . Ins er t the key in the ignit ion and star t s w itch and t ur n the s witc h to “On ”. g. Gasoline Engin e: If the eng ine is cold, push the c hoke to the on p osition. h. T urn the ign ition [...]

15 remo ving the lift linka g e fr om the dec k will cause it t o snap bac k. d. Detach the mower drive belt. e. Remov e s ix cotte r pins (S ee Fig. 6) (4) from the d eck and (2) from t he fron t of the mower . Rem ov e th e cotter pin s on the left and r ight rea r side of the cutte r deck (2); remov e the cotter pins on the lef t and r ight fron[...]

16 e. Pull the te nsion er pulley a wa y from the be lt and rem ov e the P T O belt then rem ov e th e blade drive belt. f . Re verse the proc ess to install the be lt. Note: When re placing belts do not o ver- tighten. Adju st the idler pulle y so that a ten- pound pull with a spring scale betwee n tw o pulle ys deflects the belt about 1/2". [...]

17 drain oil fr om both lef t and r ight axles. Replace and retig hten nuts. j. Coat new filter sea l with oil bef ore instal la- tion. Insta ll new h ydraulic oil fi lter filled wi th new oil. k. Add pr oper am ount of hydraulic oil t o res- er voir . l. Run and purge gearbox es. Check oil lev el. m. Add proper am ount of hydraulic oil t o res- er[...]

18 other elec tr ical component s. This is a stan- dard plug -in type aut omotive fuse rated at 7.5 amp . 7. Safety S wi tche s: There are f ive safety s witches in the electr ical circuit which control the eng ine. They are (1) the blade clut ch s witc h, (2) the par king brake s witch, (3) the left and (4) the r ight steer ing lev er switches and[...]

19 the wiri ng har n es s and the co nnec tions to the sea t switch, the blade clutch s wi tch a nd the ele ctr ic blade clut ch. Then check out the sea t switch, the blade clutch s wi tch a nd finally the el ectr ic blade clut ch. D. T i r e s The two front wheels are ca ster wheels tha t are free to swiv el to acco mmodate t he dire ction of the [...]

20 Note: If y ou wish t o move th e mow er by pushin g, y ou must r elease the dynami c brak- ing. Locate the le ver s at the rear of the mo wer . Pull both le vers out a nd lock in p osition. After pushing the mower to the d esired location, return bot h leve rs to the opera ting position (See photo b elow) . When the mow e r is par ked with the e[...]

21 ca vit at ion to de v e lop whic h can destro y the pumps in a shor t time. Contaminants or foreign matter in the oil will also damage the pumps . T o p re v ent th is, use a filte r that captur es par ti cles as small as 30 microns or 30 millionths of a meter in diame- ter . Y ou can he lp in the batt le agains t dir t by being very careful whe[...]

22 i. Inspect t he hy d raulic hos es, line s and fit- tings. Replac e as neces sar y . j. J ack the mower up and store it on b locks to take the weight off of the tires. 2. T o Put the Mower Back in Servi ce: a. Check the batter y . Ch arge if n ecessar y . b . Gaso line Engine O nly: Remove the spark plugs and wipe them off. Using the s tar ter ,[...]

23 . OIL CHAR T Apply a fe w drops of SAE 20W -50 en gine oil or use a sp ra y lubr icant . Apply the oil to bo t h sides of pivot points. Wipe o ff any e xce ss. Sta r t eng ine and operate mow e r brie fly t o ins ure that oil spre ads e venly . Number of Oil P oints Description DA I L Y 4 4 2 2 2 2 1 2 WEEKL Y 1 2 2 2 1 1 1 4 2 2 Dec k Suspensio[...]

24 P erfo rmance Adjustm ents A. High Speed T racking Adjustment If mower tracks to one s ide wit h both lap b ars in fully f orward posit ion: 1. Check air pressure in all f our t ires: a. Pressur e should be withi n speci fied ranges and balan ced s ide-to- side. b . Rea r tires 8- 10 psi. re comme nded (20 p si MAX.) c. F ron t tires 20-25 ps i.[...]

25 g. V erif y proper th rottle ad justment by check- ing RPM r eadings as out lined above . C. Dec k Corner Ball Wheel Roller Settings 1. Matching the s et height s of the ball rol lers on the four cor ners of the mow er deck to the desired cut height will prev ent edge scalping and minimize any side-to- side variance in cut height . 2. There are [...]

26 1. P ark the mow er on a flat pa ve d surf ace, engage the parking br ak e, shut off the e ngine , rem ov e the k e y fro m the igniti on s witch, disconn ect the spark plug wires and usi ng the tra nsport lev er , lo we r the m owi ng dec k into the 4" heig ht of cut position. (The 4" he ight of cut position is recom- mended in order [...]

27 WIRING DIA GRAM[...]

EQUIPMENT TWO-YEAR LIMITED WARRANT Y This w arranty is spec ific to t he produ ct manua l it is a ttached to. For a comp lete list of produc ts and warra nties cont a ct your MTD Pro dealer. Proper maintenance of your MTD Pro equipment is the owner’s responsibility. Follow the instr uctions in your ow ner’s ma nual fo r correc t lubric ants an [...]