Oregon 530-120H User guide

520-120 / 530-120H
1
ORIGINAL INSTRUCTION MANUAL
Bench Chain Grinder Model 520-120 / 530-120H
MANUEL D’INSTRUCTIONS ORIGINAL
Meuleuse électrique pour chaînes de scie
à moteur modèle 520-120 / 530-120H
MANUAL ORIGINAL DE INSTRUCCIONES
Afiladora eléctrica para cadenas
de motosierra modelo 520-120 / 530-120H

2

520-120 / 530-120H
3
ENGLISH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
WARNING: READ AND UNDERSTAND ALL SAFETY WARNINGS AND ALL INSTRUCTIONS. FAILURE TO FOLLOW THE
WARNINGS AND INSTRUCTIONS MAY RESULT IN ELECTRIC SHOCK, FIRE AND/OR SERIOUS INJURY.
SAVE ALL WARNINGS AND INSTRUCTIONS FOR FUTURE REFERENCE.
This instruction manual contains translations of a manual drafted in English and are provided to assist those
who do not speak English as their first language. Being a technical writing, some terms may not have a like or
equivalent meaning as translated. Therefore, you should not rely on this translation, and should cross-reference
the English version, where relying on the translated instructions could result in harm to your person or property.
FRANÇAIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
AVERTISSEMENT: VEUILLEZ LIRE ET COMPRENDRE TOUS LES AVERTISSEMENTS DE SÉCURITÉ ET
TOUTES LES INSTRUCTIONS. LE NON-RESPECT DES AVERTISSEMENTS DE SÉCURITÉ ET DES INSTRUCTIONS
PEUT ENTRAÎNER UNE DÉCHARGE ÉLECTRIQUE, UN INCENDIE ET/OU DES BLESSURES GRAVES.
CONSERVEZ L’ENSEMBLE DES AVERTISSEMENTS ET INSTRUCTIONS POUR RÉFÉRENCE ULTÉRIEURE.
Ce manuel d’instructions est une traduction d’un manuel rédigé en anglais, fournie pour aider ceux dont l’anglais
n’est pas la langue maternelle. Étant donné qu’il s’agit d’un document technique, certains termes peuvent ne pas
avoir de signification similaire ou équivalente lorsqu’ils sont traduits. Par conséquent, vous ne devez pas vous fier à
cette traduction et devriez consulter la version anglaise également, au cas où les instructions traduites pourraient
provoquer des blessures ou des dommages matériels.
ESPAÑOL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
ADVERTENCIA: LEA Y COMPRENDA TODAS LAS ADVERTENCIAS DE SEGURIDAD Y LAS INSTRUCCIONES.
LA OMISIÓN EN SEGUIR ESTAS ADVERTENCIAS E INSTRUCCIONES PODRÍA OCASIONAR UNA DESCARGA
ELÉCTRICA, UN INCENDIO Y/O LESIONES PERSONALES GRAVES.
GUARDE TODAS LAS ADVERTENCIAS E INSTRUCCIONES PARA REFERENCIA FUTURA.
Este manual de instrucciones contiene traducciones de un manual redactado en inglés y se provee para ayudar a
aquellas personas que no hablan inglés como su primer idioma. Dado que el manual es un documento técnico, es
posible que algunos términos no tengan un significado similar o equivalente al traducirlos. Por lo tanto, no debe
confiar en esta traducción y debe consultar la versión en inglés; confiar en las instrucciones traducidas podría
provocar lesiones personales o daños materiales.

520-120 / 530-120H
4
©  Blount, Inc. Pricing and specifications subject to change without notice. All rights reserved.
OREGON® is a registered trademark of Blount, Inc. in the United States and/or in other countries.
TABLE OF CONTENTS
Table of Contents
NAMES AND TERMS...................................................................... 5
SYMBOLS AND LABELS................................................................... 5
SAFETY INFORMATION................................................................... 6
SAFETY RULES AND PRECAUTIONS ............................................................6
SETTING UP THE GRINDER.....................................................................8
ELECTRICAL CONNECTION ....................................................................8
GROUNDING INSTRUCTIONS ..................................................................8
GENERAL INFORMATION ......................................................................9
USING AND KEEPING THE OPERATOR’S MANUAL ...............................................9
SAFETY DEVICES ..............................................................................9
INTENDED USE................................................................................9
TECHNICAL DATA .............................................................................9
PART DESCRIPTION .....................................................................11
GRINDING ANGLES CHART ..............................................................12
INSTRUMENTAL MEASUREMENTS........................................................12
MOUNTING THE BASE UNIT – BENCH ........................................................ 13
MOUNTING THE BASE UNIT – WALL.......................................................... 13
ASSEMBLY .................................................................................. 14
CHOOSING AND INSTALLING THE GRINDING WHEEL ......................................... 14
CENTERING THE GRINDING WHEEL BY POSITIONING THE VISE ASSEMBLY ..................... 17
SETTING THE SHARPENING ANGLES .....................................................19
FOR RIGHT-HAND CUTTERS WITHOUT A DOWN ANGLE (0°)................................... 20
FOR RIGHT-HAND CUTTERS WITH A DOWN ANGLE........................................... 21
FOR LEFT-HAND CUTTERS WITHOUT A DOWN ANGLE (0°) .................................... 23
FOR LEFT-HAND CUTTERS WITH A DOWN ANGLE ............................................ 24
PLACING THE CHAIN IN THE VISE.........................................................26
OPERATING INSTRUCTIONS .............................................................28
SHARPENING THE CHAIN.................................................................... 28
GRINDING WHEEL DRESSING FOR SETTING THE DEPTH GAUGE ............................... 30
SETTING THE DEPTH GAUGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
STOPPING AND SHUTTING DOWN .......................................................33
MAINTENANCE AND CLEANING..........................................................33
DEMOLITION AND DISPOSAL ............................................................33
WARRANTY
THE OREGON® CUSTOMER-SATISFACTION POLICY / LIMITED WARRANTY...................... 34
TROUBLESHOOTING ....................................................................35
ILLUSTRATED PARTS LIST ...............................................................36

520-120 / 530-120H
5
NAMES AND TERMS
Skilled Technician: a person who is generally employed by the service center and who is trained to carry
out extraordinary maintenance jobs and repairs on the machine.
SYMBOLS AND LABELS
These symbols and labels appear on the tool and/or in this manual.
SYMBOL NAME EXPLANATION
SAFETY ALERT
SYMBOL
INDICATES THAT THE TEXT THAT FOLLOWS EXPLAINS A
DANGER, WARNING, OR CAUTION.
READ INSTRUCTIONS
THE ORIGINAL INSTRUCTION MANUAL CONTAINS IMPORTANT
SAFETY AND OPERATING INFORMATION. READ AND FOLLOW
THE INSTRUCTIONS CAREFULLY.
WEAR EYE
PROTECTION WEAR EYE PROTECTION.
WEAR HAND
PROTECTION WEAR GLOVES WHEN HANDLING SAW CHAIN.
DO NOT DISPOSE DO NOT THROW IN HOUSEHOLD WASTE. TAKE TO AN
AUTHORIZED RECYCLER.
DAMAGED CABLE
INSPECT THE POWER CORD REGULARLY FOR DAMAGE.
REMOVE THE PLUG FROM THE MAINS IMMEDIATELY IF THE
CABLE IS DAMAGED OR CUT.
UNPLUG BEFORE
MAINTENANCE UNPLUG BEFORE PERFORMING ANY MAINTENANCE.
NAMES AND SYMBOLS

520-120 / 530-120H
6
SAFETY INFORMATION
FOR YOUR OWN SAFETY READ THIS
OPERATOR’S MANUAL BEFORE
OPERATING GRINDER
Keep this manual for future reference. To
ensure the correct use of the grinder and to
prevent accidents, do not start working without
having read this manual carefully. The manual
explains how the various components work
and provides instructions for carrying out the
necessary checks and maintenance operations.
SAFETY RULES AND PRECAUTIONS
WARNING The use of accessories or
attachments not recommended by the
manufacturer may result in a risk of injury to
operator or bystander. Any maintenance operation
not described in this manual must only be
carried out by an AUTHORIZED service center.
CAUTION The following instructions
should be carefully followed in order to
reduce the risk of kickback resulting from
improperly sharpened saw chain.
WARNING Replace cracked or
damaged grinding wheel immediately.
Serious injury to operator or bystander
could result from a damaged wheel.
USERS
The grinder must only be used by adults.
Users must be in good physical condition
and familiar with the instructions for use.
KEEP BYSTANDERS AND CHILDREN AWAY
All bystanders should be kept at a
safe distance from work area.
WEAR PROPER APPAREL
Never wear loose clothing, bracelets, neckties, rings
or any other jewelry that could come into contact
or get caught with the grinding wheel or any other
moving parts. Nonslip footwear is recommended.
Wear protective hair covering to contain long hair.
ALWAYS USE SAFETY GLASSES
AND GLOVES
Always wear gloves and protective eyewear
while operating the grinder and while retouching
the grinding wheel using the dressing stone.
Also use face or dust mask if cutting operation
is dusty. Everyday eyeglasses only have impact
resistant lenses, they are NOT safety glasses.
NEVER STOP THE WHEEL WITH YOUR HANDS
Never attempt to stop the rotation of the
grinding wheel with your hands.
DISCONNECT TOOLS BEFORE SERVICING
Make sure the plug is disconnected when tting
or changing the grinding wheel and during any
other operation of maintenance or transport.
KEEP GUARDS IN PLACE AND
IN WORKING ORDER
Never start the grinder without
the wheel guards in place.
REMOVE ADJUSTING KEYS AND WRENCHES
Make sure that keys and adjusting wrenches
are removed from tool before turning it on.
DON’T FORCE TOOL
It will do the job better and safer at the
rate for which it was designed. Each
grinder has a plate indicating:
–Size of arbor: Ø .866" (22 mm)
–No-load speed in revolutions
per minute: RPM 3400
–Always read operator’s manual
before operating the machine
–Always wear eye and face protection
–Always use the proper grinding wheel
Also make sure that the voltage and frequency
indicated on the plate applied to the grinder
correspond to those of the mains hook-up.
REDUCE THE RISK OF
UNINTENTIONAL STARTING
Always make sure that the start-up
switch is in the“0” (OFF) position before
connecting the plug to the outlet.
NEVER USE CABLES, PLUGS OR
EXTENSION CABLES THAT ARE
DEFECTIVE OR NON-STANDARD
See “Minimum Extension Cord Gauges”table
on page 8. Remove the plug from the mains
immediately if the cable is damaged or cut;
for cable repair or replacement, contact your
authorized dealer or service center. The power
supply cable is complete with terminals – with
protection. The internal electrical connection
consists of inserting the feeding cable terminals
directly in the switch. The electrical connection
to the mains shall be made in such a way as
to prevent damage by people or vehicles
which could endanger both them and you.
KEEP WORK AREA CLEAN
Cluttered areas and benches invite accidents.
Make sure that the grinding wheel working
area is free of tools or other objects before
starting up the grinder. Frequently clean
grinding dust from beneath grinder.
SAFETY INFORMATION

520-120 / 530-120H
7
DON’T USE IN DANGEROUS ENVIRONMENTS
Don’t use power tools in damp or wet locations, or
expose them to rain. Keep work area well-lighted.
CHECK THE POSITION OF THE
CABLE DURING OPERATION
Make sure that the cable remains outside
the range of action of the grinding wheel
and is not under tension. Never operate in
the vicinity of other electrical cables.
DIRECTION OF FEED
Feed work into a blade or cutter against
the direction of rotation of the blade or
cutter only. Never advance the chain with
your left hand until the grinding wheel has
moved entirely outside the work area.
MAKE WORKSHOP CHILD PROOF
Use padlocks, master switches. Do not
allow anyone but the user to remain in the
vicinity of the grinder while it is operating
or to touch the grinder supply cable.
ALWAYS KEEP THE HAND GRIPS
CLEAN AND DRY
SECURE GRINDING WHEEL
Make sure the grinding wheel is secured
before starting the grinder. Do not
over-tighten the wheel nut.
SECURE WORK
Make sure that the machine is stable
and rmly secured. Use the vise to hold
chain. This frees both hands for moving
the wheel down to grind the chain.
DON’T OVERREACH
Keep proper footing and balance at all times.
NEVER STAND ON TOOL
Always work in a stable and safe position. Serious
injury could occur if the tool is tipped or if the
cutting tool is unintentionally contacted.
ALWAYS FOLLOW MAINTENANCE
INSTRUCTIONS
CHECK FOR DAMAGED PARTS
Before using the grinder, check to make sure
that all the devices, those for safety and others,
are in good working order. A guard, a wheel or
other part that is damaged should be carefully
checked to determine that it will operate properly
and perform its intended function – check for
alignment of moving parts, binding of moving
parts, breakage of parts, mounting, and any other
conditions that may aect its operation. A guard,
a wheel or other part that is damaged should
be properly repaired or immediately replaced.
USE RECOMMENDED ACCESSORIES
Consult the operator’s manual for recommended
accessories. The use of improper accessories may
cause risk of injury to persons. Use only anges
furnished with the grinder. To guarantee the
ecient and consistent operation of your grinder,
remember that any worn or broken parts must
only be replaced using ORIGINAL SPARE PARTS.
USE ONLY RECOMMENDED GRINDING WHEELS
CHECK YOUR MACHINE
Never work with a damaged, poorly repaired,
incorrectly tted, or arbitrarily modied grinder. Do
not remove, damage, or disable any safety device.
USE THE RIGHT TOOL
Never use the grinder as a cutter or for
grinding objects other than saw chains.
Don’t force tool or attachment to do a
job for which it was not designed.
EXPERT USERS ONLY
Only lend your grinder to expert users who
are familiar with its operation and correct
use, and always give them the operator’s
manual to read before they start a job.
MAINTAIN TOOLS WITH CARE
Keep tools sharp and clean for best and
safest performance. Follow instructions for
lubricating and changing accessories.
STORE YOUR GRINDER IN A DRY PLACE
Keep it o the ground and out
of the reach of children.
NEVER LET YOUR GRINDER BE
EXPOSED TO RAIN OR DAMPNESS
NEVER USE THE GRINDER IN AN EXPLOSIVE
OR INFLAMMABLE ATMOSPHERE
TAKE THE GRINDER TO YOUR DEALER
When your grinder is not in working order, do not
abandon it on the work site or elsewhere. Take it to
your dealer who will store or dispose of it correctly.
CONSULT YOUR DEALER
Always consult your dealer for any clarication
or important maintenance or repair operation.
NEVER JERK THE CABLE TO
DISCONNECT IT FROM THE OUTLET
Keep the cable away from heat,
oil, and sharp objects.
USE PROPER EXTENSION CORD
Make sure your extension cord is in good
condition. When using an extension cord, be
sure to use one heavy enough to carry the
current your product will draw. An undersized
cord will cause a drop in line voltage resulting
in loss of power and overheating.
SAFETY INFORMATION

520-120 / 530-120H
8
The table below shows the correct size to use
depending on cord length and nameplate ampere
rating. If in doubt, use the next heavier gauge. The
smaller the gauge number, the heavier the cord.
Minimum Extension Cord Gauges
for 520-120 / 530-120H Grinder
Length Gauge, AWG
25 ft. / 7.6 m 18
50 ft. / 15.2 m 16
100 ft. / 30.5 m 16
150 ft. / 45.7 m 14
NEVER LEAVE TOOL RUNNING UNATTENDED
Turn power o. Do not leave tool until
it comes to a complete stop.
SETTING UP THE GRINDER
CAUTION The grinder must only be used in a
place that is protected from dust and dampness,
is well-lit, out of the reach of children, and away
from gases or other ammable or explosive liquids.
The grinder must be situated near a
normal grounded electrical outlet. Avoid
using dangerous extension cables.
ELECTRICAL CONNECTION
–Make sure the electrical system power
supply complies with the values
written on the rating nameplate.
–The power supply voltage must not dier
from that written on the nameplate by ±5%.
–The connection to the electric mains must be
prepared subject to current standards in force
in the country in which the machine is used.
–The mains used for the machine must be
grounded, have an adequate fuse, and must be
protected by a ground fault protection device
with tripping sensitivity no higher than 30 mA.
GROUNDING INSTRUCTIONS
A. In the event of malfunction or breakdown,
grounding provides a path of least resistance
for electric current to reduce the risk of electric
shock. This tool is equipped with an electric cord
having an equipment-grounding conductor and
a grounding plug. The plug must be plugged
into a matching outlet that is properly installed
and grounded in accordance with all local
codes and ordinances. Do not modify the plug
provided – if it will not t the outlet, have the
proper outlet installed by a qualied electrician.
Improper connection of the equipment-grounding
conductor can result in a risk of electric shock.
The conductor with insulation having an outer
surface that is green with or without yellow
stripes is the equipment-grounding conductor.
If repair or replacement of the electric cord or
plug is necessary, do not connect the equipment-
grounding conductor to a live terminal.
Check with a qualied electrician or service
personnel if the grounding instructions are
not completely understood or if in doubt as
to whether the tool is properly grounded.
Use only 3-wire extension cords that have
3-prong grounding plugs and 3-pole receptacles
that accept the tool’s plug. Repair or replace
damaged or worn cord immediately.
B. Grounded, cord-connected tools intended for
use on a supply circuit having a nominal rating
less than 150V~. This tool is intended for use on
circuit that has an outlet that looks like the one
illustrated in FIG. A. The tool has a grounding
plug that looks like the plug illustrated in FIG. B. A
temporary adapter, which looks like the adapter
illustrated in FIG. C, may be used to connect this
plug to a 2-pole receptacle as shown if a properly
grounded outlet is not available. The temporary
adapter should be used only until a qualied
electrician can install a properly grounded outlet.
The Grounding Means green-colored rigid ear,
lug, and the like, extending from the adapter
must be connected to a permanent ground
such as a properly grounded outlet box.
FIG. A
Cover of
grounded
outlet box
Cover of grounded
outlet box
Adapter
Grounding
Means Metal
Screw
FIG. B
Grounding
Pin
FIG. C
SAFETY INFORMATION

520-120 / 530-120H
9
GENERAL INFORMATION
The manufacturer is not liable for
damages in the following cases:
–Failed observance of the
instructions given herein;
–Use of the machine other than that
described in the“INTENDED USE”section;
–Failure to use in compliance with current
standards on Health & Safety at the workplace;
–Incorrect installation;
–Lack of scheduled maintenance;
–Modications or jobs that are not
authorized by the manufacturer;
–Use of non–original or inadequate spare parts;
–Repairs that are not carried out by a specialist.
USING AND KEEPING THE
OPERATOR’S MANUAL
The characteristics and the information
given in this manual are merely indicative.
The manufacturer reserves the right to add
any modications to the grinder considered
necessary at any time. It is forbidden to
reproduce any part of this document without
authorization on behalf of the manufacturer.
The operator’s manual is an integral part of the
machine and must be kept in a safe place so that
it can be consulted whenever need be. If you
should lose your manual or it should deteriorate,
you can request your dealer or an authorized
service center for another copy. The manual
shall accompany the machine at all times.
SAFETY DEVICES
The grinder is equipped with the safety
devices illustrated on page 10:
– Shield guards: they protect the operator
from parts of the grinding wheel that may
come away during the sharpening process.
These guards must always be tted in place
when the machine is in use. Always make sure
the guards are ecient and tted properly.
Operator safety could be compromised if
the guards are damaged and/or cracked.
– Switch: the machine features a safety switch with
release coil. In the case of a sudden power failure,
the switch trips automatically and disconnects
the machine from the mains. The machine will
not start even if the power supply is suddenly
restored. You need to restart the grinder by
turning the on-o switch to the on position,“l”.
– Lock pin: this is used to block the arm in the
completely raised position. When the pin is
loosened, the arm is blocked. This condition
is required when adjusting the sharpening
angles, when replacing and dressing the
grinding wheel. When the pin is tightened,
the arm is free to move. This condition is
required during the sharpening process.
INTENDED USE
This machine is an electrical grinder for
saw chains used on chain saws.
–Use the machine exclusively for the types of
chains stated in the technical data chart.
–Do not use the machine to cut or grind
anything other than the chains envisaged.
–Secure the machine rmly to the bench or wall.
–The machine must not be used in
corrosive or explosive environments.
–Any other use is to be considered improper. The
manufacturer is not liable for damages following
improper or incorrect use of the machine.
TECHNICAL DATA
Model 520-120 530-120H
Voltage 120V~ 60Hz
Rated power 300W
Grinding wheel
dimensions
Outside Ø :
5 3/4" (145 mm)
Inside Ø:
7/8" (22,2 mm)
Thickness:
1/8" (3.2 mm)
3/16" (4.7 mm)
5/16" (8.0 mm)
Outside Ø :
5 3/4”(145 mm)
Inside Ø:
7/8”(22,2 mm)
Thickness:
1/4”(6.0 mm)
5/16”(8.0 mm)
Maximum
speed of
grinding wheel
3400 min-1
Maximum
power of lamp
15W
Acoustic
pressure level
77 dB(A)
Level of
vibrations
on operating
handle
< 2,5 m/s2
Types of chains
that can be
sharpened
1/4"
.325"
3/8"
.404"
3/4”
Weight
(complete
machine)
18.5 lbs. / 8.4 kg
SAFETY INFORMATION

520-120 / 530-120H
10
0
520-120 = 3
530-120H = 2
B
A
C
D
E
F
GH
J
I
K
L
M
NOPQ
4
3
2
75
6
8
9
13
14
11 12
15
16
17 18 19
20
1
10
PART DESCRIPTION

520-120 / 530-120H
11
PART DESCRIPTION
The grinder is supplied already partially assembled.
A. Upper housing / motor unit
B. Base unit
C. Operating handle securing bolt
D. Operating handle securing nut
E. Operating handle
F. Guard securing screws (2)
G. Shield guard
H. Arbor shield
I. Upper housing locking nut (for wall-mount only)
J. Upper housing locking knob (for bench-mount only)
K. Upper housing securing bolt
L. Upper housing washer
M. Grinding wheels (520-120):
5 3/4" x 1/8" x 7/8" (145 x 3.2 x 22.2 mm)
5 3/4" x 3/16" x 7/8" (145 x 4.7 x 22.2 mm)
5 3/4" x 5/16" x 7/8" (145 x 8 x 22.2 mm)
M. Grinding wheels (530-120H):
5 3/4" x 1/4" x 7/8" (145 x 6 x 22.2 mm)
5 3/4" x 5/16" x 7/8" (145 x 8 x 22.2 mm)
N. Sharpening template
O. 4 mm Allen wrench
P. 5 mm Allen wrench
Q. Dressing brick
1. Operating handle mounting hole
2. Arbor shield mounting hole
3. Grinding wheel hub
4. Grinding wheel ange screw
5. Grinding wheel ange
6. Height adjustment knob
7. Shield guard mounting hole
8. Locking pin
9. Upper housing / motor unit mounting hole
10. Saw chain cutter adjustment knob
11. Chain stop adjustment knob
12. Chain stop
13. Head tilt angle guide plate
14. Upper housing / motor unit mounting slot
15. Vise handle
16. Vise (chain jaws)
17. Vise rotate angle guide plate
18. Vise adjustment knob
19 Vise reference mark pointers
20. Grinding wheel wear
compensation reference marks
PART DESCRIPTION

520-120 / 530-120H
12
GRINDING ANGLES CHART
GRINDING ANGLES CHART
|X|
Wheel Width
A
Vise Rotate Angle
B
Down Angle
C
Head Tilt Angle
D
Depth Gauge
XA B C D
MICRO
CHISEL®
20-21-22BPX
20-21-22P 3/16" 30° 10° 55° .025" .65 mm
25AP, 25A, 25F 1/8" 30° 0° 55° .025" .65 mm
27A, 27AX 3/16" 30° 10° 55° .030" .75 mm
95VPX 3/16" 30° 10° 55° .025" .65 mm
ROUND
GROUND
CHISEL
20-21-22LPX
M20-21-22LPX 3/16" 25° 10° 55° .025" .65 mm
58, 59L, J 3/16" 25° 10° 55° .025" .65 mm
68JX, LX 3/16" 25° 10° 55° .030" .75 mm
72-73-75JGX,
JPX, LGX, LPX,
M72-73-75LPX
3/16" 25° 10° 55° .025" .65 mm
72-73-75V 3/16" 25° 10° 55° .025" .65 mm
SEMI
CHISEL
72APX/72-73-75DPX 3/16" 35° 10° 55° .025" .65 mm
91PXL, 91VXL,
M91VLX 1/8" 30° 0° 55° .025" .65 mm
RIPPING
CHAIN
27R, RA 3/16" 10° 10° 50° .030" .75 mm
72-73-75RD 3/16" 10° 10° 50° .025" .65 mm
CHAMFER
CHISEL™
90PX, 90S, 90SG 1/8" 30° 0° 55° .025" .65 mm
91P, 91PX, 91VG,
91VX, M91VX 1/8" 30° 0° 55° .025" .65 mm
SEMI
CHISEL
3/4"
11H 5/16" 30° 0° 50° .070" 1.7 mm
CHIPPER
3/4" 11BC 5/16" 35° 0° 60° .060" 1.5 mm
INSTRUMENTAL MEASUREMENTS
A Measure the gauge
depth using the
suitable shape.
B Measure the
cutter length.
C Measure the
chain pitch.
A
B
C
A
B
C

520-120 / 530-120H
13
PREPARING FOR USE
ATTENTION Do not install the machine at eye level. You are recommended to install it at a height of no
more than 3.9 to 4.2 feet (1.2 – 1.3 m) from the oor.The machine can be bench mounted or wall mounted.
MOUNTING THE BASE UNIT – BENCH
BENCH-MOUNTING
Use two (2) appropriate bolts complete
with washers and nuts (not supplied),
inserted in the securing holes. Make sure
you position the base unit hanging over the
edge of the bench as shown in the detail.
SECURING THE UPPER HOUSING / MOTOR UNIT
Insert the bolt (K) in the dedicated hole (9) in
the motor unit (A) and through the mounting
slot (14) in the base unit (B). Insert the washer (L)
at the back and tighten the locking knob (J).
NOTE: you may need to depress the upper
housing to ensure correct alignment
B
B
A
J
K
L
914
MOUNTING THE BASE UNIT – WALL
NOTE: assemble the upper housing / motor unit (A) to the base unit (B) before mounting to your wall.
SECURING THE UPPER HOUSING / MOTOR UNIT
Insert the bolt (K) in the dedicated hole (9) in
the motor unit (A) and through the mounting
slot (14) in the base unit (B). Insert the washer
(L) at the back and tighten the locking nut (I).
NOTE: you may need to depress the upper
housing to ensure correct alignment
NOTE: motor unit will need to be
adjusted by loosening and tightening
nut with a wrench (not supplied).
WALL-MOUNTING
Use two (2) appropriate bolts
complete with washers (not supplied),
inserted in the securing holes.
B
AI
K
L
914
B
PREPARING FOR USE

520-120 / 530-120H
14
PREPARING FOR USE
ASSEMBLY
SECURING THE OPERATING HANDLE
Completely screw the operating
handle (E) onto the bolt (C).
AC
E
CHOOSING AND INSTALLING THE GRINDING WHEEL
WARNING
–Do not force the grinding wheel (M) on the hub (3) and do not alter the center hole
diameter. Do not use grinding wheels that do not t perfectly in place.
–Ensure hub (3) and ange (5) are clean and intact.
CHOOSE THE GRINDING WHEEL
Choose the correct size grinding wheel
based on the type of chain to be sharpened
(see the chain chart on page 12).
TESTING THE GRINDING WHEEL
Hold the grinding wheel (M) up by its center
hole. Knock the edge of the grinding wheel
gently with a non-metallic object. If it makes
a dull, non-metallic noise it means that the
wheel could be damaged: do NOT use it!
REMOVE ARBOR SHIELD
Using the 4 mm Allen wrench (O), remove
the arbor shield (H), by removing the
guard securing screw (F) from hole (2).
M
A
2
F
O
H

520-120 / 530-120H
15
REMOVE FLANGE
Using the 5 mm Allen wrench (P), remove
the grinding wheel ange screw (4) and the
grinding wheel ange (5) from the hub.
INSTALL GRINDING WHEEL
Insert and perfectly center the grinding wheel
(M) in the dedicated seat on the hub (3).
REINSTALL FLANGE
Using the 5 mm Allen wrench, insert the
ange (5) and tighten the screw (4).
Make sure you t the ange as illustrated. If the
grinding wheel is tted with the ange too tight,
it could break during use and put the operator at
risk. To avoid such risk, tighten screw (4) to 62 in-
lbs. (7 Nm). If possible, check with a torque wrench.
REINSTALL ARBOR SHIELD
Using the 4 mm Allen wrench (O),
reinstall the arbor shield (H), with a
guard securing screw (F) in hole (2).
P
A
54
A
M
3
P
A
54
A
2
F
O
H
PREPARING FOR USE

520-120 / 530-120H
16
START-UP
Rotate the locking pin (8) counterclockwise
to block the motor unit (A).
Plug the power cable into the mains.
CHECKING THE ASSEMBLY OF
THE GRINDING WHEEL
Stand at the side of the grinding wheel.
Start the grinder by turning the
switch to position“l”.
Once started, the lamp lights up to
illuminate the sharpening area.
Visually make sure the grinding wheel
does not oscillate sideways or crosswise,
consequently causing abnormal vibrations.
If this should be the case, stop the machine
immediately and check if the grinding wheel
has been tted correctly. If necessary, replace
the grinding wheel with another original one.
Always check a freshly tted grinding
wheel at working speed for at least one minute
before you start grinding, standing at a safe
distance to the side of the grinder, making
sure no one else approaches the machine.
8
A
B
N
M
A
PREPARING FOR USE

520-120 / 530-120H
17
CENTERING THE GRINDING WHEEL BY POSITIONING THE VISE ASSEMBLY
The grinder works best when the grinding wheel is centered over the vise.
NOTE: You will need to re-center the grinding wheel as it wears. Periodically
check that the grinding wheel is centered and adjust as necessary.
Turn the vise so that the “0” reference mark is on 0°.
Rotate the entire motor unit (A) until
the“0”reference mark on the edge of
the arm is positioned at 90° (13).
Rotate the locking pin (8) clockwise
to release the motor unit (A).
Place a straight edge, like a ruler, in the vise
jaws (16) to the right of the motor unit. Pull
the vise handle (15) to the right to tighten.
Pull the motor unit downwards using handle (E)
and see if the ruler lines up with the guard securing
screw (F) that holds the arbor shield (H) in place.
19
A
13
8
A
B
16
15
H
F
E
PREPARING FOR USE

520-120 / 530-120H
18
If the straight edge is not centered, using
the 4 mm Allen wrench (O), loosen the
securing screws on the bottom of base (B).
Move the vise assembly forward or back
until the straight edge lines up to the guard
securing screw (F), referencing the grinding
wheel wear reference marks (20).
Using the 4 mm Allen wrench (O), tighten the
securing screws on the bottom of base (B).
CHECKING THE GRINDING WHEEL SHAPE
With the machine turned o, check the
grinding wheel (M) prole using the
measuring template (N); if necessary, dress
the wheel to restore the correct prole.
GRINDING WHEEL DRESSING
Wear personal protection equipment.
Start the grinder by turning the
switch to position“l”.
Prole the grinding wheel with the dressing
brick (Q), always working with extreme caution,
holding it with two hands rmly and eectively.
WARNING Contact with the grinding
wheel while it spins at high speed may
cause burning and abrasions.
B
O
20
B
O
N
M
M
Q
PREPARING FOR USE

520-120 / 530-120H
19
Stop the grinder by turning the
switch to position“O”.
Check if the grinding wheel (M) prole is
correct using the template (N). Continue to
dress wheel until prole matches template.
N
M
SETTING THE SHARPENING ANGLES
SETTING THE SHARPENING ANGLES
WARNING
–Wear personal protection equipment when sharpening.
–All adjustments must be made with the motor switched o and the grinding wheel completely stopped.
–In the case of accidental impact or collision of the grinding wheel during the sharpening process, follow
the instructions given in the“CHOOSING AND INSTALLING THE GRINDING WHEEL – WARNINGS” section.
–Clean the chain before sharpening it.
–To avoid overloading the motor excessively and to avoid damaging the chain cutters, grind minimum
quantities of material and do not stop along the same cutter as this could burn the cutting edge.
–Do not use cooling liquids during the sharpening process.
WARNING Grinding creates sparks which could ignite ammable materials. Do not
operate grinder in presence of ammable materials or explosive atmospheres.
Rotate the locking pin (8) counterclockwise
to block the motor unit (A).
8
A
B

520-120 / 530-120H
20
FOR RIGHT-HAND CUTTERS WITHOUT A DOWN ANGLE (0°)
Once you have established the type of chain to be sharpened, look up the adjustment angles
(vise, down and head tilt angles) in the“Grinding Angles Chart”on page 12 (columns A/B/C).
NOTE: if your chain has a down angle in column B on the “Grinding Angles Chart,”
please see the“For Right-Hand Cutters with a Down Angle”section on page 21.
SETTING THE VISE ROTATE ANGLE
Loosen the vise adjustment knob (18).
Turn the vise clockwise.
Position the“0” reference mark pointer (19)
on the vise by the desired vise rotate angle.
Tighten the vise adjustment knob (18) .
SETTING THE HEAD TILT ANGLE
Loosen the arm locking knob (J) at
the back of the motor unit (A).
Rotate the entire motor unit (A) until the “0
angle”reference mark on the edge of the arm is
positioned at the desired head tilt angle (13).
Tighten the locking knob (J) at
the back of motor unit (A).
18
19
18
J
A
A
13
J
A
SETTING THE SHARPENING ANGLES