o w n e r ' s m a n ua l 9 inch chipper 72928 - 28 HP KUBOTA 72928S - 28 HP KUBOTA 74950 - 50 HP KUBOTA 74950S - 50 HP KUBOTA MADE WITH PRIDE IN THE...
Before You Begin DEAR ECHO BEAR CAT CUSTOMER Thank you for purchasing an ECHO Bear Cat product. The ECHO Bear Cat line is designed, tested, and manufactured to give years of dependable performance. To keep your machine operating at peak efficiency, it is necessary to adjust it correctly and make regular inspections. The following pages will assist you in the operation and maintenance of your machine. Please read and understand this manual before operating your machine.
LIMITED WARRANTY This warranty applies to all AG and Outdoor Power Equipment manufactured by Crary Industries. Crary Industries warrants to the original owner each new Crary Industries product to be free from defects in material and workmanship, under normal use and service. The warranty shall extend 1 year from date of delivery for income producing (commercial) applications and 2 years from date of delivery for non-income producing (consumer) use of the product.
TABLE OF CONTENTS DESCRIPTION PAGE SAFETY........................................................................... 3 1.1 SAFETY ALERT SYMBOL...................................... 3 1.2 before operating............................................ 3 1.2 before operating (cont.).............................. 4 1.3 OPERATIon SAFETY............................................. 4 1.4 FEED ROLLER SAFETY......................................... 4 1.5 battery safety...............................................
1 Section SAFETY 1.1 SAFETY ALERT SYMBOL 1.2 before operating 1. Read and understand this Owner/Operator's manual. Be completely familiar with the controls and the proper use of this equipment. 2. Familiarize yourself with all of the safety and operating decals on this equipment and on any of its attachments or accessories. The Owner/Operator's manual uses this symbol to alert you of potential hazards. Whenever you see this symbol, read and obey the safety message that follows it.
SAFETY 1.2 before operating (cont.) 13. Keep all guards, deflectors, and shields in good working condition. 14. Before inspecting or servicing any part of this machine, shut off the machine, remove the ignition key and make sure all moving parts have come to a complete stop. 15. Check that all screws, nuts, bolts, and other fasteners are secured, tightened and in proper working condition before starting the machine and once every 8 hours of operation. 16.
SAFETY 1.5 battery safety 1.6 MAINTENANCE/storage SAFETY 1. Improper use and care of the battery on electric start models can result in serious personal injury or property damage. Always observe the following safety precautions. 2. Poison/Danger - Causes Severe Burns. The battery contains sulfuric acid. Avoid contact with skin, eyes or clothing. Keep out of reach of children. ANTIDOTE-External Contact: Flush immediately with lots of water. ANTIDOTE-Internal: Drink large quantities of water or milk.
SAFETY 1.8 safety decal locations (72928, 74950) See pages 10-11 for numbered decal pictures and descriptions. 12 * Decal 15, #17423, is located on the drive belt shield underneath the belt guard.
SAFETY 1.9 safety decal locations (72928s, 74950s) See pages 10-11 for numbered decal pictures and descriptions.
SAFETY 1.10 safety decals Safety and instruction decals are located on the chipper frame and engine. Replace any decal that is damaged or unreadable. 5 1 pN 12010 2 PN 12169 KEEP HANDS AND FEET OUT OF INLET AND DISCHARGE OPENINGS WHILE MACHINE IS OPERATING TO AVOID SERIOUS PERSONAL INJURY. ALLOW MACHINE TO COME TO A COMPLETE STOP BEFORE CLEARING OBSTRUCTIONS. do not operate machine without shields in place. failure to do so may cause serious injury or death.
SAFETY 1.10 safety decals (cont.
2 Section ASSEMBLY note Axle and hitch assemblies for "S" models are supplied by the distributor and may vary from the illustrations shown below. 3/8” NYLOCK NUT 5/8” CENTERLOCK NUTS 5/8” WASHERS 3/8” WASHER PINTLE RING 5/8” x 4-1/2” BOLT TOP LINK PIN 3/8” x 2-1/2” BOLT 2.1 ATTACH TRAILER WHEELS 1. Remove the chipper from its shipping crate. Place the unit on a level surface before attempting to assemble it. LYNCH PIN SAFETY CHAIN 2.
ASSEMBLY 2.4 ATTACH chute support 1. Attach the chute support to the rear end of the trailer using one 3/8" x 2" bolt, washer and locknut. Torque to 35 ft-lbs. Refer to Figure 2.3 for proper positioning of the weldment. HYDRAULIC FEED CHUTE SUPPORT WELDMENT CHIPPER CHUTE 3/8” x 2” BOLT Figure 2.4, Chipper chute assembly 2.6 ATTACH extension tray 1. Tilt the extension tray up, so the bottom of the tray is facing outward (Figure 2.5).
ASSEMBLY 2.7 connect control cable BLOWER DISCHARGE TUBE 1. Remove the clevis assembly from the hydrostatic control cable end (see Figure 2.6). Remove one nut on the cable end. Insert the cable end into the hole in the cable anchor weldment. Replace the nut and clevis assembly. 2. Attach the clevis assembly to the center hole on the feed control lever. 3. Adjust the cable detent ball to contact the detents in the cable anchor weldment when the control arm is in the forward or reverse position.
ASSEMBLY 2.10 checking/adding fluids 2.10.1 Diesel fuel For best results, use only fresh, clean #2 diesel fuel. An additive for cold weather may be used to prevent fuel from turning to a gel. To add fuel: 1. Stop engine and wait for all moving parts to come to a complete stop. Allow the engine and muffler to cool for at least three minutes. 2. Clean area around fuel fill cap and remove cap. 3. Using a clean funnel, fill fuel tank to 1/2" below bottom of filler neck to allow room for expansion. 4.
3 Section controls and operation 3.1 controls 1. Chipper Chute: Feeds materials to the chipper blades for chipping. CAUTION Wear safety glasses at all times when operating the machine. Do not wear loose fitting clothing. The operator should always wear heavy boots, gloves, pants and shirt. Use common sense and practice safety to protect yourself from branches, sharp objects and other harmful objects. 2. Discharge Tube: Chipped material exits through this tube. It is adjustable 360 degrees. 3.
CONTROLS AND OPERATION 3.2 operation 3.2.2 stopping CAUTION Move machine to a clear, level area outdoors before starting. Do not operate machine on a paved, concrete or gravel surface. Do not operate in the vicinity of bystanders. Make sure cutting chamber is empty before starting. 3.2.1 starting 1. Before starting, fill engine with oil to the correct level. Some oil usage is normal, so check the level before each use. See engine manual for additional starting, operation and maintenance instructions.
CONTROLS AND OPERATION 3.2 operation (cont.) WARNING Please read and follow all safety instructions in this manual. Failure to operate the chipper in accordance with the safety instructions MAY RESULT IN PERSONAL INJURY! 3.2.3 chipping This chipper is designed to chip a variety of materials into a more readily decomposing or handled condition. The following guidelines can be used to help you get started. 1. Be sure the unit is at full operating speed before you start to chip material. 2.
CONTROLS AND OPERATION 3.3 hydraulic feed operation (cont). Reverse Neutral Forward Feed Control Lever WARNING Do not start engine unless pump is in neutral or detent position on the cable. 5. As air is purged from the unit, the oil level in the reservoir will drop and bubbles may appear in the fluid. Refill the reservoir as necessary. 6. Run the unit in both directions for several minutes until any remaining air is purged from the unit. Refill the reservoir as necessary. 7.
CONTROLS AND OPERATION 3.6 ELECTRONIC FEED SENSOR The LOFA control connects to the shaft sensor and solenoid coil. The sensor (Figure 3.6) should be positioned 1/32" from the rotor collar bolt. The solenoid coil is attached to the crossover relief valve (Figure 3.7). When the system senses that the rotor RPM has dropped below a certain preset level, it will slow the hydraulic feed. When the rotor RPM returns to a normal operating level, the hydraulic feed will return to its previous rate. Figure 3.
CONTROLS AND OPERATION 3.7 lofa control programming Step 1. Initiating Program Mode Hold down the “S” button while turning the engine key to the “on” position until “L” starts to flash on the LCD (Figure 3.8). Step 2. Enter Low (L = Low) RPM The low setting is the RPM speed where the feed roller stops. The “up” arrow increases the RPM setting, while the “down” arrow decreases the RPM setting. Setting the speed lower causes the engine to lug down more before the feed roller stops. 1.
4 Section SERVICE & MAINTENANCE 4.1 maintenance schedule The items in the service and maintenance schedule are to be checked, and if necessary, corrective action taken. This schedule is designed for units operating under normal conditions. If the unit is operating in adverse or severe usage conditions, it may be necessary for the items to be checked and serviced more frequently. See the engine owners manual for further engine maintenance and troubleshooting problems.
SERVICE & MAINTENANCE 4.2 replacement & maintenance chart Note: When ordering replacement parts, be sure to identify the model and serial number of the machine.
SERVICE & MAINTENANCE Chipping Blade Sharpening Tips 4.3 SHARPENING CHIPPER BLADES Poor chipping performance is usually a result of dull chipping blades. If your chipper's performance has decreased, check for the following symptoms: WARNING Before inspecting or servicing any part of the machine, shut off engine and make sure all moving parts have come to a complete stop. The chipping blades are sharp! Use care when working on machine to avoid injury.
SERVICE & MAINTENANCE 4.4 SETTING BLADE CLEARANCE (cont.) 10. Tighten bolts on anvil to 75 ft-lbs. Make sure all blades clear the anvil by 1/16" to 3/16". 11. Remove lock pin and put it back into its storage position. LEAVING THE LOCK PIN IN ANY OTHER POSITION MAY INTERFERE WITH FEED ROLLER OPERATION. 12. Turn the check valve counterclockwise to disengage the pump and lower the jack. LOCK PIN STORAGE SUPPORT POSITION BRACKET 4.
SERVICE & MAINTENANCE 4.8 hydraulic feed maintenance 4.7 replacing rotor bearings 1. Remove the two retaining bolts holding the access cover to main frame assembly. Tilt access cover over to allow rotor access. 2. Remove large belt guard. 3. Loosen bolts on hydraulic pump and remove hydraulic pump belt. 4. Take the tension off the drive belt by depressing the belt engagement pedal. Then, remove the drive belt from pulleys.
5 TROUBLESHOOTING Section 5.1 chipper troubleshooting Before performing any of the corrections in this troubleshooting chart, refer to the appropriate information contained in this manual for the correct safety precautions and operating or maintenance procedures. Contact your nearest dealer or the factory for service problems with the machine. PROBLEM Rotor does not turn Hard to feed chipper; requires excessive power to chip. Drive belt squealing or smoking.
TROUBLESHOOTING 5.2 hydrostatic pump troubleshooting PROBLEM Will not attain normal feed rate PROBABLE CAUSE SUGGESTED SOLUTIONS Engine not operating at correct speed. Repair engine governor. Control linkage damaged or binding. Repair control linkage. Bypass valve stuck partially open (Problem in one direction only). Repair bypass valve. Remove foreign material from valve. Control linkage damaged or not connectRepair or reconnect control linkage. ed. Will not feed when control arm is moved.
6 Section Specifications 6.1 chipper specifications Overall Size (L x W x H) Max. Chipper Cap. (dia.) Chipper Blade Qty. Rotor Speed Rotor Size Rotor Weight Rotor Shaft Diameter Discharge Size Drive Type Drive Belt Size Hydraulic Belt Size Weight (Lbs.) Wheel Base Tire Size Fuel Tank Cap. (Gal.) Engine 72928/72928S 119" x 79" x 89" 9" 4 Reversible Tool Steel 1500 RPM 30" dia. x 1.25" 275 lbs. 1.
SPECIFICATIONS 6.2 bolt torque The tables below are for reference purposes only and its use by anyone is entirely voluntary, unless otherwise noted. Reliance on its contents for any purpose is at the sole risk of that person. Bear Cat is not responsible for any loss or damage resulting from the use of this information. In developing these tables, Bear Cat has made a determined effort to present the contents accurately.
Declaration of Conformity The undersigned manufacturer: Crary Industries, Inc. 237 NW 12th Street P.O.
Declaration of Conformity The undersigned manufacturer: Crary Industries, Inc. 237 NW 12th Street P.O.
ECHO Bear Cat 237 NW 12th Street, West Fargo, ND 58078-0849 Phone: 701.282.5520 • Toll Free: 800.247.7335 Fax: 701.282.9522 • E-mail: service@crary.com • opesales@crary.com www.BearCatProducts.
