Baumr-ag Srg450 User manual

Stump Grinder

User Manual

[Revision 5.0 December 2017]

READ THIS MANUAL CAREFULLY BEFORE USE – FAILURE TO DO SO MAY RESULT IN INJURY, PROPERTY DAMAGE AND

MAY VOID WARRANTY. • KEEP THIS MANUAL FOR FUTURE REFERENCE. • Products covered by this manual may vary in

appearance, assembly, inclusions, specifications, description and packaging.

The product is NOT supplied with engine oil, although traces of oil from the manufacturing process

may be present. It is essential to add adequate engine oil of the correct type to the engine before use.

• Lubricate the cutting wheel bearings BEFORE first use. Re-lubricate the cutting wheel bearings after every 10 hours

of use. Failure to add engine oil, or properly lubricate and maintain the cutting wheel bearings will void the

product warranty.

Stump Grinder

Table of Contents

Introduction...................................................................................................................................................................1

Safety Instructions........................................................................................................................................................1

Protective Equipment...................................................................................................................................................6

Important Information...................................................................................................................................................6

Controls.........................................................................................................................................................................7

Fuelling .........................................................................................................................................................7

Centrifugal Clutch..........................................................................................................................................7

Safety Presence Grip Bar..............................................................................................................................7

Throttle..........................................................................................................................................................7

Brake ............................................................................................................................................................8

Operation.......................................................................................................................................................................8

Before you start.............................................................................................................................................8

Starting the engine........................................................................................................................................8

Fuel valve......................................................................................................................................................8

Choke control................................................................................................................................................8

Throttle..........................................................................................................................................................8

Safety presence grip bar ...............................................................................................................................9

Starter handle................................................................................................................................................9

Throttle..........................................................................................................................................................9

Procedure for grinding a stump .....................................................................................................................9

Normal shutdown ........................................................................................................................................10

Maintenance................................................................................................................................................................12

Cutting Teeth...............................................................................................................................................12

Brake Adjustment........................................................................................................................................13

Two-Minute Rule.........................................................................................................................................13

Cleaning and washing.................................................................................................................................13

Lubricating bearings....................................................................................................................................13

Drive belts...................................................................................................................................................13

Troubleshooting..........................................................................................................................................................14

Storage ........................................................................................................................................................................15

Winter Storage............................................................................................................................................15

Storage.......................................................................................................................................................16

Specifications .............................................................................................................................................................16

Stump Grinder

Introduction

This manual is a valuable document. It describes your new machine. Read the manual carefully before

attempting to use the machine. Following the instructions (use, service, maintenance, etc.) can considerably

increase the life-span of your machine and even increase its resale value. Please contact your dealer for

more information.

If you sell your machine, make sure to give the operator’s manual to the new owner.

Use

The stump grinder is used to remove tree stumps. By moving the cutting wheel in sweeping movements

laterally over the top and front of the stump, you can gradually grind it away. Read the chapter “Safety

instructions” before you use the machine for the first time.

Insure your machine

Contact your insurance company to check on insurance coverage for your new machine. You should have all-

inclusive insurance for liability, fire, damage and theft.

Safety Instructions

General usage

The object of this manual is to help you use your machine

safely and to give you information about how to maintain your

machine. Please read the manual carefully before attempting

to use the machine.

If after reading the operator’s manual you are still unsure about

the safety risks associated with use of the machine, you should

not use the machine. Please contact your dealer for more

information.

These safety instructions only address the basics for safe use.

It would be impossible in the safety instructions to describe all

possible risk situations that could arise when using the

machine. You can, however, prevent accidents by always using

common sense.

•Follow all safety instructions. Failure to may result in injury

to yourself or others.

•Accident prevention regulations, other general safety

regulation, occupational safety rules and traffic regulation

must be followed without fail.

•All users shall be trained in use of the machine. The owner

is responsible for training users.

•Engage an authorized workshop for all service and repair

not described in this manual.

•Learn how to use the machine and its controls safely and

learn to recognize the safely decals.

•Only use the machine for removing tree stumps it is not

intended for any other use.

WARNING

Under no circumstances may the original

design of the machine be modified

without written approval from the

manufacturer. Such modifications not

only affect the performance and

durability of the machine but many even

pose a safety risk for users and those in

the vicinity. Unauthorized modifications

to the design of the machine may

absolve the manufacturer from liability

for any resulting personal injury or

property damage. Modifying the machine

without written approval from the

manufacturer may void the guarantee.

WARNING

The stump grinder can be dangerous if

used improperly or without due care and

can lead to serious accidents, in the

worst cases even fatal accidents. It is

very important that you read this

operator’s manual and understand the

instructions before you attempt to use

the machine.

Lubricate the cutting wheel bearings

BEFORE first use. Re-lubricate the

cutting wheel bearings after every 10

hours of use. Failure to properly

lubricate and maintain the cutting wheel

bearings will void the product warranty.

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Stump Grinder

•Check that the machine is in serviceable condition prior

to use;

•Only use the machine in daylight or in other well-lit

conditions. Keep the machine a safe distance from

holes or other irregularities in the ground. Pay attention

to other possible risks.

•Only allow the machine to be used by adults who by

adults who are familiar with its use.

•Never allow children or persons no trained in the use of

the machine to use or service it Local laws may regulate

the age of the user.

•People and animals can distract you causing you to lose

control of the machine. For this reason, you should

always concentrate and focus on the task at hand.

•Never leave the machine unsupervised with the engine running.

•Make sure that other people are nearby when you are using the machine so that you can call for help

should an emergency arise.

•The machine is tested and approved only with the equipment originally provided or recommended by the

manufacturer.

•Clear the work area before beginning work

•Use appropriate equipment (see right)

The engine can become very hot. To

avoid being burned, you must turn off

the engine and wait until all parts have

cooled before touching the engine.

Over-exposure to vibration may lead to

circulatory or nerve damage, particularly

in people who have impaired circulation.

Contact your doctor if you experience

symptoms that could have been caused

by overexposure to vibration. Examples

of common symptoms include

numbness, pain, muscle weakness,

change of skin colour or an

uncomfortable feeling of tingling. These

symptoms appear most frequently in the

fingers, hands or wrists.

IMPORTANT INFORMATION

Never use a stump grinder that is damaged or incorrectly

adjusted. Never use the stump grinder if any component is

missing or if it is not properly assembled. Check that the cutting

tools stop rotating when you reduce the throttle. If you find

yourself in a situation where you are not sure what to do, always

seek expert assistance. DO NOT try to attack any problem you

are not qualified to resolve.

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Stump Grinder

Preparation

•Make sure that you always have first aid equipment at hand when using the machine.

•Make sure nobody else is in the vicinity of the machine when you start the engine, the drive or run the

machine.

•Make sure animals and people maintain a safe distance from the machine.

•Clear the area of objects such as stones, toys, steel wire, etc. that could become caught in moving

machine parts and thrown out.

•Find and locate all fixed objects in the ground, such as sprinkler systems, poles, water valves, bases for

washing lines, etc. Be certain to check for hidden electrical cables or similar in the surface of the lawn.

Always run the machine around these objects. Never intentionally run the machine over foreign objects.

•Check the dead man’s grip and all guards are fitted and functioning. DO NOT use the machine if it is not

working properly.

•Make sure no clothing, long hair or jewellery can catch in moving machine parts.

•Use mouth protection, protective gloves with good grip and protective clothing which you can move

unrestricted. Also use leg protection to protect your legs from sparks and the cutting tools.

•Never use the machine when barefoot. Always wear protective boots with anti-slip and preferably with

steel toes.

•Use a helmet with a full face visor or a mesh visor and protective glasses. Wear approved ear-protection

when running the machine. Ask tour dealer about approved protective glasses, ear protection and

recommended helmets.

Operation

•Do NOT use the machine on grades of more than 10º.

•Do NOT use the machine if you are tired, if you have consumed alcohol,

or if you are taking other drugs or medication that can affect your vision,

judgement or coordination.

•Never use the machine indoors or in spaces lacking proper ventilation.

•Make sure you have a proper foothold when using the machine, particularly when

reversing. Always walk – do NOT run. Never work in wet grass. Poor traction may

cause you to slip.

•Keep your hands and feet away from moving parts.

•Keep your hands and feet away from the work tools.

•Do NOT use your feet or other parts of your body to gain greater bearing

pressure against the stump.

•Smoking, open flames or sparks in the vicinity of the machine are strictly

forbidden. Gasoline is extremely flammable and carelessness in handling

can result in personal injury of fire.

•Never use a machine with a deflective muffler.

•In very warm and dry climates, stump grinder operation poses a risk of forest fires.

Always use approved protective clothing and approved protective equipment when using the

machine. Protective clothing and protective equipment cannot eliminate the risk of accident, but

wearing proper clothing and the correct equipment will reduce the degree of injury should an

accident occur.

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Stump Grinder

•Stop and inspect the equipment if you run over or into anything. If necessary, make repairs before

beginning again.

•Whatever happens, you should always park the machine on even ground, disengage the drive, activate

the parking, turn off the engine and wait until all moving parts have stopped before leaving the operating

position behind the machine.

Movement/Transport

•To turn and steer the machine, press down on the handle and turn on the back wheels.

•Turn off the engine and allow it to cool at least 2 minutes before transport.

•Be careful and use safe lifting and moving techniques when loading/unloading the machine.

•We recommend having two people to lift the machine.

•Activate the parking brake during transport.

•Fasten the machine properly in place with approved fasteners, such as tension belts, chains or rope.

Always check that you are in compliance with applicable traffic regulations before transporting the

machine.

Storage

•Allow the engine to cool before storing the machine. Never store the

machine near an open flame.

•Store the machine with the fuel valve closed.

•Store the machine and fuel in such a way that there is no risk that

leaking fuel or fumes can come in contact with flames or sparks from

electrical machine, electric engines, relays, switches, boilers or similar.

•Store the machine in a locked space away from children and adults

untrained in use of the machine.

•Never store or operate the machine near an open flame.

•Keep children away from the machine. Never allow children to operate the machine.

Serious accidents can occur if you fail to be on guard for children near the

machine. Never assume that children will stay put where you last saw them.

•Be particularly careful near corners, bushes trees or other objects that block

your view.

Fuel system

•Only store fuel in containers approved for that purpose.

•Never remove the fuel cap and fill the fuel tank when the engine is running.

WARNING

Gasoline and gasoline fumes are poisonous and extremely flammable.

Be extra careful when handling gasoline, as carelessness can

result in personal injury or fire.

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Stump Grinder

•Always stop the engine when refuelling.

•Do not smoke when filling the gasoline tank and do not pour

gasoline near sparks or open flame.

•Never fill the fuel tank indoors.

•Before starting the machine after refuelling.

It should be move at least 10 feet (3 M) from the location where it

was filled.

•Turn off the fuel supply for storage or transport.

•If leaks arise in the fuel system, the engine must not be started until

the problem has been resolved.

•Check the fuel level before each use and leave space for the fuel to

expand.

•Avoid overfilling. If you spill gasoline on the machine, wipe up the spill and wait until it has evaporated

before starting the engine. If you spill gasoline on your clothing, change your clothing.

Maintenance

•Never make adjustments with the engine running.

•Disengage the drive units, shut off the engine and wait until all

moving parts come to a complete stop before making

adjustments, performing maintenance or cleaning the machine.

•Disconnect the spark plug cable before beginning repair work.

•Keep all components in serviceable condition and make sure all

nuts, bolts, etc. are tight. Replace worn or damaged decals.

•Be careful when checking work tools. Use gloves when

performing maintenance work.

•Never allow persons not trained in the use of the machine to

perform service on it.

•Always park the machine on even ground before performing maintenance or making adjustments.

•Do not disassemble the engine. This can invalidate your engine warranty. Contact your dealer if you have

any questions regarding service or guarantee matters. Follow all maintenance instructions.

•Do not change the setting of governors and avoid running the engine with overly high RPM. If you run the

engine too fast, you risk damaging the machine components.

•Do not modify safety equipment. Check regularly to be sure it works properly. The machine must not be

run with defective of disassembled safety equipment.

•The muffler is designed to maintain sound levels at an approved level and keep direct exhaust away from

the user. Exhaust gases are extremely hot and may contain sparks that can cause fires or burns.

•Never use a machine with a defective muffler.

•Reduce the risk of fire by removing grass, leaves and other debris that may have caught in the machine.

Wait until all moving parts are completely still before performing maintenance

on the machine. Turn off the engine and remove the spark plug cable.

WARNING

Close the fuel valve

Remove the spark plug cable.

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Stump Grinder

Protective Equipment

Personal equipment

Consult your dealer when selecting protective equipment.

Before using the stump grinder, you may need to cut back the object with a power saw. It is appropriate to

use personal protective equipment that fulfils requirement for working with both stump grinders and power

saws. The main difference is that you should wear protective glasses when operating the stump grinder while

the wire mesh visor gives sufficient protection when using a power saw. Thus when using the stump grinder,

we recommend using both a wire mesh or visor to protect your face and protective glasses. Alternatively, you

can use a face guard, but it scratches more easily and is more susceptible to soiling and fogging.

You require the following personal protective equipment:

Important Information

CAUTION: Lubricate the cutting wheel bearings BEFORE first use. Re-lubricate the cutting wheel

bearings after every 10 hours of use. Failure to properly lubricate and maintain the cutting wheel

bearings will void the product warranty.

1. Lubricate the cutting wheel bearings BEFORE first use.

2. Clear the work area of debris (stones, rocks, rubbish etc) before beginning work.

3. Change the engine oil after 10 hours.

4. Check bolts and nuts are properly adjusted after 10 hours, tighten them.

5. When the engine works smelly without cutter spindle rotating, move the cutter spindle away from work

area to avoid belt worn.

6. Check the edge before and after operating. Replace it when damaged.

7. Check fuel tank carefully before and after operating. Make sure there is enough fuel for using.

After the first 10 hours.

1. Change the engine oil.

2. Lubricate the cutting wheel bearings.

3. Check that the clutch is operated well.

4. Check that belts and chains are properly adjusted.

5. Tighten screws and nuts.

1. Protective helmet (hard hat)

2. Ear protection

3. Face guard

4. Protective trousers

5. Protective glasses

6. Breathing protection(risk of dusty work environment)

7. Protective gloves

8. First aid kit

9. Protective boots or steel-toed shoes.

WARNING

Gasoline is highly flammable. Observe

caution and fill the tank outdoors (see the

safety instructions).

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Stump Grinder

Controls

Fuelling

Read the safety instructions before fuelling.

Keep the fuel and fuel tank clean. Avoid filling the machine with

dirty fuel. Make sure the fuel cap is properly tightened and the

gasket is not damaged, particularly before washing the machine.

SAE10W-30 is recommended for general use.

If the engine “bolts” at normal load it can be damaged. Change the

fuel. If this does not help, contact an authorized service workshop.

Do not fill the tank completely; leave space for the fuel to expand

as it warms up.

Centrifugal Clutch

The engine is equipped with a centrifugal clutch that is

connected to the crankshaft.

When the engine speed increases, the drive for cutting wheel

engages automatically.

The centrifugal clutch is maintenance-face; it is not possible

for the user to make adjustments.

Safety Presence Grip Bar

The bar must be held against the handle for the engine to run.

If you release the grip, the ignition system short-circuits and

the engine stops.

Throttle

The lever controls engine speed.

With the lever down, the engine runs at idle and functions as start position.

When the engine speed increases, the centrifugal clutch drive automatically engages the cutting wheel.

Grip Bar

WARNING

Do not bind the bar to the handle. It is there for your

safety.

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Stump Grinder

Brake

WARNING: NEVER operate a machine with a defective brake

The lever activates a disk brake on the left wheel when it is pulled backwards. The brake should always be

activated when operating the grinder. When it is parked and when it is being transported.

Operation

Before you start

CAUTION: Lubricate the cutting wheel bearings BEFORE first use. Re-lubricate the cutting wheel

bearings after every 10 hours of use. Failure to properly lubricate and maintain the cutting wheel

bearings will void the product warranty.

Augers and auger tips are consumable parts, and are not covered under warranty.

Dig away the earth and remove any stones near the tree stump that may interfere with your work. Check that

the ground is free of foreign objects, such as electrical cables, barbed wire, etc.

Cut or trim the stump as necessary using a power saw.

Starting the engine

Check that all daily maintenance as described in the maintenance schedule has been performed.

Check that there is sufficient fuel in the tank.

Fuel valve

Open the fuel valve. Place the lever all the way to the right.

Choke control

When starting the engine warm, the lever should be in the

right position; see the illustration.

When starting the engine cold or partially warm, place the

lever completely or partly to the left.

When the engine is cold, it may be best to move the lever back in several stages. Find the position where the

engine runs smoothly.

Throttle

Set the throttle on the handle to the SLOW (START)/DISENGAGE position (see

Fig. A).

Fig. A

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Stump Grinder

Safety presence grip bar

Hold in the safety presence grip bar against the handle (see Fig. B).

Starter handle

The dead man’s grip must be pressed in when starting the engine.

Misuse of the starter handle ca damage the starter.

DO NOT twist the starter cord around your hand.

Pull out the handle slowly until the gears mesh.

Then give a sharp pull on the starter handle.

DO NOT pull out the starter cord completely and

DO NOT let go of the starter handle when extended.

Throttle

Keep the throttle at idle. When the throttle is increased, the cutting

wheel will begin rotating (see Fig. A).

Procedure for grinding a stump

Stage 1

WARNING

Never leave operating position when cutting wheel is rotating!

Keep everyone and all animals away when cutting wheel is rotating.

1. Place machine into position with the cutting

wheel near the front-top edge of stump.

2. Set brake to lock position.

3. Set the throttle to (START) DISENGAGE position.

4. Start the engine.

5. Allow the engine to warm up at idle for two minutes.

Fig. B

Before operating the machine, review “Machine

Control” and “Other Machine Components” presented

earlier in the “Operation” section, for a refresher on the

function and use if each control and component.

Operating on hills

Be very careful when operating the stump grinder on

hills because the machine can slip or move

unexpectedly.

NEVER use the machine on grades of 10 percent or

steeper.

Transport

Secure the machine with tensioning belts, chains or

other approved materials.

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Stump Grinder

6. Move the throttle up to the ENGAGE position (this will engage the cutting wheel and rotate it).

7. Swing the cutting wheel to one side, then lower it approximately 1/2″to 1″into the front-top corner of the

stump. Swing the cutting wheel back and forth, lowering the wheel approximately 1/2″to 1″ before each

sweep, until you have removed the front portion of the stump to ground level.

8. Raise the cutting wheel until centre of wheel is just above top of stump.

9. With the cutting wheel off to one side, advance the machine horizontally by releasing and resetting the

brake. Advance the machine forward to engage the cutting wheel into the stump so that when swept

across the stump it will remove 1/2″to 1″of stump with each sweep.

10. Sweep the cutting wheel across the stump, cutting away 1/2″to 1″of stump.

11. Advance the cutting wheel 1/2″to 1″, and sweep across stump in opposite direction.

12. Continue sweeping the cutting wheel left and right across stump, advancing it before each sweep, cutting

1/2″to 1″depth of stump with each sweep.

13. Continue cutting until top level of stump is all removed, making sure not to cut stump deeper than ground

level during this first stage.

14. Turn throttle to the (START) DISENGAGE position, wait ten seconds for the cutting wheel to stop rotating

then release brake and retract the machine from the stump.

Stage 2

15. Place machine into position with the cutting wheel near the front-top edge of the stump.

16. Set brake to lock position.

17. Move throttle to the ENGAGE position.

18. Complete cutting the stump down by repeating the previous steps until entire stump is cut to desired

depth.

19. Stop the machine.

Normal shutdown

Throttle

Set the throttle to SLOW/DISENGAGE.

If the engine has been running under full load, let it run without load and at a

low speed for about 30 seconds to one minute.

Do NOT allow the front of the unit to touch ground until you are sure the

cutting wheel has stopped turning.

Tips:

To make operating easier, cut stump to

same level as ground.

WARNING

A rotating cutting wheel is very

DANGEROUS! Stay at the operating

position and be sure that the wheel comes

to a complete stop before doing anything

else.

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Stump Grinder

WARNING

A rotating cutting wheel is very DANGEROUS! Stay at the operating

position and be sure that the wheel comes to a complete stop

before doing anything else.

Brake

Activate the brake by pulling the lever.

Fuel valve

Close the fuel valve. Turn the lever all the way to the left (see illustration).

Release the safety presence bar. Wait until the cutting wheel stops.

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Stump Grinder

Maintenance

Cutting Teeth

Among the most critical elements of the machine are the cutting teeth. It

is also the most subject to damage and wear. During cutting, teeth not

only contact the stump, but also encounters numerous assortments of

abrasives and objects, such as dirt, stones, and occasionally a large rock

or buried scrap. The loss of and wear of cutting teeth can significantly

impair the efficiency and performance of the machine. Therefore, it is

important to make frequent observations of the condition of all of the

cutting teeth and replace or sharpen any damaged or worn teeth.

Do not allow the cutting teeth to wear too much before sharpening. The

cutting teeth must be removed from the machine before sharpening.

Read all of the following instructions before beginning to change

cutting teeth.

Changing Cutting Teeth.

1. Clean all dirt from the cutting wheel and teeth.

2. Check the cutting teeth for cracks, chips and damage. Replace

damaged or unserviceable cutting teeth.

3. Remove the 2 bolts securing the cutting tooth - be careful not to let any

parts drop when they become loose.

4. Re-install the tooth and securely tighten using the fixing bolts. Ensure

that the teeth align with wheel rotation and that the longer bolt is used

where it must fix teeth on both sides of the cutting wheel.

SHARPENING STEPS

For sharpening, you will need a 6- or 8-inch bench grinder, an aluminum-

oxide general-purpose grinding wheel, a [green] silicon-carbide wheel and

a single-point wheel dresser.

Then follow these steps:

1. Use the single-point wheel dresser to create a ½" groove in the middle- of the silicon-carbide wheel to

accommodate the radius of cutting tooth carbide tip.

2. Hold the tooth vertical and inverted so that the carbide tip faces up. Do not grind the face of the carbide.

3. Use the aluminum-oxide wheel to grind away some of the steel from the front of the tooth below carbide

tip, exposing the front of the carbide tip. Do not allow the cutting edge of the carbide tip to touch the

grinding wheel, as this will ruin the tip.

4. Hold the tooth vertical, with carbide tip facing up and carefully and gradually grind away the dulled portion

of the carbide tip against the silicon-carbide wheel, maintaining a 30-degree front cutting angle. Push the

tooth into the grinding wheel – do not lift the tooth into the wheel.

5. Depending on the tooth dullness, you may need to go back and forth between the aluminum oxide wheel

and the silicon-carbide wheel until you have restored a sharp cutting edge. As you become more familiar

with sharpening, you will be able to do it quickly.

Sharp teeth increase effectiveness of the machine, reduces working time and minimises wear and tear.

Place the tooth in position

against the side of the

cutting wheel.

Slide the 2 fixing bolts

through the tooth and

cutting wheel. One bolt is

longer and must also pass

through the tooth on the

opposite side of the cutting

wheel.

Attach a flat washer, lock

washer and nut to the bolts

and tighten securely. Check

that all cutting teeth bolts

are securely tightened.

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Stump Grinder

Brake Adjustment

For fine adjustment, loosen set screw on side of brake lever knob. Adjust clockwise to tighten brake; adjust

counter clockwise to loosen brake. (Wheel should lock completely, tighten set screw).

For coarse adjustment, turn adjusting nuts on brake cable fitting at brake cable mount.

Two-Minute Rule

The machine may be tipped backward or on its side to facilitate access for cleaning or service, but no longer

than 2minutes. If the machine is held in this position for too long, the engine can be damaged by gasoline

draining into the crankcase. Should this happen, perform an extra oil change on the engine over a few

revolutions with the starter handle before starting the engine again.

Cleaning and washing

Regular cleaning and washing will increase the machine’s life span. Make it a habit to clean the machine

directly after use, before the dirt sticks. Check before reusing that the fuel tank lid is properly in place to avoid

getting water in the tank. Use caution when using high-pressure spray because warning decals, instruction

signs and the engine can be damaged. Do not exceed 70 bar/1000 PSI water pressure when cleaning.

Lubricate the machine after cleaning. This is particularly important if the machine is to be stored.

Lubricating bearings

Lubricate the cutting wheel bearings BEFORE first use.

Re-lubricate the cutting wheel bearings after every 10

hours of use. Failure to properly lubricate and maintain

the cutting wheel bearings may void product warranty.

Use a suitable grease gun (not supplied) and automotive

wheel bearing grease (not supplied). Attach the grease gun

to the grease nipple on the bearing holder (A) and pump in 1

or 2 squeezes of grease. Always grease both bearings on

either side of the cutting wheel.

NOTE: Pump grease in slowly and carefully to

prevent damage to the bearing seals. • Use extreme

caution when using a high pressure or high-volume

grease gun.

Drive belts

The drive system of the stump machine is composed of a 9J Joined Narrow V-belt. The stump machine’s V-

belt tension should be checked daily.

Before beginning to check or adjust belt: shutdown the machine, be sure that all moving parts have

come to a complete stop. Extreme caution must be used to avoid death or serious injury. Stay clear of

belts, pulley, clutch and cutting wheel when they are moving.

To adjust belt tension, loosen the 2 bolts behind clutch. Also loosen the 4 engine mounting bolts. Turn square

head adjusting bolt on frame clockwise to tighten belt, counter clockwise to loosen belt. (Make sure to

tighten all bolts after proper belt adjustment is achieved).To check belt tension, you should be able to

depress the belt down about 1/4-3/8”(6 -10 mm) from the original position.

To extend belt life, proper tension must be maintained. A loose belt will cause excessive cutting

wheel slippage and belt failure. A belt that is too tight can cause bearing, shaft and belt failure.

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Stump Grinder

Troubleshooting

Symptom Cause Action

The engine will not start Fuel valve closed. Open the fuel valve.

User error Choke valve open. Close the chock with cold engine.

Engine switch in OFF position. Turn engine switch to ON

Fuel system Fuel tank empty. Fill with fuel.

Machine stored without observing

proper procedure from chapter

“Storage/Winter storage”.

Clean tank, sludge reservoir and

empty carburetor.

Fill the tank with fresh fuel.

Contamination, water or ice in fuel

system. Clean tank, sludge reservoir, fuel

lines and carburetor fill the tank with

fresh fuel.

Carburetor problems.

Spark plug Wrong spark plug type. Replace the spark plug.

Build-up on electrodes. Check electrode gap and clean or

replace spark plug.

Short circuit. Replace the spark plug.

Gasoline or oil on the spark plug. Clean the spark plug. Air the engine

out. Start with full Throttle.

No spark after service Faulty engine switch, cable or

ignition. Contact an authorized service

workshop.

Low compression authorized Serious interior engine damage or

faulty valves. Contact a service workshop.

Engine is gutless or unevenly

Air filter Clogged air filter. Clean or replace the air filter.

Fuel system Machine stored without observing

proper procedure from chapter

“Storage/Winter storage”.

Clean tank, sludge reservoir and

empty carburetor.

Fill the tank with proper fuel.

(Blue exhaust)

(Voluminous blue- white exhaust) Tank filled with 2-cycle mixed oil.

Tank filled with diesel. Clean tank, sludge reservoir and

empty carburetor.

Fill the tank with proper fuel.

Open choke valve.

Clean or replace the air filter.

(Black exhaust) Choke left on.

Clogged air filter.

Carburetor problems.

Contact an authorized service

Workshop.

Ignition system Wrong spark plug type.

Build-up on electrodes.

Short circuit.

Faulty ignition unit.

Replace the spark plug.

Check electrode gap and Clean or

replace spark plug.

Contact an authorized service

Workshop.

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Stump Grinder

Problem Possible solutions

Belt coming off.

1. Pulleys not aligned.

2. Belt tension is insufficient. Adjust belt tension.

Belt engages late Or slips. 1. Tighten the belt as described in the operator’s manual.

2. Reduce cutting depth.

Belt not staying tight after

adjustment. 1. Check for damage on the axle, pulley or key. Make sure that the setscrews are

properly tightened.

2. Replace damaged parts.

The cutting wheel does

not rotate 1. Engine speed is insufficient to activate the centrifugal clutch.

2. Belt tension is insufficient. Adjust belt tension.

3. Clutch is worn-replace shoes and springs, and/or clutch bearings.

The cutting wheel

continues to rotate. 1. Check that the throttle is disconnected.

2. Check for damage on the throttle cable.

3. Check that the throttle cable is properly mounted on the throttle valve.

4. The engine speed is not under 1000 rpm, which is required to Disengage the

centrifugal clutch.

5. Inspect springs on clutch shoes. If tension on clutch shoes is not enough to pull shoes

back, replace spring and clutch shoes.

The parking brake is

slipping 1. Adjust the brake tension in the manner described in the operator’s manual.

2. Check for damage on the brake rod or lever.

3. Check for wear on the brake pads. Replace as necessary.

Storage

Winter Storage

At the end of the season, the machine should be readied for storage (or if it will not be in use for longer than

30 days). Fuel allowed to stand for long periods of time (30 days or more) can leave sticky residues that can

plug the carburetor and disrupt engine function.

Fuel stabilizers are an acceptable option as regards sticky residues during storage. If alkylate gasoline

(Aspen) is used, stabilizers are unnecessary because this fuel is stable. However, you should avoid switching

between regular and alkylate gasoline as sensitive rubber components can harden. Add stabilizer to the fuel

in the tank or in the storage container. Always use the mixing ratios specified by the manufacturer of the

stabilizer. Run the engine for at least 10 minutes after add in the stabilizer so that it reaches the carburetor.

Do NOT empty the fuel tank and the carburetor if you have added stabilizer.

WARNING

NEVER store an engine with fuel in the tank indoors or in poorly ventilated spaces where fuel

vapor can come in contact with open flame, sparks or a pilot light such as in a boiler, hot water

tank, clothing drier, etc. handle the fuel with caution. It is very flammable and careless use can

cause serious damage to person and property. Drain the fuel into an approved container

outdoors and far away from open flame. NEVER use gasoline for cleaning. Use a de-greaser and

warm water instead.

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Stump Grinder

Storage

When ordering spare parts, please specify the purchase year, model, type, and serial number.

Always use genuine Parts.

An annual check-up at an authorized service workshop is a good way to ensure that your machine performs

its best the following season.

1. The paint to prevent rust.

2. Inspect the machine for worn or damaged parts and tighten any nuts or screws that may have become

loose.

3. Change the engine oil; dispose of properly.

4. Open the fuel valve. Empty the fuel tank and the carburetor.

5. Close the fuel valve.

6. Remove the spark plug and pour about a tablespoon of engine oil in the cylinder. Turn over the engine so

that the oil is evenly distributed and then refit the spark plug. Put the engine in the compression phase

where the triangle mark on the sleeve of the starter is aligned with the upper hole in the starter. Note:

Compression phase occurs every second revolution.

7. Lubricate the machine at all grease nipples, joints and cables.

8. Store the machine in a clean, dry place and cover it for extra protection.

9. Cover the cutting wheel and teeth with a thin coat of oil to avoid rust.

Specifications

Brake Disk-Lever activated

Drive Direct

Belt A Style

Clutch Centrifugal clutch

Cutters 12 cutters with tungsten carbide tips

Cutting depth 12’’

Package size(L×W×H) 41.3”X19.7”X22”

Weight. Approximately 51kg

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Stump Grinder

Some experts believe the incorrect or prolonged use of almost any product could

cause serious injury or death. For information that may reduce your risk of serious

injury or death, consult the points below and additionally, the information available at

www.datastreamserver.com/safety

•Consult all documentation, packaging and product

labelling before use. Note that some products feature

online documentation which should be printed and kept

with the product.

•Check product for loose / broken / damaged / missing

parts, wear or leaks (if applicable) before each use.

Never use a product with loose / broken / damaged /

missing parts, wear or leaks (if applicable).

•Products must be inspected and serviced (if applicable)

by a qualified specialist every 6 months assuming

average residential use by a person of average weight

and strength, above average technical aptitude, on a

property matching average metropolitan specification.

Intended use outside these guidelines could indicate the

product is not suitable for intended use or may require

more regular inspection or servicing.

•Ensure all possible users of the product have completed

an industry recognized training course before being

given access to the product.

•The product has been supplied by a general merchandise retailer that

may not be familiar with your specific application or your description of

the application. Be sure to attain third-party approval for your

application from a qualified specialist before use regardless of prior

assurances by the retailer or its representatives.

•This product is not intended for use where fail-safe operation is

required. As with any product (take an automobile, aircraft, computer

or ball point pen for example), there is always a small chance of

technical issues that needs to be repaired or may require replacement

of the product or a part. If the possibility of such failure and the

associated time it takes to rectify could in any situation inconvenience

the user, business or employee then the product is not suitable for

your requirements. This product is not for use where incorrect

operation or a failure of any kind, including but not limited to a

condition requiring product return, replacement, service by a technician

or replacement of parts could cause a financial loss, loss of employee

time or an inconvenience requiring compensation.

•If this item has been purchased in error after considering the points

above, simply contact the retailer directly for details of their returns

policy, if required.

ideas, diagrams or images may be reproduced or transmitted in any form or by any means, electronic or

mechanical, including photocopying, scanning or recording, or any information storage and retrieval system,

without express permission or consent from the publisher.

Baumr-AG SRG450 User manual

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