Walker MW 15 HP manual

OWNER’S MANUAL Safety , Assembly , Ope rating, and Maintenance I nstructions and ILLUSTRA TED P AR TS MANUAL Model MW - W alk -Behind (15 HP) Please Read and Save These Instr uctions Effective D ate: 1 1- 01-03 For Safety , Read All Safet y and Op eration P/N 900 1 Instruc tions Pr ior to O peratin g Mac hine Price $5.00 ™[...]

For eword Thank you. . . for purchasi ng a Wa l k e r b y Wa l k e r (Model M W). E very e ffort has bee n made to pro- vide y ou with the mos t reliab le prod uct on the mar ket, and we ar e sure you w ill be a mong our many satisfi ed customers . If for any reas on this product does not perform to y our expectations, ple ase contact an author ize[...]

T able of Conten ts Owner ’ s Manual General Informat ion ________ ______ __ 1 HIGHLIGHTED INFORMATION ________ _____ 1 GLOSSARY __________ __________ ______ __ 1 IDENTIFYING NUMBER LOCATIONS ______ __ 1 ENGINE SERIAL NU MBER LOCATION ______ 2 SERVICING OF DRIVETRAIN GEARBOX ____ 2 Specificat i on s ________ __________ _____ 3 ENGINE ________ ___[...]

T able of Conten ts CLEANING _____ ______ __________ ______ _ 36 Engine Air Cleaner System _________ ____ 36 Foam Prec leane r Eleme nt _________ ____ 36 Paper P recleaner Element ________ ____ 36 Engine Cooling System __ _______ ______ _ 36 Air Inta ke Scr een ___ ______ _______ ____ 36 Engin e Cooling Fins ______ _______ ____ 36 Grass Buildup in [...]

General Information 1 HIGHLIGHTED INFORMA TION W alker Manu facturi ng recom mends that any ser vice requir ing spec ial train ing or tools be perform ed by an author ized Walker Mower Deale r . There ar e sev- eral g eneral pra ctices to be aware of i n the are a of safety . Mo st ac cidents as sociated with t he oper- atio n or main tenanc e of a[...]

2 General Information Deck Serial Nu mber Loc ation ENGINE SERIAL NUMBE R LOCA TION The K awasaki eng ine mo del, type , and cod e num- bers a re lo cated o n the si de of th e engin e op posit e the rec oil starter h andle (o n the alum inum h ousin g). For the mower model c overed by this manual, an en- gine ma nual i s avail able to co ver the K[...]

Specifications 3 MODEL MW ENGINE Manufac turer/Mo del Kawasaki , FH43 0V , OHV , 2 Cyl. V -T win ( Air-C ooled) Displac ement 431CC (2 6.3 cu. in .) HP (@ 3600 RPM) 15 Max. RPM (No L oad) 4000 Gove r ned R PM 3600 Max. T o rque [ft-lb (N ⋅ m ) @ RPM] 23.6 (32 N•m) @ 24 00 Idle RPM 1500 S park Plug T yp e Champion ® RCJ8Y S park Plug Gap .030 i[...]

Specifications 4 MODEL MW TRANSMISSION (continued) T ran smission Flu id Factor y Servic e 20W50 Multi -V iscosi ty Moto r Oil T ransmiss ion Flui d Capacity 79 fl. oz . (2336 m l.) T ransmiss ion Cool ing Cooling Fan M ounted on Drive Pu lley Ground T ravel Speed Forw ard m .p. h. (km/ h) Revers e m.p.h. (km/h) 0-5 (0 -8) Infini tely V aria ble 0-[...]

Specifications 5 MODEL MW MOW ER D ECK Width of Cut 36-, 42-, 4 8-, 52- , or 56-in.( 91, 107, 1 22, 132, or 142 c m) Cutting He ight 1 to 4 in . (3 to 10 cm) Height Adjustm ent 7 Posi tions - 1/2 in. (1 cm) Inc rement Hi tch Pins Installed i n Mult i-Posi tion De ck S upport Blade Size 42 in . (107 cm ) 22 in . (56 cm ) 2 in. ( 5 cm) Ce nter Ov erl[...]

Component Identification 6 Front Vi ew and Right Side View NOT E: Control Iden tific atio n shown in Operating Instructions section. Engin e Cover Coun terwei ght S pring and Pro tective Cover Ti l t - U p Latc h Engin e Cover Latch Throttle/Cho ke Control & Cable Fuel T ank and Cap Park ing Brake Ha ndle Fuel Filter T ail Whee l Right Hand Dri[...]

Component Identification 7 Lef t H and Drive Whee l PTO C lut ch Lever S teeri ng C ont rol Rod (RH) S teeri ng C ont rol Rod (LH) T ail pipe Muffler Pisto l Grips Oper ator Prese nce Sw itch Cont rol T ransaxl e (LH ) Transm ission Neut ral Lock out Rods Rear View and Lef t Side View[...]

Component Identification 8 Fuel Pi ckup Line Oil Dips tick/ Oil F ill Oil Filt er Recoil S tarte r Handle T ransaxle Pressure Relief Va l v e [ ( L H ) Not Visibl e] FSC Elec tric Actuator Fuel Pump Park ing Brak e Linkage T r ansaxl e Pressur e Relief V alve (RH) Coun te rwei ght Damp ening S pring Batter y Counterwe ight Dampening S p ring T op V[...]

Safety Instructions 9 Pay particu lar atten tion to any infor mation l abele d DANGER , W ARNING , CAUTION , IMPORT ANT , and NOTE in this man ual. W h e n y o u s e e t h e S a f e t y A l e r t S y m b o l ( ) , read, unde rst and, and follow the instr uctions. Fail- ure to compl y with safety inst ruction s may result in perso nal in jury . The [...]

Safety Instructions 10 7. Do not w ear lo ose fittin g clothin g that coul d get caugh t in mo ving p arts. Always wear ad e- quate protective c lothing includi ng lon g pants. Wearing safety g lasses and safety shoe s is advisable and re quired by some local ordina nces and insu rance r egula tions. 8. Prolo nged expos ure to loud noise can ca use[...]

Safety Instructions 11 10. Dis engage th e blade dri ve when transp ortin g the ma chine a cross dr ives, s idewalk s, etc. Never rai se the mow er deck while blades are rot ating. 11 . The maximum recommended si de slope op- erating angle is 20 degre es or 33% grade. When op erati ng the ma chine on a slope , reduc e ground spee d and u se c autio[...]

Safety Instructions 12 9. Do not change the engi ne gove rnor se ttings or oversp eed the engine . The go vern or has been fact ory- s et fo r max im um- safe engi ne ope ratin g speed. 10. Us e genuine factory replacement p art s . Substi tute parts may resu lt in produ ct mal func- tion and p ossible injury to the opera tor and/or others . 11 . U[...]

Safety Instructions 13 On Body Adjacent to Parki ng Brak e Lev er (P/N 98 02) SAFETY , CONTROL, A ND INSTRUCTION DECALS Safet y , Control , an d Inst r ucti on D ecals are inst alled on the machi ne; if any are mis sing, ille gible , or damaged, a replace ment sh ould be ordered and inst all ed bef or e putti ng the ma chine i nt o oper at ion. The[...]

Asse mbly Instr uctions 14 SETUP INSTRUCTIONS W alk er Mo wers ar e shi pped p ar tiall y assem ble d. After unc rating t he tra ctor an d mower deck, i nitial setup is requ ired . NOTE: During the proc ess of unpacking , any da m- aged or missing parts sho uld be note d and repor ted to the d eliverin g carri er immed iately (put in wri ting withi[...]

Asse mbly Instr uctions 15 Mower De ck Assem bly Deck Ca ster Wheels I nstallati on 1. R emove th e bo lt, n ut, axle sp ac er t ube, and spacer wash ers from eac h deck c aster wh eel fork. NOTE: S pac er w ash ers are u sed onl y whe n the optional semi- pneumatic deck wheels (8.25 x 2.75) are in stalled. 2. Fit the axl e spacer tub e through the[...]

Asse mbly Instr uctions 16 PTO Shaft Guard Insta llation Position the s haft guard as show n and mount wit h two 1/4 -20 x 1/ 2 in. bolts. PTO Shaft Guard Installation Til t-U p Roll er Wh eel I nst all ati on NOTE: A 2-1/2" diameter tilt-u p roller wh eel (P/N 9 772) is requir ed for d ecks in stalled on the walk -behind . Mount th e two ( 2)[...]

Asse mbly Instr uctions 17 Mower Deck Installation (PTO S haf t Connection) Inst alling PT O Quick Coupler Coupler Ring “Locked” Position 5. Pull out c ounterw eight sp ring rece ptacle assi st handle and lift up on lock ing fin ger slig htly to unlock the rece ptacle as sembly . Lower this assembl y toward the deck and attach the coun- terweig[...]

Asse mbly Instr uctions 18 Deck Leve ling 1. Posi tion mow er on a smoo th, leve l surfac e. Set the cutti ng height to the highest position - 4 in. (102 mm) - for easy ac cess under the dec k to measur e blade h eight. Refer to ADJUSTING CUTTING HEIGHT in Operating Instructions . NOTE: A blo ck of wood cut 4 in. (102 mm) high is a convenient gauge[...]

Asse mbly Instr uctions 19 PREOPERA TING CHECKLIST Before operating the mower for the first time, and as a routi ne befo re dail y ope rations, it is impo rtant to make s ure the mower is proper ly pre pared and ready for opera tion. The follow ing is a l ist of item s to be che cked. (For a mower with freq uent o peration , some of the se items wi[...]

Asse mbly Instr uctions 20 IN SPEC T TW O (2) D RIVE BEL TS PTO Drive and Hydros tatic Ground Drive. CH ECK TIRE PRES SURE Deck Ca ster Wheel = 20 PSI ( 137 kPa) Drive = 15 PS I (103 kP a) Rear = 20 PS I (137 kP a) CHECK AND CLEAN GRA SS BUILDUP UNDERNEA TH MOWER DEC K The ti lt-up de ck c an be secur ed in the rais ed posi tion by unloc king the d[...]

Operatin g Instr uctions 21 CONTROL IDENTIFICA TION, LOCA TI ON, AND FUNCTION Operating Controls Engine Throttle/Choke The thr ottle/ choke c ontro l lever (red knob) i s lo cated to the left h and si de of the oper ator’s control panel. This cont rol is a dual- functioni ng contr ol (cho ke and throttle) . T he co ntrol is equipped with a de ten[...]

Operatin g Instr uctions 22 IMPORT ANT : Make sur e the choke is in the OFF positi on durin g normal engi ne operat ion; runn ing with the choke in the ON po sition CAN damage the engine. Forward Spe ed Control (FSC) The Forw ard S p eed Control (FS C) is a rocker switch located adjacent to the RH thumb po sitio n near the RH pi stol gr ip. This r [...]

Operatin g Instr uctions 23 Ignition Switch The ig nition sw itch has tw o positi ons: a RUN and an OFF positio n. The RUN posit io n sho uld be used when starti ng (using the reco il starter) an d running the engi ne. The OFF position s tops the e ngine. Ignition Switch ST ARTING THE ENGINE 1. Before attem pting to start the engine, mak e sure the[...]

Operatin g Instr uctions 24 1. Place both ha nds on their r espec tive g rips and using your RH thumb, tog gle the FSC switc h out of N EUTRAL- P ARK positio n to the desir ed for- ward sp eed. It is no t nece ssar y to ho ld the FSC switch in posit ion sin ce the electri c actua tor hold s the sele ct ed swit ch positi on (a nd forwa rd travel s p[...]

Operatin g Instr uctions 25 ENGAGING THE MOWER 1. Set the en gine th rottle at a bout 1/3 speed . Do not attem pt to engage the blade clut ch at high engine speeds. This will dra sticall y shor t- en driv e belt life . Use onl y modera te engin e speed wh en enga ging the b lade c lutch. 2. Pu ll t he bl ade clutc h le ver SLOWL Y up to en- gage th[...]

Operatin g Instr uctions 26 4. Slow th e eng ine to idle, p ut thr ottle in IDLE po- sition ; and turn the igniti on switc h OFF . 5. Engage the parki ng brak e. IMPORT ANT : The transaxles lock to prevent the mower f rom rolling free ly with the en gine stopped. However , if the mower is par ked on a slope, it is necessary to ENGA GE the p arking [...]

Operatin g Instr uctions 27 Fre ewhe el Po siti on Operating Position RECOMMENDA TIONS FOR MOWING IMPORT ANT : Oper ate th e en gin e at full speed when mowin g, to allow the engine to prod uce full horse power and to incr ease efficiency of the engin e coolin g sys t em. • Keep the m ower d eck and di scha rge chute clean. • Mow with shar p bl[...]

Operati ng In stru cti ons Mainten a nc e Instru ction s 28 • When o perating on a slope, reduc e speed and use caution to start, stop, and m aneuver . Avoid sharp turns or s udden chang es in dir ection . The maximum recommended side slope operating angle is 20 degrees or 33% g rade. Maximum Recommended Side Slope RECOMMENDA TIONS FOR TIL T -UP [...]

Mainten an ce Instruction s 29 CAUTION Maintenance procedures requir ing special training or tools should be performed by a trained technician. MAINTENANCE SCHEDULE CHART - RECOMMENDED SE R VICE INTER V ALS - M ODEL MW Service Item Daily 25 Hou rs 50 Hours 100 Hours 200 Hours Ref. Page Check Engine Crankcase Oil Level x 30 Check/Clean Engine Air In[...]

Mainten an ce Instruction s LUBRICATION 30 LUBRICA TION Proper lub ricati on is an important mainten ance pro- cedur e. It reduc es wear an d make s the ma chin e quie ter and ea sier to operate. Engine Oil Engine Break- In Oil No spe cial break -in oil i s requir ed. The eng ine is servic ed with 10W-30, Se rvice Clas s SG oi l from th e fact ory [...]

Mainten an ce Instruction s LUBRICATION 31 4. Before removi ng the o il filte r , clea n the are a around the filter to k eep dirt and debris out of the engi ne. 5. Remove the old o il filte r and wi pe off the filter mountin g surfac e on th e engin e. 6. Apply a thin coating of clean oil to th e rubb er gasket on the replace ment oil f ilter . IM[...]

Mainten an ce Instruction s LUBRICATION 32 2. Clean the area around the i ndividua l gearbox cover pla tes to prev ent contaminan ts from en- tering the gearcas e. 3. Remove t he scre ws securi ng th e cove r plat es on th e blade dr ive gear boxe s. 4. Check th e leve l of lub ricant i n the gea rboxes. If the lubr icant is low , add SAE E .P . (E[...]

Mainten an ce Instruction s LUBRICATION 33 T ractor PTO Gear box Lu brication Checki ng Gear box Oil Le vel The tracto r P TO gearbox is permane ntly lubricate d (oil fill ed) and sealed req uiring no schedule d lubric a- tion. Howev er , th e gearbox oil seal s shou ld be checke d ever y 25 ho urs for indic ation of oil leaks. If eviden ce of an o[...]

Mainten an ce Instruction s LUBRICATION 34 Ident Lubrication No. No. Location T ype Places Ident Lubrication No. No. Location T ype Places 1 Deck Caster Wheel Fork Pivot Grease 2 2 Deck Caster Wheel Bearing Grease 2 3 T ee Gearbox, Deck Oil * 1 4 Blade Drive Gearbox Oil * 2 5 PT O Shaf t Guard Hinge Oil 1 6 Universal Joint S haft & Grease ** 1 [...]

Mainten an ce Instruction s LUBRICATION 35 3 4 5 6 7 7 10 14 16 9 8 1 2 4 7 8 7 10 12 11 13 15 13 16 18 13 17 1 19 19 12 2 Chassis and Deck Lubrication Points[...]

Mainten an ce Instruction s CLEANING 36 CLEANING Engine Air Cleaner System There a re two compone nts in th e engine air cl eaner system: a foam prefilt er elem ent and a paper ele- ment. Each c ompone nt is che cked, c leaned and main tained on a d ifferent sch edule based on the fil- tering action re quire d. Each comp onent is servi ced as fo ll[...]

37 Mainten an ce Instruction s CHECKING/SERVICING CHECKING/SERVICING Battery Charging th e Batte ry Limit i nitia l char ging cu rrent to 1000mA . Cha rge u n- til batter y voltage (u nder charge ) reach es 14.40 to 14.7 0 vol t s at 68° F (20° C). Hol d at 14.4 0 to 14. 70 volt s un til curr ent dr op s t o appr oxim ately 50m A. Battery i s ful[...]

38 Mainten an ce Instruction s CHECK ING/SER VICING Mower Blade P rofile For Sha rpening 6. Check blade balance by pos itioning the blad e horizont ally on a blade balancer or use a nail or shaft thr ough the cente r hole . If either end of the blade r otates downw ard, grind ( remove ) metal on that e nd unti l the bl ade wi ll balan ce. Th e blad[...]

39 Mainten an ce Instruction s CHECK ING/SER VICING Blade Br ake Action Check the function of the c utter blade brake by en- gaging t he blad e clutch (PTO), operatin g the eng ine at full t hrottle, th en diseng aging the c lutch an d mea- surin g how quickl y the blades st op. W atch the rota- tion of the blade dr ive sha ft as a visual i ndicati[...]

40 Mainten an ce Instruction s REPLACING/REP AIRING REPLACING/RE P AIRI NG IMPORT ANT : AL W A Y S use genui ne f act ory re - placem ent parts. Subs titute parts CAN result in produc t malfunc tion and possible i njury to the oper- ator an d/or other s. Drive Belts There ar e two (2) individual belt s: • Groun d Drive Be lt • PTO Drive Belt (3[...]

Mainten an ce Instruction s REPLACING/REP AIRING 41 Blade Ove rload Sh ear Bolts NOTE: Shear bolts are not used on the D SD52 mowe r deck . The c utting bl ade is keyed to the blade hub by two (2) shear bolts (10-24 x 5/8 in. stainles s steel ma- chine s crews). These bo lts are designe d to shear and pro tect the bla de drive gearbox from dama ge [...]

Mainten an ce Instruction s REPLACING/REP AIRING 42 • An exces sive amo unt of the flat sect ion of the blade has been ground away (remove d) w hen th e blade is sharpened. Replace the blade when less than a 3/4 in . (19 mm) flat sect ion remains at th e blade ti p. • Exami ne ends of the blade ca refully , espe cially the inter sectio n where [...]

43 Mainten an ce Instruction s REPLACING/REP AIRING ADJUSTMENTS 7. Install the ne w gearbo x on the spl ine coupl ing of the dr ive sh af t. Establis h correc t timing of the blade dr ive gearboxe s by s etting flats on th e output s haft at 90 deg rees whe n connec ting the gearbo x(es) to the sp line coup ling. Make su re the timi ng is correc t [...]

Mainten an ce Instruction s ADJUSTMENTS 44 2. Use the ad justm ent nut on the PTO clutch actu- ator as sembly (refe r to PTO Clutch Link age Adjustment photo) t o set the ten sion appl ied by the PT O clutch lev er . The adjustment nut is initia lly set t o ach ieve an appr oximate meas ure- ment of 2-3/4 " between the jam nut and the knuck le[...]

Mainten an ce Instruction s ADJUSTMENTS 45 Control Arm Rod Adjustme nt - Step 2 1. For bo th co ntr ol ar m rod s, l oose n ja m nut on ball jo int end of contro l arm ro d and adj ust to ob- tain a 1- 1/4" meas urement between jam nuts (4-1/ 2" me asureme nt betwe en center s of b all joints). T ighten jam nuts. Control Arm Rod Adjustmen[...]

Mainten an ce Instruction s ADJUSTMENTS 46 2. If one wheel is mo ving too fas t, bring th e mower back into NEUTRAL ( using th e FSC sw itch) and sligh tly tight en the adjustme nt bolt on the s peed contro l actuator on the sid e that is moving fas ter . T rack ing Adjust ment Contro l Han dle (Pi stol Gr ip) Ad justm ent - Step 5 1. Loosen j am n[...]

Mainten an ce Instruction s ADJUSTMENTS 47 Carburetor Carbureto r adjus tments are requir ed to c ompensat e for di fferences in al titude, temperatu re, a nd fuel. Once the carburet or has been se t, no further ad just- ments shou ld be req uired . Howev er , if the engin e exhi bits any of the fo llowin g sympto ms, the c arbure - tor adju stm en[...]

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58 8VHRQOJHQXLQH :DONHU UHSODFHPHQWSDUWV (IIHFWLYH'DWH  (/(&75,&$/$66(0%/ < (OHFWULFDO$VVHPEO   &DEOH7 LH[    :LUH+DUQHVV    )6&7KXPE*XDUG   [...]

59 (IIHFWLYH'DWH  8VHRQOJHQXLQH :DONHU UHSODFHPHQWSDUWV (/(&75,&$/$66(0%/ < A I B C D E F G H END VIEWS ARE SHOWN FROM BACK OF PLUG DET AIL E BLK/WHT GRA DET AIL F GRA BLK DET AIL A DET AIL B DET AIL G DET AIL H GRA BLK DET AIL I GRA BLK DET AIL D BLK/WHT BLK BLU BLK BRN BRN RED/YE[...]

B A M S1 S2 G 10 AMP CIRCUIT BREAKER BA TTER Y W ALKER MODEL MW Beginning S/N 2004-68081 S1 = ST ART CIRCUIT S2 = ST ART/ACCESSOR Y CIRCUIT M = MAGNETO GROUND CIRCUIT B = BA TTER Y CIRCUIT A = ACCESSOR Y CIRCUIT G = GROUND CIRCUIT FSC ACTUA TOR FSC TOGGLE SWITCH ENGINE GROUND RECTIFIER/REGULA TOR MAGNETO OIL PRESSURE SWITCH WHT PUR BLK RED BRN BLU [...]

61 (IIHFWLYH'DWH  8VHRQOJHQXLQH :DONHU UHSODFHPHQWSDUWV 0$,17(1$1&($1'6(59,&(5(&25'6+((7 BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB BBBBB BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB[...]

62 Operator ’ s Notes[...]

63 LIMITED W AR RANTY FOR WA L K E R COMMERCIAL RIDER MOWER 1. WHA T THIS W ARRANTY COVERS, AND FOR HOW LONG: W alker Manufacturing company will, at it s option, repair or re place, without charge, any part covered by this warranty which is found to be defective in material and/or workmanship within o ne (1) year af ter date of sale to the original[...]

W ALKER MFG . CO. • 592 5 E. HARMONY ROAD, FORT COLLINS, C O 80528 • (970) 22 1-5614 FORM NO. 1 10103 PRINTED IN USA www .walkermowe rs.com © 2004 W ALKER MFG . CO[...]