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Operator’s Manual for
MODELS: ZKH52223
ZKH52253
ZKH61253
ZKHP52233
ZKHP52253
ZKHP61253
ZKW52233
ZKW61233
Professional Quality Lawn Care Equipment
since 1945
Thank you for buying a YAZOO/KEES ZT Max! Before operating your new mower, read,
understand and follow the important safety instructions and the other instructions con-
tained in this manual. Lawnmowers and all power equipment, can be potentially danger-
ous if used improperly. SAFETY REQUIRES GOOD JUDGEMENT, CAREFUL USE IN
ACCORDANCE WIT
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Congratulations on the purchase of your Yazoo/Kees mower. This manual has been pre- pared for the owners and operators of the ZT MAX™ 52" and 61" commercial mowers. Read, understand and follow the saftey and operating instructions. ! WARNING Failure to follow cautious operating practices can result in serious injury to the operator or other persons. The owner must understand these instructions, and must allow only trained persons who understand these instructions to operate the mower. Each per
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TABLE OF CONTENTS SAFETY: MAINTENANCE: 1. Training 1. Engine oil level 2. Preparation 2. Pump drive belt compartment 3. Operation 3. Mower blades 4. Transportation 4. Safety interlock system 5. Maintenance 5. Hardware 6. Air cleaner SETUP AND ADJUSTMENTS: 7. Engine oil 1. Park brake 8. Hydraulic oil 2. Cutting height 9. Tire presure 3. Mower deck leveling 10. Battery 4. Mule drive belt tension 11. Belts 5.Throttle lever tension 12. Lubrication 6. Reverse spring detent adjustment 13. Fuel filter
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SAFETY TRAINING: 1. Read this manual carefully and question your dealer if something is not clear. 2. Be thoroughly familiar with the controls and proper use of the equipment. 3. Never allow children, teenagers, or people unfamiliar with these instructions to use the mower. 4. Do not mow while people, particularly children, or pets are nearby. PREPARATION: 1. The use of personal protective equipment such as (but not limited to) protection for the eyes, ears, feet and head is recommended. 2. Neve
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SAFETY 14. Do not operate in an unsafe manner. Use caution when making maneuvers. Sharp cornering, turning & slopes can be unsafe if caution isn’t used. TRANSPORTATION: Use a heavy duty trailer to haul mower. Set park brake, turn off fuel valve and strap mower to trailer. NOTE: Park brake will not hold mower in place when transporting. Be sure to tie down the mower to the trailer. Always back onto the trailer to prevent possible tipover. 1. Keep all nuts, bolts and screws tigh
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EQUIPMENT SETUP AND ADJUSTMENTS 1. Uncrate mower 2. Mount drive wheels using the four lug nuts installed on the hub. 3. Check tire pressure in all four tires. Pressure for all four tires is 15 psi 4. Remove the motion control levers and install on the outside of the control arms (See figure 1). Tabs on the motion control levers should be directed to the rear of the mower. Align the levers so they are even in the neutral position. (See figure 6) 5. Install seat rod to the seat frame with 5
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ADJUSTMENTS PARK BRAKE: 1. Stop engine and remove key. Release park brake and measure the length of the spring. The distance between the washers on each end of the spring should be 2-7/8" (See Fig 2 ). 2. If adjustment is needed, loosen the nut below the spring. Then rotate nut to desired position so the proper distance between the washers is obtained. Check other side for proper adjustment. 3. Engage the brake lever and measure the distance between the trunnion pin and the collar welded to
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ADJUSTMENTS Figure 3 MULE DRIVE BELT TENSION: 1. Stop engine and remove the key. 2. Check to make sure the bolt head in the spring loaded idler pulley, on the left side of the engine deck is positioned between the two alignment holes in the left support plate (See Fig 4). 3. If adjustment is necessary, loosen the adjustable idler pulley on the right hand side of the engine deck so it can move up and down in the slot. Place a wrench on the 3/8" nut in the center of the spring loaded idler pulley
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ADJUSTMENTS 5. If adjustment is necessary, loosen the nut against the yoke. Apply slight rearward pres- sure to the motion control lever and turn the head of the adjustment bolt in the proper direc- tion until the lever is centered in the neutral slot. NOTE: if properly adjusted the motion control levers will return to neutral from the reverse position and reverse motion will stop if levers are released. Figure 5A Figure 5B 9
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ADJUSTMENTS MOTION CONTROL LINKAGE ADJUSTMENT: 1. This adjustment must be made with the drive wheels rotating. Raise rear of the unit and block it up so the wheels are free to rotate. CAUTION: Keep hands, feet and clothing away from rotating tires. 2. Tilt seat forward and remove the seat rod from seat so the seat can rotate down onto the frame. Make sure the seat is adjusted toward the rear of the unit so it clears the controls on the console. 3. Place a 2x4 board approximatly 10 to 12 inches l
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OPERATING INSTRUCTIONS NOTE: To begin motion the operator must be in the seat and the brake disengaged before the levers can be moved from the neutral slots or the engine will kill. By moving the levers an equal amount forward or back the mower will move in a straight line in that direction. Movement of the right lever forward will cause the right wheel to rotate in a forward direction. Movement of the left lever forward will cause the left wheel to rotate in a forward direction. To stop forwar
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OPERATING INSTRUCTIONS STARTING AND OPERATION: 1. Operator must be sitting in the seat. Engage park brake, blades off and place the motion control levers in the neutral slots. (See figure 6) 2. Adjust throttle to 1/2 and set choke (if needed) turn key and release as soon as engine starts. 3. Release park brake. 4. Close motion control levers. 5. Engage blades and set RPM to maximum. NOTE: Be sure all persons are clear of area before engaging the blades. To prolong spindle bearing and belt life e
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MAINTENANCE 1. Engine oil level: Check daily with engine cold and on a flat surface. Remove the dipstick and wipe clean. Reinsert the dipstick all the way. Remove the dipstick and check oil level. If oil level is low remove oil fill cap and add oil. Use engine manufacturers specs for type of oil. 2. Pump drive belt compartment: Stop engine and remove key. Tilt seat forward and lift rubber flap. Clean all debris from inside. Inspect rubber flap for proper fit and replace if needed. NOTE: Cleaning
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MAINTENANCE 9. Tire pressure: Check every 25 to 50 hours. All four tires require 15 psi. 10. Battery: Check every 25 hours. Check electrolyte level. If needed fill to the full line marked on the side of the battery. Fill with distilled water. Do not try starting the engine with a weak battery. Recharge or replace the battery. The engine condensers and electronic iginition can be damaged internally with less than or more than the required 12 volts. 11. Belts: Check every 25 hours. Stop engine
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SPECIFICATIONS Engine: . . . (Ref. see Kohler Manual) Mower Specifications: Power (@3600 rpm): Engine: Kohler Command V-Twin CH22 . . . . . . . . . 16.4 kW (22hp) Horsepower: 22 or 25 CH25 . . . . . . . . . 18.6 kW (25hp) Models: CH22S OR CH25S Peak Torque: Decks: 52” or 61” CH22 . . . . . . . . . 45 N*m (33 ft.lbs.) Cutting Height: 1.5” to 5.0” in 1/2” increments CH25 . . . . . . . . . 53 N*m (39.5 ft.lbs.) (38mm to 127mm in 13mm increments) Bore Blades: 18” - 52” deck CH22 . . . . . . .
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TROUBLE SHOOTING PROBLEM POSSIBLE CAUSES 1. Blade switch on. Engine won’t start 2. Drive levers not in the neutral slots. 3. Operator not in seat. 4. Park brake disengaged. 5. Dead battery or cable off. ....(Ignition switch left on) 6. Fuel valve closed or in the wrong position. 7. No fuel. 8. Spark plug wires off. 9. Bad spark plugs. Mower will not move 1. Park brake on. 2. Pump bypass valves open. or moves slowly or hard 3. Pump drive belt loose or off. 4. Hydraulic system failure. 5. Ai
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WIRING DIAGRAM 17
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SERVICE RECORD DESCRIPTION OF WORK DONE SERVICE DONE BY DATE 18
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Yazoo/Kees Limited Two Year Warranty 1. This Limited two-year Warranty is issued by Yazoo/Kees Power Equipment, only to the original purchaser. The warranty period is limited to ninety (90) days when product is or has been used for rental purposes. 2. Yazoo/Kees warrants that all new equipment manufactured by Yazoo/Kees (Yazoo/Kees Products), listed in paragraph 9 hereof, shall be free of defects in material and workmanship for the term described in paragraph 4 below. Component parts, equipmen
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b. Normal maintenance services and normal maintenance items such as brakes, brake shoes, spark plugs, oil, air filters, mower blades, gauge wheels, skids and other wear items. c. Any Yazoo/Kees Product which had been altered or modified in any way. d. Any repair or replacement caused by customer neglect or lack of maintenance. (The purchaser is responsible for making sure that Yazoo/Kees Products are operated and serviced as directed in the applicable manual or service instruction. Incorrect u
