"" RO TARY MOWER J 0, J44, J46 Operator's Manual No. 9-50555 ; 1 .OJ .. • . -- .. ~ ). , .
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 THE OPERATOR IS THE SOLE JUDGE AS TO THE DEGREE OF SLOPE ON WHICH THIS TRACTOR CAN BE SAFELY OPERATED. IF IN DOUBT THAT THIS TRACTOR CAN BE SAFELY OPERATED ON A PAR TICULAR SLOPE, DO NOT OPERATE ON THAI SLOPE! COMMON SENSE MUST PR EVAI L. Avoid operating tractor on hillsides and slopes. To mini mize the possibility of accidents while operating on hills and/or rough terrain, obey a combination of rules, prac tices and good common sense.
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 manual contains recommended operating procedures, safety rules, adjustments, maintenance information, assem blyand mounting instructions. Read this manual carefully before operating your rotary mower. genuine Case replacement parts and the required facilities is in the position to provide proper repairs in the shortest time possible .
'/ .;I>. OPERATING CONTROLS The principle components and controls of your rotary mower are identified in Figure 1 with the same description used throughout this manual. Generally best performance is obtained with the transmis· sion in Low range and the engine running % to full throttle. The throttle should be set as low as practical to obtain maxi mum fuel economy but high enough to prevent engine lug down or labor which could cause overheating and poor mowing .
5. Trimming wi II be neater and closer by using the right side of the mower since the clippings will be discharged away from the object. Also the safety sh ield over the discharge opening prevents mowing as close to objects . 4. Figures 2 and 3 illustrate two systems for mowing. If the grass is high or heavy, always mow to throw the clippings away from the uncut ijrea. Figure 2.
1 ADJUSTMENTS A a. Raise mower into transport position to relieve weight from the height selection lever. CAUTION: Disengaqe attachment drive :ever, stop eng;nc and remove key alJd spark plug wl re(s) before making adjustments. b. Pull outward on the height selection knob. c. Move the lever up or down to the desi red height. d . Push knob into the hole selected . 1. Height Selection Lever . See Figure 4 . t, I I 2. Gauge Whee ls . See Figure 4. The mower cutting height is adjustable from l Y:.
i· Adjust the leveling links until the distance between the blade tips and the level surface is the same at both the front and rear of the mower . The forward tip may be slightly lower than the rearward tip. Never permit the rearward tip to be lower than the forward tip. (This doubles power consumption in mowing)! 4 . Mower Fore-Aft Leveling Links. See Figure 6 . Clean cutting and minimum horsepower consumption are dependent upon the mower being level fore and aft.
MAINTENANCE A CAUTION: Disengage attachment drive lever, stop engine and remove key and spar'k plug wire(s) before making adjustments, MOWER BLADE BOLTS 1. Mower Blade Bolts. See Figure 7. Before operating the mower for thE' first time, the bolts holding the blades . They must be tight. the first 8 hours of operation , check them again . ever the blades are removed, it is good practice to new lock washers under the bolts, and again tightness after the next 8 hours of operation.
5. Sharpening Blades. See Figure 9. 7. Cleaning the mower deck. With the engine shut off and after the blades have stopped spinning, check the mower blades periodically for nicks or dullness. Damaged, dull or improperly sharpened blades can cause a shattered, rather than, clean cut and brown areas of grass may develop . Refer to Figure 9 for the correct sharpening angle. Sharpened edge must be at least 2-1/2" (65 mm) long. f;·::.:f;sg.
INSTALLATION I. ASSEMBLY 2. Select the appropriate belt using application chart on page 7. The belt part number is stamped into the outer covering of the belt . NOTE: 1. Before assembling the mower, layout and check the individual components . See Figure 12 . Belt for 600 series tractors is shipped with trac tor. Select the two short lift links if installation is to be on a low clearance (200 or 600 series) tractor.
I ~-- MOUNTING BRACKET NOTE: DO NOT PREASSEMBLE MOUNTING BRACKET TO MOWER DECK AS SHOWN. REFER TO STEP 3 - ASSEMBLY. FIGURE 13 MODEL J-46 ROTARY MOWER - ASSEMBLED ·1 II. MOUNTING 1. Locate tractor on a level surface. Check tires for equal and recommended pressures as found in your tractor Operator's Manual. 2. Before attaching the mounting bracket, turn the adjusting crank counterclockwise as far as possible to provide mounting clearance at the front axle . Refer to Figure 14.
stall plain washer on each clevis pin and install in the front hole of the lift arm from the inside. Secure the links with the safety pins at the outside. Refer to Figure 15. 3. Position the mounting bracket under the front of the tractor and onto the anchor pins as shown in Figure 15. Raise the front of the bracket and release the snap fast I?ins to lock in place. NOTE For Model 446 only, the special right lift link should be installed on the outside .of the right lift arm.
FIGURE 16 MOUNTING THE J-46 MOWER DECK (Special Lift Link used with 446 Tractor shown) 10. Check to make sure the belt is properly located in each pulley . Turn the adjusting crank counterclockwise to tension the belt until the idler spring coils open 1/8 inch (3 mm) (approximately the thickness of two nic kels. See Figure 5 and 14.) Disengage the attachment drive lever and reconnect the spark plug wire(s).
TROUBLESHOOTING MOWER PERFORMANCE A. MOWER LEAVING STRIPS OF GRASS, SKIPS, RAGGED OR .. ' - ....... ..-:,: "" POSSIBLE CAUSE " ri~ .. """ UNEVEN CUT ~ ,.. t CORRECTION 1. Underside of mower deck plugged with cutting residue. 1. Remove mower and clean underside. 2. Blades dull, nicked or improperly sharpened. 2. Cutting edge must be kept sharp and at least 2-1/2." (65 mm) long. 3. Engine speed too low. 3. Adjust engine speed to 3600 RPM. 4 . Ground travel speed too fast. 4.
Printed in U.S.A.
