Walker MC (18 HP) manual

OWNER’S MANUAL Safety , Assembly , Ope rating, and Maintenance I nstructions Model MC (18 HP) (Cov er s Seria l Number s 03-6 1 06 1 and on ) Please Read and Save These Instr uctions Effective Da te: 04-15-0 3 For Safety , Read All Safet y and Op eration P/N 600 0-8 Instruc tions Pr ior to O peratin g Mac hine Price $5.00 ™[...]

For eword Thank you. . . for purchasi ng a W alker mower . Every effort has been ma de to provi de you with th e most reliabl e mower on the market, and we are sure y ou will be among our many satis fied cu stom- ers. If for any rea son this produ ct does not perform to your expectation s, please c ontact us at (970) 221-5614 . Every c ustomer is i[...]

T able of Conten ts General Informat ion ________ ______ __ 1 HIGHLIGHTED INFORMATION ________ _____ 1 GLOSSARY __________ __________ ______ __ 1 IDENTIFYING NUMBER LOCATIONS ______ __ 1 ENGINE SERIAL NU MBER LOCATION ______ 2 SERVICING OF E NGINE AND DRIVETRAIN COMPONENTS __ ______ __________ ______ __ 2 Specificati ons ______ __________ ______ __[...]

T able of Conten ts Maintenan ce Instr uctions _________ _ 41 MAINTENACE SCHEDULE CHART ____ ____ 41 IMPORTANT TIPS FOR CARE OF THE KOHLER ENGINE ____ _______ ____ 42 Fuel System ________ __________ ______ _ 42 Starting/Stopping ____ ______ _______ ____ 42 Cooling System ________ _______ ______ _ 42 Air Cleaner System ________ _______ ____ 42 Oil _[...]

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 . Most ac cidents associa ted with the oper a- tion or mainte nance o f a W[...]

General Information 2 T ract or Serial N umber Locati on Mower Dec k Serial Nu mber Locat ion ENGINE SERIAL NUMBE R LOCA TION Refer to the engi ne manual that ac companie s this manual for the location of the engine ser ial numbe r . For the mower model covered by this manual , an engine ma nual is a vailable cov ering the K ohler Command CH18 gas [...]

Specifications 3 MODEL MC ENGINE Manuf acturer/Mo del Kohler Com mand CH 18, 2 Cy l., Gaso line (Air-Coo led) Displac ement 38.0 cu. in. ( 624 cc) HP (@ 3600 RPM) 18.0 Max. RPM (No L oad) 3750 Gove r ned R PM 3600 Max. T orque [ft-lb (N ⋅ m ) @ RPM] 30 (41) @ 2500 Idle RPM 1200 ± 75 S park Plug T yp e Champion ® RC12YC S park Plug Gap .030 in. [...]

Specifications 4 MODEL MC TRANSMISSION (continued) T ran smission Flu id Factory Servi ce Mobil 1 Synth etic M otor Oi l (15W-50) Altern ate T ransm ission Fluid SAE 30 W S traight Visco sity Mot or Oil T ransmiss ion Flui d Capacity 1 qt (1 l iter) T ransmiss ion Cool ing Cooling Fan M ounted on Drive Pu lley Ground T ravel Speed Forw ard m .p. h.[...]

Specifications 5 MODEL MC DIMENSIONS (continued) Height SD Model 37-1/2 i n. (95 cm) GHS Mo del 44-1/ 2 in . (1 12 cm) Wheel B ase (Tractor) 42-1/4 i n. (107 c m) T read Width (T ractor) S tandard T ires 28-1/4 i n. (72 cm) Optiona l T ires 29-3/4 i n. (76 c m) MOW ER D ECK Width of Cut S D/GHS 36 or 42 in. ( 91 or 107 cm) Cutting He ight 1 to 4 in[...]

Specifications 6 MODEL MC GHS SYSTEM (Optional) Blower 4 x 10 x 1/4 in . (10 x 2 5 x 1 c m) Th ree-Blade Paddl e Whee l (Driven by Mo wer E ngine) Blower Brake Band Br ake (Works in Combin ation w ith PTO Clutch, S tops Blower within Five (5) Second s of PTO Disengage ment) Max . Blo wer S peed 3600 RPM Grass C atcher Capacity 63 Gal lons (23 8 lit[...]

Component Identification 7 Front Vi ew and Right Side View NOT E: Control I dentific ation shown in Operating Instructions section. Catcher Door Safety Latch Tur b i n e Precle aner Grass Hand ling Sy ste m 9.5 Bu shel Catc her Anti-S cuff Roller Catcher Lift / Dump Handl e T ransm is si on Contro l Rod Adjustme nt Nut (RH) Deck Lift Handle (Cuttin[...]

Component Identification 8 Oil Filter Oil Drain Plug Ta i l p i p e Muffler Left Hand Drive Wh eel Catcher Li ft / Dump Handl e Catcher Door Gas S pring Removabl e Grass Catc he r Sc ree n (Not Visible) Catcher Door Catcher Door Hand le Anti-Sc uff Roller T ailwheel Fork and Whe el Catcher Exha ust Deflector Catcher D oor Gas S pring Prot ect ive C[...]

Component Identification 9 Negative ( -) Battery Cable LH Hy dr os t ati c T ransmis sion RH Hydrostatic T ransmiss ion GHS Blowe r Muffler H eat Shiel d 30 Amp Circuit Br eaker RH T ransm is si on Lockou t Leve r PT O Gearbox Dipstick Preclean er T ube Fuel Pump Donalds on Air Clean er Air Cleaner Cover Rubber B umper (Body Sup por t) Air R est ri[...]

Safety Instructions 10 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 11 6. Do not w ear lo ose fittin g clothin g that coul d get caught i n moving parts. Do not operate th is machin e while wearing s horts; always w ear adequate protective clothing, including lon g pants. Wearing safet y glasse s, safety shoes, and a he lmet is adv isable and requ ired by s ome local or dinances and ins urance r[...]

Safety Instructions 12 9. W atch for hole s, rocks, and roots in the terrai n and f or other hidden h azar ds. When mowin g tall gras s, mow h igher t han de sired t o exp ose any hidd en obstacles . Then, cle an the area an d mow to the desire d height. 10. Avoid sudden st arts or stop s . Befor e backi ng the mac hine up, look to th e rear to b e[...]

Safety Instructions 13 2. T o reduce fi re haza rds, keep th e engi ne free o f grass, l eaves, e xcessiv e grease , and di rt. 3. Keep all nuts, bo lts, and sc r ews tig ht to ensu re the m achin e is in a sa fe, w ork ing co ndi tion. Check the bla de mountin g nuts frequently , mak- ing sure they a re tight. 4. Perform only maintenance instructi[...]

Safety Instructions 14 Adjacent to Blower Discharge Chute through Body (5804) SD Deck Discharge S hield (5848) Front Body Adjacent to RH Steeri ng Le ver (6807) Hydrost at Oil Reservoi r (5810- 2) Rear of G rass Catc her Exhaus t Scr een (5869) Engine Shroud (5855) SAFETY , CONTROL, A ND INSTRUCTION DECALS Safet y , Control , and Instr ucti on D ec[...]

Safety Instructions 15 Fender , RH Side (7802) Catcher Door Hinge Bar , LH and RH Sides (5868) Deck Carr ier Frame (8653) Deck Gear box Cove r (5807-3) On Engine (6810) SAFETY , CONTROL, AN D INSTRUCTION DECALS Safet y , Con trol, and Instr uction Decals ar e inst all ed on the mach ine; if any ar e missing , ill egibl e, or dama ged, a replaceme n[...]

Asse mbly Instr uctions 16 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 17 3. After the batte ry is filled wi th electr olyte, re place the fil ler caps and c harge the batter y . R efer to Battery Ch arging . Battery Ch arging 1. Charge the battery at 15 am p s for 10 minutes . DO NOT exceed 20 amp s maximu m rec om- mended c harging rate. Char ge until s pecific gravi ty is at least 1.2 50. T [...]

Asse mbly Instr uctions 18 Deck Cast er Wheel In stallation NOTE: If se mi-pneumatic wheels are installe d, make sure the space r washers fit over the sp acer tube and are not caught betw een the f ork and the end of the tube. The washers should move fr eely on the axle sp acer tube. 5. Grease the caster whee l bearings and caster pivot bearings - [...]

Asse mbly Instr uctions 19 Tilt-Up S pring and Roller Wheel Inst allation on Rear D ischarg e Deck Mower De ck lns t allation on T r actor Deck Installati on 1. Lightly gr ease each deck sup port arm ( 2) on the tractor . Refer to Mower D eck Inst allati on pho- to on n ext page for locati on of deck supp ort arm . 2. Enga ge the d eck car rier fra[...]

Asse mbly Instr uctions 20 6. Raise the mower body ( instead of l ifting the front of d eck) and c lip the c ounterwei ght springs to the re ceptacle on front of body . Lower the body to tension the s prings. (Refe r to Dec k Counterweight Spring Inst alla tion Photo.) Mower Deck Installation (PTO S haf t Connection) 7. With the co unterweight spr [...]

Asse mbly Instr uctions 21 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 22 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 23 CHECK GEAR AX LE OIL L EVEL Refer to Gear Axle Lubrication in Maintena nce I n- structions . INSPECT FOUR (4) DRI VE BEL TS Engine PTO Drive, Jack shaft Drive , Hyd rostatic Ground Dr ive, and G HS Blowe r Drive (if e quippe d). CHEC K HYDROST A TIC TRAN SMISSION OIL LEVEL Refer to LUBR ICA TIO N for Checki ng Hy dr ost a[...]

Operatin g Instr uctions 24 CONTROL IDENTIFICA TION, LOCA TI ON, AND FUNCTION Ignition Switch The ignitio n sw itch is lo cated o n the right fr ont of the body and is us ed to start and stop the engin e. The switch ha s three po sitions : “O” is th e OFF positi on, RUN is the positio n the k ey ret urns to after starting, and “S” is the ST[...]

Operatin g Instr uctions 25 Ignition Switch Engine Choke The ch oke c ontrol le ver ( black k nob) is locat ed on the left si de of th e seat. T o start a cold engine, m ove the cho ke co ntrol for ward to the ON position . After engin e s t art s, move th e chok e co ntr ol t owa rd t he OFF position , keepi ng enou gh choke to allow the engine to[...]

Operatin g Instr uctions 26 Parking Brake The parking brak e functions by locki ng a pin into the hydro static tran smis sion p inion gear te eth. M ovin g the lev er FORW A RD engages the par kin g br ake; moving the le ver B ACKW ARD releases the brak e. IMPORT ANT : S top the trac tor comp letely before engagin g the parkin g brake. The parking [...]

Operatin g Instr uctions 27 THROTTLE BLADE CLUTCH (PT O) Pull Up to E ngage PA R K I N G BRAKE LEFT WHEEL STEER ING LE VER Forward P osition (No Contr ol Change ) Neut ral- Park Posit ion Reverse Drive Wheel M otion Positio n RIGHT WHEEL STEERIN G LEVER The Forwa rd S peed Con trol als o Establishes the Neutral-Park P osition of the Steering Levers[...]

Operatin g Instr uctions 28 ST ARTING THE ENGINE 1. Before attempting to start the engine, mak e sure the ope rator is in the sea t, the Forwar d S peed Control i s in NEUTRAL-P ARK posit ion, and t he blade clutc h and parking brak e are DISENGAGED. NOTE: Release p arking brake t o prevent extra load on the st arter if t he transmission ne utral i[...]

Operatin g Instr uctions 29 1. Move the FSC out of NEUTRAL-P ARK pos itio n to the d esired forward speed . DO NOT ho ld for- ward on s tee ring leve rs. It is n ot ne ces sary to hold th e FSC l ever i n positi on sinc e a fri ction lock ma int ains t he se lected l ever p ositio n (and forwar d travel s peed). NOTE: This is exactly t he same proc[...]

Operatin g Instr uctions 30 Correct O perato r Hand Posit ion on the Controls 3. Reve rse direc tion of the m ower by pu lling both lever s backw ard. NOTE: Smoo th action on the steer ing levers will produce smooth mower operation . Remem- ber to keep the engine and grou nd speed slow until learning the control r esponse. 4. T he FS C ma y be adj [...]

Operatin g Instr uctions 31 Blade Clutch Enga ged Blade Clutch Disengaged STOPPING THE MACHINE 1. Slow th e eng ine to a fa st idle ; put the throt tle i n the 1/2 th rottle positio n. 2. Pull th e steering levers to the NEUTRAL posi- tion and the n move th e FSC leve r backwa rd to the NEUTRAL-P ARK pos ition. 3. Disenga ge the bla de clutc h. IMP[...]

Operatin g Instr uctions 32 Cutting he ight is adjusted by positi oning the four re- tainer hit ch pin s in a series of se ven ver tical holes o n the deck support pins. Lift handles have been pro- vided on each end of the deck to assist in raising th e deck w hile p ositioning the hit ch pins . Cuttin g heights r ange from 1 in. (25 mm) [t op hole[...]

Operatin g Instr uctions 33 RECOMMENDATIONS FOR M OWING 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 blades . A dull b lade tear s the grass ( re[...]

Operatin g Instr uctions 34 RECOMMENDATIONS FOR TILT-UP DECK OPERATION/TRANSPORT T o avoid poten tial de ck an d/or tractor damag e while using t he tilt -up deck , the follo wing r ecommend a- tio ns ar e of f e re d: • Do not move the tracto r with the dec k in the til t- up posi tion si nce both th e roller wheels (on the ba ck of t he deck) a[...]

Operatin g Instr uctions 35 GRASS HANDLING SYSTEM (GHS) GHS Model Only GHS Flow and Component s PTO and Blade Gear D rive PTO Clutch Rear Di sc ha r ge Mower Dec k Deck Discha rge Chute Blowe r Body Chute Assem bly Grass Ca tcher Catcher Door S pring Catcher Door Exhau st Deflecto r Exhau st Sc reen (Re mov abl e) Catcher Door Safety Lat ch Gra ss-[...]

Operatin g Instr uctions 36 General Information The Gras s Handl ing Sys tem (GHS) c onsists of a rear disc harg e mo wer deck co nne cte d to a 10 i n. (25 cm ) blo wer and a rear mou nted gr ass ca tcher with 6.7 bus hel (238 liters) ca p acity or optiona l 9.5 bushel (335 l iters) capaci ty . The GH S blower oper- ates an y tim e the mower blade[...]

Operatin g Instr uctions 37 Clogging Checklist In case of clo gging, ther e will be a distinct change in the sound of the blower, i.e., the blower s ound will st op. Also, t he mower deck wil l begin to leave a trail of grass clippi ngs. When this occurs, stop th e engine, d isconnect th e spark plug wi res, and mak e sure all movement has stopped [...]

Operatin g Instr uctions 38 Remember, anything that restricts ai rflow or material flow along the entire path from the mower deck to the gra ss catcher can ca use clo gging. Using the Tilt-Up Deck Refer to CLEANING of Grass B uildup in Mower Housing in Maintenance Instructions. Using the GHS Catcher Power fil ® The GH S catc her ha s an osci llat [...]

Operatin g Instr uctions 39 Dumping the Catcher For dum pi ng, th e c at ch er e ithe r tailgate du mps int o a dispo sal are a or dumps in to the opt ional dump bag. T he du mp bag i s a reusabl e nylon fabric bag d esi gn ed to c onveniently move gras s clippin gs from the catcher t o a remote disp osal area o r co ntainer . T ailgat e Dumpi ng 1[...]

Operatin g Instr uctions 40 3. Hook the bottom of the ba g ove r the rear bumper while li fting on the handl e strap. 4. T ilt the catc her bac k to dump i nto the bag by lift- ing on the catcher lif t handle on the lower front cor ner of th e catche r with the one hand while co ntinuing to hold up on the ba g strap with the other hand. Re fer to p[...]

Mainten an ce Instruction s 41 CAUTION Maintenance procedures requir ing special training or tools should be performed by a trained technician. MAINTENANCE SCHE DULE CHART - RECOMMENDE D SERVICE INTERV ALS - MODEL MC Servic e Item Daily 25 Hours 100 Hours 200 Hours Y early Every 2 Y ears Re f. Page Check Engine Crankcase Oil Level x 43 Check/Clean [...]

Mainten an ce Instruction s KOHLER TIP S 42 IMPORT ANT TIPS FOR CARE OF THE KOHLER ENGINE Fuel System • Fuel must be cl ean - free from water , dirt, and or- ganic m ateri al. • Change fu el fil ter on a regul ar basi s and whe n contaminati on is s uspected or found in the f uel. St arti ng/Stopping • S tart engine with the throttle a dvanc [...]

Mainten an ce Instruction s LUBRICATION 43 LUBRICA TION Proper lub ricati on is an important mainten ance pro- cedur e. It reduces wea r and makes the machi ne qui- eter an d easi er to ope rate. Engine Oil Engine Break- In Oil No sp ecial br eak-in oil i s requir ed. The engine is servic ed with 10W-30, Se rvice Clas s SG oi l from th e fact ory .[...]

Mainten an ce Instruction s LUBRICATION 44 1. Park the mo wer on a level surface with th e en- gine stopped. The engine oil s hou ld be warm before drainin g. If no t warm from o perat ion, start the engi ne and run a few mi nutes to wa rm the o il. 2. Before removi ng the d ipstick, cle an the are a around it to keep any dirt or de bris o ut of th[...]

Mainten an ce Instruction s LUBRICATION 45 The mo wer dec k gearb oxes (tee gea rbox and blad e drive gearbox es) are c onnect ed as a uni tized as sem- bly , and oil flo ws free ly between the m. The gear boxes are perm anently lubricated ( oil filled) and sealed re- quiri ng no schedu led lub rication. Ho wever , the gear- box oil seals should b [...]

Mainten an ce Instruction s LUBRICATION 46 4. Lubricat e the U-Jo int in t he dri ve shaft ever y 8 hours with SA E gen eral pur pose lithium or molybd enum ba se gr ease . Gearbox, Dolly Wheel, and U-Joint Lubrication T ractor PTO Gear box Lu brication Checki ng Gear box Oil Le vel Check t he gearbo x oil le vel every 25 hours, an d if necess ary [...]

Mainten an ce Instruction s LUBRICATION 47 T ran smission Res ervoir and Air Bleed Plug Location 3. If the fluid is below the COLD mark (or the tr ans- mission is not perform ing pro perly), loosen the air bleed plug (located on th e top of tra nsmis- sion ca se next to th e pla stic reser voir ). a. If a small amount of flui d leaks from around th[...]

Mainten an ce Instruction s LUBRICATION 48 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 Assembl y G rease [...]

Mainten an ce Instruction s LUBRICATION 49 2 10 13 11 12 23 25 23 24 27 26 2 11 4 8 7 7 29 29 32 31 30 28 28 32 & 37 33 21 22 31 & 38 35 36 34 9 41 40 14 39 15 16 21 3 4 5 6 7 7 8 9 15 14 17 18 19 20 16 Chassis and Deck Lubrication Points[...]

Mainten an ce Instruction s CLEANING 50 CLEANING Engine Air Cleaner System There ar e two main c ompone nts in the engi ne air cleane r system: a turbi ne preclea ner and a Donald- son Radia lseal™ ai r cleaner . Each comp onent is checked, cle aned and maintaine d on a different schedu le based o n the fil tering ac tion req uired . Each c ompon[...]

Mainten an ce Instruction s CLEANING 51 Donalds on Radial seal™ Air Cle aner A remo te moun ted Donald son Rad ialseal ™ air cleane r provide s the a ir filteri ng functio n. Th e paper filter element slid es over a n outl et tube inside the a ir cleane r caniste r with radial sealing action , elim inat- ing the poss ibility of d ust leak s due[...]

Mainten an ce Instruction s CLEANING 52 4. Use a brig ht l igh t insi de t he eleme nt t o i nspec t for dama ge. Check the e lement very ca r efully for pin holes or other damage that wi ll allo w dirt to le ak throug h the paper media . Replace eleme nt i f nece ssar y . 5. Check th e conditi on and res ilienc e of the rad ial seali ng surface ( [...]

Mainten an ce Instruction s CLEANING 53 Cylinder Head Cooli ng Fins It is e ssen tial f or perf ormance and long evity of th e air-coo le d e ngi ne to k ee p th e cy lin der h ead cool in g fins cl ean an d free of obs tructio n. After ever y 8 hours of operati on, check the p erforma nce of the cooli ng system by starting the en gine, holding a h[...]

Mainten an ce Instruction s CLEANING 54 3. Clean gra ss build up undernea th the deck us ing a pres sure was her (a nd scraper if requ ired). NOTE: While some degree of ma terial buildup in the mower deck housing can be tolerated, a point is finally reached where cutting qualit y dete riorates and cloggi ng begi ns to occur because of too mu ch bui[...]

55 Mainten an ce Instruction s CLEANING/ CHECK ING/SER VICING GHS Exhaust Scr een Refer to Cl eaning th e GHS Exha ust Scr een in Op- erating Instructions . Hydrosta tic T ransmission Cooling Fins Keepin g the c ooling fi ns on the hydr ostatic tra nsmis- sions clean and free of o bstr uction is ess ential to avoid overheating the transmissi on flu[...]

56 Mainten an ce Instruction s CHECKING/SERVICING IMPORT ANT : DO NOT over fill the ba ttery . Electr o- lyte w ill ov erflow th rough th e ven ted c aps onto parts of th e machin e and WILL result in severe co rrosion. Cleanin g the T e rminals If batte ry ter minals a re cor roded, remo ve battery from the mower . Using a wire bru sh, remov e cor[...]

57 Mainten an ce Instruction s CHECK ING/SER VICING 4. If the bl ade cutti ng edg e is dull or nicked, it should be sharp ened. Re move blad es for sharp ening by grasping the end of the blade us - ing a ra g or a thi ck, padded gl ove, whi le loose n- ing and re movin g th e nu t, l oc k w asher , and fla t washer that mo unts the blade . 5. Grin [...]

Mainten an ce Instruction s CHECKING/S ERVICI NG 58 Mowe r Deck Ge arbox Oil Seals The m ower dec k gea rbox seal s sh ould be i nspecte d every 2 5 hour s for e viden ce o f oil l eakin g; pa r t i c u - larly the lo wer oil seal o n the blade dr ive gear- box. This sea l is protec ted by the trash gu ard on th e blade hub and se al protect or pla[...]

59 Mainten an ce Instruction s REPLACING/REP AIRING REPLACING/RE PAIRING IMPORT ANT : AL W A YS us e genui ne fact ory re- placem ent parts. Substitute parts CAN resu lt in produc t malfunc tion and possible i njury to the oper- ator an d/or other s. Drive Belts There are four (4 ) individual belts on G HS m odels or thr ee (3 ) bel ts o n SD mo de[...]

Mainten an ce Instruction s REPLACING/REP AIRING 60 Jacksha ft Drive Belt Engine PTO Belt GHS Bl owe r Bel t (GHS M odel Onl y) Hydro static Ground Drive Belt Belt Locations[...]

Mainten an ce Instruction s REPLACING/REP AIRING 61 Engine PT O Drive Belt (3 G roove Power Band) 1. T o remove th e engi ne PTO drive belt: a. Remove t he jacksha ft drive bel t from its idler pulley (by pus hing do wn on idler pu l- ley) and le t the belt dr op down out of th e way . NOTE: S tep (a) is not essential to removing the PT O belt, but[...]

Mainten an ce Instruction s REPLACING/REP AIRING 62 Jacksh af t Driv e Bel t 1. T o re move t he jack shaf t dr ive be lt: a. Remove th e engin e PT O drive bel t, as describ ed in p reviou s secti on. Jackshaf t Drive Belt (Engaged) Jacksha f t Drive B elt (Dise ngaged) Idler P ulley En gine Pulley T ension Spring Jacksh af t Jacks haft Drive Belt[...]

Mainten an ce Instruction s REPLACING/REP AIRING 63 GHS Bl ower Driv e Belt 1. Remove the G HS blower drive belt by unhook- ing the be lt tens ion sp ring from th e hook on the chassis frame (located above th e blow er pul- ley). Lift the be lt tig htener idler pulley up a nd roll belt off the pull eys. Blower Pulley Belt T ight ener Idler Pu lley [...]

Mainten an ce Instruction s REPLACING/REP AIRING 64 Hydrostatic Ground Dr ive Bel t 1. T o remove th e hydrostatic ground d rive be lt: a. Raise the spring-lo aded belt tig htener arm and idl er pulle y to r elax bel t. b. Slide bel t off pulleys, the n release the idler . Hydrostatic Ground Drive Bel t Idler Pu lley Belt Tightener Ar m Jacksh af t[...]

Mainten an ce Instruction s REPLACING/REP AIRING 65 Fuel Filter Model MC is equi pped w ith an in- line fue l fil ter . Vi- suall y inspect t he f ilter pe riodicall y , and replac e the filter yearly . Fuel Filter Location IMPORT ANT : Replace the f uel filt er on ly in a clea n area wher e th e fu el l ine an d co nne ctio ns wi ll no t be contam[...]

Mainten an ce Instruction s REPLACING/REP AIRING 66 After reinstalli ng the blad e, check bl ade timing by moving blades th rough on e (1 ) c om plet e r evo lu- tion. Make sure blade t ips pass cle ar of eac h othe r . If timi ng is incorr ect, refer to Mower Dec k Gear box Replacement in this section. PT O Shear Pin The PTO drive shaft con nectio[...]

Mainten an ce Instruction s REPLACING/REP AIRING 67 Rein stall the bla des fo llowin g proce dure fro m Sharp- en Mo wer Blad es instru ction s. If blades are re- placed , always use W alker or iginal equipment blades to e nsure saf ety an d optimum perfor mance. The qu ality and perform ance of r eplacement blades offered by other manufacturers ca[...]

Mainten an ce Instruction s REPLACING/REP AIRING 68 Mower Deck Gearboxes (Shown with Gearb ox Cover R emoved f or Clarity ) GHS Blower Assembly (and/or Blower Wheel) GHS Bl ower Asse mbly Re mova l 1. Remove the mower deck. Refer to De ck Instal - latio n in Asse mbl y Inst ruct ion s and r everse the proc edu re to rem ove th e de ck. Remove Skid [...]

69 Mainten an ce Instruction s REPLACING/REP AIRING Pressing Blower Wheel Out of Housing Blower Whe el Installation 1. T o install the blowe r wheel, rev erse th e remov- al proced ures. The front bea ring is moun ted on the bl ower wheel shaft, sec ured by a l ocking collar . Dr iv e the lo ck in g c oll ar cl oc k wis e wi th a punch, an d tight [...]

70 Mainten an ce Instruction s ADJUSTMENTS ADJUSTMEN TS Safety Swi tches There ar e three (3) safety interlo ck switc hes on th e tracto r; Seat Switch, FS C Neutral - Par k Switc h, and PTO Sw i tc h. If any of the follow ing con ditio ns occ ur duri ng start- ing or o perating , a safe ty inte rlock sw itch ma y be malf unctioning. Con tact your [...]

Mainten an ce Instruction s ADJUSTMENTS 71 Blade Cl utch (PTO) Clutch Eng agemen t/Belt T ension The c lutch enga gement and PTO belt tensio n are ad- justed us ing the clu tch actuato r rod. Initi ally , after in- stalling a new PTO belt, af ter 10 hours and every 100 hour s therea fter , ch eck and adjus t for th e two d i- mensio ns in t he cl u[...]

Mainten an ce Instruction s ADJUSTMENTS 72 Clutch D isengage ment/Br ake Ac tion The declutched or disengaged position of the blade c lutch idler pulley i s ad justable and is set to give be lt r elease without excessive sla ck and to apply the blade b rake. T he blade br ake is acti vated by the brake ac tuator rod link age to the clutch idler pul[...]

Mainten an ce Instruction s ADJUSTMENTS 73 Use the following procedures to check and adjust clutch disengagement and brake action: S top Bl ock E ccentr ic Ad ju stmen t - S tep 1 Use the stop bl ock attached to PTO belt tighten er arm to se t the bottom positi on of the clutc h idle r pul- ley in the diseng aged po sitio n. T he stop b lock shou l[...]

Mainten an ce Instruction s ADJUSTMENTS 74 Blade Brake Band Adju stment NOTE: The leng th of the actua tor rod is adjuste d by di sconnec ting the bottom clev is a nd shorten ing or length ening acc ordin gly . The standard pre- set length of th e actua tor rod is se t at the fac tory at 8-1/ 4 in. (209 mm). Brake Actuato r Rod Adjustmen t 2. After[...]

Mainten an ce Instruction s ADJUSTMENT S 75 Forward S peed Control St op and Steering Lever Adjustment S teering Leve r End Play Ad justm ent - Step 2 1. Position the FSC lever to the most FOR W ARD position. 2. Loosen th e adjustmen t nut on each steering le- ver a ctuator u ntil end play dev elops betwee n the lev er ac tu ator a nd the adj ustme[...]

Mainten an ce Instruction s ADJUSTMENTS 76 S traight Ground T r avel A djust ment - Step 4 1. Sit in the seat, start the en gine ( opera te at nor - mal sp eed), and with th e FSC i n the NEUTRAL- P ARK positi on che ck for forw ard moveme nt of either drive wh eel (if eithe r wheel mo ves back- ward, refer back to Neutral Functio n Adjust- ment - [...]

Mainten an ce Instruction s ADJUSTMENTS 77 Tilt-Up Deck Adjustable Stop When th e carr ier frame h inge joi nt is prope rly ad just- ed, the d eck l ock lever s shoul d move i n and o ut of th e engaged a nd dise ngaged positions fr eely . All four hitch pi ns used for hei ght adj ustment sh ould sit flus h on the wa shers above the de ck pin bushi[...]

Mainten an ce Instruction s ADJUSTMENTS 78 Carburetor Adjustment 3. S tart the engine and all ow it to warm up by run- ning at 1/2 thr ottle for approxi mately fi ve (5) minutes . The engine mus t be warm before making final se ttings. 4. Move the throttle to th e idle positio n. Adju st idl e speed fo r 1200 r pm (± 75 rpm) by adjus ting the idle[...]

79 Mainten an ce Instruction s ADJUSTMENT S/ ELECTRICAL SYSTEM Checking the Gras s-Pak ® Switch ELECTRIC AL SYST EM For tro ubleshoo ting, refe r to Wirin g Dia gram. IMPORT ANT : Discon nect both ba ttery ca bles b e- fore unp lugging a ny wirin g conn ectors or making re- pai rs on the el ect rical syst em. Circuit Br eakers A maste r circuit br[...]

80 Mainten an ce Instruction s ELECTRICAL SYSTEM Wiring Diagram - Model MC B A M S1 S2 G 87 30 85 86 30 86 85 85 86 87A 87A 30 ST ARTER SOLENOID ST ARTER RECTIFIER/REGULA TOR MAGNETO OIL PRESSURE SWITCH ENGINE CASE GROUND TO MOTOR MOUNT POWERFIL MOTOR GRASS P AK SWITCH R R HORN OPTIONAL LIGHT OPTIONAL LIGHT 30 AMP CIRCUIT BREAKER CHASSIS GROUND BA [...]

81 Operator ’ s Notes[...]

82 Operator ’ s Notes[...]

83 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 one (1) y ear* after date of sale to the original[...]

W ALKER MFG . CO. • 5925 E. HA RMONY ROAD, FORT COLLINS, CO 80528 • (970) 221-56 14 FORM NO. 041503 PRINTED IN USA www .walk ermowers.co m © 2003 W ALKER MFG . CO Sound - Model MC Sound T est Sound test conducted was in accordance with 79/1 13/EEC and was performed on 28 January 98 under the conditions listed: General Co ndition: Clo udy T emp[...]