WilTec 62350 User manual

Operation Manual
Ground Drill
62350, 62351
Illustration similar, may vary depending on model
Read and follow the operating instructions and safety information before using for the first time.
Technical changes reserved!
Due to further developments, illustrations, functioning steps and technical data can differ insignificantly.
Updating the documentation
If you have suggestions for improvement or have found any irregularities, please contact us.

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The information contained in this document may alter at any time without previous notice. It is prohibited
to copy or spread any parts of this document in any way without prior written allowance. All rights re-
served.
The WilTec Wildanger Technik GmbH cannot be held accountable for any possible mistakes in this
operating manual, nor in the diagrams and figures shown.
Even though, the WilTec Wildanger Technik GmbH has undergone biggest possible efforts to ensure
that the operating manual is complete, faultless and up to date, mistakes cannot be entirely avoided.
If you should find a mistake or wish to make a suggestion for improvement, we look forward to hearing
from you.
Send an e-mail to:
[email protected]
or use our contact form:
https://www.wiltec.de/contacts/
The most recent version of this manual in various languages can be found in our online shop via:
https://www.wiltec.de/docsearch
Our postal address is:
WilTec Wildanger Technik GmbH
Königsbenden 12
52249 Eschweiler
Germany
Do you wish to pick goods up? Our pick-up address is:
WilTec Wildanger Technik GmbH
Königsbenden 28
52249 Eschweiler
Germany
To shorten the waiting time and allow for a rapid on-site transaction, we ask you to call us previously or
placing your order via the webshop.
E-mail: [e-mail]
Tel:[phone]
Fax: [phone]
To return orders for exchange, repair or for other purposes, please use the following address. Attention!
To allow for a smooth execution of your complaint or return, it is important to contact our customer
service team before returning the goods.
Returns Department
WilTec Wildanger Technik GmbH
Königsbenden 28
52249 Eschweiler
E-mail: [email protected]o
Tel:[phone]
Fax: [phone]

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Introduction
Thank you for purchasing this quality product. To minimize the risk of injury we urge that our clients
take some basic safety precautions when using this device. Please read the operation instruc-
tions carefully and make sure you have understood its content.
Keep these operation instructions safe.
General information
Warning: If used correctly, this ground drill is a fast and powerful tool. However, inappropriate use turns
this tool into a source of danger. Therefore, make sure to abide by the instructions and information
stated within this operation manual in order to guarantee a safe and efficient operation.
Carefully read this operation manual, make sure to fully understand it and store it in a safe and dry
environment in order to be able to access it at any point in time. Non-compliance with the stated instruc-
tions or careless use of the device may lead to property damage and serve injuries.
Important: This operation manual contains information that have to be abided by in order to prevent the
device from malfunctioning and being damaged.
Warnings found on the device
Caution! Fire hazard!
Caution! Hot surfaces!
Caution! Toxic gas!
Wear ear protection.
Read the operation manual.

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Safety instructions
•The ground drill may only be used by individuals that have read this operation manual and are
familiar with the device.
•This device must not be used by children or individuals with reduced physical, sensory or mental
capabilities, or lack of experience and/or knowledge. Children should be supervised at all times
in order to ensure that they do not play with it.
•Do not operate the device while being exhausted, tired or under the influence of alcohol, drugs
or medication.
•Do not wear loose clothing or accessories, which could be gripped by the moving parts of the
drill. Long hair has to be tied up or covered with a snood-type cap, and protective clothes should
be worn.
•Always wear anti-skid shoes, work gloves, safety goggles as well as ear protection while oper-
ating the device.
•Ensure that bystanders are kept away from the working area while the device is in use. Distrac-
tions might lead to loss of control and cause severe accidents.
•Before the begin of the operation, make sure that the working area is clear. Do not drill in the
immediate vicinity of cables or pipelines.
•The ground drill is equipped with a combustion motor and must therefore be used in well venti-
lated areas and must be kept away from flammable or explosive substances.
•Only lift or carry the device, if it has been turned off and the auger stopped moving.
•Immediately replace the auger, if the same shows visual or acoustic signs of damage or wear.
•Only use two-stroke mixture with an appropriate petrol and oil mixing ratio of 25:1 to fuel the
device. Do under no circumstances use pure petrol or any other kind of fuel.
•Only start refuelling the device after its motor has been turned off and be careful in order to
avoid the contact between fuel and hot surfaces of the device. Do not smoke during the process
of refuelling and make sure to keep any kind of ignition source away from the working area.
•Only open the fuel tank cap while the motor is turned off and make sure to close it properly
before turning it on again.
•Always keep the handles dry and clean in order to minimise the risk of loss of control.
•Always check the auger for visible signs of damage and make sure moving parts are not de-
formed or obstructed before operating the device.
•Only use the ground drill, if a secure footing is ensured.
•Do not touch the running motor of the device and never attempt to exchange a running motor.
•The auger is not allowed to rotate while running in idle mode.
•Always use both hands to operate the ground drill in order to ensure a maximum of control over
the device.
•Stay away from the Auger and the exhaust pipe of the drill while in operating it.
•Do not perform maintenance exceeding the superficial procedures and care. In-depth mainte-
nance and repairs may only be performed by qualified personnel.
•Always store the ground drill within a dry environment inaccessible to children. Make thereby
sure that its fuel tank is empty, that it is placed in a vertical position and not touching the ground.
•Check the device for damage or malfunctions before using it.
•When changing holes, make sure the ground drill is running in idle mode and the auger is not
rotating.
•Do not use defect, modified or provisionally repaired devices and only use augers suitable for
the device.
•Never touch the spark plug or spark plug wire while the motor is operating. Touching either of
them while the motor is running carries the risk of electric shock.
•Do not operate the ground drill unless this operation manual has been read and understood and
its users have familiarised themselves with the device, its functions and fields of application.
•Before and after using the motor, let the device operate at low speed and without load for 2–
3 min. Do not use the device at full speed unless drilling with full load and never jerk the device
to halt when using it with higher speed settings.
•Do not touch the motor or the carburettor while or shortly after operation. Non-compliance bears
the risk of burns.

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•The device can only be disposed of at an official dumpsite or collection station. The device must
not be put into the domestic refuse.
•Clean and maintain the device on a regular basis and only use suitable spare parts of equal
quality.
Technical specifications
Gearing
Reduction gear ratio
40:1
Type
Double gearbox
Transmission mode
Centrifugal clutch
Auger size diameter (㎝)
8 / 10 / 15 / 20 / 25/ 30
Motor
Type
Air-cooled two-stroke engine
Maximum output (kW / rpm)
2.8 / 9000
Capacity (mℓ)
63.3
Idling speed (rpm)
2800 ± 150
Coupling (rpm)
3950 ± 150
Ignition type
Electric ignition (CDI)
Ignition system
Magneto
Carburettor type
Membrane
Fuel
Two-stroke mixture (Petrol:Oil = 25:1)
Fuel tank volume (ℓ)
1.45
Assembly
•Remove the device from its box and place it on the ground. Remove the nuts (Fig. 1, A) as well
as the two screws (Fig. 1, B) from the connection plate.
•Turn the right handle (Fig. 2, C) downward as depicted in fig. 2 and keep moving it until it
reaches the position shown in fig. 3.

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•Bring the handle bars into their operating positions by unfolding them and lock them in place by
screwing them to the connecting plate (Fig. 3) using the screws and nuts that were previously
removed.
•Connect the auger (Fig. 4, D) to the device by placing it onto the shaft (Fig. 4, E) and secure it
with the help of the bolt (Fig. 4, F) and the cotter pin (Fig. 4, G).

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№
Name
№
Name
№
Name
1
Motor
7
Left handle bar
13
Cotter pin
2
Control handle
8
Base plate
14
Bolt
3
Right handle bar
9
Gasket
15
Screw
4
Auger
10
Connecting plate
16
Nut
5
Handle
11
Fixture
17
Screw
6
Gearbox
12
Base plate
18
Screw

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№
Name
№
Name
1
Starter
6
Auger
2
Fuel tank
7
Control handle
3
Left handle bar
8
Right handle bar
4
Gearbox
9
Motor
5
Handle

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Getting started
Fuel mixing ratio
As depicted in fig. 7, the device has to be fuelled with two-stroke mixture with a petrol oil ratio of 1:25.
№
Name
№
Name
1
Two-stroke oil
2
Petrol (90 Octane)
Warning: Two-stroke engines are designed to operate with normal petrol. Therefore, make sure to only
use normal petrol and premium grade petrol with a minimum octane rating of 90 and oil specifically
designed for two-stroke engines. Mix the two liquids before pouring them into the motor and ensure that
the liquids have intermixed with each other before carefully inserting the fuel into the motor (Fig. 8).
Never fill the fuel tank while the motor is operating and instead ensure that the motor has been turned
off before placing the device on an even ground in order to prevent two-stroke mixture from spilling in
the process.

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Important! When storing the device, make sure that the fuel has been drained completely. Do not use
the device, if fuel should be leaking.
Starting the Motor
1. Bring the switch located on top of the control handle (Fig. 11, K) into the “Start” position.
2. Next press both the security switch (Fig. 11, L) and the throttle lever (Fig. 11, M). Lock them in
place by pressing the interlock (Fig. 11, N).
3. Once the interlock (Fig. 11, N) has been used, let go off the security switch (Fig. 11, L) and the
throttle lever (Fig. 11, M)
4. Set the inductor switch (Fig. 10, J) to “Open.”
5. Repeatedly press the primer (Fig. 9, H) in order to pump fuel into the system.
6. Repeatedly pull the rope start until the motor starts running.
7. Set the inductor switch (Fig. 10, J) back to the “Closed” position.
8. Once the motor is operating, press the throttle lever (Fig. 11, M) in order to unlock the interlock
(Fig. 11, N) and allow the device to run in idle mode.
Notes: Do not use the inductor if the engine is already warm. The inductor is only used to perform cold
starts. Also, the auger must not rotate while the motor is operating in idle mode.
Warning note: The motor has to be stopped immediately, if the auger should deform or break.
Note: When using the rope start:
•Do not let the rope rebound.
•Do not pull the rope as far as it will go, since this will damage the rope start.
•Always let the rope slide back slowly in order to allow it to roll up properly.

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Switching off the Motor
1. Place the throttle lever (Fig. 11, M) in idle position and let the device run in idle mode for 2–
3 min in order to allow the motor to cool down.
2. Turn the motor off by setting the switch (Fig. 11, K) to “stop.”
3. Remove the auger from the device and clean both.
Important: Do not jerk the device to halt while it is running with full load as this might damage the device.
Maintenance
Air filter
The air filter should be cleaned after every 25 hours of operation. In order for the air filter (Fig. 12/13,
R) to be cleaned, the air filter casing (Fig. 12-13, Q) has to be removed. Use petrol to clean the filter
and let it dry.
Carburettor
The carburettor is a very important component of the device. Its settings (such as mixing ratio and idling
drive power) have been pre-set by the manufacturer and should not be changed. Please note that
weather conditions as well as altitude may influence the functions of the carburettor.
Petrol filter
Make sure to regularly check the petrol filter (Fig. 14, U) and replace it immediately, in case of it being
heavily polluted. A polluted petrol filter may cause issues while starting the device as well as a loss of
performance.

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Motor
Make sure to regularly clean the cylinder fins with air pressure or a brush. Polluted cylinder fins severely
affect the internal cooling system of the motor and might damage it.
Spark plug
Remove the spark plug wire and unscrew the spark plug. Clean both, the spark plug as well as the spark
plug wire, if dirt should have accumulated. Sand the electrode with sand paper and set the distance of
the electrode to 0.6–0.7 mm (Fig. 15, V).
Auger
Check the condition of the auger before every use and sharpen or replace it, if necessary. Always make
sure to choose the auger according to the requirements of the task at hand (Fig. 16).

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Reduction gear
If used normally, the valve cap (Fig. 17, W) has to be checked and cleaned after every 50 hours of
operation. Every 100 hours of operation, the gear grease has to be exchanged (Fig. 17, 1; 180 g).
Storage
•Always perform maintenance in accordance with the previously stated maintenance steps.
•If the ground drill should be stored for longer periods of time, make sure to clean it thoroughly
and to grease all metal parts in order to prevent corrosion.
•Remove the auger from the device and clean and lubricate both components in order to pre-
vent rust.
•Completely drain the fuel from the device and properly attach the tank cap once the procedure
of draining has been completed.
•Remove the spark plug (Fig. 18, V) and insert some oil into the cylinder.
•Pull the rope start a few times after applying oil and rotate the crankshaft in order to distribute
the oil.
•Reinsert the spark plug (Fig. 18, V).
•In order to protect the device from dust and other forms of pollution, wrap it into a plastic bag
or foil.
•Store the ground drill within a dry environment inaccessible to children. Make thereby sure
that it is stored with sufficient distance to the ground and potential heat sources.

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Troubleshooting
Ignition problems
Problem
Possible cause
Solution
Ignition (no igni-
tion spark)
Spark plug
Spark plug is polluted / wet
Clean and dry.
Dirt accumulation on the spark plug
Clean.
Distance between electrodes is too
small / large
Set distance to 0.6–
0.7 mm
Electrode burnt out
Replace the spark plug.
Insulation is damaged
Replace the spark plug.
Magneto
Cable is broken / damaged
Replace.
Insulation of the coil is damaged
Replace.
Distance between stator and rotor is
too large
Set distance to 0.4 mm.
Spark plug
functions
Compression and
fuel supply work
Too much fuel
Drain some fuel.
Two-stroke mixture is old / polluted /
watery
Drain completely and re-
place.
Working fuel sup-
ply, but insufficient
compression
Cylinder and piston ring are worn
Replace worn out parts.
Fuel tank is empty
Refuel.
Carburettor is not
supplied with fuel
Fuel supply is closed
Open the supply.
Fuel valve is clogged
Clean the valve.
Loss of performance
Problem
Possible cause
Solution
Functional compression
with ignition spark
Fuel tank draws air
Properly close the fuel cap.
Carburettor hose draws air
Fasten or replace the gasket.
Fuel is watery
Replace the fuel.
Filter plate is clogged
Clean the filter plate.
Exhaust pipe / cylinder is polluted
Clean.
Motor overheats
Fuel is too thin
Set the carburettor.
Cylinder is polluted
Clean the cylinder.
Motor is very noisy or
stutters
False petrol oil mixing ratio
Drain fuel and replace.
Combustion chamber is polluted
Clean combustion chamber.
Moving parts are worn
Check and replace worn parts.

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Motor shuts down while operating
Problem
Possible cause
Solution
Motor suddenly stops operat-
ing
Piston is blocked / torn
Repair or replace the piston.
Short circuit due to polluted spark
plug
Clean the spark plug.
Magneto is defect
Have the magneto be repaired or re-
placed.
The motor slowly turns off
Not enough fuel
Refuel.
Carburettor is polluted
Clean the carburettor.
Fuel is watery
Drain and replace the fuel.
Other problems
Problem
Possible cause
Solution
Motor operates, but au-
ger does not rotate
Coupling is damaged
Replace the coupling.
Auger does not properly fit the gearbox
Replace with a fitting auger.
Gearbox emits unusual
noises
Gearbox is worn
Replace the worn parts.
Insufficient lubrication
Clean and grease the device.
Pollution inside the gearbox
Clean and grease the gearbox.
Important! Maintenance work not listed in this manual should only be carried out by qualified personnel.
Only original parts of the same quality should be used for repairs. No responsibility is assumed for
damage caused by improper maintenance or use.
Important notice:
The reprint or reproduction, even of excerpts, and any commercial use, even in part, of this instruction
manual require the written permission of WilTec Wildanger Technik GmbH.