Sherpa ST-GD520 User manual

Sherpa Tools Ltd.
ST-GD520 EARTH AUGER
If you experience any problems with this product,
please do not return to the store. Contact Sherpa
Tools direct on our UK helpline.
UK Helpline: 01522 283 020
www.sherpatools.co.uk Feb 2016

02
S
Sy ym mb bo ol ls s o or ri ig gi in na al l i in ns st tr ru uc ct ti io on ns s
Potential hazard or hazardous situation. Failure to
observe these instructions may lead to injuries or
cause damage to property.
L
Important information on proper handling. Failure
to observe these instructions may lead to malfunction.

User information. This information helps you to use
all the functions optimally.
Assembly, operation and servicing. Here you are
explained exactly what to do.
C
Important notes for evironmentally compatible
conduct. Failure to observe these instructions may
lead to environmental damage.
Â
Â
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Please refer to the attached assembly and operating
instruction sheet for references to figure numbers in
the text.
S
Sy ym mb bo ol ls s o on n t th he e m ma ac ch hi in ne e
Read and follow the operating instructions and
safety advices before starting up the machine.
Warning! This earth auger may cause serious
injury.
Danger – objects may be thrown out at high
speed. Keep bystanders away. Safety distance at
least 15 m.
Wear hardhat, eye and ear protection.
Wear protective gloves.
Wear safety shoes.
Protect against humidity.
Do not reach in rotating parts.
Petrol and oil are a fire hazard and can explode.
Fire, open light and smoking are prohibited.
Risk of carbon monoxide poisoning.
Do not start or operate the engine in closed
rooms even if doors and windows are open.
Fuel, fuel mixture (40:1)
Engine switched off (STOP)
Engine started I
OFF Choke closed
ON
Choke open
Open the venting valve before starting the engine to prevent
damages to the gearbox. After completion of your work, allow
the gearbox to cool down first. Close then the venting valve.
Warning of hot surfaces.
Danger of burning!
Do not touch hot engine parts. Such parts may
remain hot for a short time even after the machine
has been stopped.
This product complies with European regulations
specifically applicable to it.
O
Op pe er ra at ti in ng g t ti im me es s
Please observe as well the regional regulations for noise
protection.
P
Pr ro op pe er r u us se e
•
This machine is only intended for drilling cylindrical holes in
soil (loam, topsoil, sand or the like) in private home and
hobby gardens. This includes holes for planting small trees,
for installing fencing posts or the like. This gasoline engine
driven earth auger may only be used in its vertical position
(drill facing downwards).
•This machine is only designed for outdoor use (garden) and
must be held with both hands during operation.
•The device is not allowed to be used in public gardens,
parks, sports centres or at roadsides as well as in
agriculture and forestry.
This device may not be used:
− in ice, stone or rock
−
in areas where electric cables, gas, water or telephone
lines are buried
Otherwise, there is a risk of injury.
• Always use drills suited for the machine as designated in
the operating instructions.
•The intended usage also includes compliance with the
operating, servicing and repair conditions prescribed by the
manufacturer and following the safety instructions included
in the instructions.
•
Any other utilisation counts as improper use,
especially mixing combustible or explosive materials (
fire and explosion hazard) and use with foodstuffs. The
manufacturer is not liable for damages resulting from
improper use.
the user alone shall bear the risk.

03
•The intended usage also includes compliance with the
operating, servicing and repair conditions prescribed by the
manufacturer and following the safety instructions included
in the instructions.
•The relevant accident prevention regulations for the
operation as well as the other generally acknowledged
occupational medicine and safety rules must be complied
with.
•Unauthorised modifications on the earth auger exclude a
liability of the manufacturer for damages of any kind
resulting from it.
•Only persons who are familiarised with the device and
informed about possible risks are allowed to prepare,
operate and service this device. Repair works may only be
carried out by us or by a customer service agent nominated
by us.
R
Re es si id du ua al l r ri is sk ks s
Even if used properly, residual risks can exist even if the
relevant safety regulations are complied with due to the design
determined by the intended purpose.
Residual risks can be minimised if the “Safety advices” and the
“Intended usage” as well as the whole of the operating
instructions are observed.
Observing these instructions, and taking proper care, will
reduce the risk of personal injury or damage to the equipment.
•Inhalation of dust (soil)
•Contact of the skin with operating substances (gasoline/oil)
•Noncompliance with safety instructions may result in
injuries of the operator or property damages.
•Risk of serious injuries when operating the machine without
suited protective equipment.
•Risk of injury by entangling and winding up ropes, wires or
pieces of clothing when contacting the auger.
•Risk of injury by kickback of the handles when the auger
suddenly stops.
•Risk of electric shock when touching the spark plug
connector while the engine runs.
•Risk of thrown out object, e.g. stones.
•Risk of burns when touching hot parts.
•Carbon monoxide poisioning when using the product in
closed or poorly ventilated rooms.
•Risk of fire and explosion by highly inflammable fuel, e.g.
during fuelling.
•Physical impairment by vibrations when working with the
machine over a longer period of time.
•Impairment of hearing when working on the machine for
longer periods of time without ear protection.
In addition, in spite of all the precautionary measures
taken, non-obvious residual risks can still exist.
V
Vi ib br ra at ti io on ns s
(
(h ha an nd d a ar rm m v vi ib br ra at ti io on ns s) )
21.206 m/s²; K = 1.5 m/s²
Warning!
The actual vibration emission level during the use of the
machine may differ from that indicated in the operating
instructions or indicated by the manufacturer. This may be
caused by the following factors to be minded before and during
the use:
-
Proper use of the machine
-Correct operating of the machine
-Proper condition of the machine for use
- Use of the correct and sharp cutting tool
-Handles and optional anti-vibration handles properly
mounted on the machine body
When you feel uncomfortable or notice discoloration of skin on
your hands during the use of the machine, stop working
immediately. Observe sufficient break times to rest. Failure to
have sufficient break times may result in a hand-arm vibration
syndrome.
The extent of exposure depending on the type of work or
machine use should be estimated and appropriate breaks
taken. In this way, the extent of exposure can be considerably
reduced over the entire work time. Minimise the risk caused by
vibrations. Maintain this machine according to the instructions
in the manual.
If you intend to use this machine frequently, contact your local
authorised dealer and purchase anti-vibration accessories if
required.
Avoid the use of this machine at temperatures under 10°C.
Create a work schedule in order to minimise vibration exposure.
S
Sa af fe et ty y a ad dv vi ic ce es s
Observe the following advices in order to protect yourself
and other persons against possible injuries.
Before starting this device, read and keep to the following
advice. Also observe the preventive regulations of your
professional association and the safety provisions
applicable in the respective country, in order to protect
yourself and others from possible injury.
L
Pass the safety instructions on to all persons who work
with the machine.
L
Keep these safety instructions in a safe place.
Repair works on the safety cut out must be carried out by
the manufacturer or by companies appointed by the
manufacturer respectively.
•Make yourself familiar with the equipment before using it, by
reading and understanding the operating instructions.
•Do not use the machine for unsuitable purposes (see
'Normal intended use').
•Be careful what you do. Behave sensibly when working. Do
not use the device when you are tired or under the influence
of drugs, alcohol or medicaments. One moment of

04
carelessness when using the device can result in serious
injuries.
•Children and young persons under 18 years of age as well
as persons who have not read the instruction manual are not
allowed to operate this product.
P
Pe er rs so on na al l p pr ro ot te ec ct ti iv ve e e eq qu ui im me en nt t
•Never work without suited protective equipment.
−Do not wear loose-fitting clothes or jewellery, they could
be caught by movable parts.
−Hairnet in case of long hair
−Approved helmet in situations where head injury has to
be expected
−Visor
−ear protection
−Anti-slipping cut-proof boots (safety shoes) with steel-
toes
−Fire extinguisher and spade (sparks may occur during
working)
−First-aid material
−Mobile telephone if required
S
Sa af fe et ty y i in ns st tr ru uc ct ti io on ns s – – b be ef fo or re e w wo or rk ki in ng g
Carry out the following checks before the initiation and
regularly during the working process. Observe the relevant
sections in the operating instruction manual:
•Is the device assembled completely and properly?
•Is the device in good and safe condition?
•Are the handles clean and dry?
•Before starting your work make sure that:
−no other persons, children or animals stay within the
working area,
−you can always step back without any barriers,
−your standing area is free from foreign objects,
brushwood and branches,
−you have always a secure standing position.
•Is workplace free of risks to stumble? Keep your workplace
in an orderly condition! Untidiness can result in accidents.
Risk of stumbling.
•Take environmental influences into consideration:
−Do not work under insufficient light conditions (e.g. fog,
rain, snow flurry or twilight).
−Do not use this machine near inflammable liquids or
gases. Risk of fire!
−The operator is responsible for accidents or risks which
occur to other persons or their properties.
S
Sa af fe et ty y i in ns st tr ru uc ct ti io on ns s – – o op pe er ra at ti in ng g
•Never work with only one hand. Hold the device always
firmly with both hands.
•Never work
−with stretched arms
−on hardly accessible places
−above shoulder height
−standing on a ladder, a staging or a tree.
•Always work on nonskid and flat ground.
Avoid abnormal posture. Provide a safe standing position
and keep at any time the balance.
•To have a break stop the machine and place it so that
nobody is at risk. Secure the device against unauthorized
access.
S
Sa af fe et ty y i in ns st tr ru uc ct ti io on ns s – – w wh hi il le e w wo or rk ki in ng g
•Never work alone. Keep acoustic and visual contact to
other persons at all times to allow immediate first aid in
emergency cases.
•Immediately stop the engine at imminent danger or in
emergency cases.
•Never leave the device running unattended.
•This device chain saw produces harmful
substances. Never start the product in closed
rooms or poorly ventilated areas risk of carbon monoxide
poisoning. Provide for a sufficient change of air when
working in wells, trenches or confined spaces. There is the
risk of carbon monoxide poisoning or death by
suffocation.
•Immediately stop working when you feel unwell (e.g. head-
ache, dizziness, nausea, etc.). Otherwise there is an in-
creased risk of accidents.
•Do not overload the machine! You work better and safer in
the given performance range.
•Take breaks when working so that the engine can cool
down.
•Do not place a hot machine in dry grass or onto inflammable
objects.
•Never touch the silencer and the engine while the machine is
running or shortly after it was stopped. Danger of burning!
G
Ge en ne er ra al l s sa af fe et ty y i in ns st tr ru uc ct ti io on ns s
•Maintain the machine carefully:
−Follow the maintenance instructions and the instructions
for tool exchange.
−Keep handles dry and free of oil and grease.
 Only assemble tools that are designed for this machine.
The use of other tools and other accessories may
present a risk of injury to you.
•Check the machine for possible damage:
−Before further use of the machine the safety devices must
be checked carefully for their proper and intended
function. Only operate the device with complete and
correctly attached safety equipment and do not alter
anything on the device that could impair its safety.
−Check whether movable parts function perfectly and do
not stick or whether parts are damaged. All parts must be
correctly installed and fulfil all conditions to ensure perfect
operation of the machine.
−Damaged safety devices and parts must be properly
repaired or exchanged by a recognized, specialist
workshop; insofar as nothing else is stated in the
instructions for use.
−Damaged or illegible safety labels have to be replaced.

05
•Do not allow any tool key to be plugged in!
Before switching on, check always that all tools are
removed.
•Store unused equipment in a dry, locked place out of the
reach of children.
•Stop the machine and remove the spark plug connector
when
−the auger drill comes in contact with stones, nails or other
foreign objects
−Carrying out repair work.
−Performing maintenance and cleaning work.
−Eliminating faults.
−transporting or storing
−Changing the auger drill
−Leaving of machine (also for short-term interruption)
Do not carry out repair operations on the machine other
than those described in section “Maintenance” but contact
the manufacturer or authorized customer service centres.
Repairs to other parts of the machine must be carried out
by the manufacturer or one of his customer service points.
Use only original spare parts, accessories and special
accessory parts. Accidents can arise for the user through
the use of other spare parts. The manufacturer is not
liable for any damage or injury resulting from such action.
S
Sa af fe et ty y i in ns st tr ru uc ct ti io on ns s f fo or r t th he e e ea ar rt th h a au ug ge er r

Make sure that the auger drill does not rotate when the
engine is idling. Contact the customer service if the auger
drill rotates with idling engine.
Make sure that no electric cables, water and gas pipes are
buried in the soil of the working area.
Check that no loose stones or other objects lie on the soil in
the working area.
 Remove high grass, shrubs, etc. from the working area.
There is the risk that they are wound up by the auger drill.

Take utmost care when working in soil containing a lot of
roots and/or stones. There is the risk of a sudden jamming
of the earth auger.

Do not use the earth auger on uneven ground or on a
slope.

Do not use the earth auger on icy or other slippery
surfaces.

Stop the engine and allow it to cool down if the earth auger
drill is jammed. Then, try to remove it manually.

Do not use a gasoline engine driven earth auger the switch
of which is defective. A gasoline engine driven earth auger
that can no longer be switched on/off is dangerous and
must be repaired.

Keep the auger drills in a sharp and clean condition.
Carefully maintained tools with sharp cutting edges show
less jamming and can be easier operated.

Use the machine, accessories, tools etc. in compliance with
these instructions. When doing so take the work conditions
and the activity to be carried out into account. The use of
the machine for other than the intended applications may
cause dangerous situations.

Check the machine before each use and after any
contact with stones, nails or other foreign objects for
damages. Have the device repaired if required.
Always keep your hands and feet away from the auger drill,
in particular when starting the engine.
B
Be eh ha av vi io ou ur r i in n a an n e em me er rg ge en nc cy y s si it tu ua at ti io on n
Initiate all required first aid measures suited for the injury
and seek qualified medical advice as quick as possible.
Protect the injured person against further injuries and
immobilise the injured person.
S
Sa af fe et ty y i in ns st tr ru uc ct ti io on ns s - - S Sa af fe e h ha an nd dl li in ng g w wi it th h f fu ue el ls s
Fuels and fuel vapours are inflammable and may
cause serious injury on the skin or when inhaled.
Therefore be careful and provide sufficient
ventilation when handling with fuels.
•Do not smoke and avoid open flames when fuelling.
•Wear gloves when fuelling.
•Do not fuel in closed rooms.
•Stop the chain saw and allow it to cool down.
•Carefully open the tank cap to allow possible overpressure
to relax.
•Avoid spilling of fuel or oil. Clean the device immediately
when you have spilled fuel or oil. Change your clothes
immediately when you have spilled fuel or oil on them.
Make sure that no fuel can come into the soil.
•Carefully close the tank cap after fuelling and check that it
does not get loose during operation.
•Check that there is no leakage on the tank cap and fuel
lines. If there are leaks this product may not be started.
•Never use a device with damaged ignition cable and spark
plug connector.
•Only transport and store fuels in containers approved and
identified for this.
•Keep children away from fuels.
•Do not handle and store fuels close to combustible and
highly inflammable materials as well as sparks and open
flames.
•Go away at least three metres from the fuelling place to start
the chain saw.

06
D
De es sc cr ri ip pt ti io on n o of f d de ev vi ic ce e

08

09

10
Pos. Denomination
1
Drive unit
2
Auger drill Ø 100 mm
3
Auger drill Ø 150 mm
4
Auger drill Ø 200 mm
5
Venting valve
6
Operating handle
7
Handle
8
Throttle lever lock
9
Throttle trigger
10
ON/OFF switch
11
Locking pin
12
Priming pump Â
13
Choke lever
14
Cranking handle
15
Air filter housing
16
Air filter Â
17
Spark plug connector
18
Spark plug Â
19
Silencer Â
20
Tank cap
21
Fuel filter Â
22
Tank
23
Spark plug socket spanner
24
Installation wrench
25
Allen key, size 4
26
Allen key, size 5
27
Allen key, size 6
28
Open-end wrench, size 8/10
29
Fuel mixing bottle
30
Safety label 1
31
Safety label 2
32
Accessories bag - Installation tools
33
Cylinder head screw M 8 x 40 Â
33
Cylinder head screw M 8 x 50 Â
34
Self-locking hexagon nutÂ
35
Protective cover
36
Air filter cover Â
37
Escape opening Â
38
Oil level indicator
A
As ss se em mb bl ly y
Clamping the auger drill:
Â/ Plug one of the auger drills (2-4) on the shaft of
the drive unit (1). Plug the cylinder head screw (33) through
the auger drill and the drive shaft. Secure the cylinder head
screw
using the hexagon nut (34).
P
Pr re ep pa ar ri in ng g f fo or r s st ta ar rt tu up p
F
Fu ue el ll li in ng g
Utmost care is required when handling fuel and
oil. Keep away smoke and open flames (risk of
explosion).
This product is operated by a mixture from regular
gasoline (unleaded) and two-stroke engine oil.
Petrol: Octane number at least 91 ROZ unleaded
•Do not fill in leaded gasoline, diesel or other non-approved
fuels.
•Do not use gasoline having a smaller octance number than
91 ROZ. This may lead to severe engine damages due to
increased engine temperatures.
•If you frequently operate the product at high speeds, you
should use gasoline with a higher octane number.
CThe use of unleaded gasoline is recommended for
environment protection reasons.
Two-stroke engine oil:
acc. to JASO FC or ISO EGD specifications
•Do only use two-stroke engine oil for air-cooled engines.
M
Mi ix xi in ng g
Ratio of mixture 40:1
Gasoline Two-stroke engine oil
1 litres 0.025 litres
2 litres 0.050 litres
5 litres 0.125 litres
10 litres 0.250 litres
•Measure the oil quantity accurately as a small deviation of it
has a large effect on the ratio of mixture in particular for
small fuel quantities.
•Do not change the ratio of mixture. This will lead to more
residues of combustion, a higher fuel consumption, a
decrease of output or damages to the engine.
Mix petrol and oil in the supplied fuel mixing bottle (29).
•Fuels have only a limited shelf-life. Outdated fuels and fuel
mixtures may result in starting problems. Therefore, mix only
that quantity of fuel which you can use within a month.
•Only store fuels in containers approved and identified for
this. Keep fuel containers in a dry and safe area.
•Make sure that fuel containers are kept out of the reach for
children.
CMake sure to dispose of fuel remainders and liquids
used for cleaning according to relevant regulations and in an
environmentally compatible manner.

11
F
Fu ue el ll li in ng g o of f t th he e d de ev vi ic ce e
•Stop the engine and allow it to cool down.
•Wear protective gloves.
•Avoid eye and skin contact.
•Strictly follow the instructions under ”Safe
handling with fuels”.
ÂClean the area around the filler neck. Contamination in the
tank may result in malfunction.
ÂCarefully open the tank cap (20) to allow possible
overpressure to relax.
ÂShake the container once more before pouring the fuel
mixture into the tank.
ÂCarefully fill the fuel mixture up to the lower edge of the filler
neck. Avoid spilling of fuel or oil. Clean the device
immediately when you have spilled fuel or oil.
Make sure that no fuel can come into the soil.
ÂCarefully close the tank cap after fuelling and check that it
does not get loose during operation.
ÂCheck that there is no leakage on the tank cap and fuel
lines. If there are leaks this product may not be started.
ÂClean the tank cap and the area around it.
Go away at least three metres from the fuelling place to
start the chain saw.
S
St ta ar rt t- -u up p
Check that the machine is completely and correctly
assembled.
Before each use, check
the correct assembly of the drill
-the machine for possible damage
-loose fastenings
ÂMake sure that the ON/OFF switch, the throttle lock-out
switch, the throttle trigger and the machine properly work.
L
The engine of the machine is supplied without gasoline
and oil in it. Fuel the device as described under ”Fuelling”.
ÂOpen the venting valve (5) before starting the engine
to prevent damages to the gearbox.
When starting make sure that the drill can freely rotate.
S
St ta ar rt ti in ng g w wi it th h c co ol ld d e en ng gi in ne e
ÂFirmly press on the fuel pump (12) several times until
petrol (gasoline)/foam is visible in the priming pump.
ÂPut the choke lever (13) to ON .
ÂPut the ON/OFF switch (10) to .
ÂPress the throttle lock-out switch (8) and operate the throttle
trigger (9) at the same time.
ÂLock the throttle lever using the locking pin (11).
ÂGrasp the cranking handle (14) and slowly pull the
cranking rope until a resistance is felt. Then, pull quickly
and firmly.
Do not fully pull out the cranking rope and slowly
guide the cranking handle back to make sure that
the cranking rope is correctly wound up.
Repeat this operation until the engine starts.
ÂPut the choke lever (13) halfway back when the engine
has started.
L
The engine will idle when you release the throttle
trigger.
ÂWhen the engine runs smoothly put the choke lever
(13) to OFF.
ÂAllow the engine to warm up for 30 seconds before starting
your work.
S
St to op pp pi in ng g t th he e e en ng gi in ne e
 Release the throttle trigger (9).
Put the ON/OFF switch (10) to the position .
S
St ta ar rt ti in ng g w wi it th h w wa ar rm m e en ng gi in ne e
Start the device as described under “Starting with cold engine”,
but leave the choke lever in its operating position OFF and do
not operate the throttle trigger.
W
Wo or rk ki in ng g i in ns st tr ru uc ct ti io on ns s
You may not start to operate the machine until you
have read these operating instructions, observed all the
instructions given and installed the machine as described!
W
Wo or rk ki in ng g w wi it th h t th he e e ea ar rt th h a au ug ge er r
 Only use auger drills recommended by the manufacturer.
Pay attention to the max. diameter.

Put your feet shoulder-width apart and firmly grasp the earth
auger on both handles.
 Start the drilling with "half throttle" and gradually increase
the speed so that the drill penetrates into the soil without
any problems.
 Drill holes without exerting too much body weight on the
auger. Allow the auger to advance by its own weight.

If the auger drill is jammed in the soil and cannot be pulled
out, stop the engine and turn the earth auger
counterclockwisely.
 The clutch may still slip during the run-in time of approx. 2
operating hours. Make sure that the clutch is free from oil or
moisture.

After completion of your work, allow the gearbox to
cool down first. Do not place the unit horizontally for cooling.
Otherwise, hot fluid can escape. Close then the venting
valve.

12
M
Ma ai in nt te en na an nc ce e a an nd d c cl le ea an ni in ng g
Before each maintenance and cleaning work
−Stop the engine.
−Wait until the cutting device does not longer
move.
−Remove the spark plug connector.
−Wear protective gloves in order to avoid injury to
the hands.
−Do not carry out maintenance work close to
open flames. Risk of fire.
Maintenance and repair work other than those described in this
chapter is only allowed to be carried out by service staff.
For maintaining and cleaning, removed security devices must
unconditionally be mounted properly and proved again.
Only use genuine spare parts. Other than genuine parts may
result in unpredictable damages and injury.
M
Ma ai in nt te en na an nc ce e
The tool will not come to a standstill immediately after cut-off.
Before starting any service work wait until all parts are
stationary.
To guarantee a long and reliable usage of the product
carry out the following maintainance works regularly.
Check the device for obvious defects such as
−loose fastening elements
−worn or damaged components
−correctly assembled and faultless covers and protective
devices.
Necessary repair works or maintainance have to be carried
out before using the machine.
C
Cl le ea an ni in ng g t th he e a ai ir r f fi il lt te er r
Clean the air filter from dust and dirt on a regular basis to
prevent
−starting problems
−loss of output,
−too high fuel consumption.
Clean the air filter every 8 operating hours, or more frequently
in dusty environments.
ÂPut the choke lever to the position ON to prevent dirt
from entering the carburetor.
ÂRemove the screw from the air filter housing (15) and
remove the air filter housing.
ÂRemove the air filter cover (36).
ÂRemove the air filter (16).
ÂWash the air filter in a luke warm soapy solution.
Do not puff/blow out dirt particles, otherwise there is a
risk of eye injury.
ÂAllow the air filter to dry well and reinsert it.
L
Damaged air filters must be replaced without delay.
C
Cl le ea an ni in ng g/ /r re ep pl la ac ci in ng g t th he e f fu ue el l f fi il lt te er r
Check the fuel filter if required. A contaminated fuel filter
restricts the fuel supply.
ÂOpen the tank cap (20) and pull the fuel filter (21)
through the opening using a wire hook.
⇒Slight contamination:
Pull the fuel filter from the fuel line and clean it in petroleum
ether.
⇒Bad contamination:
Replace the fuel filter.
C
Ch he ec ck ki in ng g/ /r re ep pl la ac ci in ng g t th he e s sp pa ar rk k p pl lu ug g
- Do not touch the spark plug or the spark plug
connector while the engine is running. High voltage!
- Risk of burning on the hot engine.
-Wear protective gloves.
Check the spark plug and the spark gap on a regular basis. For
this proceed as follows:
Allow the engine to cool down.
Â
Pull the spark plug connector (17) from the spark plug
(18).
ÂRemove the spark plug using the supplied spark plug
socket spanner (23).
The spark gap must be 0.6 to 0.7 mm.
ÂClean the spark plug when it is contaminated.
Install the spark plug in reverse order.
Do not overtighten the spark plug.
Replace the spark plug:
-
every 100 hours or each season (whichever case comes first)
- when the insulating body is damaged,
- when the electrodes show excessive erosion,
- when the electrodes show excessive dirt or oil.
Use the following spark plug type:
Torch L8RTC, NGK-BPMR 7 A, BOSCH WSR6F,
OREGON O-PR15Y, Champion RCJ 6Y
C
Ch he ec ck ki in ng g t th he e i ig gn ni it ti io on n s sp pa ar rk k
 Remove the spark plug (18).
Firmly connect the spark plug connector (17).
Â
Use an insulated pair of tongs to press the spark plug
against the engine body (away from the spark plug hole).
ÂPut the ON/OFF switch to the position .
Pull the cranking rope.
L
If there is no spark visible between the electrodes, the
spark plug may be defective.

13
S
Si il le en nc ce er r/ /e ex xh ha au us st t o ou ut tl le et t
Â
Check the silencer (19) on a regular basis
L
Clean the exhaust outlet (37) on a regular basis.
Do not clean the silencer when the engine is hot. Dan-
ger of burning!
A
Ad dj ju us st ti in ng g t th he e c ca ar rb bu ur re et to or r ( (i id dl le e s sp pe ee ed d) )
The carburetor is factory-set to the correct idle speed so that
the correct fuel-air mixture is fed to the engine.
In the cases below the carburetor (idle speed) has to be
corrected:
- Speed too high (auger drill continues to move in idle speed)
- Erratic running or lack of acceleration (idle speed too low)
- Adjustment to weather conditions and temperatures
An incorrect carburetor adjustment results in
severe engine damages. Do not continue working
with the machine in such a condition.
LContact a specialist workshop and have the
carburetor adjustment done.
C
Ch he ec ck ki in ng g t th he e g ge ea ar rb bo ox x o oi il l l le ev ve el l / / r re ef fi il ll li in ng g g ge ea ar rb bo ox x o oi il l
To check the oil level:
Place the earth auger vertically (work position).
 Check the oil level at the inspection window (38). Make
sure that the oil level is as shown in the figure:
Refilling gearbox oil
ÂRemove the venting valve (5).
Top up oil until the perfect / max. filling level is reached (do not
overfill). Use GL 85 W gearbox oil.
Re-install the venting valve (5) and tighten it.
C
Cl le ea an ni in ng g
LClean the machine and its accessories thouroughly after
each application so that the faultless function is kept.
•
Clean all movable parts on a regular basis.
•
Clean the case with a soft brush or a dry cloth.
•
Do not clean the machine under running water or using a
high-pressure cleaner.
•
Do not use solvents (gasoline, alcohol, etc.) for plastic parts,
otherwise such parts may be damaged.
• Keep the handles free of oil and grease.
Water, solvents and polishing agents shall not be
applied.
• Â
Make sure that the ventilation slots (i) for the engine
cooling are free (risk of overheating).
• ÂKeep also the cooling fins for the cylinder (j) free from
dust and dirt.
T
Tr ra an ns sp po or rt t
Before each transport
−Switch off device.
−Wait until the cutting device does not longer
move.
Carry the product with the handle.
When transporting the product within a car put it in the boot
or on a separate loading area. Secure the machine against
tipping over, damages and fuel spillage.
S
St to or ra ag ge e

Keep unused machines in a dry and closed area out of the
reach of children. Do not store them close to a cooker, oven
or hot-water apparatus with permanent flame or other spark-
generating devices.
 Allow the engine to cool down before storing the machine.
 Before extended storage, please observe the following to
increase the service life of the device and to ensure smooth
operation:
ÖThoroughly clean the device.
ÖOil all moving parts with environmentally compatible oil.
LDo not use grease.
ÖEmpty the fuel tank completely.
C
Dispose of remaining fuel in an environmentally
compatible manner.
ÖOperate the engine until the carburetor is empty.
ÖCheck the machine for perfect condition to ensure a safe
use of it after a longer period of storage.

14
M
Ma ai in nt te en na an nc ce e a an nd d c cl le ea an ni in ng g s sc ch he ed du ul le e
Maintenance work
Before
each use
After
each use
Every
8 Std.
Every
25 Std.
Every 100
hours
IfIf
required /
damaged
Each
season
Fuelling �
Throttle trigger / throttle lock-out
switch / ON/OFF switch –
Functional test
�
Throttle trigger / throttle lock-out
switch / ON/OFF switch –
Have it replaced
�
Cranking rope - Functional test �
Cranking rope
Have it replaced
�
Check the fuel tank caps �
Replace
�
Clean fuel filling filter ���
Clean the fuel filter �
�
Replace air filter �
Cleaning the air filter �
�
Replace air filter �
Spark plug
Check the spark plug connector
� �
Replace the spark plug ��
Clean the silencer �
�
Check the carburetor in idle speed
(drill may not rotate)
� �
Have this adjusted �
Check the machine �
�
Clean the machine �
�
Replace the safety label �
Checking the gearbox oil level �
Refilling gearbox oil �

15
P
Po os ss si ib bl le e f fa au ul lt ts s
Before each fault elimination:
−Switch off device.
−Wait until the cutting device does not longer move.
−Remove the spark plug connector.
−Wear gloves.

After each fault clearance, put into operation and recheck all security installations.
Fault code Possible cause Corrective action
Motor does not start ÂIncorrect starting sequence
ÂAir filter contaminated.
ÂFuel filter fouled
ÂNo fuel supply
ÂFault in the fuel line
ÂCranking mechanism defective
ÂEngine flooded.
ÂSpark plug connector not placed on.
ÂNo ignition spark.
ÂEngine defective.
ÂCarburettor defective
ÂObserve the correct starting sequence
ÂClean or replace the air filter
ÂClean or replace the fuel filter
ÂFill the fuel tank.
ÂCheck the fuel line for kinks or damages
ÂContact the customer service
ÂScrew off, clean and dry the spark plug. Then pull the
cranking rope several times and reinstall the spark
plug
ÂPlace on the spark plug connector.
Âa) Clean or replace the spark plug.
b) Check the ignition cable.
c) Fault cannot be eliminated?
Contact the customer service
ÂContact the customer service
ÂContact the customer service
Engine starts and is
stalled immediately
ÂIncorrect idle adjustment
ÂContact the customer service
Chain saw works with
interruptions
ÂCarburretor incorrectly adjusted
ÂSpark plug fouled
ÂContact the customer service
ÂClean or replace the spark plug Check the spark plug
connector
Smoke
ÂIncorrect fuel mixture
ÂCarburretor incorrectly adjusted
ÂUse two-stroke oil, ratio of mixture 40:1
ÂContact the customer service
Machine does not work
with full performance
ÂMachine overloaded.
ÂAir filter contaminated
ÂCarburretor incorrectly adjusted
ÂSilencer blocked
ÂSoil too tough
ÂClean or replace the air filter
ÂContact the customer service
ÂClean the outlet of the silencer
Drill rotates at idling ÂIdle speed too high
Â
Clutch spring broken
ÂAdjust a lower idle speed
ÂReplace the spring
Drill rotates but has no
power
ÂChoke put to ON
ÂCarburetor defective
ÂGear broken
ÂWorn clutch shoes
ÂPut choke to OFF once the engine runs
ÂContact the customer service
ÂContact the customer service
ÂReplace the clutch shoes and the spring
Drill jumps Â
Drill damaged  Replace by a new drill
Drill cuts only slowly ÂBlunt drill ÂReplace the drill or have it sharpened

16
T
Te ec ch hn ni ic ca al l s sp pe ec ci if fi ic ca at ti io on ns s
Model TT-GD520
Year of construction See last page
Max. engine output / speed
2.2 kW / 7500 min
-1
Cubic capacity 51,7 cm³
No-load speed n
0
3000 min
-1
Max. engine speed 9000 min
-1
Auger drill speed, max. 300 rpm
Ignition system Electronic ignition - CDI
Spark plug LD BM6A or TORCH BMA6
Carburetor HUA LONG
Fuel tank capacity 1,2 l
Ratio of mixture (fuel/two-stroke oil)
Spark gap 0,6 – 0,7 mm
Hand/arm vibration on the handle
(according to regulation EN 1033/DIN 45675) a
vhw
= < 21.206 m/s²
Hand/arm vibration on the handle
(according to regulation EN 1033/DIN 45675) a
vhw
= < 20.882 m/s²
Measuring uncertainty K K = 1,5 m/s²
Sound power level L
WA
113 dB (A)
Sound pressure level L
PA
88,4 dB (A)
Measuring uncertainty K K = 3 dB (A)
Weight (without drill and with empty tank)
8.8 kg
Weight (with drill (Ø 200 mm x 800 mm) and empty tank)
12,2 kg
40:1
ST-GD520
2016