OPERATOR MANUAL Includes Safety, Service and Replacement Part Information 300 Series Hole Diggers Models: 330H, 343H, 357H Form: GOM12070702 Version 1.2 Do not discard this manual. Before operation, read and comprehend its contents. Keep it readily available for reference during operation or when performing any service related function. When ordering replacement parts, please supply the following information: model number, serial number and part number. For customer service assistance, telephone 800.533.
Manufacturers of light construction equipment Congratulations on your decision to purchase a General light construction product. From our humble beginnings in 1955, it has been a continuing objective of General Equipment Company to manufacture equipment that delivers uncompromising value, service life and investment return. Because of this continuous commitment for excellence, many products bearing the General name actually set the standards by which competitive products are judged.
3 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 Table of Contents DESCRIPTION PAGE Notice to Operators 5 Operational Instructional Data Sheet 7 Safety Precautions PREPARATION. OPERATION. MAINTENANCE, REPAIR AND STORAGE. GENERAL SAFETY INFORMATION. 8 8 10 11 13 Assembly INSTALLING THE COMPOSITE MATERIAL OPERATOR HANDLES. NOTES TO THE THROTTLE CABLE INSTALLATION. 15 Before Starting the Engine FILLING THE ENGINE CRANKCASE WITH OIL. FILLING THE HOLE DIGGER TRANSMISSION WITH OIL.
4 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 ENGINE SERVICE. Repair BASIC INFORMATION. TRANSMISSION OIL SEAL REMOVAL AND INSTALLATION. CENTRIFUGAL CLUTCH REMOVAL AND INSTALLATION. 40 Troubleshooting ENGINE. OPERATIONAL PROBLEMS.
5 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 Notice to Operators IF YOU CAN NOT READ OR DO NOT FULLY UNDERSTAND THE CONTENTS OF THIS MANUAL, PLEASE CONTACT THE FACTORY FOR PROPER ASSISTANCE BEFORE ATTEMPTING TO OPERATE THIS PRODUCT. SI TU NO PUEDES LE’ER O NO COMPRENDES EL CONTENIDO DE ESTE MANUAL FAVOR DE PONERSE EN CONTACTO CON LA. FABRICA PARA ASSISTENCIA- A PROPIA ANTES DE INTENTAR PARA OPERAR ESTE PRODUCTO.
300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 6 The concept of portable, one and two man, hole digging equipment has been successfully utilized for many years as a practical solution to many types of hole digging job requirements. The basic concept is proven and well accepted within the associated marketplaces. Use of a Hole Digger requires strenuous work activity.
7 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 Operator Instructional Data Sheet The following undersigned operators of the Hole Digger described and/or pertaining to this Operator Manual have received formal safety and operational information/instruction from the undersigned owner(s)/instructor(s) in accordance to OSHA 29 CFR 1926.
300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 Safety Precautions THE FOLLOWING SAFETY PRECAUTIONS PROVIDE SOME COMMON SENSE GUIDES TO PROMOTE SAFETY AND EFFICIENCY WITH THE 300 SERIES HOLE DIGGERS. NO WARRANTY, GUARANTEE OR REPRESENTATION IS MADE BY THE MANUFACTURER AS TO THE ABSOLUTE CORRECTNESS OR SUFFICIENCY OF ANY INFORMATION OR STATEMENT.
300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 remain below their shoulder sockets. Do not operate the Hole Digger if this condition is not satisfied. The 300 Series Hole Diggers require that both operators be of similar height, weight and strength to maximize digging efficiency and minimize the possibility of personal injury. Both operators share the burden associated with the hole digging process.
300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 OPERATION. 1) Give complete and undivided attention to the job at hand. Do not chew gum, smoke and/or use smokeless tobacco while utilizing the Hole Digger. Do not attempt to eat and/or drink while utilizing the Hole Digger. Determine that eyeglasses, hearing aid devices and other medical related devices are properly secured. Keep shoes properly laced. Use of the Hole Digger is strenuous and causes fatigue. Help prevent the cause of an accident.
300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 Contact the Customer Service Department for information relative to restoring the Hole Digger to its original configuration BEFORE further utilization. There is no charge for this service. 11) Contact with a hot, engine muffler can cause property damage and/or personal injury. Remain clear of a hot engine muffler. Do not over speed the engine by altering the governor setting or by disconnecting the engine governor.
300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 life or that have not been properly maintained can result in substandard productivity, excessive property damage and/or personal injury. Auger service life can be greatly extended with a consistent auger maintenance program. 11) At the conclusion of the useful service life of the Hole Digger, drain and properly dispose of all fluids per local requirements. Disassemble engine and transmission components.
300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 13 General Safety Information Physical Exertion Operating the Hole Digger requires proper physical stamina and mental alertness. Improper operation can result in physical injury and/or damage to the machine. Operators must be alert and of proper physical size and condition. Noise The Hole Digger operates with a noise emission level grater then 70dba. Exposure to high noise emission levels can result in hearing loss or damage.
14 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 Safety Practices: Operation is strenuous work. Operators must be in proper physical condition, mental health and not under the influence of any substance which might impair vision, dexterity or judgment. Check with your doctor BEFORE operation. Proper Operator Position Crew Chief operates engine throttle control with right hand. Crew member operates choke control and starts engine.
15 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 Assembly Open the shipping carton immediately upon receipt. Visually inspect the contents of the carton for freight damage and/or missing parts. If shipping damage is evident, contact the delivering carrier immediately to arrange for an inspection of the damage by their claims representative. Federal law requires that a claim be filed within a specified time period.
16 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 operating instructions in this Operator's Manual are directed with the Magura throttle control to be assembled and operated in the configuration as outlined in the Assembly section. Do not deviate the assembly and operation of the Magura® throttle control from that outlined in the Operator's Manual. FIGURE 4. FIGURE 5 7) Loosen the Phillips head screw on the throttle arm swivel. Route the inner wire into the hole of the swivel assembly.
17 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 FOR OPERATIONAL SAFETY AND PRODUCTIVITY CONSIDERATIONS, IT IS EXTREMELY IMPORTANT THAT INNER WIRE SLACK BE COMPLETELY REMOVED FROM THE THROTTLE CONTROL SYSTEM. INNER WIRE SLACK CAN REDUCE OVERALL OPERATOR CONTROL, RESULTING IN PROPERTY DAMAGE AND/OR PERSONAL INJURY. FIGURE 7 9) Using the vice grip type pliers, remove any excess inner wire slack and tighten the swivel assembly screw using the flat bladed screwdriver and 5/16 inch wrench.
18 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 a) If equipped, the shorter (inner) screw is non functional for this application. b) The longer (outer) screw is factory set to prevent the engine from operating in an overspeed configuration. As set at the factory, the GXV160 engine will operate at approximately 3800/3900 RPM no load. In a no load configuration the engine is operating at maximum governed speed without an earth auger attached to the transmission driveshaft.
19 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 4) Inspect the oil filler/level plug gasket for proper security. If necessary, replace the gasket with a factory approved replacement part only. Reinstall the oil filler/level plug. Tighten securely with the adjustable wrench. Wipe off any excess oil spilled on the transmission. Properly dispose of the spilled oil. 1) Carefully clean the filler cap and the surrounding area to insure that no dirt or debris falls into the fuel tank.
20 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 SPARK ARRESTER DISCLAIMER. Application: All 300 Series models. DO NOT OPERATE THE HOLE DIGGER ON ANY FOREST COVERED, BRUSH COVERED OR GRASS COVERED, UNIMPROVED LAND UNLESS AN APPROVED SPARK ARRESTER IS INSTALLED ON THE MUFFLER. THE SPARK ARRESTER MUST BE MAINTAINED IN PROPER WORKING ORDER BY THE OWNER AND/OR OPERATOR. IN THE STATE OF CALIFORNIA, THE ABOVE IS REQUIRED BY LAW. OTHER STATES MAY HAVE SIMILAR LAWS.
300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 The Hole Digger may utilize operator handles constructed of a specially designed, S-Type composite material intended to reduce machine weight and help absorb the shock loads transmitted to the operators during the digging process. This material has shown to be very durable and will offer a very acceptable service life.
22 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 Handle reinforcements provide structural integrity. Use of the Hole without the proper operator reinforcement can result in handle and/or personal injury. proper Digger handle failure 6) Do not utilize chains or slings wrapped around the composite material operator handles to help remove a Hole Digger which has become stuck in the ground.
300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 number and design configuration exists. Models 330H and 357H utilize the 3/8 inch (9.5mm) diameter, PN 2121 auger pin. Model 343H utilizes the 5/16 inch (8 mm) diameter, PN 2021 auger pin. FIGURE 10. 23 THE ENGINE SPEED CAN RESULT IN PROPERTY DAMAGE AND/OR PERSONAL INJURY. THE HOLE DIGGER IS DESIGNED FOR TWO MAN OPERATION.
24 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 the engine does not start in three pulls, consult the material supplied by the engine manufacturer for specific information. As the engine warms up, the Crew Member pushes the choke lever in to its detent position. 7) Normally, an engine that has not been run for some time requires three to five pulls before it will fire. On the other hand, a recently run engine will usually start on the first or second pull.
25 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 OPERATING THE HOLE DIGGER. Application: All 300 Series models. 1) Do not attempt to begin digging with the Hole Digger until both the Crew Chief and Crew Member have acknowledged to each other that they are ready and are in full control of the machine. 2) The Crew Chief rotates the throttle control counterclockwise to increase the engine speed.
26 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 hole digging process, the operator will be required to lift the Hole Digger and auger/auger extension with numerous repetition, as demanded by the specific job application. Utilizing proper lifting techniques will minimize fatigue and back-related injuries while increasing overall productivity rates. ANATOMY The human body is supported by the spinal column.
27 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 during the digging process. Positioning the left foot ahead of the right foot will enhance proper body position. Maintaining proper operating positions is one of the most IMPORTANT and EFFECTIVE procedures for controlling kickback. Improper operating positions only aggravate the effects of kickback upon the operators. FIGURE 14 depicts proper operator positions that enhance machine control.
28 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 aggravate the effects of kickback upon the operators by limiting control and comfort. Handle grips should be repaired and/or replaced when they become worn and/or damaged from use. Do not operate the Hole Digger until such handles are repaired and/or replaced. Damage to property and/or personal injury can result. Always assume that every digging site can include some form of buried obstruction.
29 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 pin to retain the earth auger to the transmission driveshaft. This pin is not intended to shear when the auger comes in sudden contact with a buried object. The pins are utilized for the following reasons: a) Such an occurrence (pin shear) would result in extensive physical damage to the driveshaft and auger drive hub.
300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 Damage to property and/or personal injury can result if one or more operators lose partial and/or full control of the Hole Digger while in this configuration. STOP the Hole Digger and remove it from the buried auger. The buried auger can then be retrieved by various, industry accepted methods. Contact the Customer Service Department for specific information. There is no charge for this service.
31 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 10) Attempting to restart the engine with the auger in a partially or completely dug hole requires extra caution. In this configuration, the throttle control can be advanced beyond the idle speed position before the two operators can exercise proper control of the Hole Digger.
32 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 viscous drag within the centrifugal clutch assembly. The clutch is NOT engaged.) and the ignition cut off when the throttle control is released or fully closed. If this is not taking place, or the ignition cut-off switch can not be engaged with throttle control movement, check the throttle control and throttle cable for binding and/or improper adjustment.
33 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 ACTION CAN RESULT IN DAMAGE TO THE TWIST GRIP THROTTLE CONTROL AND ENGINE.A THROTTLE CONTROL THAT DOES NOT OPERATE PROPERLY CAN RESULT IN PROPERTY DAMAGE AND/OR PERSONAL INJURY.
34 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 and common sense levels of each operator of the Hole D i g g e r. Utilization of nonflighted and full flighted auger extensions requires the accumulation of actual hole digging experience, skill and common sense. Each operator must decide if his experience, skill and common sense level is sufficient to allow him to proceed with the utilization of nonflighted and full flighted auger extensions for any given and/o r specific job application.
35 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 as outlined above. Remove the auger extension from the auger/auger extension string. FIGURE 24. FIGURE 24 3) Disconnect the Hole Digger from the blocked auger extension(s)/auger string. Store the Hole Digger on the job site as outlined. Remove the auger extension that is clear of the hole from the auger extension(s)/auger string. 4) Reconnect the Hole Digger to the remaining auger extension(s)/auger string.
36 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 1) Change the transmission oil every 25 hours of operation, or more often as necessary, if the Hole Digger is operated in extremely dusty or dirty conditions. 2) Wipe any dust or dirt from the oil filler/level plug and oil drain plug areas of the transmission. The oil filler/level plug is located on the side of the transmission and is appropriately marked. The oil drain plug is located under the transmission.
37 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 Do not operate the Hole Digger without a rubber boot assembly in proper condition mounted in position on the Magura throttle control. Without the use of a p r o p e r r u b b e r b o o t a s s e m b l y, f o r e i g n materials can accumulate within the t h r o t t l e c o n t r o l a s s e m b l y.
300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 Note: Tungsten Carbide hardfaced versions (SB25C, SB35C and SB45C) of each applicable screw bit are available. A screw bit hardfaced with Tungsten Carbide will not increase the overall productivity rates of a specific auger equipped with the standard screw bit. The Tungsten Carbide hardfacing will only substantially increase the anticipated service life of a screw bit.
39 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 WEAR SAFETY EYEWEAR AND ANY OTHER SAFETY APPAREL DEEMED APPROPRIATE FOR THE JOB APPLICATION AND/OR JOB SITE ENVIRONMENT. THE TOOTH REPLACEMENT PROCESS CAN CREATE FLYING STEEL CHIPS AND/OR OTHER DEBRIS. CAUTION ALL ONLOOKERS REGARDING THE POSSIBILITY OF AND/OR TO REMAIN CLEAR OF FLYING DEBRIS. IMPROPER SAFETY PROCEDURES CAN RESULT IN PROPERTY DAMAGE AND/OR PERSONAL INJURY.
40 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 DO NOT STRIKE ANY REPLACEMENT TOOTH DIRECTLY WITH A STEEL HAMMER. S U C H A N O C C U R R E N C E C A N C R E AT E FLYING STEEL CHIPS AND OTHER DEBRIS, R E S U LT I N G IN PROPERTY DAMAGE AND/OR PERSONAL INJURY. CAUTION ALL ONLOOKERS TO REMAIN CLEAR OF THE AREA WHEN PERFORMING AUGER MAINTENANCE.
41 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 Other major components are equally shared between all 300 Series Hole Diggers, including operator handles, throttle control, transmission case and bearings. A pressure relief valve, PN 5677, is located on the top surface of the transmission cover to relieve any excess pressure created in the transmission due to heat rise.
42 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 Observe all applicable safety precautions for the solvent. 5) Remove the self-locking nut, PN 19160001 and flat washer, PN 17160000. 6) Using the gear puller, remove the secondary gear, PN 345-0350 from the driveshaft. Remove the Woodruff key, PN 15, and the Nilos ring, PN 08125/08231B-AV. 7) Using the shop press and suitable blocking, support the driveshaft housing area of the transmission case to prevent deformation damage.
300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 the machined shoulder. Cocking the seal in the housing contributes to oil seal failure. The tool is approximately 2.431 inches (61.7 mm) outside diameter. The inside diameter of the tool is approximately 2-1/4 inches. Apply the face of the service tool to the crimped bead of the oil seal, inasmuch as pressure too close to the center of the seal will distort or damage it. FIGURE 34.
44 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 Application: 330H, 343H and 357H Hole Diggers powered by the Honda GXV160 engine. The 330H, 343H and 357H Hole Diggers utilize an all metal centrifugal clutch rotor and shoe assembly that expands with engine RPM to engage the clutch drum and transfer torque. The centrifugal clutch rotor and shoe assembly is mounted to and operates concentrically about the engine crankshaft.
45 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 GASOLINE IS AN EXTREMELY FLAMMABLE FUEL. USE EXTREME CAUTION WHEN HANDLING GASOLINE. DO NOT SMOKE OR BRING ANY FIRE OR FLAME NEAR THE FUEL. 2) Split and separate the transmission cover and case. Exercise caution not to damage the dowel pins. Remove the primary gear and pinion assembly, PN 7034 and PN 345-0310. 3) Clean the transmission case with an appropriate solvent. FIGURE 37 Observe all applicable safety precautions for the solvent.
46 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 8) Clean the surface of the crankshaft with an appropriate solvent. Observe all applicable safety precautions for the solvent. 9) Install the replacement PN 330H-0175 clutch rotor and shoe assembly on the engine crankshaft with the hub, including the two set screws, toward the crankcase. Tighten with the 1/8 inch Allen wrench. FIGURE 39. The end of the crankshaft fits flush against the edge of the clutch rotor and shoe assembly. FIGURE 40.
47 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 Troubleshooting Application: All 300 Series models. ENGINE. ENGINE FAILS TO START. Ignition switch (if equipped) in OFF position. Place in ON position. Ignition cut-off switch (if equipped) improperly adjusted. Adjust throttle cable. Digging Operation section. Incorrect throttle control/cable adjustment. See Assembly section. AUGER ROTATES AT IDLE SPEED. Incorrect throttle control/cable adjustment does not permit proper engine idle speed.
48 300 SERIES MAN HOLE DIGGER FORM GOM12070702, VERSION 1.2 Always store the Hole Digger with the operator handles level with the ground. By not storing the Hole Digger in this configuration, transmission oil may drain from the breather vent and damage the surrounding environment. If the Hole Digger is powered by a 4 Cycle gasoline engine, this configuration will minimize the potential for crankcase oil entering the combustion chamber and creating a hydraulic lock up.
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