~/~ ~ -C11(' ~ H ROtARY MOWER K40,~ K46 Operator's Manual 9-51560 Written In Clear And Simple English 1\ \ J I Case A Tenneco Company
r----. IF THIS MACHINE IS USED BY AN EMPLOYEE OR IS LOANED OR RENTED, MAKE ABSOLUTELY CERTAIN THAT THE OPERATOR(S), PRIOR TO OPERATING: 1. fS fNSTRUCTED fN SAFE AND PROPER USE. 2. REVfEWS AND UNDERSTANDS THE MANUAL(S) PERTATNfNG TO THE I\1ACHfNE.
SAFETY MESSAGES A h . . Regard your lotary mower as
, h. . . A A m rn A A CAUTION: Give complete and undivided attention to the job at hand. - CAUTION: Stop engine, disengage attachment drive, set parking brake and remove key when tractor is unattended. rn CAUTION: Do not allow anyone other than the operator to ride on the tractor. A CAUTION: Stop and inspect the mower for damage immediately af ter striking a foreign object and repair damage before restarting and operating the machine. A DANGER: Spinning Blade. Keep clear. Contact can injure.
HILLSIDE (SLOPE) OPERATION Avoid operating tractor on hillsides and slopes. To mini· mize the possib ility of accidents while operating on hills and/or rough terrain, obey a combination of rules, prac· tices and good common sense. Read, Understand, Obey: Safety messages are found on the tractor and in the op erator's manuals. These l!ll:!.U be understood by the trac !QLfmerator to be of value.
Always drive in a forward direction when proceeding downhill. Never drive up a hill. If necessary, back up a hill to the desired position. Always back up loading ramps and tilt bed trailers. If necessary to turn while on a hill, always turn downward . Adding an attachment (weight) to the rear of the tractor reduces the weight on the front axle . Adding an attach ment (weight) to the front of the tractor reduces weight on the rear of the tractor.
INTRODUCTION This operator's manual is for the Model K40, K44, and K46 rotary mower. This operator's manual includes: Read this manual before operating your rotary mower. See your J I Case dealer for parts or repairs. a. Safety Rules b. Installation Procedure c. Operating Procedure The words "Right, Left, Front and Rear" as used in this manual indicate directions when you are in the operator's seat in the normal operating position. d. Adjustments e.
OPERATING CONTROLS ATTACHMENT CLUTCH LEVER The rotary mower is started and stopped with the attach ment clutch lever. See your tractor operator's manual for correct use of your tractor controls . HEIGHT SELECTOR LEVER See your tractor operator's manual for correct use of your tractor controls . The cutting height is controlled by the height selector lever. ATTACHMENT LIFT LEVER The rotary mower is raised and lowered with the attach ment lift lever.
TO GET ON THE TRACTOR FROM THE RIGHT SIDE: A a. put your right foot on the right foot rest b. put your right hand on the steering wheel c. put your left hand on the seat back Be eel tJIIl whoever operdtes till' Illowel has I ead and undel stands the Safety Rules III the flOllt of this manual. 7 . Lower the lawnmower to the cutting position . Make sure the lift arms are located in the center of the slots in the lift links . This permits free movement of the lawnmower. d .
CONDITION METHOD 2. Long or thick grass. 2. a. move the height selector lever to the highest posi tion. b. increase engine speed to the "FULL THROTTLE" position . c. reduce ground speed. d. cut long or thick grass twice. e. operate with the chute facing the cut area. 3. Wet grass. 3. a. do not cut wet grass. 4. Rough terrain. 4. a. raise the mower into the transport position . b. put the gauge wheels in the "M" position . c.
ADJUSTMENTS FIGURE 4 A 2. Reduce ground speed. CAUTION: Disengage attachment drive lever, stop engine and remove key and spark plug vvlre(s) before making adjustments. DRIVE BELT TENSION. (See Figure 5.) The belt tension is correct when the gap between spring coils is equivalent to one wire diameter. HEIGHT SELECTOR LEVER. (See Figure 4.) You can adjust the lawnmower height with the height selector lever. TO INCREASE BELT TENSION : Turn the adjusting han dle counterclockwise.
3. Measure the distance from the blade ends to the level surface. Make sure you measure as near the blade end as possible. LAWNMOWER FRONT TO REAR LEVEL. (See Figure 6.) Smooth cutting and minimum horsepower consumption are a result of a level rotary mower. The lawn mower is level when both front and rear blade measurements are the same. The front end may be 1/8" (3 mm) lower than the rear end. Never permit the rear end to be lower than the front end. This will cause more than normal power consumption.
MAINTENANCE A CAUTION: Disengage attachment drive lever, stop engille and remove key and spark plug wlle(sl before making adjustments MOWER BLADE BOLTS BLADE BOLTS. (See Figure 7.1 Before you operate the lawn mower for the first time, check the bolts holding the blades. The bolts must be tight. After the first eight hours of operation, check the bolts again. Each time the blades are removed, install new lock washers under the bolt heads. Tighten the bolts and check again after 8 hours of operation . BE.
SHARP BLADES. (See Figure 9.) CLEANING THE LAWN MOWER CHASSIS Stop the engine. Wait for all motion to stop. Be careful while you check the lawn mower blades. After each job check for damage or blade wear. Large amounts of grass in the blade chassis will: A blade that is worn can give a rough cut and brown areas of grass can resul t. 2. cause an obstructi on 1. cause more than normal horsepower consumption 3. cause a bad cutting job See Figure 9 for the correct angle of the cutting edge.
INSTALLATION 3. Use cotter pins to fasten the lift links to the mounting bracket. See Figure 13. ASSEMBLY 1. Remove the components from the box. Check for damage or missing parts. NOTE: 2. The belt and lift links for your mower are included with your tractor. NOTE: Do not assemble the mounting bracket to the lawn mower chassis as shown in Figure 13. It is easier to first install the mounting bracket on the tractor. On Model 446 and 448 tractors, the offset lift link is fastened to the R. H.
MOUNTING BRACKET FIGURE 13 MODEL K44 ROTARY MOWER - ASSEMBLED NOTE: DO NOT ASSEMBLE MOUNTING BRACKET TO MOWER CHASSIS AS SHOWN. REFER TO STEP 3 - ASSEMBLY. INSTALLING 1. Put the tractor on a level surface like a concrete floor. TIGHTEN BE L T 2. Completely turn the belt adjuster handle counter clockwise. This will permit mounting clearance at the front axle.
3. See Figure 15. Put the mounting bracket under the front of the tractor. Raise and install the mounting bracket on the mounting pins. Align the holes in the , mounting bracket with the "snap fast pins". Release the "snap fast pins" to hold in place. NOTE: b. throught he front hole in the lift arm c. fasten on the outside with a safety pin On Model 446 and 448 tractors the left lift link is install ed using the above procedure. Model 644, 646 and 648 tractors do not have "snap fast pins".
. 6. Put the height selector lever in the "L" position. From the right side, sl ide the lawnmower under the tractor. Align the mounting tabs with the mounting bracket. A Raise the lawn mower to the "M" position. Lower the mounting bracket to the lawn mower chasis. See Figure 16. CAUTION: Shut off engine, allow engine to cool and remove key and spark plug wire(s) before replacing mower drive belt. 10. To install the belt: a. pull the belt up in front of the idler pulleys 7.
TROUBLESHOOTING CHART LAWN MOWER NOT CUTTING EVEN OR LEAVING A STRIP OF GRASS POSSIBLE CAUSE COR RECTION 1. Obstruction in bottom of mower chassis. 1. Remove chassis and clean. 2. Blades not sharp . 2. Cutting edge must be sharp and at least 3-1/2" (89 mm) long. 3. Engine speed too slow. 3. Adjust engine speed to 3600 RPM. 4. Travel speed too fast. 4. Decrease travel speed. 5. Grass too long. 5. Cut twice. First at highest position then at needed height. 6. Drive or chassis belt slippage. 6.
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