Exmark 850 manual

NA VIGA TOR ® For Serial Nos. 850,000 & Higher Part No. 4500-628 Rev . B[...]

W ARNING CALIFORNIA Proposition 65 W ar ning The engine exhaust from this product contains chemicals known to the State of Califor nia to cause cancer , birth defects, or other reproductiv e har m. Important: The engine in this product is not equipped with a spark arr ester mufer . It is a violation of Califor nia Public Resource Code (CPRC) Sec[...]

Introduction CONGRATULATIONS on the purchase of y our Exmark Mow er . T his product has been carefully designed and manufactured to giv e you a maximum amount of dependability and years of trouble-free operation. This man ual contains operating, maintenance, adjustment, and safety instr uctions for your Exmark mow er . BEFORE OPERATING Y OUR MO WER[...]

Contents Introduction .. . . .. . . .. . . .. . . .. . . .. . . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. 3 Safety .. . . .. . . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . . .. . . .. . . .. . . .. . . .. . 5 Safety Alert Symbol . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. . 5[...]

Safety Safety Safety Alert Symbol This Safety Alert Symbol (Figure 2) is used both in this man ual and on the mac hine to identify important safety messages which m ust be follow ed to av oid accidents This symbol means: ATTENTION! BECOME ALERT! Y OUR SAFETY IS INV OL VED! Figure 2 1. Safety alert symbol The safety alert symbol appears abo ve infor[...]

Safety DANGER In certain conditions gasoline is extremely ammable and v apors are explosi v e. A re or explosion from gasoline can bur n y ou, others, and cause proper ty damage. • Fill the fuel tank outdoors on lev el gr ound, in an open area, when the engine is cold. W ipe up an y gasoline that spills. • Never rell the fuel tank or d[...]

Safety • Check that the operator’ s presence controls , safety switc hes , and shields are attached and functioning properly . Do Not operate unless they are functioning properly . Operation W ARNING Operating engine parts, especially the mufer, become extremely hot. Sev ere bur ns can occur on contact and debris, such as leav es, grass, br [...]

Safety • Stop engine, w ait for all moving parts to stop , and engag e parking brake: – Before refueling . – Before dumping the grass catc her . W ARNING Hands, feet, hair , clothing , or accessories can become entang led in rotating par ts. Contact with the rotating par ts can cause traumatic amputation or sev ere lacerations. • Do Not ope[...]

Safety • A void sudden star ts when mowing do wnhill. Mow er may tip forwards . • Be aw are that operating on wet g rass , across steep slopes or downhill ma y cause the mo wer to lose traction. Loss of traction to the driv e wheels ma y result in sliding and a loss of braking and steering . • Alwa ys av oid sudden starting or stopping on a s[...]

Safety CAUTION If the ignition is in the “ON” position there is potential for sparks and engagement of components. Sparks could cause an explosion or mo ving parts could accidentally engage causing personal injur y Be sure ignition s witch is in the “OFF” position before charging the batter y . • Keep all guards , shields and all safety d[...]

Safety Safety and Instructional Decals • Keep all safety signs legible . R emov e all grease, dirt and debris from safety signs and instructional labels . • R eplace all w or n, damaged, or missing safety signs . • When replacement components are installed, be sure that cur rent safety signs are afx ed to the replaced components . • If a[...]

Safety 103-9034 103-9724 109-4273 109-4638 109-7318 1 16-0404 12[...]

Safety 1 16-1 175 1 17–2718 Molded in LH Console Molded into Front of Hopper 13[...]

Specications Specications Model Numbers Serial Nos: 850,000 and Higher NA V20K C; NA V27K C Systems Engine • Engine Specications: See y our Engine Owner’ s Manual • RPM: Full Speed: 3600 ±50 RPM (No Load) Idle: 1500 RPM Fuel System • Capacity: 7.5 gal. (28 L) • T ype of Fuel: R egular unleaded gasoline, 87 octane or higher; cont[...]

Specications • Hydraulic Oil T ype: Use Exmark Premium Hydro oil. • Hydraulic Oil Capacity: 4.0 qt. (3.8 L) • Hydraulic Filter : R eplaceable cartridg e type . – Summer use abov e 32°F (0°C): P/N 109-0071: 25 microns , 10 psi b ypass – Winter use below 32°F (0°C): P/N 1-523541: 40 microns , 18 psi b ypass • Speeds: – 0-7.0 mph [...]

Product Overview Curb Weight: 42 inch Deck 48 inch Deck 850 lb (386 kg) 1145 lb (519 kg) T orque Requirements Bolt Location T orque Blade Mounting Bolt 85-110 ft-lb (115-149 N-m) Engine Mounting Bolts 30-35 ft-lb (41-47 N-m) Wheel Lug Nuts 90-95 ft-lb (122-129 N-m) Wheel Motor Mounting Bolts 72-77 ft-lb (98-104 N-m) Wheel Hub Locknut 210-250 ft-lb [...]

Operation Operation Note: Deter mine the left and right sides of the machine from the nor mal operating position. Controls Steering Levers Located in the center in front of the seat. Pulling back on the steering lev ers , progressively slows , then rev erses the direction of trav el of the respectiv e dri ve wheels . By moving both steering levers [...]

Operation Drive Wheel Release V alves Located on the top left front corner of h ydrostatic pumps . Driv e wheel release v alves are used to release the hy drostatic driv e system to allow the machine to be pushed without the engine r unning . Tilt seat up to gain access to pumps . With a 7/16 wrench, turn both v alves one turn counterclockwise to r[...]

Operation 6. T urn ignition switch to the “ST AR T” position. R elease the switch as soon as the engine starts . Important: Do Not crank the engine continuously for more than ten seconds at a time. If the engine does not star t, allow a 60 second cool-down period betw een star ting attempts. F ailure to follow these guidelines can bur n out the[...]

Operation T o turn left or right, pull one of the steering lev ers back tow ard neutral in the direction desired. The mac hine will mo ve faster the farther the speed control lev er is mo ved aw ay from neutral. 4. T o stop , pull the speed control lev er back to the neutral position. Driving in Rev erse 1. T o mov e rearward in a straight line app[...]

Operation W ARNING Loading a unit on a trailer or tr uck increases the possibility of tip-o ver . Tip-ov er could cause serious injur y or death. • Use extreme caution when operating a unit on a ramp . • Use only a single, full width ramp; Do Not use individual ramps for each side of the unit. • If individual ramps must be used, use enough ra[...]

Maintenance Maintenance Note: Deter mine the left and right sides of the mac hine from the nor mal operating position. W ARNING While maintenance or adjustments are being made, someone could star t the engine. Accidental star ting of the engine could seriously injure y ou or other bystanders. Remo ve the k ey from the ignition s witch, engage parki[...]

Maintenance Maintenance Ser vice Inter v al Maintenance Procedure Monthly • Check the battery c harge. Y early • Lubricate g rease ttings . • Lubricate the caster wheel hubs . Periodic Maintenance Check Engine Oil Level Service Interval: Before each use or daily 1. Stop engine and wait for all mo ving parts to stop . Make sure unit is on a[...]

Maintenance CAUTION Cor rosion or loose connections can cause unw anted electrical v oltage spikes at an ytime during the jump star ting procedure. Do Not attempt to jump start with loose or cor roded batter y ter minals or damage to the engine may occur . DANGER J ump starting a weak batter y that is crack ed, frozen, has low electrolyte level, or[...]

Maintenance speed control lev er in the neutral position. The operator does not need to be in the seat to start the engine. T ry to start with operator in seat , parking brake disengaged , PTO disengaged and speed control lever in the neutral position - star ter must not crank . T ry to start with operator in seat , parking brake engaged , PTO enga[...]

Maintenance 6. Clean around oil ll cap and remo ve cap . Fill to specied capacity and replace cap . 7. R emov e drain hose , close fuel tank, and lo wer hopper . 8. Use oil recommended in engine o wner’ s man ual. Do Not ov erll. Start the engine and c heck for leaks . 9. Wipe up any spilled oil from engine dec k mounting surfaces . Chec[...]

Maintenance Lubrication Chart Fitting Locations Initial Pumps Number of Places Ser vice Inter v al 1. Caster Piv ot *0 3 *Y early 2. PTO Idler 1 1 Y early 3. Pump Idler 1 1 Y early 4. Rear Caster Hub *0 1 *Y early * See step 3 for special lubrication instr uctions on the front and rear caster pi vots and the Lubricate Rear Caster Wheel Hubs section[...]

Maintenance 11. Insert the second bearing and new seal into the wheel. 12. Apply a thread loc king adhesiv e to the 2nd spacer nut and thread onto the axle with the wrench ats facing outward. 13. T or que the n ut to 75-80 in-lb (8-9 N-m), loosen, then re-tor que to 20-25 in-lb (2-3 N-m). Make sure axle does not extend beyond either n ut. 14. R [...]

Maintenance Change Hydraulic System Filter Service Interval: After the rst 250 hours Every 500 hours/Y early (whichever comes rst) thereafter (Every 250 hours/Y early if using Mobil 1 15W50) Note: Use only Exmark P art No . 109-0071 for Summer use abov e 32°F (0°C) or P/N 1-523541 for Winter use belo w 32°F (0°C). (R efer to the Hydrostat[...]

Maintenance Fuel tank studs , where studs are inserted into tank. Dielectric Grease Dielectric grease is used on all blade type electrical connections to prev ent cor rosion and loss of contact. Adjustments Note: Disengag e PTO , shut off engine, w ait for all moving parts to stop , engag e parking brak e, and remov e k ey before ser vicing, cleani[...]

Maintenance 10. R e-install clevis pin and hairpin to secure brak e band. 11. Engag e the PTO lev er . 12. Loosen the jam nuts and adjust linkage until the top of the idler arm is aligned with the bottom of notch on tension ar m as sho wn in Figure 10. Figure 10 1. T ension Arm 2. Loosen jam nuts 3. When PT O is engaged, align top of idler arm with[...]

Maintenance Adjust Safety Switch Adjust all safety switc hes so plunger extends 3/16 inch to 1/4 inc h (4.8 mm-6.4 mm) from switc h body when plunger is compressed (see Figure 13). Figure 13 1. 3/16 inch to 1/4 inch (4.8 mm-6.4 mm) Brake Adjustment Check to make sure each brak e is adjusted properly . 1. Pull the brake lev er up and back to the eng[...]

Maintenance loose enough to be mov ed comfortably by the operator . Figure 16 1. Speed Control Lever 3. Spring disc washers 2. Friction Plate 4. Hex locknut Speed Control Linkage Adjustment W ARNING Engine must be r unning and dri ve wheels must be tur ning so motion control adjustment can be perfor med. Contact with moving par ts or hot surfaces m[...]

Maintenance across the ter minals in the connector of the wiring harness. 3. Start the engine . 4. R un the unit at least 5 min utes with the speed control lev er at full forward speed to bring hy draulic system oil up to operating temperature. R eturn speed control lev er to neutral (full rear) position. 5. T o obtain the neutral position, adjust [...]

Maintenance Figure 20 1. T o increase steering responsiveness hook pump control sprints directly on anchor bolt. T o decrease steering responsiveness hook pump control springs on anchor tabs as shown. T racking Adjustment See Motion Control Linkage Adjustment section PT O Drive Pulley Alignment PTO dri ve pulley alignment is necessar y for any of t[...]

Maintenance Rear Caster Pivot Bearings Pre-Load Adjustment R emov e dust cap from caster and tighten nyloc nut until w ashers are at. Back off 1/4 of a turn to properly set the pre-load on the bearings . If disassembled, make sure the spring disc washers are reinstalled as sho wn in Figure 22. Figure 22 1. Spring disc washers Hopper Door Adjustm[...]

Maintenance Cleaning Clean Engine and Exhaust System Area Service Interval: Before each use or daily (May be required more often in dry or dirty conditions.) CAUTION Excessi ve debris around the engine cooling air intak e and inside of the pump driv e belt compar tment and damaged or missing r ub ber bafes can cause the engine and hy draulic sys[...]

T roubleshooting T roubleshooting Important: It is essential that all operator safety mechanisms be connected and in proper operating condition prior to mow er use. When a problem occurs , do not o verlook the simple causes . F or example: starting problems could be caused by an empty fuel tank. The follo wing table lists some of the common causes [...]

T roubleshooting Problem Possible Cause Cor rectiv e Action 1. Engine load is ex cessive . 1. Reduce the ground speed. 2. Oil level in the crankcase is low . 2. Add oil to the crankcase. Engine ov erheats . 3. Cooling ns and air passages for the engine are plug ged. 3. Remove the obstructions from the cooling ns and air passages . 1. Trac kin[...]

Schematics Schematics Electrical Diagram ENGINE ENGINE OVERHEA T BUZZER ENGINE O VERHEA T LED ACCESSOR Y PLUG CLOSED WITH HOPPER DOWN SWITCH IS CLOSED WITH OPERA TOR IN SEA T TEMP SWITCH SEA T DELA Y MODULE CONTROL SEA T SWITCH BA TTER Y GROUND SEA T DELA Y MODULE INPUT HOPPER SWITCH BLACK ORANGE ORANGE PINK PINK ORANGE ORANGE PINK ORANGE PINK T AN[...]

Schematics Electrical Logic Schematic BLACK BLACK ACCESSOR Y PLUG ORANGE BLACK RED L T. BLUE BLACK VIOLET WIPER MOT OR HOPPER FILL SWITCH S P + BUZZER M BLACK L T. BLUE BLACK L T. BLUE BRO WN SEA T SWITCH BA TTER Y (+) 12V RED BRO WN ORANGE PINK PINK ORANGE ORANGE ORANGE DK. BLUE S P + TEMP SWITCH BUZZER ORANGE ORANGE PINK PINK ENGINE OVERHEA T LED[...]

Schematics Hydraulic Diagram G006950 CASE DRAIN CHARGE PUMP HIGH PRESSURE BYP ASS V AL VE BYP ASS V AL VE HIGH PRESSURE FOR W ARD HIGH PRESSURE FOR W ARD HIGH PRESSURE REVERSE HIGH PRESSURE REVERSE 42[...]

Conditions and Products Co vered Exmark Mfg. Co. Inc. and its aff iliate, Exmark W arranty Company , pursuant to an agreement between them, jointly warrant on the terms and conditions herein, that we will repair , replace or adjust any part on these products and found by us (in the ex ercise of our reasonable discretion) to be defect i ve in factor[...]

Notes: 44[...]

Service Record Date: Description of Work Done: Service Done By: 45[...]

46[...]

G01 1841 Figure 25 This page may be copied for personal use. 1. The maximum slope you can safely operate the machine on is 15 degrees . Use the slope indicator to determine the degree of slope of hills before operating. Do Not operate this machine on a slope greater than 15 degrees. Fold along the appropriate line to match the recommended slope. 2.[...]

MID-MOUNT RIDING A CCESSORIES AND OPTIONS SEE EXMARK’S COMPLETE LINE OF A CCESSORIES AND OPTIONS W ALK-BEHIND A CCESSORIES AND OPTIONS GRASS CA TCHER MICRO-MULCH SYSTEM TURF STRIPER ST ANDON CUST OM RIDE SEA T SUSPENSION SYSTEM FULL SUSPENSION SEA T DECK LIFT ASSIST KIT HITCH KIT LIGHT KIT 12 V PO WER PORT MICRO-MULCH SYSTEM OPERA T OR CONTROLLED[...]