Atop Racing cut User manual
Square Ground File Gauge
Sharpening Instructions
Operator’s Manual
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Safety Instructions
WARNING!
Please read the operator’s manual carefully.
The le gauge is designed for sharpening saw
chains. All other use is not recommended.
Always wear protective gloves, and eye protection
when sharpening.
Do not modify the le gauge or use it if it appears to
have been modied by others.
The risk of kickback is increased with a badly
sharpened chain.
The risk of kickback is increased if the depth gauge
setting is too large.
Never allow children to use the le gauge.
Chainsaws can be dangerous. Careless or incor-
rect use can result in serious or fatal injuries to the
operator or others. Never use a chainsaw without
proper training! Read the operator’s manual sup-
plied with the chainsaw before use.
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Introduction
Thank you for choosing Atop Square Ground
File Gauge!
The Atop Square Ground File Gauge is the ulti-
mate tool for sharpening saw chains!
Advantages and Benets
Increased cutting speed
Saved time re-sharpening
Reduced fuel consumption
Reduced vibrations
Reduced kickback
ECO Cutting
A sharp saw chain enables high cutting speed at
70-80% of maximum output, which reduces fuel
consumption.
When to Sharpen?
When the chain no longer self-feeds.
When the saws discharge is dusty.
When the chain looks shiny.
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Preparations
Clean the Chain
Clean the chain from oil, dirt, and debris by cut-
ting in non valuable wood before sharpening.
Make sure that the chain is undamaged.
Secure the Chain and Bar
Make sure the chain is properly tensioned.
Secure the guide bar rmly.
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Preparations
Set the File Gauge
Place the le gauge over the chain with the lock
pin behind a cutter.
Let the guide bar rest against the spacer pins
and tighten the locking screw rmly.
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Preparations
Pull the locking pin to move the chain.
Place the lock pin behind next cutter and release
the locking pin.
- 7 -
Sharpen the Chain
Clean out the Gullet Area
Clean out gullet area using a round le
(4 mm, 1/8”).
A clean gullet area increases the space for the
saw dust to evacuate which contributes to in-
creased cutting speed.
It also opens the area for the at le to move
when sharpening the cutter.
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Sharpen the Chain
Sharpen the Cutter
Let the at le rest against the support rollers at
a 90° angle.
Hold the le with both hands.
File from outside the cutter to inside using full
strokes. By ling from the outside in, the edge of
the cutter becomes stronger which prevents the
edge from cracking.
The le will sharpen the top plate and the side
plate simultaneously. An angle of about 90°
between support rollers and at le gives a top
plate angle of 20-25° and a side plate of 85-90°.
File each cutter, on both the right, and left-hand,
until you’ve removed all signs of damage. Use
approximately 8-10 le strokes on a new chain.
A chain can be re-sharpened about 3-5 times.
90
- 9 -
Depth Gauge Setting
Adjust the Depth Gauge Setting
Check the depth gauge setting after sharpening.
The depth gauge setting should be about
0,4-0,5 mm (0,016”-0,020”).
The depth usually needs to be adjusted after re-
sharpening the chain a few times.
WARNING!
The risk of kickback is increased if the depth
gauge setting is too large.
- 10 -
Accessories
Vallorbe LC2270-7 – Flat File
The Vallorbe LC2270-7 at le is especially devel-
oped for sharpening saw chains.
Racing Kit
The Racing Kit support rollers are designed for
faster cutting performance.
The 13 mm polyamid rollers give a 30° top plate
angle and a 90° side plate angle.
Assembly of New Rollers
Remove the M4 bolts using an allen key. (Use
a hot air gun to loosen the locking varnish if
necessary.)
Clean the threads with a tap, and the screw with
a die if necessary.
Apply new locking varnish on the thread and
tighten the bolts. Be careful not to over tighten.
Make sure that the rollers have free play.
Let the locking varnish dry before use.
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Correct answers 1-Yes; 2-Yes; 3-No; 4-Yes; 5-Yes; 6-No.
Quiz
Test your Memory!
See how well you remember what you have
learned about sharpening saw chains using Atop
Square Ground File Gauge!
1. Is it important to clean the chain before sharpening?
Yes No
2. The chainsaw must be properly secured before sharp-
ening?
Yes No
3. A saw chain can be re-sharpened any number of
times?
Yes No
4. A clean gullet area increases the space for the saw
dust to evacuate and opens area for the at le to move?
Yes No
5. The risk of kickback is increased if the depth gauge
setting is too large?
Yes No
6. A sharp chain increases fuel consumption?
Yes No
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