Ironton 57520 User manual

READ & SAVE THESE INSTRUCTIONS
Electric Chainsaw Sharpener
Owner’s Manual
WARNING: Read carefully and understand all ASSEMBLY AND OPERATION
INSTRUCTIONS before operating. Failure to follow the safety rules and other basic safety
precautions may result in serious personal injury.
Item #57520

Page 2 of 18
Thank you very much for choosing an Ironton™product!
For future reference, please complete the owner’s record below:
Serial Number/Lot Date Code: ________________________________
Purchase Date: ____________________________________________
Save the receipt, warranty, and this manual. It is important that you read
the entire manual to become familiar with this product before you begin
using it.
This sharpener is designed for certain applications only. Northern Tool
and Equipment is not responsible for issues arising from modification or
improper use of this product such as an application for which it was not
designed. We strongly recommend that this product not be modified
and/or used for any application other than that for which it was designed.
For technical questions, please call 1-800-222-5381.

Page 3 of 18
Table of Contents
Intended Use..........................................................................................................................................4
Technical Specifications......................................................................................................................4
Important Safety Information...............................................................................................................4
Specific Operation Warnings...............................................................................................................6
Grounding..............................................................................................................................................6
Extension Cords....................................................................................................................................7
Main Parts of Sharpener.......................................................................................................................8
Assembly Instructions..........................................................................................................................8
Before Each Use....................................................................................................................................9
Operating Instructions..........................................................................................................................9
After Each Use.....................................................................................................................................12
Maintenance ........................................................................................................................................12
Troubleshooting..................................................................................................................................13
Parts Diagram......................................................................................................................................14
Parts List..............................................................................................................................................15
Replacement Parts..............................................................................................................................16
Limited Warranty.................................................................................................................................17

Page 4 of 18
Intended Use
The Ironton Electric Chainsaw Sharpener is designed to sharpen most types of chainsaw chains.
Technical Specifications
Property
Specification
Electrical Rating
120VAC / 60Hz / 85W
Motor No Load Speed
4,200 RPM
Saw Chain Pitch
1/4″ and 3/8″
Arbor Size
7/8″
Vise Capacity
0.05″ to 0.067″
Max. Accessory Diameter
4-1/4″
Max. Wheel Thickness
1/8″
Mounting Hardware
2x1/4″ Bolts and Nuts (sold separately)
Important Safety Information
⚠WARNING
Read and understand all instructions. Failure to follow all instructions may result in serious injury
or property damage.
The warnings, cautions, and instructions in this manual cannot cover all possible conditions or
situations that could occur. Exercise common sense and caution when using this tool. Always be
aware of the environment and ensure that the tool is used in a safe and responsible manner.
Do not allow persons to operate or assemble the product until they have read this manual and
have developed a thorough understanding of how it works.
Do not modify this product in any way. Unauthorized modification may impair the function and/or
safety and could affect the life of the product. There are specific applications for which the product
was designed.
Use the right tool for the job. DO NOT attempt to force small equipment to do the work of larger
industrial equipment. There are certain applications for which this equipment was designed. This
product will be safer and do a better job at the capacity for which it was intended. DO NOT use
this equipment for a purpose for which it was not intended.
Industrial or commercial applications must follow OSHA requirements.
⚠WARNING
WORK AREA SAFETY
Inspect the work area before each use. Keep work area clean, dry, free of clutter, and well-lit.
Cluttered, wet, or dark work areas can result in injury. Using the product in confined work areas
may put you dangerously close to cutting tools and rotating parts.
Do not use the product where there is a risk of causing a fire or an explosion; e.g., in the presence
of flammable liquids, gases, or dust. The product can create sparks, which may ignite the
flammable liquids, gases, or dust.

Page 5 of 18
Do not allow the product to come into contact with an electrical source. The tool is not insulated
and contact will cause electrical shock.
Keep children and bystanders away from the work area while operating the tool. Do not allow
children to handle the product.
⚠WARNING
PERSONAL SAFETY
Stay alert, watch what you are doing, and use common sense when operating the tool. Do not use
the tool while you are tired or under the influence of drugs, alcohol, or medication. A moment of
inattention while operating the tool may result in serious personal injury.
Dress properly. Do not wear loose clothing, dangling objects, or jewelry. Keep your hair, clothing
and gloves away from moving parts. Loose clothes, jewelry, or long hair can be caught in moving
parts. Air vents on the tool often cover moving parts and should be avoided.
Wear the proper personal protective equipment when necessary. Use ANSI Z87.1 compliant safety
goggles (not safety glasses) with side shields, or when needed, a face shield. Use a dust mask in
dusty work conditions. Also use non-skid safety shoes, hardhat, gloves, dust collection systems,
and hearing protection when appropriate. This applies to all persons in the work area.
Do not overreach. Keep proper footing and balance at all times.
Do not use the tool when tired or under the influence of drugs, alcohol or medication.
Remove keys or wrenches before connecting the tool to an air supply, power supply, or turning on
the tool. A wrench or key that is left attached to a rotating part of the tool may cause personal
injury.
Secure the work with clamps or a vise instead of your hand when practical. This safety precaution
allows for proper tool operation using both hands.
⚠CAUTION
SHARPENER USE AND CARE
Do not force the sharpener. Products are safer and do a better job when used in the manner for
which they are designed. Plan your work, and use the correct product for the job.
Check for damaged parts before each use. Carefully check that the product will operate properly
and perform its intended function. Replace damaged or worn parts immediately. Never operate the
product with a damaged part.
Do not use a product with a malfunctioning switch. Any power tool that cannot be controlled with
the power switch is dangerous and must be repaired by an authorized service representative
before using.
Disconnect the power/air supply from the product and place the switch in the locked or off position
before making any adjustments, changing accessories, or storing the tool. Such preventive safety
measures reduce the risk of starting the tool accidentally.
Store the sharpener when it is not in use. Store it in a dry, secure place out of the reach of

Page 6 of 18
children. Inspect the tool for good working condition prior to storage and before re-use.
Use only accessories that are recommended by the manufacturer for use with your product.
Accessories that may be suitable for one product may create a risk of injury when used with
another tool. Never use an accessory that has a lower operating speed or operating pressure than
the tool itself.
Keep guards in place and in working order. Never operate the product without the guards in place.
Do not leave the tool running unattended.
Specific Operation Warnings
⚠WARNING
FOR SHARPENER
Wear ANSI Z87.1 compliant safety goggles.
Do not use grinding wheels that have a max RPM less than the marked RPM rating on the tool.
Keep hands clear from grinding wheel during use.
Electric shock hazard. Do not expose to rain or use in damp locations.
Do not use for wet grinding.
Do not use wheel if cracked or chipped.
Not for use by or around children.
Disconnect tools before servicing; when changing accessories, such as blades, bits, cutters, and
the like.
Reduce the risk of unintentional starting. Make sure switch is in off position before plugging in.
Direction of feed. Feed work into a blade or cutter against the direction of rotation of the blade or
cutter only.
FOR GRINDING DISC
Do not exceed rated speed.
Always wear the proper personal protective equipment including eyewear, ear protection, and
facemasks.
Do not use if wheel is damaged.
Do not overtighten mounting nut.
Always ensure the appropriate guards are installed.
Store out of reach of children.
Grounding
⚠WARNING
This machine must be grounded while in use to protect the operator from electrical shock. This

Page 7 of 18
unit is equipped with an electrical cord that has an equipment grounding conductor and a
grounding plug. The plug MUST be plugged into a matching receptacle that is properly installed
and grounded in accordance with ALL local codes and ordinances.
DO NOT MODIFY THE PROVIDED PLUG. If it will not fit the receptacle, have the proper
receptacle installed by a qualified electrician.
CHECK with a qualified electrician or service person if you do not completely understand the
grounding instructions, or if you are not sure the tool is properly grounded.
Grounded Tools: Tools with 3-Prong Plugs
Tools marked with Grounding Required have a 3-wire cord and 3-prong grounding plug. The plug
must be connected to a properly grounded outlet. If the tool should electrically malfunction or break
down, grounding provides a low resistance path to carry electricity away from the user, reducing the
risk of electric shock. (See Figure A.)
The grounding prong in the plug is connected through the green wire inside the cord to the grounding
system in the tool. The green wire in the cord must be the only wire connected to the tool’s grounding
system and must never be attached to an electrically live terminal.
Your tool must be plugged into an appropriate outlet, properly installed and grounded in accordance
with all codes and ordinances. The plug and outlet should look like those in the following illustration.
Double Insulated Tools: Tools with Two-Prong Plugs
Tools marked Double Insulated do not require grounding. They have a special double insulation
system which satisfies OSHA requirements and complies with the applicable standards of
Underwriters Laboratories, Inc., the Canadian Standard Association, and the National Electrical Code.
(See Figure B.)
Double insulated tools may be used in either of the 120 volt outlets shown in the following illustration.
Extension Cords
⚠WARNING

Page 8 of 18
USE A 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 cause
overheating.
Be sure your extension cord is properly wired and in good condition. Always replace a damaged
extension cord or have it repaired by a qualified person before using it. Protect your extension
cords from sharp objects, excessive heat and damp or wet areas.
Grounded tools require a 3-wire extension cord. Double Insulated tools can use either a 2- or 3-
wire extension cord.
As the distance from the supply outlet increases, you must use a heavier gauge extension cord.
Using extension cords with inadequately sized wire causes a serious drop in voltage, resulting in
loss of power and possible tool damage.
The smaller the gauge number of the wire, the greater the capacity of the cord. For example, a
14-gauge cord can carry a higher current than a 16-gauge cord. Minimum extension cord wire
size is shown in the following table:
Minimum Wire Size Of Extension Cords
Nameplate AMPS
Cord Length
25'
50'
100'
150'
0-6
18 AWG
16 AWG
16 AWG
14 AWG
6-10
18 AWG
16 AWG
14 AWG
12 AWG
10-12
16 AWG
16 AWG
14 AWG
12 AWG
12-16
14 AWG
12 AWG
NOT RECOMMENDED
When using more than one extension cord to make up the total length, make sure each cord
contains at least the minimum wire size required.
If you are using one extension cord for more than one tool, add the nameplate amperes and use
the sum to determine the required minimum cord size.
If you are using an extension cord outdoors, make sure it is marked with the suffix W-A (Win
Canada) to indicate it is acceptable for outdoor use.
Make sure your extension cord is properly wired and in good electrical condition. Always replace
a damaged extension cord or have it repaired by a qualified electrician before using it.
Protect your extension cords from sharp objects, excessive heat, and damp or wet areas.
Main Parts of Sharpener
Reference
Subassembly
1
Mount Base
2
Motor
3
Vise
4
Vise Cable
Assembly Instructions
⚠WARNING
The sharpener must be mounted on a horizontal surface.

Page 9 of 18
1. Position the sharpener on the mounting surface so that the mounting stop butts up against the
vertical edge of the surface.
2. Using the base as a template, mark locations of mounting holes.
3. Drill pilot holes appropriate for the proper hardware (sold separately) at the marked locations.
4. Align mounting holes with pilot holes, and then secure the base with the hardware.
Before Each Use
⚠WARNING
To prevent serious injury from accidental operation: Turn the power switch of the tool off and
unplug the tool from its electrical outlet before performing any procedure.
Inspect the general condition of the tool. Check for: loose hardware, misalignment or binding of
moving parts, cracked or broken parts, damaged electrical wiring, and any other condition that
may affect its safe operation.
Operating Instructions
⚠WARNING
FOR SHARPENER
Wear ANSI Z87.1 compliant safety goggles.
Do not use grinding wheels that have a max RPM less than the marked RPM rating on the tool.
Keep hands clear from grinding wheel during use.
Electric shock hazard. Do not expose to rain or use in damp locations.
Do not use for wet grinding.
Do not use wheel if cracked or chipped.
Disconnect tools before servicing; when changing accessories, such as blades, bits, cutters, and
the like.

Page 10 of 18
Direction of feed. Feed work into a blade or cutter against the direction of rotation of the blade or
cutter only.
FOR GRINDING DISC
Do not exceed rated speed.
Always wear the proper personal protective equipment including eyewear, ear protection, and
facemasks.
Do not use if wheel is damaged.
Do not overtighten mounting nut.
Always ensure the appropriate guards are installed.
Store out of reach of children.
1. Unplug the sharpener.
2. Refer to the saw chain’s instructions to determine the sharpening angle.
3. With the angled cutting edges facing right, place the saw chain in the vise, engaging the chain on
the spokes of the chain wheels.
4. Squeeze the vise handle to test clamping tension. Adjust the clamp lock nut until the saw chain
does not move while being clamped.
5. Sharpening the right-hand cutters:
a. Loosen the angle adjustment knob, align the angle arrow to the correct angle to the left of 0
on the miter gauge, and then tighten the angle adjustment knob (Figure E).
b. Turn the chain roller until the first right-hand cutter is in position. Then, engage the chain stop
to keep the chain saw from moving.
c. Pull down on the handle to bring the grinding wheel into the gullet, and then make adjustments:
Turn the chain stop adjustment knob until the grinding wheel just grazes the cutting
edge. Tighten the chain stop lock nut.
Turn the depth adjustment knob until the grinding wheel is just above the bottom of the
gullet. Tighten the depth adjustment lock nut.

Page 11 of 18
d. Plug in the sharpener and turn it on.
e. Allow the sharpener to come up to full speed.
f. Squeeze the vise handle and pull down on the handle until the grinding wheel makes contact
with and sharpens the cutting edge.
g. Turn the chain roller until the next cutter is in position. Turn the sharpener on and sharpen the
cutter.
h. Continue until all of the cutters have been sharpened.
i. Turn off the sharpener and unplug it.
6. Sharpening the left-hand cutters (leave the chain in the vise):
a. Loosen the angle adjustment knob, align the angle arrow to the correct angle to the right of 0 on
the miter gauge, and then tighten the angle adjustment knob.
b. Turn the chain roller until the first left-hand cutter is in position. Then, engage the chain stop.
c. Follow instructions for 5. Sharpen the right-hand cutters: beginning at c. and ending at i.
7. Clean and oil the chain before reinstalling it on the chainsaw.
8. To prevent accidents, turn off the tool and unplug the tool from its electrical outlet after use. Clean
and then store the tool indoors out of children’s reach.
Replace the Grinding Wheel
1. Remove grinding wheel cover.
2. Remove the outer flange by turning it counterclockwise, and then remove the grinding wheel.

Page 12 of 18
3. Place the grinding wheel on the arbor, then thread the outer flange onto the spindle. Wrench tighten
only enough so that the wheel is securely held on the spindle.
4. Replace the grinding wheel cover.
After Each Use
Wipe external surfaces of the tool with a clean cloth.
Periodically, wear ANSIZ87.1 compliant eye protection and NIOSH compliant breathing protection
and blow dust and grit out of the motor vents using dry compressed air.
Replace the grinding wheel once it has worn down to a diameter of 3".
Maintenance
Maintain the product by adopting a program of conscientious repair and maintenance in accordance
with the following recommended procedures. It is recommended that the general condition of any tool
be examined before it is used. Keep your tool in good repair. Keep handles dry, clean, and free from
oil and grease. The following chart is based on a normal operation schedule.
Maintenance Interval
Maintenance Point
Before Use
Inspect the general condition of the tool.
After Use
Wipe external surfaces of the tool with clean cloth.
Replace the grinding wheel once it has worn down to a
diameter of 3”.

Page 13 of 18
Troubleshooting
Use the table below to troubleshoot problems before contacting service personnel or your local
dealer. If the problem continues after troubleshooting, call your local dealer for assistance.
Failure
Possible Cause
Corrective Action
Tool will not start.
Cord not connected.
Check that cord is plugged in.
No power at outlet.
Check power at outlet. If outlet is not
powered, turn off tool and check circuit
breaker. If breaker is tripped, make
sure circuit is right capacity for tool and
circuit has no other loads.
Tool’s thermal reset breaker tripped (if
equipped).
Turn off tool and allow to cool. Press
reset button on tool.
Internal damage or wear (carbon
brushes or bearings, for example).
Have technician service tool.
Tool operates
slowly.
Extension cord too long or wire size too
small.
Eliminate use of extension cord. If an
extension cord is needed, use one with
the proper diameter for its length and
load.
Performance
decreases over
time.
Accessory dull or damaged.
Keep cutting accessories sharp.
Replace as needed.
Carbon brushes worn or damaged.
Have qualified technician replace
brushes.
Excessive noise
or rattling.
Internal damage or wear (carbon
brushes or bearings, for example).
Have technician service tool.
Overheating.
Forcing machine to work too fast.
Allow machine to work at its own rate.
Accessory dull or damaged.
Keep cutting accessories sharp.
Replace as needed.
Blocked motor housing vents.
Wear ANSI-approved safety goggles
and NIOSH-approved dust
mask/respirator while blowing dust out
of motor using compressed air.
Motor being strained by long or small
diameter extension cord.
Eliminate use of extension cord. If an
extension cord is needed, use one
with the proper diameter for its length
and load.

Page 14 of 18
Parts Diagram

Page 15 of 18
Parts List
Reference
Part Description
Quantity
1
Screw
3
2
Grinding Wheel Cover
1
3
Outer Flange
1
4
Grinding Wheel
1
5
Inner Flange
1
6
Screw
11
7
Screw
2
8
Motor Cover
1
9
Nut
2
10
Depth Adjustment Lock Nut
1
11
Depth Adjustment Knob
1
12
Power Switch
1
13
Main Handle
1
14
Vise Handle
1
15
Back Motor Cover
1
16
Anti-Vibration Ring
1
17
Motor
1
18
Power Cord
1
19
Circuit Panel
1
20
Motor Housing
1
21
Screw
2
22
Safety Guard
1
23
Torsion Spring
1
24
Pin
1
25
Circlip
2
26
Base
1
27
Vise Base
1
28
Chain Stop
1
29
Washer
1
30
Screw
4
31
Shaft
1
32
Swing Arm
1
33
Washer
5
34
Torsion Spring
1
35
Nut
1
36
Lock Nut
2
37
Chain Stop Adjustment Knob
1
38
Vise Cable
1
39
Inner Vise Clamp
1
40
Washer
2
41
Chain Wheel
2
42
Outer Vise Clamp
1
43
Chain Roller
2
44
Washer
1
45
Screw
2
46
Spring
2
47
Clamp Plate
1
48
Bolt
1
49
Angle Adjustment Knob
1

Page 16 of 18
Replacement Parts
For replacement parts and technical questions, please call Customer Service at 1-800-222-5381.
Not all product components are available for replacement. The illustrations provided are a
convenient reference to the location and position of parts in the assembly sequence.
When ordering parts, the following information will be required: item description, item model
number, item serial number/item lot date code, and the replacement part reference number.
The distributor reserves the rights to make design changes and improvements to product lines
and manuals without notice.

Page 17 of 18
Limited Warranty
Northern Tool and Equipment Company, Inc. ("We'' or ''Us'') warrants to the original purchaser only
(''You'' or ''Your'') that the Ironton product purchased will be free from material defects in both
materials and workmanship, normal wear and tear excepted, for a period of 90 days from date of
purchase. The foregoing warranty is valid only if the installation and use of the product is strictly in
accordance with product instructions. There are no other warranties, express or implied, including the
warranty of merchantability or fitness for a particular purpose. If the product does not comply with this
limited warranty, Your sole and exclusive remedy is that We will, at our sole option and within a
commercially reasonable time, either replace the product or product component without charge to You
or refund the purchase price (less shipping). This limited warranty is not transferable.
Limitations on the Warranty
This limited warranty does not cover: (a) normal wear and tear; (b) damage through abuse, neglect,
misuse, or as a result of any accident or in any other manner; (c) damage from misapplication,
overloading, or improper installation; (d) improper maintenance and repair; and (e) product alteration
in any manner by anyone other than Us, with the sole exception of alterations made pursuant to
product instructions and in a workmanlike manner.
Obligations of Purchaser
You must retain Your product purchase receipt to verify date of purchase and that You are the original
purchaser. To make a warranty claim, contact Us at 1-800-222-5381, identify the product by make
and model number, and follow the claim instructions that will be provided. The product and the
purchase receipt must be provided to Us in order to process Your warranty claim. Any returned
product that is replaced or refunded by Us becomes our property. You will be responsible for return
shipping costs or costs related to Your return visit to a retail store.
Remedy Limits
Product replacement or a refund of the purchase price is Your sole remedy under this limited warranty
or any other warranty related to the product. We shall not be liable for: service or labor charges or
damage to Your property incurred in removing or replacing the product; any damages, including,
without limitation, damages to tangible personal property or personal injury, related to Your improper
use, installation, or maintenance of the product or product component; or any indirect, incidental or
consequential damages of any kind for any reason.
Assumption of Risk
You acknowledge and agree that any use of the product for any purpose other than the specified
use(s) stated in the product instructions is at Your own risk.
Governing Law
This limited warranty gives You specific legal rights, and You also may have other rights which vary
from state to state. Some states do not allow limitations or exclusions on implied warranties or
incidental or consequential damages, so the above limitations may not apply to You. This limited
warranty is governed by the laws of the State of Minnesota, without regard to rules pertaining to
conflicts of law. The state courts located in Dakota County, Minnesota shall have exclusive jurisdiction
for any disputes relating to this warranty.

Page 18 of 18
Distributed by:
Northern Tool & Equipment Company, Inc.
Burnsville, Minnesota 55306
www.northerntool.com
Made in China.