Truper Earth Auger AHO-52

Technical Data

Fuel Requirements

The auger uses a mixture of unleaded gasoline and high-quality self-mixing oil for air-cooled 2-stroke engines.

• Use unleaded gasoline with an octane rating of 87 ([R+M]/2) or higher.
• Do not use pre-mixed gasoline from gas stations (e.g., for motorcycles).
• Do not use automotive-use oil or 2-stroke outboard motor oil.
• The mixture ratio is 50 parts gasoline to 1 part oil (50:1). Prepare the mixture in an approved gasoline container and mix well before pouring.

CAUTION: Do not use fuel mixture stored for more than 15 days. Prepare in small quantities.

WARNING: Never smoke near fuel or during refueling.

WARNING: Starting the auger without oil in the fuel mixture will cause engine failure.

To prepare the mixture, use the caps from ACES-2, ACES-5, or ACES-20 TRUPER EXPERT oils as a measure. Mix 4 caps of oil with each liter of fuel.

Example: 1 liter of gasoline + 4 oil caps = 50:1 Mixture

For extended engine life, use synthetic TRUPER EXPERT oil for two-stroke engines.

* 1 gallon = 3.78 liters

** Not included

General Motor Tool Safety Warnings

• Keep your work area clean, tidy, and well lit.
• Never use the tool in explosive areas or near flammable liquids. Keep the tool at least 9 meters (30 feet) away from the fill-up area before starting the motor.
• Keep children and passersby at a safe distance while operating.
• Avoid contact with power lines and circuits.
• Stay alert, use care, and common sense.
• Refrain from using the tool if tired or under the influence of drugs, alcohol, or medication.
• Operate the tool with guards and protection devices in place and in good working condition.
• Do not force the tool.
• Keep the tool in a safe place and out of the reach of children.
• Wear proper clothes: avoid loose clothing, jewelry, or long hair that could get caught in moving parts.
• Keep hands away from rotating and/or mobile parts.
• Do not operate the tool in enclosed areas. Avoid breathing carbon monoxide.
• Wear adequate protective safety accessories: eye protection, dust mask, non-skid safety shoes, helmet, and ear plugs.
• Turn off the tool before adjusting, changing accessories, or storing. Ensure the switch is off.
• Refrain from operating the tool if the switch is not working or is not properly assembled.
• Do not overreach. Maintain good balance and support.
• Avoid the tool starting unintentionally. Double-check the motor is off before maintenance or storage.
• Remove brackets before turning on the tool.
• Service the tool and double-check it is in good working condition before operating.
• Use only accessories or spare parts indicated in this manual or certified by Truper.
• Never leave a running tool unattended. Turn off and disconnect the tool after use.
• Never smoke in the proximity of fuel.
• Do not touch parts with high temperatures.

Safety Warnings for the Use of Earth Augers

Fuel Handling

• Never smoke near fuel, the refueling area, the oil mixture preparation area, or when operating the tool.
• Handle fuel carefully as it is highly flammable.
• Do not allow gasoline or oil to contact the skin. Protect your eyes from splashes. Wash immediately with clean water if contact occurs. Seek medical attention if irritation persists.
• Mix and store fuel in an approved container. Mix fuel outdoors away from sparks or flames.
• Before refueling, turn off the engine, place the tool on clear ground, and wait for the engine to cool.
• Clean any spilled fuel before operating.
• Check for fuel leaks and correct them before use.
• Keep the auger at least 9 meters (30 feet) away from the fueling area before starting the engine.
• Never burn spilled fuel for disposal.
• Never use any fuel type other than that specified in this manual.

Before Operating the Earth Auger

• Wear appropriate clothing: tight-fitting clothes, thick pants, slip-resistant safety boots, heavy-duty protective gloves, and safety glasses with side protection.
• Remove any accessories or loose clothing that could be caught by the moving auger. Tie back long hair.
• Ensure the auger is in perfect condition. Do not start if it is poorly adjusted, not fully assembled, or if the fuel tank has a leak.
• Ensure the auger stops moving when the throttle trigger is released. If it does not stop, turn off the auger and consult a Truper Authorized Service Center.
• Ensure the auger is clean, dry, and free of oil or fuel.
• Ensure the work area is open and well-ventilated.
• Check the work area and remove any stones, broken glass, nails, wire, or rope that could be thrown or entangled.
• In extreme temperatures, check for ice formations or condensation.
• Ensure adequate visibility and lighting conditions.
• Do not use the auger without guards or if they are damaged or missing parts.

When Operating the Earth Auger

• CAUTION: Keep pedestrians, children, and animals at least 15 meters away.
• Ensure the auger is not in contact with any object before starting the engine.
• WARNING: Keep both feet firmly on the ground and both hands gripping the handles. Never operate with one hand.
• Keep all parts of your body away from the auger when the engine is running.
• Always keep the auger pointing downward, below your waist level. Never lift it over your shoulders.
• Keep all body parts away from the muffler to avoid serious burns.
• Keep the auger away from flammable materials.
• Be aware of your surroundings; the auger's noise may prevent you from noticing them.

After Operating the Earth Auger

• WARNING: Do not attempt to stop the rotating movement of the auger by any means other than releasing the switch. Let it stop on its own after turning off the auger.
• CAUTION: Always move the auger with the engine off. Keep the muffler away from the body. Empty the fuel tank before loading it onto a vehicle.
• WARNING: Turn off the engine before setting the auger aside. Do not leave the engine running unattended. Let it cool down before storing.
• CAUTION: Service and repair should only be performed by highly trained personnel. Seek a Truper Authorized Service Center.

Parts

The earth auger consists of the following main parts:

• Throttle safety lock
• Switch
• Throttle trigger
• Control handle
• Throttle lock button
• Allen wrenches
• Muffler and exhaust
• Fuel tank
• Fuel tank cap
• Primer bulb
• Choke lever
• Air filter cover
• Shock absorber
• Handle
• Starter cord
• Spark plug cover
• Quick-change auger pin
• Blade
• Drill bit
• Auger

Assembly

Shaft Connection

• Place the equipment on the ground as shown in the image.
• Insert the shaft (A) into the shock absorber (B) and the shock absorber into the auger (C).
• Note: Align the arrow hole with that of the shock absorber and the shock absorber with that of the auger.
• To secure the connection between the shaft and the shock absorber, insert the quick-change auger pin (F) through the holes.
• To secure the shock absorber and the auger connection, insert the quick-change auger pin (F) through the holes.

Fuel Supply

• Follow the safety guidelines for fuel handling (page 5).
• Wait for the engine to cool completely before refueling.
• Place the tool on a flat surface, leaning it as indicated in the diagram.
• Clean around the fuel tank cap to prevent contamination.
• Loosen the fuel tank cap slowly.
• Carefully pour the fuel mixture into the tank, avoiding spills.
• CAUTION: Follow the fuel specifications (page 3).
• Before closing the fuel tank, check and clean the gaskets.
• Immediately replace the fuel tank cap and tighten it by hand.
• Clean any fuel spills.
• CAUTION: In a new engine, it is normal to have smoke emissions during and after the first use.

Engine Startup

• Firmly grip the equipment by the auxiliary handle while positioning the drill vertically on the drilling ground.
• Set the switch to the ON position (A).
• If the engine is cold, move the choke lever (B') to the CLOSED position (N). Press and release the primer bulb 6 times (C) or until fuel circulates through the hoses leading to the carburetor.
• If the engine is hot, move the choke lever (B²) to the OPEN position (III) and do not use the primer bulb.
• Note: For a cold start, the choke must be in the CLOSED position, and for a hot start, the choke must be OPEN.
• Pull the starter (D) quickly to start the engine. Once the engine starts, do not release the starter; carefully return it to its initial position to avoid damage.
• For a cold engine, after starting, move the choke lever to the OPEN position (B²).
• Allow the engine to idle for a few seconds.
• Hold the tool by both handles with both hands to begin work.
• WARNING: Keep both feet firmly planted on the ground and both hands holding the tool by both handles.

Engine Shutdown

• Release the safety lock (E) and the throttle trigger (F).
• Set the switch to the OFF position (G).

Operation

• Keep a stable posture. Separate your feet to align them with your shoulders.
• Hold the auger with both hands. Your thumbs and fingers should grip the handles to ensure a proper hold. Your right hand holds the control handle and presses the safety lock (A) with the palm to activate the throttle trigger (B).
• Keep all parts of your body away from the auger when the engine is running.
• Place the bit at the point where you want to work and start drilling.

Drilling

• Press the throttle to start the auger spinning.
• Firmly hold the equipment by both handles in a vertical position on the ground without losing the vertical.
• Insert the auger into the ground to the required depth.
• Keep the auger rotating to remove it from the drilled hole.
• CAUTION: Be alert for any kickback that may occur if the auger encounters an obstacle.

Vibration

To reduce the risk of vibration injuries:

• Wear anti-vibration gloves to keep your hands warm.
• Keep the auger blades and drill in good condition. Dull blades will increase cutting time and vibrations transmitted to your hands.
• Maintain a firm grip at all times but do not constantly grip too tightly; take frequent breaks.
• All these precautions do not eliminate the risk of vibrations-related injuries or illnesses, such as carpal tunnel syndrome. Therefore, all operators should pay attention to their hands and fingers condition. If any discomfort appears, seek for medical attention and avoid using the equipment.

Maintenance

Periodic Maintenance

* Trained user or TRUPER® Authorized Service Center

** TRUPER Authorized Service Center

General Cleaning

• Use a brush or compressed air to clean and clear the ventilation slots of the starter unit whenever necessary.
• Periodically clean the engine cylinder fins and fan fins to remove any impurities. Failure to do so may cause the engine to overheat.

Air Filter Cleaning

• Remove the air filter cover by loosening the cover screw.
• Remove the air filter.
• Depending on usage time, you can give the filter a superficial cleaning by tapping it lightly on a smooth, flat surface to dislodge most particles.
• Alternatively, blow the filter with compressed air from both sides.
• For a more thorough cleaning, wash the air filter in warm soapy water, rinse it, and let it dry completely before reinstalling it.
• Reinstall the air filter, ensuring it fits securely in place.
• Clean the air filter as often as needed to keep it consistently clean; otherwise, the engine's efficiency may decrease.

Spark Plug Replacement

• The engine uses a Champion RCJ-6Y spark plug with an electrode gap of 0.63 mm (0.025”). Replace the spark plug with an identical new one once a year.
• With the engine completely cold, loosen the worn spark plug to the left with a wrench and remove it.
• Insert the new spark plug and hand-tighten it to the right.
• CAUTION: Be careful not to damage the spark plug thread; otherwise, serious damage to the engine may occur.

Exhaust and Muffler Cleaning

• The exhaust and muffler may become clogged with carbon deposits, depending on the type of fuel, amount of oil used, and/or usage conditions. If you notice a loss of power, these deposits should be removed to restore performance. Visit a TRUPER® Authorized Service Center to perform this service.
• The muffler is equipped with a spark arrester screen inside. After extended use, the screen becomes dirty and the muffler should be replaced. Visit a TRUPER Authorized Service Center to perform the replacement.
• CAUTION: Continuously check that the muffler is properly secured with fasteners and that there is no damage or corrosion. If a leak is found, stop the tool and immediately take it to a TRUPER® Authorized Service Center for repair.

Fuel Filter

• Regularly check the gasoline filter.
• If the filter is dirty, it should be replaced.
• If the inside of the gasoline tank is dirty, rinse it with gasoline.

Carburetor Adjustment

• It is recommended to have carburetor adjustments done at a TRUPER Authorized Service Center.
• Incorrect adjustment can damage the engine and void the warranty.

Lubrication

• The inside of the gearbox is lubricated with multi-purpose lithium-based grease. Visit a TRUPER Authorized Service Center to replace the grease every 50 hours of use.
• Insert the new grease through the grease valves located in the gearbox.

Tool Storage

If you plan to store the tool for a month or more, consider the following:

• Drain all fuel from the fuel tank into an approved gasoline container. Any excess should be reused in another two-stroke engine equipment with a 50:1 ratio.
• Run the engine until it consumes the remaining fuel and shuts off on its own to eliminate residual fuel and prevent the formation of clumps that could damage the fuel system.
• Clean the tool thoroughly.
• Store the unit in a ventilated space, away from corrosive agents such as garden chemicals or ice-melting salts, and out of reach of children.
• Comply with all government safety regulations for handling and storing fuels.

Troubleshooting

If problems persist despite performing the recommended corrective actions, contact a TRUPER® Authorized Service Center.

Notes

This section is for user notes.

Authorized Service Centers

In the event of any problem contacting a TRUPER Authorized Service Center, please see our webpage www.truper.com to get an updated list, or call our toll-free numbers 800 690-6990 or 800-018-7873 to get information about the nearest Service Center.

A list of authorized service centers is provided in the original document, detailing locations, contact information, and addresses across various states in Mexico.

Warranty Policy

Warranty Duration: 1 year.

Coverage: Parts, components, and workmanship against manufacturing or operating defects, except if used under conditions other than normal, not operated according to the instructions, or if altered or repaired by unauthorized personnel.

To make the warranty valid: Present the product, stamped policy, invoice, receipt, or voucher at the establishment where it was purchased, or at Corregidora 35, Centro, Cuauhtémoc, CDMX, 06060. Parts, components, consumables, and accessories can also be purchased at this location.

The warranty includes transportation costs of the product derived from its fulfillment within the service network.

Contact Information: Phone number 800-018-7873. For Jilotepec service center, call 761 782 9100.

Manufacturing Information: Made in China. Imported by Truper, S.A. de C.V. Parque Industrial 1, Parque Industrial Jilotepec, Jilotepec, Edo. de Méx. C.P. 54257.

Website: WWW.TRUPER.COM