Walker MT manuale d’uso

OWNER’ S MANUAL Safety , Assembly , Operating, and Maintenance Instructions Model MT (20 .0 / 2 5.0 HP) (Cover s Seri al Nu mber s 9 5-21 329 a nd o n) Please Read a nd Save These Instructions Effective Date: 08-14-98 For S afety , R ead All Safet y and Op eration P/N 8000-1 Instructions P rior to Operating Machine Price $5.00 ™[...]

For ewor d Thank you. . . for purchasing a Wal ker mower . Every ef fort has been made to provide you with the most reliable mower on the market, and we are sure you will be among our ma ny satisfied custom- ers. If f or any reason t his product does not perform to your expectations, please contact us at (970) 221-5614. Every customer is important [...]

Ta b l e o f C o n t e n t s Gen eral I nf orm ation __________ ______ 1 HIGHLIGHTED INFORMA TION _______ ______ 1 GLOS SA R Y ___ ______ _______ ______ ______ 1 ID EN TI FY ING NU MB E R LO C A TION S ________ 1 ENGINE SERIAL NUMBER LOCA TION ______ 2 SER VICIN G OF ENGINE AND DRIVETRAIN CO M PONENT S __________ 2 Sp e ci fi cations ____ _______ _[...]

Ta b l e o f C o n t e n t s Maintenance Instruct i ons _____ _____ 44 MAINTENANCE SCHE DULE CHART _______ 44 IMPO R T ANT T IPS FOR CARE OF THE KOHLER ENGINE _____ 45 Fuel System _ ______ _______ ______ _____ 4 5 St ar tin g/ Sto p p in g ___ _______ ______ _____ 45 Cooling System ___________ ______ _____ 45 Air Cleaner System _ _______ ______ ___[...]

Gene ral Infor mation 1 HIGHLIGHTED INFORMA TION Wal ker Man ufacturing recom mends that a ny s er- vice requiring special training or too ls be perf ormed by an authorized W alker M ower Dealer . There are several general practices to b e aware of in the a rea of safety . Most accidents ass ociated with the oper- ation or mai ntenance o f a W al k[...]

Gene ral Infor mation 2 T racto r Serial Number Loc ation Mowe r De ck Ser ial N umbe r Loca tion ENGINE SERIAL NUMBER LOCA TION Refer to the eng ine manual that accompanies this manual for the location o f the engine serial nu mbe r . For the mo wer m odel covered by this m anual, an en- gine m anual is available coverin g the Kohler CH2 0 and CH2[...]

Spe cificatio ns 3 MO DEL MT 20.0 HP MT 25 .0 HP ENGIN E Manufac turer/Model Koh ler CH20, 2 Cyl., Gas oline (Air Cooled) Kohler CH25, 2 Cyl., Gasoline (Air Cool ed) Displacemen t 38.1 cu. in . (624 cc) 44.0 cu. in. (725 c c) HP (@ 360 0 RPM ) 20.0 25.0 Max. RPM (No Load) 3750 3750 Governe d RPM 3600 3600 Max. T orque [ft -lb (N ⋅ m) @ RPM ] 32 ([...]

Spe cificatio ns 4 MO DEL MT 20.0 HP MT 25 .0 HP TRA N SM I SSI ON (c on t in ued ) Service Brak e D ynamic B raking through Hy dr ost at ic T ran sm is si on Dynamic B raking t hrough Hydrostatic T ransmission Parking Brake Mechan ical Pin Lock in T ran smiss ion Ge ar Mechanical P in Lock in T ransmission G ear Neutral T ran smission Releas e by [...]

Spe cificatio ns 5 MO DEL MT 20.0 HP MT 25 .0 HP TIRE PR ESSU RE Deck Caster Wheel 20 PSI (137 kPa) 20 PSI (137 kPa) Drive 15 PSI (103 kPa) 15 PSI (103 kPa) Rear 20 PSI (137 kPa) 20 PSI (137 kPa) DIMENSIONS (T r actor an d Mower)* Length 91 in. (231 cm) 91 in. (231 cm) Width 49 in. (124 cm) 49 in. (124 cm) Height 44 i n. (1 12 cm) 44 in. (1 12 cm )[...]

Spe cificatio ns 6 MO DEL MT 20.0 HP MT 25 .0 HP DRIVE BEL TS Engine PTO Walker P/N 823 0 Wal ker P/N 8 230 Jackshaft Dri ve Gat es 3VX 355 (or Wa lker P/N 6231) Gates 3VX35 5 (or W alker P/N 6231 ) Ground Drive, Micro-V Walker P/ N 724 8 Wal ker P/N 7248 Blower (GHS Model) Gates 3VX280 (or Wa lker P/N 7234) Gates 3VX28 0 (or W alker P/N 7234 ) GHS[...]

Component Identification 7 Fr on t View an d R ig ht Side View NOTE: Control Ident ification shown in Operatin g Instructi ons section. Grass Ha ndling S ystem 7.0 Bus hel Catcher Anti- Scuff Roller T ransm ission Control Rod Adjustm e nt Nut (RH) Deck Support Arms T ransm ission Control Rod Adjust ment Nut (LH) Deck L ift Handle (Cutting Height A [...]

Component Identification 8 Catcher Door Gas Spr ing Instrument Panel Guard Inst rumen t Panel Box (Shock M ounted) Deck Lift Rod Left Hand Drive Wh eel M uffl er T ailpi pe Oil D ra in Plug Catcher Door Hand le Dump Pla te Catcher Door A nti -S c u ff Ro ller Oil Filter T a ilwheel Fork and Wheels Removabl e G rass Catcher Screen (Not V isible) Cat[...]

Component Identification 9 Air Rest ricti on Indi cator (Not Visible) A ir In ta ke Ho s e (Primary to Second ary) Air Cleaner Bas e P l a t e Fuel Pum p Engine Air Cleaner (Secondary) M u ffle r Gra s s Shie ld Throttle and Choke Linkag e Muffler H eat Shi e ld Oi l Di pst ick / O il Fi ll Rubber B umper (Catcher Support ) M uffl e r 20 Amp Fuse ([...]

Safety I nstructions 10 Pay particular at tent ion to any information labeled DANGER , W ARN ING , CAUTION , IMPORT ANT , and NO TE in this ma nual. When y ou see the Safety A lert Symbo l ( ), read, und erst and, and follow the in structions. Fail- ure t o comply w it h safet y inst ru ctio ns may resul t in personal i njury . The serious ness or [...]

Safety I nstructions 11 6. Do not wear loose f i tting clothing that could get caught in m oving parts. Do not operate this machine whi le wearing short s; always wea r adequ ate protecti ve cloth ing, including lon g pants. Wearing safe ty g lasses , s a fety shoes, and a helm et is advisable and required by som e local ordi nances a nd insuranc e[...]

Safety I nstructions 12 10. Diseng age the blade drive when transporting the mach ine across drives , sidewalks, etc. Ne- ver rai se the mowe r deck wh ile b lades ar e rotating . 11 . The m aximum reco mm ended side slope op- erating ang le is 20 degrees or 33% grade. When operat ing the m achine o n a slop e, reduce speed a nd use caut ion to sta[...]

Safety I nstructions 1 3 4. Per fo rm onl y mai nt ena nce inst ru cti ons de- sc r ib e d in thi s ma nu a l. Unauthorized ma in- tenance operat ions or machine mo difications may result in unsafe operating condit ions. 5. If the engi ne m ust be running to pe rform a ma in- tenance adju stment , keep hands, feet, and clothing aw ay from m oving p[...]

Safety I nstructions 14 Adjacent to Blow er Discharge Chute throu gh Bo dy (5804) SD Deck Disch arge Shield (5848) Fr ont Body Adjacent to RH Steering Lever (7818) Hydrost at Oil Reservo ir (5810) On Body Adjacent to Clutch Contro l Leve r (58 06) Ri gh t Side of Fro nt B od y , B el ow Front Body Latch Release (7820) Rear Cross Memb er of Front Bo[...]

Safety I nstructions 1 5 Instrume nt Pan el (8823 ) Fender , RH Side (7802) Catcher Door Hi n ge Bar , LH an d RH Sides (58 68) Left Side of Operator Seat (7819) Right Side, Below Opera tor Seat (7809) T op o f Blow er Housing (5819) Deck Carrier Fram e (8653) Jacksh aft Support Adjacent to Dip stick (7827) Gear Axl e (5810-1) Deck Gearb ox Cov er [...]

Assemb ly In struction s 16 SETUP IN ST RUCTION S Wal ker Mo wers are shipped partial ly assem bled. After uncrating the t ractor and m ower de ck, initial setup i s requi red. NOTE: Dur in g th e pr oc ess of un p ack ing , an y da m- aged or mi ssing parts shoul d be noted and reported to the delivering c arrier imme diately (pu t in w riting wit[...]

Assemb ly In struction s 1 7 3. After the battery is filled with electrolyte, replace the filler cap s and c harge t h e b attery . Refer to Battery Charging . Battery Charging 1. Charge th e battery at 15 a mps for 10 m inutes. DO NOT exce ed 20 a mps maximum rec om- mended chargin g rate. Charge unt il spec ific gravity is at least 1.250 . T o ta[...]

Assemb ly In struction s 18 Deck Ca ster Whe el Instal lation NOTE: If s emi-pneum atic wh eels are in stalled , make sure t he spacer washers fi t over the s pacer tube and are not caught between t he fork and the end of the tube. The washer s should move freel y on the axle sp acer tube. 5. Grease t h e caster wheel beari ng s and cas ter pivot b[...]

Assemb ly In struction s 1 9 NOTE: When ins talling the D SD 52 or DSD62 Mower dec k, make sure t o retr act the dol ly wheel aft er mounting the deck on the tract or . 3. If the deck i s rear discharge (G HS equippe d model), the rear discharge chu te will need to b e aligned and c onnected to the blower inlet dur- ing t he last 2 in. (51 m m) of [...]

Assemb ly In struction s 2 0 Deck Counterw eight Spri ng Inst all ation Deck Leveli ng 1. Position mower on a s mooth, level s urface. S et the cutting height to the high est position - 4 in. (102 mm) - f or easy access under t he deck to measure bl ade hei ght. Refer to ADJU STING CUTTING HEIG H T in Opera tin g Instructio ns . NOTE : A block of w[...]

Assemb ly In struction s 21 PREOPER A TING CHECKL IST Before operating the mower for the first time, and as a routine before daily operations, it is imp ortant to make sure t he mower i s properly prepared an d ready for operation. Th e following is a list of items to be checked. (For a mower with frequent operation, some of these items will not ne[...]

Assemb ly In struction s 2 2 C H E C K G E AR A X L E O I L L E VE L Refer to Gear Ax le Lubr i cat ion in Main tenanc e In- stru ction s . INSPECT FOUR (4 ) DR IVE BEL TS Engine PTO Dri ve, Jackshaft Drive, Hydros tatic Ground Dri ve, and GHS Blo wer Drive (if equi pped). CHECK HYDROS T A TIC TRANSMI SSION OIL LEVEL Refer to L U BRICA TION for Che[...]

Assemb ly In struction s 2 3 CHECK MO WER BL ADE CO NDITION, SHARP- NESS, AND SECURITY OF MOUNTING The blade m ounting nut should be tight ened to 60 ft-lb (81 .3 N ⋅ m). I f bla de sha rpening is req uired, refer to C HECKING/SER VICING for Sharp en Mow er B lades in Maintenance I nstructions . ADJUST MOWER CUT TING HEI G HT , IF RE- QUIR ED Pos[...]

Op er atin g In st ruct io ns 2 4 CONTROL IDENTIFICA T IO N, LOCA TION, AND FUNCTION Operati ng Co ntrols Engine Choke The choke co ntrol lever (black knob) is located on the left side of the seat. T o start a cold eng ine, mo ve the choke cont rol forward to t he ON posit ion. After engine starts, move the choke cont rol toward the OFF position, k[...]

Op er atin g In st ruct io ns 2 5 Choke a nd T hrottle Location Engine Throttle The throttle con trol lever (red knob ) is located o n the left side of t he seat an d i s us ed to cont rol engin e speed. Movi ng the lever forwar d to w a r d th e FAS T pos itio n incr eases eng ine speed; movin g it back- wa rd toward the IDLE position de crease s [...]

Op er atin g In st ruct io ns 2 6 Front Body La tch Release The fr ont port ion of the tractor bo dy hing es forward for maintenance ac cess and is latched down in t h e OPERA TIN G po sition. T o raise the body , move the latch release forward. Fr on t Bo dy La tc h Re leas e T ran smission Lock out Levers The t ransm ission lockout le vers diseng[...]

Op er atin g In st ruct io ns 2 7 CHOKE THROTTLE BLADE CLUTCH (PTO ) Pull Up to Engage PA R K I N G BRAKE Inter media te Ground S peed Positi on The F orward Spee d Co ntrol al so Establishes the N eut ral-P ark Po sition o f the S teering Levers LEFT WHE EL STEERIN G LEVE R RIGH T WHEEL STEERI N G LEVER Reverse Drive W heel Motion Pos i tio n FORW[...]

Op er atin g In st ruct io ns 2 8 Inst ru m ent Pa ne l Inst ru m ent P ane l This illustration shows the configuration of t h e switch es and indicators locat ed on t he i nstrument panel. Hourmeter Vo l t m e t e r Oil P ressure Warni ng Lig ht Over T em pera ture Warni ng Ligh t Ignition Switc h Light Switch (Optional) War n i ng Horn[...]

Op er atin g In st ruct io ns 2 9 Hourmeter The hou rmeter di splays operating time accumu- lated while the igni tion switc h is in t he ON position. Vo l t m e t e r The voltm eter displays b attery and charging system voltage. An i ndication of low or high v oltage (below 1 1. 5 volts or above 15.5 volts) indicates an electri - cal s ystem fai lu[...]

Op er atin g In st ruct io ns 3 0 ST ART ING THE ENG INE 1. Before at tempting to start the engine, mak e sure the operator is in the seat, t he Forward Speed Control is in NEUT RAL-P ARK position, and the blade clutch and parking brake are DISENGAGED . NOTE: Releas e pa rking brak e to prev ent ext ra load on the star ter if the trans m iss ion ne[...]

Op er atin g In st ruct io ns 31 IMPORT ANT : Make s u re the chok e is in the OFF position during normal engine operation; running with the choke in the ON p os i ti on CAN dam age the engine. ADJUSTING GROUND SPEED AND S TEERING IMPORT ANT : If the DSD52 or DSD62 M ower deck is installed on the tractor , make su r e the dol ly wheel is retracted [...]

Op er atin g In st ruct io ns 3 2 Correc t Op erato r H and P osition on t he Controls 3. Reverse direction of the m ower b y pul ling bot h levers backward. NOTE: Smoot h action on the steer ing lever s will produc e smooth mowe r ope ration. Remem- ber to keep the engine and groun d speed slow until l earning t he control re spons e. 4. The FSC m[...]

Op er atin g In st ruct io ns 3 3 Bla de C lu t ch E nga ge d Blade Clutch Disengaged STOPPING THE M ACHINE 1. Slow the engin e to a f ast idle ; put the throttle in the 1/2 throttle position. 2. Pull the steering levers t o the NEUTRAL posi- tion and t hen mo ve t he F SC lever b ac kw ard to the N EUTRAL-P ARK position. 3. Disengage the blade clu[...]

Op er atin g In st ruct io ns 3 4 ADJUSTING CUT TING HEIGHT Cutting heig ht is adjusted by positioning the four re- tainer hi tch pins in a serie s of seven vertical h oles on the deck sup port pins. Lift handles have been pro- vided on eac h e nd of the dec k to as sist in raising the deck while position ing the hitch pins. Cutting heights rang e [...]

Op er atin g In st ruct io ns 3 5 RECOMMENDATIONS FOR MOWING IMPORT ANT : Operat e the engine at full spee d when m owing, to al low the engine to produce full horsepow er and to increase effi ciency of the engine cooling system. • Keep the m ower deck and d isch arge chute c lean. • Mow with sha rp blades . A du ll blade t e ars the grass (res[...]

Op er atin g In st ruct io ns 3 6 RECOMMENDATIONS FOR T ILT-UP D ECK OPERATION/TRANSPORT T o avoid potential deck and/or tractor damage while using the tilt-up deck, the following recom menda- tions are of fered: • Do not mo ve the tra ctor with the deck i n the tilt- up position since bot h the roller wheels (on t he back of the deck) and the GH[...]

Op er atin g In st ruct io ns 3 7 GRASS HANDLING SYSTEM (GHS) GHS M ode l On ly G HS Flow a nd Co m po nen t s PTO and Blade Gear D rive PTO Cl ut c h Rear Di scharge Mower Deck Deck Discharge Chute Blower Bo d y C h u te Assembly Pow erfil ® Delivery S pout Grass Catc her Catcher Door Spring Catcher D oor Exhaust Defle ctor Exhaust Sc reen (R em [...]

Op er atin g In st ruct io ns 3 8 Ge n e r a l Inf o r m a t i o n The Grass Handling System (GHS) consists of a rear discharge mower deck con nected to a 10 in. (25 cm) blower and a rear mount ed grass catcher with 7.0 bushel (246 liters) capacity or optional 9.5 bushel (33 5 l iters) capacity . The GH S bl ower oper- ates a ny t ime the m ower bl[...]

Op er atin g In st ruct io ns 3 9 Clogging Checklist In cas e of clo gg ing, ther e will b e a di st in ct ch an ge in the sound of the bl ower , i.e., the blower sound will stop. A lso, the mower deck will begin to leave a trail of grass clipping s. When this occurs, s top the engine, disc onnect the spark plug wires, and make sure all moveme nt h[...]

Op er atin g In st ruct io ns 4 0 • Check that the o penings in th e remov able air exhaus t screen in the grass catcher a re not plugged. If t he screen is clogged, refer t o Cleaning the GHS Exhaust Scr een in th is sect ion . Remem ber , anything that rest ricts a irfl o w or materi a l flow along t he entire path from the m ower deck to the g[...]

Op er atin g In st ruct io ns 41 Dumping th e Catcher For dum ping , the catcher e ith er tailgate dum ps int o a disposal area or dumps in to the optional dump bag. T he d ump bag i s a reu sab le ny lon fabric ba g designed t o conveni entl y move gras s cl ipping s fr om the catc her to a remote disposal area or container . T a ilga te Dum pin g[...]

Op er atin g In st ruct io ns 4 2 3. Hook the b ottom o f the b ag over t he rear bumper while li fting on th e ha ndle s trap. 4. T ilt the catcher back to du mp into the bag by li ft- ing on the catcher lift handle on the lower front corner of the cat cher w ith t he one hand while continu ing to ho ld up on the bag st rap with th e othe r han d.[...]

Op er atin g In st ruct io ns 4 3 Power Dump Co mponent s Grass C atcher Cable Gu ide Catcher Door Gas Sp r in g Catcher Door C able Rod Gui de Cable A ssembly Actuator Mount Ass e mbly Dog Leg Assembly For k Lift Channel Door Actuato r Ar m Gas Spri ng Rubber Bum per Power Dump Ram Actuator[...]

Main tena nce In stru cti ons 4 4 MAINTENANCE SCHEDULE CH ART - RECOMMENDED SERVI CE INTERV ALS - MODEL MT Service I tem Daily 25 Hours 10 0 Hours 200 Hours Y early Every 2 Y ears Ref . Pag e Check Engine C rankcase Oil Level x 46 Check/Clean E ngine Air Cooling System * x 57 Check Secur ity of Air Filtration Component s x 60 Check Air Filter Restr[...]

Main tena nce In stru cti ons KOHLER TIPS 4 5 IMPORT ANT TIPS FOR CARE OF THE KOHLER ENGIN E Fuel S ystem • Fuel must be clean - free from water , dirt, and or- ganic m aterial. • Change f uel filter on a regular b asis and whe n contaminatio n is suspected or found in the fuel. Starting/ Stop ping • For starting in cold weat her [below 40 °[...]

Main tena nce In stru cti ons LUBRICATION 4 6 LUBRICA T ION Proper lu brication is a n important m aintenan ce pro- cedure. It redu ces wear a nd m akes the machi ne q ui- eter an d e asier to operate. En gi ne Oi l Engi ne Bre ak-I n Oil No specia l break-in oil is required. The engine is serviced with 10W-30, Service Class SG oil from the factory[...]

Main tena nce In stru cti ons LUBRICATION 4 7 1. Park the m ower on a level surface wi th the en - gine s to pp ed . The eng ine oil should be warm before draining. If not warm fr om operat ion, start the engine and run a few minutes to warm the o il. 2. Rem ove the dip st ick and the oil drain plug and drain the oil into a suitable container . B e[...]

Main tena nce In stru cti ons LUBRICATION 4 8 Ident Lubr icatio n N o . No. Locati on T yp e P lac e s Ident Lub r icatio n No. No. Locati on T y pe Place s 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 PTO Shaft Guard Hinge Oil 1 6 Universal Joint Shaft Ass[...]

Main tena nce In stru cti ons LUBRICATION 4 9 C hassis and De ck L ubrication Points[...]

Main tena nce In stru cti ons LUBRICATION 5 0 Mow er D eck Gearb ox Lubr ication NOTE: T hese ins tructions apply t o all m ower decks with gear-driven blades. Refer to DSD52 or DSD62 Mow er Deck L ub rication i n t h is se cti on fo r th e DSD52 or DSD62 de ck with b elt-driven b lades. The m ower deck gea rboxes (tee gearbox an d blad e drive gea[...]

Main tena nce In stru cti ons LUBRICATION 51 2. Chec k the o il lev el in the bel t d rive gearbo x ev- ery 100 h ou rs (or soo ner if a visib le oil leak has developed). With the deck in t h e normal oper- ating position, rem ove the level plug in the sid e of the gearcas e. Add SAE E .P . (Extreme Pres - sure) 90W oil to maintain the oil level to[...]

Main tena nce In stru cti ons LUBRICATION 5 2 Hyd rostati c T rans m iss io n Fl ui d Checking Hydrostatic T rans mission Fluid Le vel Hydrostatic transmissio n fluid level should be checked every 25 h ou rs of machine operation. It is preferable to check the fluid level when fluid is co ld . Check fluid level as f ol lows: 1. Park the mower on a l[...]

Main tena nce In stru cti ons LUBRICATION/CLEANING 5 3 3. Reinstall the lower drain plug, making sure th e rubber O-ring on t he plug is in p lace and i n good c ondition . 4. Refill the transm ission through t he air bleed plug hole until it is as full as possible. IMP ORT ANT : Avoi d fluid contam ination when filling t he reservoir . Use clean c[...]

Main tena nce In stru cti ons CLEANING 5 4 T u rb ine Precleaner The turbine prec leaner is mounted on a rem ote air intake tube con nected to the Donal dson air cleane r . A spinn ing fan driven by the intake airflow separates dust from t he air , giving th e initial stage of air cle an- ing. Dust particles are exhaust ed through a singl e small v[...]

Main tena nce In stru cti ons CLEANING 5 5 1. Release the top and bottom cover latches and remove t he air cle aner cover . W ash the cover and V acuat or™ va lve. Check that these com - ponents are in good condition. The V acua tor™ valve is subjec t to wear a nd d eterioration an d should be replaced yearl y or when damaged. The lips of the v[...]

Main tena nce In stru cti ons CLEANING 5 6 Kohler Air Cl eaner (Seco ndary) NOTE: The Kohler Air Cl eaner shoul d onl y be ser- viced more often than a yearl y interval if there are indications that the Dona ldson R adial sea l  (prima- ry) has failed. • Foam Precleaner An oi led, foam prec leane r s urrounds t he paper e le- ment of the Kohle[...]

Main tena nce In stru cti ons CLEANING 5 7 Air Filt er Reinst a llati on Eng in e C ool i ng S y st em Air Intake System T o prevent engine overheating and pos sib le engin e damage, clean grass clippings, chaff, and di rt from the rotating engine air intake screen after ever y 8 hour s of op erati on . In cert a in mowing cond itions (dry grass, l[...]

Main tena nce In stru cti ons CLEANING 5 8 Grass Buildup in Mower Housing Non-Tilting D ecks 1. Raise the de ck and secure it in the UP position by hoo king the deck lift rod i nto the body brac ket below the co unterweight s prin g cli p. The rod is hinged a nd i s s towed al o ng the f ootrest of th e deck carrier fr ame. A hitch pin on the en d [...]

Main tena nce In stru cti ons CLEANING 5 9 NOTE: Whil e some d egree of material buildup in the mow er deck housing can be t olerated , a point i s finally reached where cutting q uali ty deteriorat es and cloggin g begins to occ ur because o f too much buildup on t he baf fli ng and housing. 4. Lower the deck to the normal operating po sition and [...]

6 0 Main tena nce In stru cti ons CLEANING/ CHECKING/SERVICING Hy dro st atic T ra nsmi ssi on C ool in g Fi ns Keepin g the cooling fins on t he hydrostatic transmis- sions clea n and free of obstruction is es sential to avoid ov erhe ating the tr ansmission f luid and short - ening transm ission life. The cooling fins should be checked eve ry 100[...]

61 Main tena nce In stru cti ons CHECKING/SERV ICING 3. Replace f iller caps. IMPORT ANT : DO NOT overf ill t he b at tery . Ele ctro - lyte will overflow throug h t he vented caps onto parts of the ma chine an d WILL result in severe corrosi on. Cleaning the T erminal s If battery terminals are corroded, rem ove ba ttery from the mower. U sing a w[...]

Main tena nce In stru cti ons CHECKING/SERVICING 6 2 4. If the b lade cutting ed ge is dull or ni cke d , it should be sharpen ed. Re move bla des f or sharpening by g rasping the en d of th e blad e us- ing a rag o r a thick, padde d gl ove, whil e loos en- ing and rem oving the n ut, lock was her , and f lat washer that mounts the blade. 5. Grind[...]

6 3 Main tena nce In stru cti ons CHECKING/SERVICING/ REPL ACING/REPAIRING Mow er D eck Gearb ox Oil S eals The m ower deck gea rbox seals shoul d be inspected every 25 ho urs f or evidence of oil lea king; particu - larly the lo wer oi l seal on the blad e drive ge ar- box . This seal is prot e cted by the trash guard on t h e blade hub and seal p[...]

Main tena nce In stru cti ons REPL ACING/REPAIRING 6 4 Jacks h af t Drive Belt Engin e PTO Bel t GHS Blower Belt (GHS Model Onl y) Hydrostatic Ground Drive Belt B e lt L o c a t io n s[...]

Main tena nce In stru cti ons REPL ACING/REPAIRING 6 5 Engine P TO Drive Belt (3 Groove Power Band) 1. T o r e move t he engine PTO drive belt: a. Remove the jackshaft drive belt fr o m it s idler pulley (by pushing down on idl er pul- ley) and let the belt drop dow n out of the way . NOTE : S tep ( a) is n ot ess ential t o remo ving the P TO belt[...]

Main tena nce In stru cti ons REPL ACING/REPAIRING 6 6 Jacks haf t D r ive Be l t 1. T o remove t he jac kshaft d rive be lt: a. Remove the engi ne P TO drive belt, as described in prev ious section. Jacksh aft Drive Belt (Engaged) Jacksha ft Drive Belt (Disengaged) Push Idle r Pu lle y Do w n to R ela x Belt Idle r Pu lle y Engin e Pulle y T ensio[...]

Main tena nce In stru cti ons REPL ACING/REPAIRING 6 7 GHS Blower Drive Belt 1. Remove t he G HS blower d rive belt by un hook - ing the b elt tension spring from t he hook on the chassis frame (loc ated above the blower pul- ley). Lift the belt tightener i dler pul ley up and rol l belt off the pu lleys. Chassis Frame Hook Blower Pulle y Belt T ig[...]

Main tena nce In stru cti ons REPL ACING/REPAIRING 6 8 Hydrostatic Gr ound Drive Belt 1. T o r e move t he hydrostatic ground drive belt: a. Raise the spring-loaded be lt tightener arm and idler pulley to rel ax belt. b. Slide belt off pull eys, then release the idler . Hy dr ost at ic Ground Drive B elt Idle r P ulle y Belt Tightener A rm Jacks h [...]

Main tena nce In stru cti ons REPL ACING/REPAIRING 6 9 Fuel F ilter Model MT is equipped with an in-line fu el fil ter. Vi - sually inspect the filter periodically , and replace the filt er yearly . Fuel Filter Locatio n IMPORT ANT : Replace the f uel filter only in a clea n area where the fuel line and conne ctions will not b e contaminated by any[...]

Main tena nce In stru cti ons REPL ACING/REPAIRING 7 0 After re in st a lling th e blad e, che ck blade timing by moving blade s through one (1) complete revolu- tion . Make sure bl ade tips pass clear of eac h other . If timing is incorrect, refer t o Mower D e ck Gea rbox Replacem ent in this sectio n . Mow er B lades Mower blades are removed and[...]

Main tena nce In stru cti ons REPL ACING/REPAIRING 71 NOTE: Wit h oil flow thr oughout the uni tized gear drive assembly; if one gearbox has internal damage or exc ess i ve wear , the rem aini ng gear - boxes and con nector tubes should be com plete- ly di sassembled a nd thoroug hly f lushed out with solvent before reassembly . 5. Drain and prope [...]

Main tena nce In stru cti ons REPL ACING/REPAIRING 7 2 4. Remove t he blower assem bly from the c hassis as follows: a. Rem ove the bl ower skid bar b y removing front and rear mounting bolts f rom the skid bar (underneath the blower) and r e moving the bolt connec ting the blower housing to the skid bar . b. Rem ove t he blower belt t ightener idl[...]

7 3 Main tena nce In stru cti ons ADJUSTM ENTS ADJUSTMENT S Safety Switches There are three (3) saf ety interlock sw itches on th e tr ac tor . Us e th e p ane l n ut s on t h e s wit ch body to p o- sition the switch for proper activation of the switch. The adjustment procedure for each switch is: Seat S witch Adjust s witch position in bod y pane[...]

Main tena nce In stru cti ons ADJUSTM ENTS 7 4 Blade Cl utch (PTO) Clutch Engagem ent/Belt T en sion The clutch engag ement and PTO belt tension are adjusted usi ng the clutch actuato r rod. Initially , after installing a n ew PTO belt, after 10 h ours a nd ever y 100 hou rs thereafter , check and adjus t f o r the two dimensio ns i n the clutch ac[...]

Main tena nce In stru cti ons ADJUSTM ENTS 7 5 Clutch Disengag eme nt/Brake Action The d eclutch ed or diseng aged position of the blade clut ch idler pulle y is adju st a ble an d is set to give belt release w ithout excessi ve slack and to apply the blade brake. The blade brake is activated by the brake actuat or rod linkage t o the clutch idler [...]

Main tena nce In stru cti ons ADJUSTM ENTS 7 6 Use the f ollowing pr ocedures to chec k and adjust clutc h disengagem ent and brake action: S top Block Ecc entric A djustm ent - Step 1 Use the st op block attached t o PTO belt tightener arm t o set t he bo ttom position of t he clutch i dler p ul- ley in the di sen gaged posit ion. The stop block s[...]

Main tena nce In stru cti ons ADJUSTM ENTS 7 7 Blade Br ake Band Ad justmen t NOTE: The length of t he actuat or rod is adjuste d by dis connecting t he b ottom clevis and s hortenin g or lengt hening acc ordingly . T he standard pre-set length o f the actuator rod is set at the factory at 8-1/4 in. (209 mm). Brake Ac tuator Rod Adjustment 2. After[...]

Main tena nce In stru cti ons ADJ UST ME NT S 7 8 3. T ighten the jam nut on th e forward travel stop adjustin g bolt. Forwa rd S peed Co ntro l Stop and Steering Leve r Ad justment S teerin g Le ver E nd Play Adju stment - S tep 2 1. Position the FSC le ver to the m ost FORW ARD pos itio n . 2. Loosen the adjustment nut on each steerin g le- ver a[...]

Main tena nce In stru cti ons ADJUSTM ENTS 7 9 S traigh t Ground T rave l Adjustment - S tep 4 1. Sit in the seat, start the engine (operate at nor- mal speed), an d wi th the FS C in t he NE UTRAL- P ARK position check fo r forw ard movemen t of either drive wh eel (if either wheel m oves backwar d , refer b ack to Neutral Fu nction Ad- justm ent [...]

Main tena nce In stru cti ons ADJUSTM ENTS 8 0 Tilt-Up Deck Ad justable S top When the carrier frame hinge joint is properly adj u st- ed, the dec k lock le vers shou ld move in and out of the engaged and d isengaged pos itions freely . All four hitch pins used f or height adjus tment should sit flus h on the washers above the d eck pin bushing. On[...]

Main tena nce In stru cti ons ADJUSTM ENTS 81 2. Prelimina r y S etting: Turn the idle mixture nee- dle valve out (counterclockwise) 1-1 /2 turns from the closed position. This in iti al adjus t- ment wi ll allow the engine to be started and warmed up prior to t he final adjustment. Carb ur e tor A dj ust me n t 3. S tart the engine and allow it to[...]

8 2 Main tena nce In stru cti ons ADJUS TMENTS/ ELECT RI CAL S YST EM Checki ng th e Grass-P ak ® S w it ch Adjustme nt (When Horn Sounds at the Wrong Time) V e ry little, if any , adjustment to the Gras s-Pak ® switch is required . How ever , to fine tune th e timing of the full sign al, the vertical position of th e switch vane i s adjustable a[...]

8 3 Main tena nce In stru cti ons ELECT RI CAL S YST EM Wirin g Dia gram - Mo del MT[...]

8 4 Operator ’ s No tes[...]

8 5 Operator ’ s No tes[...]

8 6 Operator ’ s No tes[...]

8 7 LIMITED W ARRANTY FOR WA L K E R COMMERCIAL RIDER MOWER 1. W HA T THI S W ARRANTY COVERS , AND FOR HOW LONG: Walk e r Ma nu fa ct ur i ng co m pan y wi ll, at i ts o pti on , r e pai r or r e pl ac e, wit h ou t c ha rge , an y par t c o ve red by th is w arra nt y whi ch is fou nd to be def ec tive in mat eri al an d/o r wo rkma nshi p wit hin[...]

W ALKE R MF G . CO . • 5 925 E . HA RMO NY RO AD , F ORT CO LLIN S, CO 80 5 28 • (970) 221-56 14 FORM NO. 101298 PRINTED IN USA © 1998 W ALKER M FG . CO So und - Mode l MT2 0 So und T e st Soun d tes t cond ucte d was in acc ordanc e wit h 79/ 1 13/E EC an d was per for m ed on 22 Ma r ch 9 6 un de r th e co nd iti o n s li st ed: General Co n[...]