EarthWise NVPS42108 User manual

OPERATOR’S MANUAL
18 VOLT, CORDLESS CONVERTIBLE 2 IN 1 POLE SAW / CHAIN SAW
This product is covered by U.S. patents and other international patents
Copyright. All Rights Reserved.
NVPS42108
NVPS42110
This product has been engineered and manufactured to our high standard for dependability,
ease of operation, and operator safety. Properly cared for, it will give you years of rugged,
trouble-free performance.
WARNING: To reduce the risk of injury, the user must read and understand the operator’s
manual before using this product.
Thank you for your purchase.
DO NOT RETURN THIS PRODUCT TO THE STORE. OPERATING, ASSEMBLY, PART, SERVICE
QUESTIONS? CALL 1-800-313-5111 BETWEEN 7:30AM-4:30PM EST FOR ASSISTANCE.
SAVE THIS MANUAL FOR FUTURE REFERENCE
BATTERY MUST BE CHARGED BEFORE FIRST USE.

TO REDUCE RISK OF INJURY:
Before any use, be sure everyone using this tool reads
and understands all safety instructions and other information
contained in this manual.
CAUTION: Wear appropriate personal hearing protection
during use. Under some conditions and duration of use,
noise from this product may contribute to hearing loss.
Save these instructions and review frequently prior to use and
in instructing others.
WARNING: When using electric gardening appliances, basic
safety precautions should always be followed to reduce risk of
fire, electric shock, and personal injury.
READ ALL INSTRUCTIONS
GENERAL SAFETY
IMPORTANT SAFETY WARNINGS
2
AVOID DANGEROUS ENVIRONMENTS – Don’t use saw in
rain, damp or wet locations. Do not operate Saw in gaseous or
explosive atmospheres. Motors in these tools may spark, and
the sparks might ignite fumes.
DRESS PROPERLY – Don’t wear loose clothing or jewelry.
Wear protective hair covering to contain long hair. They
can be caught in moving parts. Use of rubber gloves and
substantial footwear is recommended when working outdoors.
USE SAFETY GLASSES –Wear safety glasses with side
shields or goggles that are marked to comply with ANSI Z87.1
standard when operating this product. Use face or dust mask
if environment is dusty.
DANGER: Risk of cut. Keep hands away from chain. Keep
both hands on pole and/or handles when power is on.
USE RIGHT TOOL – Do not use tool for any job except that
for which it is intended.
USE HEAD AND FACE PROTECTION: Wear a safety hard
hat with a full face shield that meets the ANSI Standards ANSI
Z89.1, or CE Standards while operating the saw.
CAUTION: Never stand under the limb being trimmed.
Position yourself out of the way of falling debris.
DISCONNECT battery from saw when not in use or when
servicing or cleaning. Do not leave unattended.
AVOID UNINTENTIONAL STARTING—Don’t carry the saw
with finger on switch, Be sure the switch is off when installing
battery pack.
CAUTION: Never carry pole saw with one hand, Doing so
could cause saw to become unbalanced and damage may
occur. Failure to heed this warning can result in serious
personal injury.
KEEP CHILDREN AWAY: All visitors, children and pets
should stay at a safe distance from the work area. Never
allow children to operate the saw.
STORE IDLE SAW INDOORS: When not in use, the saw
should be stored indoors in a dry and high or locked place,
out of reach of children.
DO NOT ATTEMPT to remove cut material or hold material
to be cut when saw is on and the chain is moving. Make sure
switch is off when clearing jammed material from the chain,
Do not grasp the exposed cutting edges when picking up or
holding the saw.
CAUTION: Chain coasts after turned off.
WARNING: To protect yourself from electrocution, maintain
a min. distance of 50ft (15m) from all electrical lines.
DON’T FORCE SAW—It will do the job better and with
less likelihood of a risk of injury at the rate for which it was
designed.
STAY ALERT: Watch what you are doing, Use common
sense. Do not operate saw when you are tired or under the
influence of medications, drugs or alcohol.
DANGER: If chain jams on any electrical cord or line.
DO NOT TOUCH THE BAR AND CHAIN! THEY CAN
BECOME ELECTRICALLY LIVE AND VERY DANGEROUS.
Release the unit in the safest manner possible. Disconnect
the damaged electrical cord or line from the power source. If
possible, do so safely. If in doubt, call an electrician or the
electrical contractor for assistance, Failure to heed this danger
will result in serious personal injury and possible death.
LIGHTING: Only operate saw in daylight or good artificial light.
DON’T OVERREACH: Keep proper footing and balance at all
times.
Make sure battery is removed before clearing jammed
material from chain.
CHECK DAMAGED PARTS: Before further use of the
saw, any 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
condition that may affect its operation. Any part that is
damaged should be properly repaired or replaced. Call our
customer service help line at 1-800-313-5111 for assistance.
Always wear ear plugs or mufflers to protect your hearing.
Frequent users should have hearing checked regularly as
chain saw noise can damage hearing.
MAINTAIN SAW WITH CARE—Keep cutters sharp and clean
for best performance and to reduce the risk of injury. Keep
pole and handle dry, clean, and free from oil and grease.
WARNING: The batteries in this product may contain one
or more of the following chemicals known to the State of
California to cause cancer and birth defects or other
reproductive harm: lead, nickel, cadmium, lithium, cobalt.
Wash hands after handling.
WARNING: Some dust and debris created by the use of this
tool could contain chemicals known to the State of California
to cause cancer and birth defects or other reproductive harm.
Some examples of these chemicals are:
 Chemicals in fertilizers
 Chemicals in insecticides, herbicides and pesticides.
 Arsenic and chromium from chemically treated lumber.
Your risk from exposure to these chemicals varies,
depending on how often you do this type of work. To
reduce your exposure, work in a well-ventilated area and
with approved safety equipment, such as dust masks that
are specially designed to filter out microscopic particles.
WARNING: The electrical cords on this product may contain
chemicals known to the State of California to cause cancer
and birth defects or other reproductive harm. Wash hands
after handling.

UNPACKING
This product requires assembly.
Carefully remove the product and any accessories from the
box. Make sure that all items listed in the packing list are
included.
Inspect the product carefully to make sure no breakage or
damage occurred during shipping.
Do not discard the packaging material until you have carefully
inspected and satisfactorily operated the product.
PACKING LIST
 Chain saw
 Bar and Chain
 Telescoping pole
 Instruction manual
 Blade cover
 Battery pack and charger
 Combination wrench/screwdriver
WARNING: If any parts are damaged or missing, do not
operate this product until the parts are replaced, Failure to
heed this warning could result in serious personal injury. Call
1-800-313-5111 for assistance.
Pole Assembly:
Remove rubber caps from the upper and lower pole sections.
Hold the two sections of the pole as shown with the arrows
facing up. Insert the upper pole section until you hear the
sections click together. Make sure the two sections are se-
curely assembled by stretching the pole out and drawing it
back several times.
CONVERTING FROM CHAIN SAW TO POLE SAW
Pull the release latch located on the handle assembly
backwards in the direction of the handle. (see Fig 1) Slide
the handle downwards. (Fig 2)
Connect the handle to the rear of the telescopic pole and
the cutting head to the front end of the pole.
Make sure the release latch snaps in to lock the parts
securely.
CONVERTING FROM POLE SAW TO CHAIN SAW
The electric chainsaw is a separate operating unit when not
assembled to the telescopic pole.
Disconnect handle and cutting head from ends of telescopic
pole as per the instructions provided.
Connect the handle directly to the cutting head by aligning the
grooves and pulling upward. The release latch must snap in
firmly and securely, locking the parts together.
ADJUSTING LENGTH OF TELESCOPIC POLE
To adjust the length of the telescopic pole, first remove the
battery pack from the saw. Rotate the collar counterclockwise
to loosen. Push poles toward each other to shorten the pole or
pull away from each other to lengthen the pole.
NOTE: Only extend the pole to minimum length required to
reach the limb to be cut.
Lock the pole in position by turning the collar clockwise until
firmly hand tight. Do not use wrench or pliers to over tighten
the collar. Damage to collar and/or pole may result.
WARNING: Failure to lock telescopic pole collars as directed
could result in personal injury,
WARNING: Do Not attempt to use the pole saw at a length
which does not allow you to maintain proper footing and
balance at all times.
ASSEMBLY
3

DANGER: Never start the motor before installing the guide
bar, chain, chain cover. Without all these parts in place, the
clutch can fly off or explode, exposing the user to possible
serious injury.
WARNING: To avoid serious personal injury, read and
understand all the safety instructions provided.
WARNING: Before performing any maintenance, make sure
the battery pack is removed from the tool. Failure to heed this
warning could result in serious personal injury.
CAUTION: Always wear gloves when handling the bar and
chain. These components are sharp and may contain burrs.
WARNING: Never touch or adjust the chain while the motor is
running. The saw chain is very sharp; always wear protective
gloves when performing maintenance to the chain to avoid
possible serious lacerations.
NOTE: When replacing the guide bar and chain, use only
identical replacement parts.
1. Make sure battery is removed from the saw.
2. Loosen the guide bar screw. (1)
3. Remove the chain cover. (2)
4. If installing bar and chain for the first time, skip to #6. If
replacing, remove the old bar and chain from the mounting
surface. (3)
5. Remove the old chain from the bar.
6. Lay out the new saw chain in a loop and straighten any
kinks. The cutters should face in the direction of the chain
rotation. If they face backwards, turn the loop over. (4)
7. Place the chain drive links into the bar groove.
NOTE: Make certain of the direction of chain.
8. Position the chain so there is a loop at the back of the bar.
(5)
9. Hold the chain in position on the bar and place the loop
around the sprocket.
10. Fit the bar flush against the mounting surface so that the
bar studs are in the long slot of the bar. (6)
NOTE: When placing the bar on the bar studs, ensure that
the adjusting pin is in the chain tension pin hole.
11. Tighten the chain tensioner. (7)
12. Replace the chain cover.
13. Tighten the guide bar screw but leave the bar free to move
for tension adjustment. (8)
14. Remove all slack from the chain by turning the chain
tensioner clockwise until the chain seats snugly against
the bar with the drive links in the bar groove. (9)
15. Tighten the guide bar screw. (10)
The chain is correctly tensioned when there is no sag on the
underside of the guide bar, the chain is snug, but it can be
turned by hand without binding..
NOTE: If chain is too tight, it will not rotate. Loosen the
guide bar screw slightly and turn the chain tensioner 1/4 turn
counterclockwise. Lift the tip of the guide bar up and retighten
the guide bar screw. Ensure that the chain will rotate without
binding,
NOTE: A new chain tends to stretch, check chain tension
frequently and tension as required.
INSTALLING/REPLACING THE GUIDE BAR AND CHAIN
4

5
INSTALLING/REPLACING THE GUIDE BAR AND CHAIN

CHAIN TENSION
Stop the engine before setting the chain tension. Make sure the
guide bar screw is loosened to finger tight. Turn the chain tensioner
clockwise to tension the chain. A cold chain will be correctly tensioned
when there is no slack on the underside of the guide bar, the chain is
snug, but it can be turned by hand without binding.
Chain must be re-tensioned whenever the flats on the drive links hang
out of the bar groove.
During normal saw operation, the temperature of the chain will
increase. The drive links of a correctly tensioned warm chain will hang
approximately .050 in. (1.25mm) out of the bar groove. Be aware that
chain tensioned while warm, may be too tight upon cooling. Check the
“cold tension” before next use.
NOTE: A new chain tends to stretch. Check chain tension frequently
and tension as required.
CHAIN MAINTENANCE
CAUTION: Remove the battery pack and make sure the chain has
stopped before you do any work on the saw.
For smooth and fast cutting, chain needs to be maintained properly.
The chain requires sharpening when the wood chips are small and
powdery, the chain must be forced through the wood during cutting,
or the chain cuts to one side. During maintenance of your chain
remember:
 Improper filing angle of the side plate can increase the risk of
severe kickback.
 Raker (depth gauge) clearance.
- Too low increases the potential for kickback.
- Not low enough decreases cutting ability.
 If cutter teeth have hit hard objects such as nails and stones, or
have been abraded by mud or sand on the wood, have service
dealer sharpen chain.
NOTE: Inspect the drive sprocket for wear or damage when
replacing the chain. If signs of wear or damage are present in
the areas indicated, have the drive sprocket replaced by a qualified
individual.
HOW TO SHARPEN THE CUTTERS
Be careful to file all cutters to the specified angles and to the
same length, as fast cutting can be obtained only when all cutters
are uniform.
Wear gloves for protection. Properly tension the chain prior to
sharpening. Refer to “Chain Tension Section” earlier in this manual.
Do all of your filing at the midpoint of the bar.
Use a 5/32 in. diameter round file and holder.
Keep the file level with the top plate of the tooth. Do not let the file dip
or rock. Using light but firm pressure, stroke towards the front corner
of the tooth.
Lift file away from the steel on each return stroke.
Put a few firm strokes on every tooth. File all left hand cutters in one
direction. Then move to the other side and file the right hand cutters in
the opposite direction. Occasionally remove filing from the file with a
wire brush.
WARNING: Improper chain sharpening increases the potential of
kickback.
WARNING: Failure to replace or repair damaged chain can cause
serious injury.
WARNING: The saw chain is very sharp, always wear protective
gloves when performing maintenance to the chain.
TOP PLATE FILING ANGLE
Correct 30 degrees – File holders are marked with guide marks to
align file properly to produce top plate angle.
Less than 30 degrees – for
cross cutting.
More than 30 degrees –
feathered edge dulls quickly.
SIDE PLATE ANGLE
Correct – 80 degrees produced automatically if correct diameter file is
used in file holder.
Hook – “Grabs” and dulls quickly. Increases potential of kickback.
Results from using a file with a diameter too small, or file held to low.
Backward Slope – Needs too
much feed pressure, causes
excessive wear to bar and chain.
Results from using a file with a
diameter too large, or file held too
high.
DEPTH GAUGE CLEARANCE
The depth gauge should be maintained at a clearance of .025 in.
(0.6 mm). Use a depth gauge tool for checking the depth gauge
clearances.
Every time the chain is filed, check the depth gauge clearance
Use a flat file and a depth gauge
jointer to lower all gauges uniformly.
Depth gauge jointers are available
in .020 in. to .035 in. (0.5 mm to 0.9
mm). Use a .025 in. (0.6 mm) depth
gauge jointer. After lowering each
depth gauge, restore original shape
by rounding the front. Be careful not
to damage adjoining drive links with
the edge of the file.
Depth gauges must be adjusted with
the flat file in the same direction the
adjoining cutter was filed with the
round file. Use care not to contact
cutter face with flat file when adjusting
depth gauges.
Approx. .050 (1.25mm)
6
CHAIN TENSION AND MAINTENANCE

OPERATING
Before you start the unit make sure the chain and bar are not
contacting any object.
TO TURN THE TOOL ON
Push the lock button in with your thumb and then squeeze the
trigger with your fingers. (Once the tool is running, you can
release the lock button). To turn the tool OFF, release the
trigger.
DO NOT PULL the trigger until you are ready to make a cut.
WARNING: To guard against injury, observe the following:
Read instruction manual before using, save instruction
manual. Keep hands away from chain. Keep hands on
handles. Don’t overreach.
A good, firm grip on the pole and/or handles with both hands
will help you maintain control. When using the chain saw,
place your right hand on the rear handle and your left hand
on the front handle with your thumbs and fingers encircling
the chain saw handles. A firm grip together with a stiff left
arm will help you maintain control of the saw if kickback
occurs. When using as a pole saw, place one hand on the
pole and your other hand on the molded handle with your
thumbs and fingers encircling the pole and handle. A firm
grip together with positioning handle against your body will
help you maintain control of the saw. Don’t let go.
WARNING: Do not operate saw in a tree, on a ladder, or on a
scaffold; tis is extremely dangerous.
CAUTION: Chain coasts after turned off.
Do not use under wet conditions.
Use extreme caution when cutting small size brush, saplings
or limbs under tension, because slender and tense material
may catch the saw and be whipped toward you, pull you off
balance or spring back.
Do not use saw to cut vines and/or small underbrush.
WARNING: Do not allow familiarity with this type of tool to
make you careless. Remember that a careless fraction of a
second is sufficient to inflict serious injury.
WARNING: Do not cut trees near electrical wires or buildings.
CAUTION: Failure to lubricate the chain will cause damage to
the bar and chain. Use only a good quality bar and chain oil
or, if not available, unused SAE 30 weight motor oil may be
substituted. One minute of use will consume approx. 0.15 fl.
oz. (5ml) of oil.
NOTE: It is normal for oil to seep from the saw when not in
use. To prevent seepage, empty the oil tank after each use.
When storing the unit for a long period of time ( 3 months or
longer) be sure the chain is lightly lubricated; this will prevent
rust on the chain and bar sprocket.
WARNING: Do Not use the chain saw with any type of
accessory or attachment. Such usage might be hazardous.
WARNING: Kickback may occur when the moving chain
contacts an object at the upper portion of the tip of the guide
bar or when the wood closes in and pinches the chain saw in
the cut. Contact at the upper portion of the tip of the guide bar
can cause the chain to dig into the object and stop the chain
for an instant. The result is a lightening fast, reverse reaction
which kicks the guide bar up and back toward the operator. If
the chain saw is pinched along the top of the guide bar, the
guide bar can be driven rapidly back toward the operator.
Either of these reactions can cause loss of saw control which
can result in serious injury. Do
not rely exclusively upon the
safety devices built into the
saw. As a chain saw user,
you should take several steps
to keep your cutting jobs free
from accident or injury.
7
LOCK
BUTTON
TRIGGER
SWITCH

OPERATING INSTRUCTIONS
FELLING A TREE
When bucking and felling operations are being performed by two
or more persons, at the same time, the felling operation should be
separated from the bucking operation by a distance of at least twice
the height of the tree being felled. Trees should not be felled in a
manner that would endanger any person, strike any utility line or
cause any property damage. If the tree does make contact with any
utility line, the utility company should be notified immediately.
WARNING: Check the tree for damaged or dead branches that could
fall and hit you during felling.
Before any cuts are started, pick your escape route (or routes in case
the intended route is blocked); clear the immediate area around the
tree and make sure there are no obstructions in your planned path
of retreat. A clear path of safe retreat is approximately 135 degrees
from planned line of fall. The retreat path should extend back and
diagonally to the rear of the expected line of fall.
Before felling is started, consider the force and direction of the wind,
the lean and balance of the tree, and the location of large limbs.
These things influence the direction in which the tree will fall. Do not
try to fell a tree along a line different from its natural line of fall.
The chain saw operator should keep on the uphill side of the terrain
as the tree is likely to roll or slide downhill after it is felled.
Remove dirt, stones, loose bark, nails, staples, and wire from the tree
where felling cuts are to be made.
NOTCHED UNDERCUT – Cut a notch about 1/3 diameter of the tree,
perpendicular to the direction of the fall. Make the cuts of the notch so
they intersect at a right angle to the line of fall. This notch should be
cleaned out to leave a straight line. To keep the weight of the wood off
the saw, always make the lower cut of the notch before the upper cut.
WARNING: Do not fell trees during periods of high wind or heavy
precipitation. Wait to do your cutting until the hazard has ended.
WARNING: Do not cut down trees having an extreme lean or large
trees that have rotten limbs, loose bark, or hollow trunks. Have these
trees pushed or dragged down with heavy equipment, then cut them
up.
FELLING BACK-CUT
The back-cut is always made level and horizontal, and at a minimum
of 2 inches (5cm) above the horizontal cut of the notch.
Never cut through to the notch. Always leave a band of wood between
the notch and back-cut (approximately 2 inches (5cm) or 1/10 the
diameter of the tree). This is called “hinge” or “hinge wood.” It controls
the fall of the tree and prevents slipping or twisting or shoot-back of
the tree off the stump.
This saw is not designed to fell large diameter tree tops, or tree
trunks.
The following precautions should be followed to minimize
kickback:
1. Always grip the pole and/or handles firmly with both hands
when unit is running. When using the chain saw, place your
right hand on the rear handle and your left hand on the front
handle with your thumbs and fingers encircling the chain saw
handles. When using as a pole saw, place one hand on the pole
and your other hand on the molded handle with your thumbs
and fingers encircling the pole and handle. A firm grip together
with positioning handle against your body will help you maintain
control of the saw if kickback occurs.
2. Make sure that the area in which you are cutting is free from
obstructions. Do not let the nose of the guide bar contact a log,
branch, fence or any other obstruction that could be hit while you
are operating the saw.
3. Always cut with the unit running at full speed. Fully squeeze the
throttle trigger and maintain a steady cutting speed.
4. Wear non-slip gloves for maximum grip and protection.
Proper Cutting Stance
Weight should be balanced with both feet on solid ground.
Keep left arm with elbow locked in a “straight arm” position to
withstand any kickback force. Your right hand should be gripping the
handle and positioned firmly against your body for added support.
Your body should always be to the left of the chain line.
BASIC CUTTING PROCEDURE
Do not use the pole saw to fell saplings. Use the chain saw
without the pole attachment,
Small trees up to 6-7 inches in diameter are usually cut in a single cut.
Large tree limbs require notch cuts. Notch cuts determine the direction
the tree will fall.
WARNING: If the tree limb starts to fall in the wrong direction, or if
the saw gets caught or hung up during the fall, leave the saw and
save yourself.
WARNING: Periodically glance at the top of the tree during the
back-cut to assure the tree limb is going to fall in the desired direction.
Practice cutting a few small limbs using the following technique to get
the “feel” of using the saw before you begin a major sawing operation.
Take the proper stance in front of the wood with the saw in the “off”
position.
Squeeze the trigger and let the chain accelerate to full speed before
entering the cut.
Always hold the saw firmly with both hands.
Keep the unit running the entire time you are cutting, maintain a
steady speed.
Allow the chain to cut for you; exert only light downward pressure. If
you force the cut, damage to the bar, chain, or unit can result.
Do not put pressure on the saw at the end of the cut.
When felling the top of a small tree, keep everyone a safe distance
from the cutting area, During felling operations, the safe distance
should be at least twice the height of the largest trees in the felling
area. If the tree makes contact with any utility line, the utility company
should be notified immediately.
Always cut with both feet on solid ground to prevent being pulled or
knocked off balance.
Do not extend arms above shoulder level when operating the
pole saw.
Do not cut above chest height when using the chain saw.
8

OPERATING
CUTTING INSTRUCTIONS
LIMBING
Limbing is removing branches from a fallen tree.
Work slowly, keeping both hands on pole saw with a firm grip.
Always make sure your footing is secure and your weight is
distributed evenly on both feet.
Leave the larger support limbs under the tree to keep the tree
off the ground while cutting.
Limbs should be cut one at a time. Remove the cut limbs from
the work area often to help keep the work area clean and
safe.
Branches under tension should be cut from the bottom up to
avoid binding the pole saw.
Keep the tree between you and the pole saw while limbing.
Cut from the side of the tree opposite the branch you are
cutting.
WARNING: Never climb into a tree to limb or prune. Do not
stand on ladders, platforms, a log, or in any position which can
cause you to lose your balance or control of the saw.
LIMBING PRUNING
PRUNING
This unit is designed for trimming
small branches and limbs up to 6”
diameter.
Pruning is trimming limbs from a live tree.
Work slowly, keeping both hands on the saw with a firm grip.
Always make sure your footing is secure and your weight is
distributed evenly on both feet.
When pruning trees it is important not to make the finishing
cut next to the main limb or trunk until you have cut off the
limb further out to reduce the weight. This prevents stripping
the bark from the main member.
Make first cut six inches from tree trunk on underside of
limb. Use top of guide bar to make this cut. (Cut 1/3 through
diameter of limb.)
Move two to four inches farther out on limb. Make second cut
from above limb. Continue cut until you cut limb off.
Make third cut as close to tree trunk as possible on underside
of limb stub. Use top of guide bar to make this cut. Cut 1/3
through diameter of stub.
Make fourth cut directly above third cut. Cut down to meet
third cut. This will remove limb stub.
SPRINGPOLES
A springpole is a branch or sapling which is bent under
tension by other wood so that it springs back if the wood
holding it is cut or removed.
WARNING: Watch out for springpoles. They are dangerous.
They could result in severe or fatal injury.
As the tree limb starts to fall, stop the saw and immediately
retreat along the cleared path. Watch the action in case
something falls your way. Be alert for overhead limbs or
branches that may fall and watch your footing.
WARNING: Never cut through to the notch when making
a back-cut. The hinge controls the fall of the tree, this is a
section of wood between the notch and back-cut.
BUCKING
Bucking is the term used for cutting a fallen tree to the desired
log length.
Always make sure your footing is secure and your weight is
distributed evenly on both feet.
Cut only one log at a time. Support small logs on a saw horse
or another log while bucking.
Keep a clear cutting area. Make sure that no objects can
contact the guide bar nose and chain during cutting, this
can cause kickback.
When bucking on a slope, always stand on the uphill side
of the log. To maintain complete control of the chain saw
when cutting through the log, release the cutting pressure
near the end of the cut without relaxing your grip on the chain
saw handles. Do not let the chain contact the ground. After
completing the cut, wait for the saw chain to stop before you
move the chain saw. Always stop the motor before moving
from tree to tree.
BUCKING LOGS UNDER STRESS
When the log is supported along its entire length, it should be
cut from the top or over-bucking.
When the log is supported on one end, cut 1/3 diameter from
the underside or under-bucking. Then make the finishing cut
by over-bucking to meet the first cut.
As the log is being cut, it will tend to bend. The saw can
become pinched or hung in the log if you make the first cut
deeper than 1/3 of the diameter of the log.
Give special attention to logs under stress to prevent the bar
and chain from pinching.
OVERBUCKING – Begin on the top side of the log with
the bottom of the saw against the log; exert light pressure
downward. Note that the saw will tend to pull away from you.
UNDER-BUCKING – Begin on the under side of the log with
the top of the saw against the log; exert light pressure upward.
During under-bucking, the saw will tend to push back at you.
Be prepared for this reaction and hold the saw firmly to
maintain control.
9

CHARGING THE BATTERY PACK
When fully charged, the battery can be safety stored in
temperatures down to –40 degrees F for a period of up to two
weeks, before requiring charging. Fully charge battery pack
every 30 days.
If over a period of time the battery pack quickly runs down
after a full 5-6 hour charging period, a replacement battery
pack is needed.
To prevent permanent damage to the battery, never store in a
discharged condition.
WINTER STORAGE—Fully recharge for the 5-6 hours before
storage and then again every 3-4 months.
Since the battery will not develop a memory, it does not have
to be fully discharged before recharging.
A small leakage of liquid from the battery cells may occur
under extreme usage, charging or temperature conditions.
This does not indicate a failure. However, if the outer seal is
broken and this leakage gets on your skin:
a. Wash quickly with soap and water.
b. Neutralize with a mild acid such as lemon juice or vinegar.
c. If the battery liquid gets in your eyes, flush them with
clean water for a minimum of 10 minutes and seek
immediate medical attention.
The 18 volt battery supplied is sealed, maintenance free and
spill free.
Charge the battery pack only with the charger provided.
Allow at least 5-6 hours of charge time before initial use of the
saw.
Make sure the power supply is normal household voltage,
120volts, 60Hz, AC only.
The battery charger should be operated in temperatures
between 23 and 104 degrees F.
The battery should be charged in a cool, dry place.
2 to 3 initial charging/discharging cycles may be required to
achieve maximum run time/capacity.
Do not attempt to open the charger or the unit. There are no
customer serviceable parts inside.
DO NOT incinerate battery packs even if they are severely
damaged or completely worn out. They can explode in a fire
causing injury.
Use the battery charger indoors only.
Disconnect charger from the power supply when not in use to
prevent damage to the charger during a power surge.
TO CHARGE
Plug the charger into a standard household electrical outlet.
Place battery pack in charger. When properly connected, the
red charger indicator light (LED) will glow.
NOTE: The charger indicator light will glow red continuously
while charging, then when fully charged will glow green.
RECHARGING
Recharge the battery as soon as the cutting power of your
saw is no longer effective.
Avoid running the battery into full discharge (draining the
battery completely).
Follow the procedure outlined.
Recharging the battery pack according to these instructions
should ensure maximum battery life.
TO INSTALL BATTERY PACK
Place the battery pack in your pole saw (see diagram). Ensure
the latches on each side of the battery pack snap in place and
battery pack is securely connected to the saw.
TO REMOVE THE BATTERY PACK
Press both latches on side of battery pack to release battery
from the saw (see diagram).
BATTERY DISPOSAL
Remove the battery pack from the pole saw. Cover the terminals with heavy duty adhesive tape. Do not attempt to destroy or disassemble battery pack
or remove any components. This product contains nickel-cadmium batteries which must be recycled or disposed of properly. Local, state or federal
laws may prohibit disposal of these batteries in ordinary trash.
The RBRC seal on the nickel-cadmium battery pack indicates that the costs to recycle the battery pack at the end of its useful life
has already been paid by The Great States Corporation/American Lawn Mower Company. It is illegal to place spent ni-cad batteries
in the local municipal solid waste or in the trash. RBRC in cooperation with The Great States Corporation/American Lawn Mower
Company has provided an environmentally friendly and easy way to recycle spent ni-cad batteries. Just contact your local recycling
center or call 1-800-8BATTERY for information on where to drop off the spent battery.
10

11
MAINTENANCE
BEFORE USING: Fill oil well with new quality bar and chain
oil. Unused SAE 30 weight motor oil may be substituted.
If you drop the saw, carefully inspect it for damage. If the
blade is bent, housing cracked, or handles broken or if you
see any other condition that may affect the saw’s operation,
call our customer service help line at 1-800-313-5111 for
assistance.
Remove the battery pack from the pole saw, then use only
mild soap and a damp cloth to clean the tool. Never let any
liquid get inside the tool; never immerse any part of the tool
into a liquid.
After cleaning, apply a light coat of oil to the chain and guide
bar to prevent rusting.
IMPORTANT: To assure product SAFETY and RELIABILITY,
repairs, maintenance and adjustment should be performed by
a qualified individual always using identical replacement
parts.
CAUTION: Do not at any time let brake fluids, gasoline,
petroleum based products, penetrating oils, etc., come in
contact with plastic parts. They contain chemicals that can
damage, weaken or destroy plastic.
Ensure that the plastic bar cover is in place when storing.
Fertilizers and other garden chemicals contain agents which
greatly accelerate the corrosion of metals. Do not store the
tool on or adjacent to fertilizers or chemicals.
For smooth and fast cutting, chain needs to be maintained
properly. The chain requires sharpening when the wood chips
are small and powdery, the chain must be forced through the
wood during cutting, or the chain cuts to one side. Refer to
instructions earlier in this manual for instructions on properly
sharpening the chain.
TROUBLESHOOTING
- Bar and chain running hot and
smoking
- Check tension for over-tight condition
- Chain oil tank empty
- Chain installed backwards
- Adjust chain tension
- Fill tank with chain oil
- Reverse chain so that cutters face the right direction
Call us first with questions about operating or maintaining your chain
saw at 1.800.313.5111 between 7:30 a.m. – 4:30 p.m. Eastern
Standard Time, or send emails to earthwis[email protected]m.
CALL US FIRST !!
- Chain tension too tight
- Check guide bar and chain for damage
- Motor runs but chain is not rotating - Adjust chain tension
- Replace damaged bar and chain with identical replacement
parts.
LUBRICATION SYSTEM
The chain is automatically lubricated.
Use only new bar and chain oil or unused SAE 30 weight
motor oil may be substituted. Never use wasted oil, low
quality oil, or insufficient oil. This could damage the pump, the
bar and the chain which may result in serious personal injury.
Check oil level before each work session, refill if less than 1/4
full.
If the lubrication system does not work properly, check the oil
filter and that all oil-ways are clean and free from obstructions.
If it is still not working, call our customer service help line at
1-800-313-5111 for assistance.
GUIDE BAR MAINTENANCE
When the guide bar shows signs of wear, reverse it on the
saw to distribute the wear for maximum bar life. The bar
should be cleaned every day of use and checked for wear and
damage.
Feathering or burring of the bar rails is a normal process of
bar wear. Such faults should be smoothed with a file as soon
as they occur.
A bar with any of the following faults should be replaced:
- Wear inside the bar rails which permits the chain to lay
over sideways.
- Bent guide bar
- Cracked or broken rails
- Spread rails
In addition, guide bars with a sprocket at their tip must be
lubricated weekly with a grease syringe to extend the guide
bar life. Using a grease syringe, lubricate weekly in the
lubricating hole.
Turn the guide bar and check that the lubrication holes and
chain groove are free from impurities.
- Unit does not run - Battery not making contact
- Lock off not fully operated
- Battery not installed properly
- Battery not charged
- Check battery is fully inserted
- Check that lock off is fully pressed prior to moving trigger
- Check battery installation
- Check battery charging requirements
Problem Possible Cause Possible Solution

FEATURES
PRODUCT SPECIFICATIONS
NVPS42108
Input……………..…………………………. 18V, DC Only
Bar Length ……………………………..….8” Oregon Bar
Weight ……………………………………………..8.20 lbs
Total Extended Length……………….……...………..9 ft.
NVPS42110
Input …………………….…………………. 18V, DC Only
Bar Length………………………………..10” Oregon Bar
Weight ……………………………………………...8.4 lbs
Total Extended Length ………………………….9 ft. 2 in.
12
-Telescopic Pole-Automatic Bar and Chain Oiling

The Great States Corporation
American Lawn Mower Company
830 Webster Street
Shelbyville, IN 46176
Phone [phone]
www.americanlawnmower.com
In a continued commitment to improve quality, the Manufacturer reserves the right
to make component changes or design changes when necessary.
WARRANTY
LIMITED WARRANTY FOR CORDLESS ELECTRIC MODELS
This product is manufactured for The Great States Corporation/American Lawn Mower Company. The Great States
Corporation/American Lawn Mower Company, Shelbyville, Indiana, has been making lawn mowers for over 100 years and
it warrants to the original owner that each new product and service part is free from defects in material and workmanship
and agrees to repair or replace under this warranty any defective product or part from the original date of purchase for two
(2) years except for the conditions and circumstances listed below. Proof of purchase (original dated sales receipt) must
accompany all warranty claims.
THIS WARRANTY IS NOT TRANSFERABLE AND DOES NOT COVER:
Products sold damaged or incomplete, sold “as is”,
sold reconditioned, or used as rental equipment.
Delivery, installation, or normal adjustments explained
in the operator’s manual.
Damage or liability caused by shipping, improper
handling, improper installation, incorrect voltage or
improper wiring, improper maintenance, improper
modification, or the use of accessories and/or
attachments not specifically recommended.
Repairs necessary because of operator abuse or negli-
gence, or the failure to install, operate, maintain, or store
the product according to the instructions in the operator’s
manual.
Damage caused by cold, heat, rain, excessive
humidity, corrosive environments and materials, or
other contaminants.
Expendable items that become worn during normal
use including, but not limited to bars and chains.
Cosmetic defects that do not interfere with tool
functionality.
Freight costs from customer to vendor.
Repair and transportation costs of products or parts
determined not to be defective.
ANY INCIDENTAL, INDIRECT, OR CONSEQUENTIAL
LOSS, DAMAGE, OR EXPENSE THAT MAY RESULT
FROM ANY DEFECT, FAILURE, OR MALFUNCTION
OF THE PRODUCT. Some states do not allow the
exclusion or limitation on how long an implied warranty
lasts, so the above limitations may not apply to you.
ANY NON-RESIDENTIAL USE OR COMMERCIAL USE
VOIDS ALL WARRANTIES.
13
Rev. 2012/07/30