Exmark NAV20KC User Manual

Part No. 103-8573 Rev. B For Serial Nos. 510,000 & Higher

- 5 - DANGER POTENTIAL HAZARD ♦ Mowing on wet grass or steep slopes can cause sliding and loss of control. WHAT CAN HAPPEN ♦ Wheels dropping over

- 6 - 1.4.7 Never operate the mower with damaged guards, shields, or covers. Always have safety shields, guards, switches, and other devices in pl

- 7 - 1.5.3 Allowing batteries to stand for an extended period of time without recharging them will result in reduced performance and service life.

- 8 - 1.6 SAFETY SIGNS 1.6.1 Keep all safety signs legible. Remove all grease, dirt and debris from safety signs and instructional labels. 1.6.

- 9 - HOTSURFACE65-2690WARNING LOCATION: Molded into front of hopper PART NO. 103-8812 LOCATION: On RH Console PA

- 10 - 2. SPECIFICATIONS 2.1 MODEL NUMBER: NAV20KC, NAV27KC 2.2 ENGINE: 2.2.1 Engine Specifications: See your Eng

- 11 - 2.4.6 Safety Interlock System: PTO must be disengaged, brake engaged, and speed control lever in neutral position to start engine. (It

- 12 - 2.8 TIRES Drive Front Caster Rear Caster Pneumatic (Air-Filled) Semi-Pneumatic Semi-Pneumatic Quantity 2 2 1 Tread Multi Trac C/S Smooth

- 13 - 3.2.1 Check the voltage of the battery with a digital voltmeter. Locate the voltage reading of the battery in the table below and charge the

- 14 - 3.6 SERVICE HYDRAULIC OIL The machine is shipped with hydraulic oil in the reservoir. Run the machine for approximately 15 minutes to al

- i - WARNING POTENTIAL HAZARD ♦ This product is a piece of power equipment. WHAT CAN HAPPEN ♦ Failure to follow safe operating practic

- 15 - Run unit at 3/4 speed for at least 5 minutes to bring hydraulic oil up to operating temperature. Stop machine and wait for all moving part

- 16 - With a 7/16 wrench, turn both valves one turn counter-clockwise to release drive system. Turn clockwise to reset system. DO NOT overtight

- 17 - DANGER POTENTIAL HAZARD ♦ An uncovered discharge opening will allow objects to be thrown in an operator’s or bystander’s direction. Also, c

- 18 - FIGURE 2 DISABLING HOPPER AUTO DOOR OPEN 4.3.7 Clearing Hopper Screen: a) Screen may be removed by firmly lifting screen ha

- 19 - CAUTION POTENTIAL HAZARD ♦ This unit does not have proper turn signals, lights, reflective markings, or a slow moving vehicle emblem.

- 20 - 5. MAINTENANCE & ADJUSTMENTS WARNING POTENTIAL HAZARD ♦ While maintenance or adjustments are being made, someone could start the engine.

- 21 - a) Check the voltage of the battery with a digital voltmeter. Locate the voltage reading of the battery in the table below and charge the

- 22 - b) Check the kill circuits. Run engine at one-third throttle, disengage parking brake and raise off of seat (but do not get off of machin

- 23 - 5.1.8 Check hydraulic oil level: Service Interval: 40 hr. a) Stop engine and wait for all moving parts to stop. b) Tilt ho

- 24 - c) Lubricate caster pivots once a year. Remove hex plug and cap. Thread grease zerk in hole and pump with grease until it oozes out a

- ii - EXMARK PARTS PLUS® PROGRAM EFFECTIVE DATE: September 1, 1995 Program If your Exmark dealer does not have the Exmark part in stock, Exmark w

- 25 - 5.1.14 Lubricate hopper actuator: Service Interval: 160 hrs. a) Stop engine, wait for all moving parts to stop, and remove

- 26 - 5.1.19 Check spark plugs: Service Interval: 160 hrs. a) Remove spark plugs, check condition and reset gaps, or replace with n

- 27 - 5.1.22 Wheel Hub – slotted nut torque specification Service Interval: 500 hrs When tightening the slotted nut on the wheel motor tape

- 28 - i) Engage the PTO lever. j) Loosen the jam nuts and adjust linkage as shown in Figure 9 until the pointer is aligned with the tension

- 29 - 5.2.5 Adjust Seat Switch a) If necessary, adjust the seat actuator rod length to where the machine will shut off when the operat

- 30 - FIGURE 13 THROTTLE TENSION 5.2.8 Adjust Speed Control Lever Tension a) Stop engine, wait for all moving parts to stop, and

- 31 - CAUTION POTENTIAL HAZARD ♦ Raising the mower deck for service or maintenance relying solely on mechanical or

- 32 - FIGURE 16 TRACKING ADJUSTMENT h) Move the steering levers to the reverse position. While applying slight pressure to the lever

- 33 - c) Lift the seat and locate the pump control springs. To increase responsiveness, increase spring tension by hooking the rear spring anch

- 34 - j) Tighten the 4 engine mounting bolts and 4 jackshaft mounting bolts. Check alignment after tightening. k) Re-install pump belt t

-iii- CONGRATULATIONS on the purchase of your Exmark mower. This product has been carefully designed and manufactured to give you a maximum amou

- 35 - Door Opening: a) Locate the hopper door cables. Loosen the jam nut next to the yoke at the end of the hopper door cable/shaft assembly

- 36 - 6.2 MERCURY SWITCH DISPOSAL CAUTION POTENTIAL HAZARD ♦ The mercury contained in the tilt switch is poisonous. WHAT CAN HAPPEN ♦

- 37 - 7. TROUBLE SHOOTING 7.1 MOWER PULLS LEFT OR RIGHT (W/LEVERS FULLY FORWARD). a) Refer to Tracking Adjustment Section 4.1.3. b) Check air

- 38 - ENGINE TROUBLESHOOTING TABLE PROBLEM NO FUEL IMPROPER FUEL DIRT IN FUEL LINE DIRTY AIR FILTER FAULTY SPARK PLUG ENGINE OVERLOADED BLOCKED FUEL

- 39 - 8. ELECTRICAL DIAGRAM

- 40 - 9. HYDRAULIC DIAGRAM

- 41 - 10. 2-Year Limited Warranty Exmark Turf Equipment (For units purchased o

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®MFG. CO. INC. SEE EXMARK’S COMPLETE LINE OF ACCESSORIES RIDING ACCESSORIES CUSTOM RIDE SEAT SUSPENSION SYSTEM DECK LIFT ASSIST KIT HITCH KIT LIGHT

- iv - TABLE OF CONTENTS 1. SAFETY PAGE 1.1 Safety Alert Symbol...

- 1 - 1. SAFETY 1.1 SAFETY ALERT SYMBOL This SAFETY ALERT SYMBOL is used both in this manual and on the machine to identify important safety me

- 2 - 1.3.4 Thoroughly inspect the area where the equipment is to be used and remove all stones, sticks, wires, bones, and other foreign objects wh

- 3 - DANGER POTENTIAL HAZARD ♦ In certain conditions gasoline is extremely flammable and highly explosive. WHAT CAN HAPPEN ♦ A static char

- 4 - 1.4 OPERATION Although hazard control and accident prevention are partially dependent upon the design and configuration of the equipment, th