STIHL USG Owner's Manual

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Page 1

Page 2

English

Guide to Using this Manual .............. 2

Safety Precautions ........................... 3

Applications ...................................... 4

Mounting the Tool ............................. 4

Selecting the Grinding Wheel ........... 6

Mounting the Grinding Wheel ........... 7

Test Run ........................................... 8

BA_SE_025_002_01_06.fmPrinted on chlorine-free paper.

Dressing the Grinding Wheel ............ 8

Scales ............................................... 8

Setup for Sharpening Saw Chain ..... 9

Sharpening Procedure ................... 15

Lowering Depth Gauges ................. 17

Setup for Sharpening

Hedge Trimmer Blades ................... 19

Sharpening

Hedge Trimmer Blades ................... 24

Preparations for Sharpening

Circular Saw Blade ......................... 27

Sharpening Circular Saw Blade ...... 31

Maintenance Chart ......................... 32

Minimize Wear and

Avoid Damage ................................ 33

Main Parts of Sharpener ................. 34

Specifications ................................. 35

Special Accessories ....................... 35

Maintenance and Repairs ............... 35

Printing inks contain vegetable oils; paper can be recycled.

Certificate of Conformity ................. 36

Quality Certification ........................ 36

Dear Customer,

Thank you for choosing a quality engineered STIHL product.

This machine has been built using modern production techniques and comprehensive quality assurance. Every effort has been made to ensure your satisfaction and troublefree use of the machine.

Please contact your dealer or our sales company if you have any queries concerning your machine.

Hans Peter Stihl

STIHl

0458 523 0121. M0,5. C4. T. Printed in Germany

1USG

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Guide to Using this Manual

Pictograms

All the pictograms attached to the machine are shown and explained in this manual.

The operating and handling instructions are supported by illustrations.

Symbols in text

The individual steps or procedures described in the manual may be marked in different ways:

: Step or procedure without direct

reference to an illustration.

Description of step or procedure that refers directly to the illustration and contains item numbers that appear in the illustration. Example:

Loosen the screw (1)

Lever (2) ...

In addition to the operating instructions, this manual may contain paragraphs that require your special attention. Such paragraphs are marked with the symbols described below:

Warning where there is a risk of an accident or personal injury or serious damage to property.

Caution where there is a risk of damaging the machine or individual components.

Note or hint which is not essential for using the machine, but may improve the operator’s understanding of the situation and result in better use of the machine.

Note or hint on correct procedure in order to avoid damage to the environment.

Equipment and features

This instruction manual refers to several models with different features. Components that are not installed in all models and related applications are marked with an asterisk (*). Such components may be available as special accessories from your STIHL dealer.

Engineering improvements

STIHL’s philosophy is to continually improve all of its products. As a result, engineering changes and improvements are made from time to time. If the operating characteristics or the appearance of your machine differ from those described in this manual, please contact your STIHL dealer for assistance.

Therefore, we cannot be responsible for changes, modifications or improvements not covered in this manual.

USG

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Safety Precautions

English

Additional safety precautions have to be observed when operating the universal sharpener.

It is important that you read and understand the owner’s manual before using your tool for the first time. Keep it in a safe place for later reference.

Non-observance of the following safety precautions may cause serious or even fatal injury.

Always observe local safety regulations, standards and ordinances.

If you have never used this sharpener model before: Have your dealer or a trained expert show you how to operate it properly and safely.

Minors should never be allowed to use an electric sharpener.

Keep children, bystanders and animals well clear of the work area.

Only use the grinding wheels supplied by STIHL or expressly approved by STIHL for use with your specific model.

Do not use any other grinding wheels since they will increase the risk of injury.

Switch on the motor only if its operating voltage agrees with the voltage of your power supply.

Clothing and Equipment

Wear proper protective clothing and equipment.

The grinding dust produced when using this sharpener may cause health problems. Always use a dust extractor or wear a suitable respirator.

The sparks created during sharpening may cause eye injuries.

Always wear safety glasses.

Clothing must be sturdy and snug-fitting, but allow complete freedom of movement.

Wear overalls – avoid loose-fitting jackets.

Wear steel-toed safety boots with non-slip soles.

Wear heavy-duty, non- slip gloves, preferably made of leather.

Before Starting Work

Check that your sharpener is properly assembled and in good condition. Do not operate your sharpener with a damaged connecting cord or grinding wheel.

Maintenance and Repairs

Always disconnect the unit from the power supply before carrying out any maintenance work. Only perform the adjustments and maintenance operations described in this manual.

All other maintenance and repairs should be carried out by your STIHL dealer.

Only use original STIHL replacement parts.

In the interests of your own safety, never modify your electric sharpener in any way.

3USG

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Applications Mounting the Tool

The STIHL USG sharpens all STIHL Oilomatic saw chains, hedge trimmer blades and circular saw blades.

Optional swivelling tool rests are required for sharpening scratcher tooth chain, hedge trimmer blades and circular saw blades.

The unit may be mounted on a wall or workbench.

If you mount the unit on a bench, note that the unit must overhang the bench by at least 120 mm.

If you use the special attachment for hedge trimmer blades: If you mount the unit on a wall, note that a clearance of at least 450 mm is required between the wall and the unit for sharpening hedge trimmer blades. Recommendation: Mount the unit on a bench for such work.

523BA045 KN

Secure the unit with screws

A = For wall mounting, use three

suitable 8 mm dia. screws (e.g. 8 mm x 100 mm wood screws, DIN 571-St), 8.4 mm dia. washers and suitable wall plugs (e.g. 10x50 mm plastic wall plugs)

B = For bench mounting, use two

suitable 8 mm dia. screws (e.g. 8 mm x 100 mm wood screws, DIN 571-St), 8.4 mm dia. washers

USG

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: Loosen the M5x10 screws (1)

and then lift and remove the guard plate (2).

523BA046 KN

: Fit motor (3) on motor arm (4). The

switchbox (5) must face up.

: Insert the four M5x22 pan head

screws (6) and tighten them down firmly in a diagonal pattern.

: Screw the short thread of M10x145

stud (7) into the housing bore (8).

: Screw the M10 nut (9) onto the stud

as far as stop.

523BA047 KN

: Place the M10 nut (10) in the

hexagon recess in the handle (11) and screw the handle firmly into position.

523BA048 KN

523BA049 KN

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Selecting the Grinding Wheel

: Place the eye shield (12) against the

guard and line up the holes.

: Insert the M4x12 screws (13) in the

holes and fit the nuts (14).

: Tighten down the screws firmly.

: Refit the guard plate.

523BA050 KN

Work Light (Special Accessory)

: Use a punch to pierce the casting

skin.

: Clean up the edges with a round file.

: Position lamp socket in opening

from outside and secure it with the screw ring.

A/B C D

A = Grinding wheel 5203 750 7010

(2.4 mm radius at one side)

B = Grinding wheel 5203 750 7013

(2.0 mm radius at one side)

C = Grinding wheel 5203 750 7015 D = Diamond grinding wheel

5203 757 0901

523BA051 KN

Grinding wheel

Application

A . Circular saw blades

. Hedge trimmer blades

. Oilomatic chain,

pitch: 3/8“, 0.404“, 0.325“

B . Oilomatic chain,

pitch: 1/4“, 3/8“ P, 3/8“ PMN

C . Oilomatic chain,

depth gauges

DCarbide:

. Oilomatic chain

Rapid Duro Rapid Duro S

. Carbide tipped circular

saw blade

523BA091 KN

USG

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Mounting the Grinding Wheel

English

Always check condition of grinding wheels by performing ringing test before mounting. Never use damaged grinding wheels.

: Loosen the M5x10 screws (1), then

lift and remove the guard plate (2).

523BA046 KN

: Fit the O-ring (3) in the groove in the

spacer (4) and then push the spacer onto the motor shaft (5) (spacer flange must face away from motor).

: Fit the required grinding wheel (6).

: Fit the thrust washer (7) on the shaft

with its raised side facing away from motor.

523BA092 KN

Grinding wheel

A/B

A/B Radius facing motor

C Large outside diameter

D Either way round

Installed position

(pointing to the right)

facing motor (pointing to the right)

523BA093 KN

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Test Run Dressing the

Grinding Wheel

Every time you mount a grinding wheel:

: Cordon off the general work area

(danger zone).

: Run grinding wheel at maximum

permissible speed for at least one minute.

The profile of the grinding wheel is subject to wear.

Switch off the motor.

: Use dressing gauge (special

accessory) to check the profile of the grinding wheel.

: Set scale C on swivelling tool

rest to "0".

: Use dressing stone (special

accessory) to correct the profile of the grinding wheel.

Scales

523BA030 KN

Scale A

: Loosen the nut (1), adjust angle,

tighten down the nut firmly.

Scale B

: Loosen the wingnut (2) on the

underside of the base, adjust to required value, tighten down the wingnut firmly.

Scale C

: Loosen the wingnut (3), adjust

angle, tighten down the wingnut firmly.

523BA138 KN

USG

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Setup for Sharpening Saw Chain

Inspect the chain.

Replace damaged or worn parts of the chain. Grind the new parts back to the shape and size of the other parts.

: Select the grinding wheel – see

instruction sheet 0457 716 0000.

: Mount the grinding wheel – see

"Mounting the Grinding Wheel".

: Test run the grinding wheel – see

"Test Run".

: Check profile of grinding wheel and

dress if necessary – see "Dressing the Grinding Wheel".

1 2

Scale C (attachment for circular saw blades)

: Loosen the wingnut (4), adjust

angle, tighten down the wingnut firmly.

523BA094 KN

Mounting Attachment for Saw Chain

: Engage pin (1) in hole (2) in base.

: Insert bolt (3) in slot (4).

: Fit the washer (5) and wingnut (6)

and tighten down moderately.

523BA054 KN

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Determining Drive Link Gauge

The clamp must be adjusted to suit the drive link gauge.

Drive link gauge:

: Use slide caliper to measure

dimension "a" or

: note the digit (arrow)

Digit Drive link gauge in mm

11.1

31.3

51.5

61.6

02.0

523BA135 KN

Adjusting the Clamp

: Unscrew the clamping lever (1).

: Remove the thrust plate (2) and nut.

523BA095 KN

: Take out the screws (3).

: Take out the screws (4).

523BA057 KN

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Chain with 1.1/1.3 mm drive link gauge

: Fit the shim (5).

: Fit the screws (3).

: Install a 1.6 mm washer (6)

between the guide rail and clamping rail (at each end).

: Fit the screws (4).

523BA096 KN

Chain with 1.5/1.6 mm drive link gauge

: Remove the shim (5) (if fitted).

: Fit the screws (3).

: Install two 0.9 mm washers (6)

between the guide rail and clamping rail (at each end).

: Fit the screws (4).

523BA097 KN

Chain with 2.0 mm drive link gauge

: Remove the shim (5) (if fitted).

: Fit the screws (3).

: Install one 0.9 mm and one

: Fit the screws (4).

1.6 mm washer (6) between the guide rail and clamping rail (at each end).

523BA097 KN

11USG

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English

: Fit the clamping lever.

523BA137 KN

Finding the Master Cutter

The shortest cutter is used as the master cutter.

The master cutter is sharpened first. All other cutters are then ground to the same length as the master cutter.

: Use a slide caliper to find the

shortest cutter and mark it, e.g. with chalk.

523BA012 KN

Fitting the Saw Chain

: Release the clamping lever (1).

: Place the chain in position, drive link

tangs (2) between the rails (3) – cutting edges must point to the left.

523BA061 KN

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English

523BA077 KN

Setting the scales

: Set the scales to the values

specified in the instruction sheet 0457 716 0000.

: Pull the master cutter back against

the stop (4).

523BA062 KN

: The pivot pin (5) moves backward

and forward so that the stop can be properly located against the back of the cutter.

: To sharpen the left-hand row of

cutters: Pull the stop in the direction of the arrow.

: To sharpen the right-hand row of

cutters: Push the stop in the other direction.

523BA063 KN

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Adjusting Lateral Stop

: Back off the travel limiting screw (1).

: Use the handle to bring the grinding

wheel down to the chain.

523BA098 KN

: Move the stop (2) with the adjusting

screw (3) so that the master cutter's side plate butts against the grinding wheel.

: Clamp the chain firmly in position.

523BA099 KN

: Tighten down the knurled nut on the

adjusting screw.

523BA066 KN

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English

Sharpening Procedure

Wear safety glasses.

Sharpening the Master Cutter

: Switch on the motor.

: Bring motor arm slowly downward.

Check sharpening process. Do not remove too much material.

: If necessary, switch off motor and

readjust.

: Sharpen the side plate by applying

the wheel several times – do not sharpen in a single pass.

: When result is satisfactory, check

the grinding depth.

Adjusting Grinding Depth

: Swing the motor arm down until

grinding wheel touches the gullet of the cutter – hold it in this position.

523BA100 KN

: Screw the travel limiting screw (1)

down as far as the stop lug (2).

: Tighten down the knurled nut (3)

firmly.

: Swing the motor arm up again.

523BA101 KN

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The travel limiting screw must now butt against the stop lug and the side plate angle (1) should be as specified.

Chain type Angle in

degrees Rapid-Standard 85 Rapid-Micro 85 Rapid-Super 60 Picco-Micro 85 Picco-Micro-Mini 85 Rapid-Duro 65 RCX, RMX, PMX 80

: Check angle with a filing gauge.

If side plate angle is too obtuse (wide):

: Use travel limiting screw to set

motor arm lower.

Avoid touching the drive links or tie

523BA022 KN

straps with the grinding wheel. This could cause the chain to break.

If side plate angle is too acute (narrow):

: Use travel limiting screw to set

motor arm higher.

: Lock the adjusting and travel

limiting screws with their knurled nuts.

523BA070 KN

523BA071 KN

Sharpening Row of Cutters

Use the setting for the master cutter to sharpen all the other cutters in the row.

: Release clamping lever. Pull the

chain to the left until the stop is behind the next cutter but one.

USG

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English

Lowering Depth Gauges

: Pull the chain to the right until the

back of the cutter butts against the stop.

: Clamp the chain in position.

: Sharpen the side plate.

: Repeat procedure until all side

plates on one side have been sharpened.

Sharpening the Second Row of Cutters

: Set scale B to the same sharpening

angle on the other side of the chain.

: Set scale C to the specified angle on

the other side of the chain.

: Move the stop with the pivot pin –

the stop must locate properly against the back of the cutter.

: After sharpening first cutter in the

second row, check its length against that of the other row and adjust the stop if necessary.

: Now sharpen the second row of

cutters.

523BA072 KN

Checking Depth Gauge Setting

: Select the filing gauge (special

accessory) that matches the chain pitch.

Chain pitch Filing gauge inch mm Part No.

/8 PMN 9.32 0000 893 4000

/8 P 9.32 1110 893 4000

0.325 8.25 1110 893 4000

0.404 10.26 1106 893 4000

: Place the filing gauge on the saw

6.35 1110 893 4000

9.32 1110 893 4000

chain. If the depth gauge projects beyond the filing gauge it has to be lowered.

564BA017 KN

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English

If the depth gauges have to be lowered:

: Select the correct grinding wheel

– see instruction sheet 0457 716 0000

: Mount the grinding wheel – see

"Mounting the Grinding Wheel".

: Test run the grinding wheel – see

"Test Run".

: Check profile of grinding wheel and

dress if necessary – see "Dressing the Grinding Wheel".

Setting the Scales

: Set scale A to 40°

: Set scales B and C to 0°

523BA102 KN

Adjusting the Lateral Stop

: Swing the motor arm down.

: Slide the chain along the guide rail

523BA077 KN

until the profile (1) of the grinding wheel is centered above the depth gauge.

: Clamp the chain in position.

: Turn the adjusting screw (2) until the

back of the cutter butts against the stop.

Adjusting Grinding Wheel

: Swing the motor arm down until the

grinding wheel touches the depth gauge.

: Screw home the travel limiting

screw (1) until it butts against the stop lug (2).

: Put on safety glasses.

: Switch on the motor.

: Carefully bring the motor arm down

as far as the stop.

523BA101 KN

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: Switch off the motor.

: Place the filing gauge (5) on the

chain.

: If the depth gauge (4) still projects

above the filing gauge, make appropriate adjustment with the travel limiting screw (1).

: Remove the filing gauge (5).

: Switch on the motor.

: Carefully bring the motor arm down.

: Switch off the motor.

: Repeat the procedure until the

depth gauge is level with the filing gauge.

: Tighten down the knurled nut (3)

firmly.

: Use this setting to lower all the other

depth gauges.

The kickback tendency of the saw is increased if the depth gauges are too low.

523BA103 KN

On PM1 and RM2 chains the rear hump of the tie strap (with service mark) is lowered at the same time as the depth gauge. The other parts of the triple-humped tie strap must not be ground because this may increase the kickback tendency of the saw.

English

Setup for Sharpening Hedge Trimmer Blades

: Select the correct grinding wheel

– see "Selecting Grinding Wheel".

: Mount the grinding wheel – see

"Mounting the Grinding Wheel".

: Test run the grinding wheel – see

"Test Run".

: Check profile of grinding wheel and

523BA139 KN

dress if necessary – see "Dressing the Grinding Wheel".

19USG

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English

523BA077 KN

Mounting the Attachment for Hedge Trimmer Blades

: Engage pin (1) in hole (2) in base.

: Insert bolt (3) in slot (4).

: Fit the washer (5) and wingnut (6)

and tighten down moderately.

Setting the Scales

HL 45, HL 75, HLR 85, HS 61 HS 75, 80, 85 HL 100, HS 246 HS 45

Scale A - 10° - 6°

523BA054 KN

Scale B 00 Scale C

left Scale C

right

+ 45° + 55°

- 45° - 55°

523BA104 KN

Principle of Clamp

: Turn the star knob (1) to open and

close the clamp.

The stop (2) is automatically engaged and disengaged by the spring (3).

USG

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Fitting Cutting Blade

: Turn the star knob (1) until the

spring (2) is in the positon shown.

: The clamp is open in this position –

the cutting blade may be fitted.

523BA106 KN

Fitting one-sided cutting blade

: Fit the angle iron rail (5).

: Fit the cutting blade (6) in position

so that the cutting edges point to the rear.

523BA107 KN

Fitting double-sided cutting blade

: Fit the cutting blade (4) in position

so that the cutting edges point to the rear.

523BA108 KN

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Adjusting the Stop

Adjusting the lateral stop

: Swing the motor arm down until the

grinding wheel is above the gullet of the tooth – hold it in this position.

: Pull the cutting blade (1) to the left

until the first tooth (2) in the row butts against the grinding wheel.

523BA110 KN

: Swing the motor arm up again.

: Turn the star knob (1) clockwise

until the spring is in the position shown – the clamp is closed.

523BA111 KN

: Swing the stop (4) into position by

hand.

: Turn the adjusting screw (5) until the

stop butts against the tooth (6).

: If range of adjustment is insufficient,

loosen the screws (7) on the stop.

: Move the stop (4) until it butts

against the tooth and then tighten down the screws (7) firmly.

523BA112 KN

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English

If stop is now correctly positioned:

: Continue turning the star knob (3)

clockwise until the stop swings back.

523BA113 KN

Adjusting sharpening depth

: Swing the motor arm down until the

grinding wheel touches the gullet of the tooth – hold it in this position.

523BA109 KN

: Screw the travel limiting screw (1)

down as far as the stop lug (2).

: Tighten down the knurled nut (3)

firmly.

523BA101 KN

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English

Sharpening Hedge Trimmer Blades

Wear safety glasses to protect your eyes.

Observe the following points when sharpening:

: The cutting blade must be correctly

clamped in position and the stop must swing back out of the way.

: Bring the motor arm slowly

downward. Check sharpening process. Do not remove too much material. If necessary, switch off the motor and readjust.

: Sharpen the cutting edges by

applying the wheel several times – do not sharpen in a single pass.

Sharpening Row of Teeth

: Switch on the motor.

: Sharpen the first tooth.

: Turn the star knob (1) counter-

clockwise to loosen the clamp.

: Move cutting blade (2) one tooth to

the left.

: Continue turning the star knob (1)

until the stop swings forward automatically. The left tooth flank must butt against the stop.

523BA114 KN

: Turn the star knob (1) clockwise

until the stop swings back – the cutting blade is now clamped in position.

: Sharpen the tooth.

Repeat the above procedure until all the teeth in the row have been sharpened. Now follow the separate descriptions for sharpening one-sided and double-sided cutting blades.

523BA115 KN

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Page 26

180°

English

180°

Sharpening Double-Sided Hedge Trimmer Blades

: Sharpen the first row of teeth –

cutting edges point to the rear.

523BA131 KN

: Take the cutting blade out of the

clamp and turn it 180° lengthwise – cutting edges point to the rear.

: Sharpen the teeth.

523BA116 KN

: Take the cutting blade out of the

clamp and turn it over (180°) – cutting edges point forwards.

: Set scale C to opposite angle.

: Sharpen the teeth.

523BA117 KN

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English

180°

523BA120 KN

180°

: Take the cutting blade out of the

clamp and turn it over (180°) – cutting edges point forwards.

: Set scale C to opposite angle.

: Sharpen the teeth.

: Take the cutting blade out of the

clamp and turn it 180° lengthwise – cutting edges point forwards.

: Sharpen the teeth.

523BA118 KN

Sharpening One-Sided Hedge Trimmer Blades

: Sharpen the first row of teeth –

cutting edges point to the rear.

523BA119 KN

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Preparations for Sharpening Circular Saw Blade

Check the blade. Always perfom a ringing test.

Do not continue to use warped or cracked blades since they may shatter.

: Select the correct grinding wheel –

see "Selecting the Grinding Wheel".

: Mount the grinding wheel – see

"Mounting the Grinding Wheel".

: Test run the grinding wheel – see

"Test Run".

: Check profile of grinding wheel and

dress if necessary – see "Dressing the Grinding Wheel".

Mounting the Special Attachment

: Fit the attachment (1) so that the

arrow points to "0" on the scale.

: Tighten down the wingnut (2) firmly.

a b

Clamping the Circular Saw Blade

: Use the tapped hole specified for

the saw blade diameter:

a = for 200 mm blade

b = for 225 mm blade

c = for 250 mm blade

523BA121 KN

If necessary, change the position of the shoulder stud (1).

English

523BA122 KN

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English

: Position the saw blade (2) on the

shoulder stud (1) so that the cutting edges point to the left (counterclockwise).

: Fit the locator (4) over the shoulder

stud and push it home – this centers the saw blade.

: Tighten down the clamp lever (5)

firmly.

The saw blade must now locate against the retaining plate free from play, but it must still be possible to turn the blade by hand.

523BA123 KN

Setting the Scales

The settings depend on the type of saw blade:

Chisel tooth, standard (1)

Chisel tooth, special (2)

Scratcher tooth (3)

Carbide tipped blade (4)

There are saw blades with

square ground teeth (5)

(scale C = 0) and

bevel ground teeth (6)

523BA124 KN

In the case of bevel ground teeth, mark the teeth that have the same sharpening angle (every second tooth). Marking them helps avoid accidentally sharpening a tooth on the other side of the blade.

523BA125 KN

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English

: Set angles as specified in the

following table.

Type of tooth Scale

Chisel tooth, standard +5°...+15°

Chisel tooth, special +5°...+15°1)+15°/ -15°

Scratcher

tooth

Carbide tipped blade

Depending on type of wood, set between +5° (for hardwood) and +15° (for soft wood)

Scratcher tooth saw blade with 80 teeth cannot be sharpened with the USG

Scale

0° 0°

7° +5°/-5°

+15°/ -15°

523BA126 KN

Adjusting the Stop

Adjusting the lateral stop

: Swing the motor arm down.

: Use the adjusting screw (1) to move

the stop (2) so that the side plate of the tooth to be sharpened butts against the grinding wheel – make sure the stop locates firmly against the back of one tooth.

: The stop can be moved in the

slot (3) to suit the saw blade.

523BA127 KN

Adjusting sharpening depth

: Swing the motor arm down until the

required sharpening depth is reached – see "Sharpening profiles".

: Screw home the travel limiting

screw (1) until it butts against the stop lug (2).

: Tighten down the knurled nut (3)

firmly.

523BA101 KN

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English

Sharpening profiles

Chisel tooth, standard (1)

Chisel tooth, special (2)

Scratcher tooth (3)

Carbide tipped blade (4)

Sharpening Limits

Chisel tooth:

– Sharpening depth: max. 5 mm

– Top plate must not be sharpened

back to more than half its length.

– Tooth set must not be less than

1mm.

Scratcher tooth

– Sharpening depth: no more than

diameter of blade body.

– Do not reduce tooth height by more

than 1/3.

– Do not touch back of next tooth with

523BA128 KN

grinding wheel.

Carbide tipped blade

– Sharpen carbide tip only – do not

sharpen material of blade body.

523BA136 KN

Checking Tooth Set

After sharpening chisel tooth saw blades:

: Use saw set (special accessory) to

check tooth set (a) and correct if necessary.

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Page 32

Sharpening Circular Saw Blade

Wear safety glasses and work gloves.

Sharpening the First Tooth

: Push the saw blade clockwise

against the stop (1) with your left hand.

: With the motor running, carefully

swing the motor arm down.

: Only remove sufficient material to

obtain a "clean" cutting edge. If necessary, use adjusting screw (2) to correct position of stop.

Sharpening Remaining Teeth

The sharpening process now depends on how the teeth are ground.

Saw blade without bevel ground teeth (scale C = 0°):

: Rotate the saw blade counter-

523BA129 KN

clockwise to the next tooth.

: Sharpen all teeth with the same

setting.

Saw blade with bevel ground teeth:

: Rotate the saw blade counter-

clockwise to the next tooth but one.

: Sharpen all the teeth in one row that

have the same sharpening angle (every second tooth).

: Then set scale C to the angle for the

opposite row of teeth – all other settings are left unchanged, do not turn the saw blade over.

: Now sharpen all the teeth in the

second row.

English

31USG

Page 33

English

Maintenance Chart

Please note that the following maintenance intervals apply for normal operating conditions. If your daily working time is longer than normal or conditions are difficult, shorten the specified intervals accordingly.

Complete machine

Machine mounting

Switch

Power supply cord

Grinding wheel

Cooling air inlets Clean

Accessible screws and nuts Retighten

Shield

Clamp and guide rail

Stop and lock

Visual inspection condition)

Clean

Check

Retighten

Check operation

Replace

Check

Replace

Check (wear)

Check profile

Dress

Replace

Check

Replace

Check

Replace

Check

Replace

before

starting work

after finishing

work or daily

weekly

monthly

if problem

if damaged

as required

Have work performed by qualified

electrician

USG

Page 34

Minimize Wear and Avoid Damage

English

Observing the instructions in this manual helps reduce the risk of unnecessary wear and damage to the unit.

The unit must be operated, maintained and stored with the due care and attention described in this owner’s manual.

The user is responsible for all damage caused by non-observance of the safety precautions, operating and maintenance instructions in this manual. This includes in particular:

– Alterations or modifications to the

product not approved by STIHL.

– Using attachments or sharpening

tools not approved by STIHL.

– Using the product for purposes for

which it was not designed.

– Consequential damage caused by

continuing to use the product with defective components.

Maintenance Work

All the operations described in the “Maintenance Chart” must be performed on a regular basis. If these maintenance operations cannot be performed by the owner, they should be performed by an authorized STIHL servicing dealer.

If these operations are not carried out as specified, the user assumes responsibility for any damage that may occur.

Among other things, this includes:

– Damage to the unit due to neglect

or deficient maintenance.

– Corrosion and other consequential

damage resulting from improper storage.

– Damage and consequential

damage resulting from the use of parts other than original STIHL replacement parts.

– Damage resulting from

maintenance or repair work not performed by authorized STIHL servicing dealers.

Parts Subject to Wear and Tear

Some parts of the unit are subject to normal wear and tear even during regular operation in accordance with instructions and, depending on the type and duration of use, have to be replaced in good time. Among other parts, this includes:

– Grinding wheels

– Carbon brushes

– Transparent shield

– Clamping lever and thrust pad

– Clamping and guide rails

–Stop

33USG

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English

Main Parts of Sharpener

678

Attachment for hedge trimmer blades

1 Star knob 2 Spring 3 Stop 4 Adjusting screw 5 Clamp 6 Angle iron rail

523BA133 KN

523BA132 KN

523BA134 KN

USG with attachment for Oilomatic saw chain

1 Motor 2 Switchbox 3 Attachment 4 Motor arm 5 Clamping lever 6 Thrust plate 7 Travel limiting screw 8 Stop 9 Adjusting screw

10 Grinding wheel 11 Stop lug

Attachment for circular saw blades

1 Locator 2 Shoulder stud 3 Clamping lever 4 Adjusting screw 5 Stop

USG

Page 36

English

Specifications Special Accessories Maintenance and Repairs

Motor

Type: Single-phase

AC, squirrel-cage motor

Operating voltage: 230 V

Frequency: 50 Hz Rated current: 1.3 A Power rating: 0.18 kW Motor speed: 2,800 RPM Equivalent sound

pressure level Lpeq 75 dB (A)

Work light

Foot-operated clamping attachment

Diamond dressing attachment

Filing gauge

Diamond grinding wheel for carbide tipped saw chain and carbide tipped circular saw blades

Attachment (tool rest) for scratcher tooth chain

Attachment (tool rest) for hedge trimmer blades

Attachment (tool rest) for circular saw blades

Saw set for checking and correcting tooth set

Contact your STIHL dealer for the latest information on these and other special accessories.

The user of this unit should carry out only the maintenance operations described in this manual. Other repair work may be performed only by an authorized STIHL dealer.

Warranty claims following repairs can be accepted only if the repair has been performed by an authorized STIHL dealer using original STIHL replacement parts.

Original STlHL parts can be identified by the STIHL part number, the

STIHl

logo and the STlHL parts symbol (. The symbol may appear alone on small parts.

according to EN ISO 11204,

measured at operator’s ear while sharpening a saw chain

35USG

Page 37

English

Certificate of Conformity Quality Certification

Andreas Stihl AG & Co. KG Badstr. 115 71336 Waiblingen

certify that the new machine described below

Category: Universal

sharpener Make: STIHL Model: USG Serial identification: 5203

conforms to the specifications of Directives 73/23/EEC, 98/37/EG and 89/336/EEC.

The product has been developed and manufactured in compliance with the following standards: EN 60335-1, EN 55014-1, EN 55014-2, EN 61000-3-2, EN 61000-3-3 and EN 60204-1

Technical documents deposited at: Andreas Stihl AG & Co. KG Product Licensing

Done at Waiblingen, September 1, 2003

Andreas Stihl AG & Co. KG

Steinhauser Director Group Product Management/ Engineering Services

000BA026

All STIHL products comply with the highest quality standards.

An independent organization has certified that all products manufactured by STIHL meet the strict requirements of the ISO 9001 standard for quality management systems in terms of product development, materials purchasing, production, assembly, documentation and customer service.

USG

Page 38

STIHL USG Owner's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Guide to Using this Manual

Safety Precautions

Applications Mounting the Tool

Selecting the Grinding Wheel

Mounting the Grinding Wheel

Test Run Dressing the

Scales

Setup for Sharpening Saw Chain

Sharpening Procedure

Lowering Depth Gauges

Setup for Sharpening Hedge Trimmer Blades

Sharpening Hedge Trimmer Blades

Preparations for Sharpening Circular Saw Blade

Sharpening Circular Saw Blade

Maintenance Chart

Minimize Wear and Avoid Damage

Main Parts of Sharpener

Specifications Special Accessories Maintenance and Repairs

Certificate of Conformity Quality Certification