Walker MT, MTL, MTEFI, MTLEFI manual

OWNER’S MANUAL Safety , Assembly , Ope rating, and Maintenance I nstructions Model MT (2 0.0 HP) Model MTL ( 25.0 HP) Model MTEFI (2 6.0 HP) (Covers 20 04 Production) Please Read and Save These Instr uctions Effective Da te: 01-01-0 4 For Safety , Read All Safet y and Op eration P/N 800 0-9 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 pro vide 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 1 General Informat ion ________ ______ __ 4 HIGHLIGHTED INFORMATION ________ _____ 4 GLOSSARY __________ __________ ______ __ 4 IDENTIFYING NUMBER LOCATIONS ______ __ 4 ENGINE SERIAL NU MBER LOCATION ______ 5 SERVICING OF E NGINE AND DRIVETRAIN C OMPONENTS _________ _____ 5 Specificati ons ______ __________ ______ __ 6 ENGINE __[...]

2 T able of Conten ts Maintenan ce Instr uctions _________ _ 52 MAINTENANCE SCH EDULE CHART ___ ____ 52 IMPORTANT TIPS FOR CARE OF THE KOHLER ENGINE ____ _______ ____ 53 Fuel System ________ __________ ______ _ 53 Starting/Stopping ____ ______ _______ ____ 53 Cooling System - MT, MTEFI _____ ______ _ 53 Cooling System - MTL ___ __________ ____ 53 A[...]

T able of Conten ts 3 ELECTRIC AL SYST EM _______ _______ ____ 92 Circuit Br eakers ________ _______ ______ _ 92 Wiring Diagram - Model MT __ _______ ____ 93 Wiring Diagram - Model MTEFI _________ _ 94 Wiring Diagram - Model MTL _ __________ _ 96 Wa r r a n t y _______ _________ _______ ____ 97[...]

4 General Information HIGHLIGHTED INFORMA TION W alker M anufactur ing recom mends that an y ser- vice r equir ing sp ecia l trai nin g or to ols b e perf orm ed by an a uthorized W alker Mower Dealer . There a re several genera l pract ices to be a ware of in the area of sa fety . Mos t ac c idents as so ci ate d wit h the oper- atio n or main ten[...]

General Information 5 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 mod el(s) cover ed by this manual, an engine manual is availabl e coveri ng the Koh ler en- gin es. En[...]

Specifications 6 MODEL AIR COOLED MT (20.0 HP) MTEFI (26. 0 HP) LIQUID COOLE D MTL (25. 0 HP) ENGINE Manufac turer/Mo del Kohler Comman d CH20, 2 Cyl., Gas oline (Ai r Cooled) Ko hl er Aegis TM LH 685, 2 Cyl ., Gasoli ne (Liqu id Cool ed) Kohler Comman d Pro  CH26, 2 Cyl ., Gasoline ( Air Cooled), Electr onic Fu el Injectio n (EFI) Displac ement[...]

Specifications 7 MODEL AIR COOLED MT (20.0 HP) MTEFI (26. 0 HP) LIQUID COOLE D MTL (25. 0 HP) ELECT RICA L SYSTE M Battery 12 V olt, 35AH, 295 CCA 12 V o lt, 35AH, 29 5 CCA Chargin g System Flywhe el Alter nator Flywhee l Alternato r Chargin g Output 15 Amp DC ( Regulate d) 25 Amp DC ( Regulated ) System Polarity Negative Ground Negative G round Ig[...]

Specifications 8 MODEL AIR COOLED MT (2 0.0 HP) MTEFI (26.0 HP) LIQUID COOLED MTL (25.0 HP ) BLADE DRIVE PTO Shaft Quick Discon nect S plined Shaft with T wo High- S p eed U-Joints Quick Di sconnec t S plined Shaft with T wo High -S peed U-Joints Blade Spindle E ach Blad e (2) Moun ts Direct on Pe erless Right An gle Gearb ox with T ee Ge arbox in [...]

Specifications 9 MODEL AIR COOLED MT (2 0.0 HP) MTEFI (26.0 HP) LIQUID COOLED MTL (25.0 HP ) MOWER DECK (continued) Blade S ize (T yp ical) 42 in . (107 cm ) SD 22 in . (56 cm ) 2 in. (5 cm) Cen ter Overl ap (T wo Blade s, CW Rotation) 22 in. (56 cm) 2 in. (5 cm) Cent er Overl ap (T wo Blade s, CW R otation) 48 in . (122 cm ) GHS 25 in. (64 cm ) 2 [...]

Specifications 10 MODEL AIR COOLED MT (2 0.0 HP) MTEFI (26.0 HP) LIQUID COOLED MTL (25.0 HP ) GHS SYSTEM (Optional) (c ontinued) Full Si gnal (Gras s-Pak ® Switch) Oscill ating V ane Switc h Mount ed on Gr ass D eliver y S pout T riggers H orn Sign al Oscilla ting V ane Switc h Mounted on Grass Delive ry S p out Triggers Horn Si gnal Powerf il ® [...]

Component Identification 11 NOT E: Control Iden tifi catio n shown in Operating Instructions section. Grass Han dling Syst em 9.5 Bus hel Catch er (Op tional) 7.0 Bu shel C atcher St andard (N ot Sho wn) Anti-S cuff Roller T ransmis sion Control Rod Adjustment Nut (LH) Deck Caster Wheels Ti l t - U p Deck Handl e Catcher Lift / Dump Handl e Deck S [...]

Component Identification 12 Catcher Do or Gas S pri ng Instrument P anel Guard Left Hand Drive Wheel Catcher Door Hand le Dump Plate Catcher Door Fuel Filter T ailwheel Fork and Wh eels Remova ble Grass Catcher Sc reen (Not Visible) Catcher Lift / Dum p Hand le Gas S pring Cove r Instrume nt Panel B ox (Shock Mounted) Catcher Exh aust Deflecto r Oi[...]

Component Identification 13 Air Restric tion Indi cator Air Intake Hos e Muffler Grass Shie ld Throttle and Chok e Li nkag e Oil Dipstick/Oil Fill Rubber Bum per (Catche r Suppo rt) Muffler 20 Amp Fuse (S tarter Sole noid) GHS Blo wer RH Hydrostatic T ransmis sion PTO Clutch Lever RH T ransmissi on Lockout Lever PTO Gearbox Dip stick Jacks haft Pos[...]

Component Identification 14 Radiator Hose Fuel Pi ckup Lin e Fue l Filter Preclean er T ube Fuel T ank Air Intake Hos e Wa t e r Pump Radiator Oil Dips tick/ Oil F ill Radiator C ap Ta i l p i p e Mod el MT L Low Idle Adjust ment Sc rew Muffler Shie ld Air Restric tion In d icator Radiator Guard Air Int ake Plenum Air Clean er Cover Overflow Hose O[...]

Component Identification 15 Air Restr iction Indica tor Muffler Gras s Shield Oil Dip sti ck/ Oil Fill Throttle L inkage Preclea ner Tu b e Fuel T ank Air Cleane r Cover Cylinder Head T e mperatu re Sw itch Air I nt ake Hose Donaldson A ir Clea ner Fuel Ret urn Line Model MTEF I Fuel Pic kup Line Muffler Muffler Gras s Shield Air Intake Plenum Igni[...]

Safety Instructions 16 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 ins tructions. Fail- ure to compl y with safety i nstru ction s may resu lt in perso nal in jury . The[...]

Safety Instructions 17 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, includi ng long 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 18 9. W atch for hole s, rocks, and roots in the terrai n and for other hidd en hazar ds. When mowing tall grass, m ow higher than desir ed to expos e any hidden ob stacles . T hen, cl ean the a rea and 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 sur[...]

Safety Instructions 19 2. T o reduce fi re haza rds, keep the 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, wo rkin g cond iti on. Check the bla de mountin g nuts frequently , mak- ing sure they a re tight. 4. Perform only maintenance instructio[...]

Safety Instructions 20 Adjacent to Blower Discharge C hute through Bod y (5804) Front Body Adjacent to RH Steerin g Lever ( 7818) Hydrost at Oil Reservoi r (5810- 2) On Body Adjacent to Clutch Control Le ver (5806) Right Side of Front Body , Below Front Body Latch Release (7820) Rear Cro ss Memb er of Fr ont Body (8 825) Rear o f Grass Catcher E xh[...]

Safety Instructions 21 Instrum en t Pane l MT (8823-2) , MTEF I (8823 -3 ), MTL (882 3-4) Fender , RH Side (7802) Catcher Door Hinge Bar , LH and RH Sides (5868) Lef t Side of Operator Seat (7819) Right Side, Below Operator Seat (7809) T op of Blower Housing (5819) Deck Carr ier Frame (8653) Jackshaf t Support Adjacent to Dipstick (7827) Gear Axle [...]

Asse mbly Instr uctions 22 SETUP INSTRUCTIONS W alk er Mow ers ar e shi pped p art ially a ssembl ed. 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 within [...]

Asse mbly Instr uctions 23 T o f ill (act ivate) ba ttery wi th electrol yte (if battery has been shipp ed dry) : 1. Remove the batt ery hold down bar , di sconnect the batter y cables and lift the battery out of the tray . IMPORT ANT : Battery must be removed from the mower befo re filling wit h electrolyte. IMPORT ANT : Obtain and use on ly batte[...]

Asse mbly Instr uctions 24 Batt ery Inst alla tio n Mower De ck Assem bly Deck Ca ster Wheels I nstallati on 1. R emove th e bolt , nu t, a xle s p acer tube , a nd 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[...]

Asse mbly Instr uctions 25 Deck Di scharg e Shie ld Installa tion (Side Dischar ge Mo dels On ly) Attach the deck side disc harge s hield by pos ition ing the shi eld h inge lug in front of the dec k mount an d fasteni ng with two 3/8 -16 x 1-1 /4 in. bol ts, 3/8-16 ESNA nuts, an d 3/8 in. wave spring washer s. The wave wash ers fit betwe en the tw[...]

Asse mbly Instr uctions 26 5. Conne ct the m ower deck PTO driv e shaft assem bly to the tr actor with the splined quick disco nnect coupler . This couple r simpl ifies shaft align ment an d installation. a. Use the arrows o n the shaft and tube t o align and slide the PTO quick couple r ont o the deck spline s haft. b. Reachin g under the tr actor[...]

Asse mbly Instr uctions 27 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 28 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 29 CH ECK ENGINE COOLING SYSTEM - Mo del MTL • Check t he rad iator ai r intake sc reen to m ake sure th e screen i s clean a nd free of o bstru ction. Also, th e radiator co oling fins shoul d be inspec t- ed an d cleaned if t here is any buildup o f dirt or debr is. (Re move t he int ake sc reen as sembl y to inspect a n[...]

Asse mbly Instr uctions 30 C HECK MOWER BLADE CONDITION, SHARP- NESS, AND SECURITY OF MOUNTING The b lade moun ting n ut shoul d be tigh tened t o 60 ft-lb (81.3 N ⋅ m). I f blade shar pening is req uired, refer to CHECKING/SERVICING for Shar pen Mower Bla des in Maintenance Instructions . ADJUST MOWER CUTTING HEIGHT , IF RE- QUIRED Position the [...]

Operatin g Instr uctions 31 CONTROL IDENTIFICA TION, LOCA TI ON, AND FUNCTION Operating Controls Engine Ch oke - ( Model MT and MT L only) The cho ke con trol lev er (bla ck knob ) is loc ated on the le ft side of the seat. T o start a col d engine, move the ch oke con trol f orwar d to the ON positi on. Afte r engine starts, move the c hoke contr [...]

Operatin g Instr uctions 32 Choke and Throttle Location (MT and MTL) Engine Throttle The th rottle c ontro l lever (red knob) is loc ated on th e left side of the s eat an d is us ed to control engin e speed. Mov in g the le ve r forward toward the FA S T position increase s engi ne speed ; moving it back- ward toward the IDLE po sitio n decrea ses[...]

Operatin g Instr uctions 33 THR OTT LE BLADE CLUTCH (PTO) Pull Up to Engage PA R K I N G BRAKE LEFT WHEE L STEERI NG LEV ER Forw ard P os i ti on (No Cont rol Chang e) Neutral-Park Positi on Reverse D rive Wheel Mo tion Posi tion RIGHT WHEEL STEERING LEVER The Forw ard Speed Control als o Establis hes th e Neutral-Park Po sition of the S teerin g L[...]

Operatin g Instr uctions 34 Front Bo dy Lat ch Rel ease The fron t portion of the trac tor body hi nges fo rwar d for mai ntenance acc ess and is latc hed down in th e OPERA TING position . T o raise the bo dy , move the latch rel ease for ward. Front Bod y Latch Rel ease T ransmis sion Loc kout Lev ers The trans missi on lockout levers dise ngage [...]

Operatin g Instr uctions 35 Instrument Panel Instrument Panel This ill ustrati on show s the confi guration of the swit ch es a nd ind ica tor s loca ted on th e instr ument panel. Hourmeter Oil Pressure W arning Light Light S witch (Optiona l) Wa r n i n g Horn Ignition Switc h Wa r n i n g Horn Wa r n i n g Horn Ignition Switc h Ignitio n Switc h[...]

Operatin g Instr uctions 36 Hourmeter The hour meter di splays operating time accumu- lated whi le the ignit ion switc h is in the ON posit ion . Vo l t m e t e r The voltme ter displ ays battery and chargi ng system voltage. An indic ation of low or high voltage (the red area) i ndicates an electrical system failure. The cause of the failure sh ou[...]

Operatin g Instr uctions 37 Ignition Switc h The i gniti on swi tc h is u sed t o start and stop the e n- gine. The s witch has thr ee po sitio ns: “O ” is th e OFF position, RUN is the positi on the key ret urns to after starting, and “ S” is the ST ART po sitio n. When s tart- ing the engi ne, turn the key clockw ise to the “S” po- si[...]

Operatin g Instr uctions 38 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 Contro l is 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 39 IMPORT ANT : For M odel MT a nd M T L, m ake su r e the ch oke is in the OFF position during normal en- gine ope ration; r unning with the chok e in the ON po- sition CAN dama ge the engi ne. ADJUSTING GROU ND SPEED AND STEERING IMPORT ANT : If the DSD52 or DSD62 Mowe r deck is ins talled on the tractor , make s ure the [...]

Operatin g Instr uctions 40 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 steering leve rs 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 may be adj u[...]

Operatin g Instr uctions 41 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 42 ADJUSTING CUTTING HEIGHT 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[...]

Operatin g Instr uctions 43 RECOMMENDA TIONS FOR MOWING IMPORT ANT : Oper ate th e eng ine 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 syst 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 ( resu[...]

Operatin g Instr uctions 44 RECOMMENDA TIONS FOR TIL T -UP DEC K OPERA TION/TRANSPORT T o avoid p otentia l deck an d/or trac tor damag e whil e using t he tilt -up deck , the follo wing r ecommend a- tio ns ar e of fe red: • 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 de[...]

Operatin g Instr uctions 45 GRASS HANDLING SYSTEM (GHS) GHS Model Only GHS Flow and Component s PT O and Bla de Gear Driv e PTO Clutch Rear Di scharg e Mower Deck Deck Discharge Chute Blow er Body Ch ute Assemb ly Gras s Ca tche r Catcher Door S pring Catcher Door Exhaus t Deflector Exhaust Scr een (Remov able) Catcher Door Safety L atch Grass-Pa k[...]

Operatin g Instr uctions 46 General Information The Gras s Handl ing Sys tem (GHS) c onsists of a rear disc harg e mow er de ck co nnect ed to a 10 in. (25 cm ) blo wer and a rear mou nted gr ass ca tcher with 7.0 bus hel (246 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 47 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 48 • Check th at the openings in the removable air exhaust screen in the grass catcher are no t plugged . If the scree n is clog ged, refer to Cle aning the GHS Exha ust Screen in this sect ion. NOTE: An opti onal exhaus t screen with larger hol es (3 / 4  is available for use when mowi ng in we t grass; the screen [...]

Operatin g Instr uctions 49 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 50 3. Hook the bottom of the ba g ove r the rear bumper while li fting on the handl e strap(s ). 4. T ilt the c atcher b ack to du mp int o the bag by lif ting on the catcher lift handle on the lower front cor ner of th e catche r with the one hand while c ontinu ing to hold up on the bag strap(s) with the other hand. Re fe[...]

Operatin g Instr uctions 51 Power Dump Component s Grass Cat ch er Cable Guide Catcher Door Gas S pri ng Catcher Door Cable Rod Guide Cabl e Assem bly Fork Lift Channel Door A ctuat or Arm Gas Sp r i n g Rubber Bumpe r Power Dump Ram Actu ator Dog Leg Assembl y Actuator Mount Assem bly[...]

Mainten an ce Instruction s 52 MAINTENANCE SCHE DULE CHART - RECOMMENDE D SERVICE INTERV ALS - MODEL MT , MTEFI, MTL Service Item Daily 25 Hours 100 Hours 200 Hours Y e arly Every 2 Y ears Ref . Page Check Engine Crankcase Oil Level x 54 Check/Clean Engine A ir Cooling System* x 64 Check Coolan t Level, Ra diator/ Overflo w T ank MTL x 67 Clean Rad[...]

Mainten an ce Instruction s KOHLER TIPS 53 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. • On the Mod el MTEFI, the fu el syste m is pressur- ized. Do n[...]

Mainten an ce Instruction s KOHLER T IP S/LUBRICA TION 54 Oil • Use only mul ti-v isc os ity oil s as spec ified with the viscos ity matchin g ambi ent temper atures fo r the en- gine ope r ating co nditions. This will aid starting in cold weath er and assu re proper lubric ation in hot weather . • Use on ly Kohl er oil filt ers. Aftermarket fi[...]

Mainten an ce Instruction s LUBRICATION 55 Chang ing Engi ne Cran kcase Oil/Oil F ilter For Mo del M T and MTEFI, c hange the engine c rank- case oil af ter ever y 100 hours of o peration and re- place th e oil f ilter ev ery other oil cha nge ( e very 200 hours of operat ion). For Mo del MTL, chan ge the eng ine cran kcas e oil af- ter every 200 h[...]

Mainten an ce Instruction s LUBRICATION 56 Ident Lubrication No. No. Location T ype Places Ident Lubricat ion No. No. Loca tion 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 Universal Jo int Shaft Assembl y G rease ** 1 6 Pivot Assembly , T ilt-[...]

Mainten an ce Instruction s LUBRICATION 57 Chassis and Deck Lubrication Points 2 2 3 11 5 4 4 7 7 8 8 6 6 6 6 10 11 9 13 13 12 15 16 14 14 18 19 19 17 20 & 36 22 22 21 24 25 23 27 27 26 29 30 30 & 35 28 32 33 31 34 34 20[...]

Mainten an ce Instruction s LUBRICATION 58 Mower Deck Gearbox Lubrication NOTE: These in structi ons apply to all mower dec ks with gear -driven blades . Refer to DSD52 or DS D62 Mower Deck Lubrication in this section for th e DSD52 or DSD62 dec k with be lt-dri ven blade s. The mo wer dec k gearb oxes (tee gea rbox and blad e drive gearbox es) are[...]

Mainten an ce Instruction s LUBRICATION 59 2. Ch eck the oil le vel in the belt dri ve gearbox ev- ery 100 hour s (or s ooner i f a v isible oil leak has develo ped). With t he deck i n the n ormal o per- atin g position, remo ve the lev el plug in the side of the gearcase. A dd SA E E.P . ( Extrem e Pres- sure) 9 0W oil t o maint ain the oil level[...]

Mainten an ce Instruction s LUBRICATION 60 Hydrosta tic T ransmission Fluid Checki ng Hyd rostatic T r ansmiss ion Fl uid Le vel Hydrostat ic transm ission fluid l evel s hould be checke d every 25 hours of machine ope ratio n. It is preferabl e to c heck the flu id level w hen fluid is cold . Check fluid l evel as follows: 1. Park th e mow er on a[...]

Mainten an ce Instruction s LUBRICATION/CLEANING 61 3. Rein stall the lower dr ain plug, ma king sur e the rubber O -ring on the plug i s in place an d in good condition. 4. Refill th e transmi ssion throu gh the ai r bleed plug hol e unti l it is a s full as possi ble. IMPORT ANT : Avoid fluid co ntamination when filling the reservoir . Use clean [...]

Mainten an ce Instruction s CLEANING 62 T urbine Pr ec le ane r The t urbine prec leaner is mounted o n a remote a ir intake tube c onnected to the Donald son air c leaner . A spi nning fa n dr iven b y the i ntake air flow s eparates dust fr om the air , gi ving the initi al stage of air clea n- ing. Dust parti cles are ex haust ed through a singl[...]

Mainten an ce Instruction s CLEANING 63 1. Rele ase the top and bo ttom cover latc hes and remove the air cle aner co ver . W ash th e cover and V acu ator™ val ve. Check that these co m- pone nts are in good condit ion. The V acuat or™ valv e is s ubj ect to we ar an d det eri or ation and shoul d be rep lac ed yearly or when damaged . The lip[...]

Mainten an ce Instruction s CLEANING 64 Engine Cooling System - MT20 and MTEFI Air Int ake Sy stem T o pr ev en t engi ne over he ati ng an d pos sibl e eng in e dama ge, clean gras s clippin gs, chaff, and dirt fr om the rotating engine air intake scr een after every 8 hours of operation. In certain mowing c onditions (dry gr ass, leav es, tree ?[...]

Mainten an ce Instruction s CLEANING 65 2. Insp ect the rad iator coolin g fins fo r mater ial lodged in thi s area which would restri ct coolin g airflo w . Use pre ssurized air or wat er to clean. DO NOT use a ny tool, lik e a screwdriver or knif e, to clean mater ial out of the fi ns as this may da mage th e cooli ng fins. DO NOT use cold water [...]

Mainten an ce Instruction s CLEANING 66 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 buildup on the b affling and housing. 4. Lower th e deck to th e normal operatin g posit ion and re- enga[...]

67 Mainten an ce Instruction s CLEANING/ CHECK ING/SER VICING 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 fluid and short- ening tr ansmis sion lif e. The c oolin g fi ns sh oul d be checke d every 10 0 h[...]

68 Mainten an ce Instruction s CHECK ING/SER VICING IMPORT ANT : The coo lant solu tion of an tifre eze and disti lled water must be thoroughl y pre-mixe d be- fore p utting it in the e ngine (addi ng pure antifreez e into the r adiator m ay cause damage to the engin e by caus ing ov erhe ati ng) . Security of Air Filtration Component s NOTE: The f[...]

69 Mainten an ce Instruction s CHECK ING/SER VICING 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 corro- sion with a s olution o f one part baking s oda and four p art s water . Rinse with clean water . Coat the termin als with petr oleum jelly or ter minal pr otector [...]

Mainten an ce Instruction s CHECK ING/SER VICING 70 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 [...]

71 Mainten an ce Instruction s CHECK ING/SER VICING 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[...]

Mainten an ce Instruction s REPLACING/REP AIRING 72 REPLACING/RE P AIRI NG IMPORT ANT : AL W A Y S us e genuine fa ctor y 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 belt s on GHS mo dels or three (3) belts on SD mode ls[...]

Mainten an ce Instruction s REPLACING/REP AIRING 73 Engine PT O Drive Belt ( 3 Groove 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 74 Jacksh af t Driv e Belt 1. T o remo ve the jacksh aft dri ve belt : 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) Idl er P ulley Engine Pulley T e nsion S pring Jacksha ft Drive Belt Push Idle r [...]

Mainten an ce Instruction s REPLACING/REP AIRING 75 GHS Bl ower Driv e Belt 1. Remove th e GHS blower dr ive belt t ension by depres sing the idle r pulley on the tig htener arm. Roll the belt o ff the blower pul ley and remov e. Blowe r Driv e Pulley Depres s Idle r Pulley Down to Relax B elt Belt T ight ener Idler P ulley (Disen gaged) Blowe r Pu[...]

Mainten an ce Instruction s REPLACING/REP AIRING 76 Hydrostatic Ground Dr ive Bel t 1. T o r emove th e hydros tatic grou nd drive 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[...]

Mainten an ce Instruction s REPLACING/REP AIRING 77 Fuel Filter - Model MT and MTL Mode ls MT an d MTL are ea ch equ ipp ed w ith an i n- line fue l fi lte r . Visually inspect th e fi lte r p eriod ic al ly , and repla ce the filter yearl y . Fuel Filter Location IMPORT ANT : Replace the f uel filt er on ly in a clea n area wher e th e fue l lin e[...]

Mainten an ce Instruction s REPLACING/REP AIRING 78 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 79 Rein stall the blade s foll owing pro cedure i n CHECKING/SERVICING for Sharpen Mowe r Blades instr uctions . If blades a re repl aced, alwa ys use Walker original equipment bla des to ensure safety an d optimu m perform ance. The quali ty and perfor mance of repl acement b lades o ffered by other[...]

Mainten an ce Instruction s REPLACING/REP AIRING 80 Mower Deck Gearboxes (Shown with Gearb ox Cover Re moved 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 mbly Instr uct ions and reverse the proc edu r e to r emov e th e deck. Remove Skid Ba[...]

Mainten an ce Instruction s REPLACING/REP AIRING 81 Pressing Blower Wheel Out of Housing Blower Whe el Installation 1. T o ins tall the blowe r wheel, rev erse t he 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 coll ar cl oc kw is e wi th a punch, an d tight[...]

82 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 unctioni ng. Contact you W[...]

Mainten an ce Instruction s ADJUSTMENTS 83 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 84 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 85 Use the following procedures to check and adjust clutch disengagement and brake action: S top Bl ock E ccentr ic Adju stment - 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 ld [...]

Mainten an ce Instruction s ADJUSTMENTS 86 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 87 3. T ighten the j am nut on the for ward travel stop adj us tin g bol t . 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[...]

Mainten an ce Instruction s ADJUSTMENTS 88 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 89 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 90 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[...]

Mainten an ce Instruction s ADJUSTMENTS 91 GHS “Full” Signal Horn with Grass- Pak ® Switch If the GHS “full” signal h orn i s not soun ding whe n the catche r is fu ll, the fo llowi ng troubl eshootin g and a d- justme nt inst ruction s apply : 1. Check t he hor n. a. Disconnec t the two w ires from th e Grass- Pak ® switch electric conne[...]

92 Mainten an ce Instruction s ADJUSTMENTS/ELECTRICAL SYSTEM Adjusting t he Grass- Pak ® Sw itch 3. If adj ustment is requir ed, hold the Grass- Pak ® switch mount bracke t fir mly , gra sp the s witch and bracket and ben d it down . Adjus tments sho uld be don e in very sm all incr ements chec king the measur ement each time until the recomme nd[...]

93 Mainten an ce Instruction s ELECTRICAL SYSTEM Wiring Diagram - Model MT 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 IGNITION SWITCH CIRCUITS OFF ST ART RUN RUN G + M B + A / S1 + S2 B + A RELA Y - A ST ART RELA Y OFF ST ART PTO ON OPEN OPEN 30 + 87 [...]

94 Mainten an ce Instruction s ELECTRICAL SYSTEM RELA Y - A RELA Y - B ONL Y DEPT . SERVICE TEST PLUG DIAGNOSTIC 86 85 TO J12/J13 TO J1/J2 TO J1 TO J11 TO J10 TO J3/J4 TO J3 TO J3 TO J8 TO J20 TO J20 TO J20 TO J2 TO J4 TO J5 J21 TIME DELA Y MODULE FOR T AIL WHEEL LOCK J17 J14 = IGNITION COIL GROUND J20 = SPEED PICK-UP SENSOR J13 = #2 IGNITION COIL [...]

95 Mainten an ce Instruction s ELECTRICAL SYSTEM OPTIONAL LIGHT OPTIONAL LIGHT RED/WHT RED/ WHT RED/ WHT WHT PUR RED RELA Y - D RELA Y - C 20 AMP FUSE 10 AMP FUSE PUMP FUEL HORN SWITCH GRASS P AK ST ARTER SOLENOID ST ARTER OIL PRESSURE SWITCH OIL TEMP SWITCH TEMP SWITCH CYLINDER HEAD BREAKER CIRCUIT 30 AMP LIGHT ENGINE CHECK METER HOUR METER VOL T [...]

96 Mainten an ce Instruction s ELECTRICAL SYSTEM _ + - 30 85 87 87A 30 85 30 85 87A IGNITION SWITCH CIRCUITS ST ART RUN OFF G + M B + A B + A / S1 + S2 ST ART PTO ON RELA Y - A PTO RELA Y OFF 30 + 87A OPEN 30 + 87A ST ART RUN RELA Y - B ST ART RELA Y OFF 30 + 87 OPEN OPEN ST ART RUN RELA Y - C F AN INTERRUPT RELA Y OFF OPEN 30 + 87A 30 + 87A RUN (L[...]

97 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 its option, rep air or replace, without charge, any p art covered by this warranty which is found to be defective in material and/or workmans hip within one (1) year* after date of s ale to the origina[...]

W ALKER MFG . CO. • 5925 E. HARMONY ROAD, FORT COLLINS, CO 8052 8 • (970) 221-56 14 FORM NO. 02 1404 PRINTED IN USA © 2004 W ALKER MFG . CO Sound - Mo del M T Sound T est Sound test co nducted was in accordance with 79/1 13/EEC and was performed on 22 March 96 under the conditions listed: General Con dition: Cle ar T e m p e r a t u r e : 5 0 [...]