North American Tool 5466, 52721 Important Operating Instructions

8805466 06/13

38CC CHAINSAW

CALIFORNIA PROPOSITION 65

WARNING: You can create dust
when you cut, sand, drill or grind
materials such as wood, paint,
metal, concrete, cement, or other
masonry. This dust often contains
chemicals known to cause cancer,
birth defects, or other
reproductive harm. Wear
protective gear.

WARNING: This product or its
power cord may contain
chemicals, including lead, known
to the State of California to cause
cancer and birth defects or other
reproductive harm. Wash hands
after handling.

Important!

When using equipment, a few safety
precautions must be observed to
avoid injuries and damage. Please
read the complete operating manual
with due care. Keep this manual in a
safe place, so that the information is
available at all times. If you give the
equipment to any other person, give
them these operating instructions as
well. We accept no liability for
damage or accidents which arise due
to non-observance of these
instructions and the safety
information herein.

SPECIFICATIONS

Engine Displacement: 38 cc

Bar Length*: 14in, 16in, or 18in

*Varies by Model

Maximum Idling Speed:

3400 RPM

Fuel Mixture: 40:1

Anti-Vibration Function

Chain Brake

Auto Chain Lubrication

CAUTION:

FOR YOUR OWN SAFETY READ
INSTRUCTION MANUAL
COMPLETELY AND CAREFULLY
BEFORE OPERATING THIS
CHAINSAW.

Any failures made in following the
safety regulations and and
instructions may result in an
electric shock, fire and/or serious
injury.

SAFETY INSTRUCTIONS

Only allow users who have read
and understand this manual
operate this chainsaw.

Wear protective gear, such as
steel-toed footwear, snugly fitting
clothing, heavy duty gloves, eye
protection (goggles or face
screen), hard hat and ear
protection (ear plugs or mufflers).
Do not wear jewelry and pull long
hair back.

Keep all body parts clear of the
chain while the engine is running.

Do not allow other people or
animals near the saw when it is
running, starting, or being
operated.

You must be mentally alert and in
good physical condition when
operating a chainsaw because the
work is strenuous

Carefully plan your sawing project
before starting. Do not begin until
you are sure the work area is
clean, you have secure footing
and if you are felling trees, that
you have a planned and clear
retreat path.

For Customer Service, please call 1-800-348-5004 or
email [e-mail]

Model: 5466,

52721

1

2

KICKBACK

WARNING: Kickback is the

backward, upward or sudden
movement of the guide bar that
occurs when the guide bar contacts
an object or when the wood closes in
and pinches the saw in the cut. The
saw contacting a foreign object in the
wood can also result in a loss of
control.

Rotational kickback occurs when
the moving chain contacts an object
with the upper tip of the guide bar.
This can cause the chain to dig into
the object, which then stops the
chain for a moment. The result is a
reverse reaction, which kicks the
guide bar up and back towards the
operator.

Pinch kickback occurs when the
woods closes in on the moving chain
along the top of the guide bar. The
sudden stop of the chain results in
the saw to move in the opposite
direction of the rotation and the saw
is driven straight back towards the
operator.

Pull in occurs when the moving
chain comes in contact with a foreign
object in the wood along the bottom
of the guide bar. This sudden stop
pulls the saw forward and away from
the operator and could possibly
cause the operator to lose control of
the saw.

Avoiding Kickback

Be aware of situations or objects that
can cause the material to pinch the
top of or stop the chain.

Do not cut more than one log at a
time.

Do not twist the saw when the bar is
withdrawn from an undercut.

Always begin cutting with the engine
at full speed and with the saw
housing resting against the wood.

Use wedges made of plastic or
wood to hold the cut open. Never
use metal.

Stay alert. Realize kickback can
occur and keep the cutting area free
from foreign objects.

Keep your chain properly tensioned
and sharp, along with properly
maintaining the chainsaw. Failure to
do so can increase the chance of
kickback occurring.

Begin and continue the cut with the
engine running at full speed. Use
caution while re-entering a previous
cut. Do not attempt a plunge cut
(starting a cut with the tip of the
blade).

INSTALLING THE GUIDE BAR
AND SAW CHAIN

WARNING: The saw chain has very

sharp edges. Use thick protective
gloves for safety.

1. Pull the guard towards the front
handle to check that the chain brake
is not engaged.

2. Loosen the nuts and remove the
chain cover.

3. Gear the chain to the sprocket
and, while fitting the saw chain
around the guide bar, mount the
guide bar to the power unit. Adjust
the position of the chain tensioner.

NOTE: Pay attention to the

correct direction of the saw
chain

4. Fit the chain cover to the
power unit and fasten the nuts
to finger tightness.

5. While holding up the tip of
the bar, adjust the chain
tension by turning the tensioner
screw until the tie straps just
touch the bottom side of the
bar rail.

6. Tighten the nuts securely
with the bar tip held up (12 ~
15 Nm). Then check the chain
for smooth rotation and proper
tension while moving it by
hand. If necessary, readjust
with chain cover loose.

7. Tighten the tensioner screw.

NOTE: A new chain will
expand its length in the
beginning of use. Check and
readjust the tension frequently
as a loose chain can easily
derail or cause rapid wear of
itself and the guide bar.

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FUEL AND CHAIN OIL

FUEL

WARNING: Gasoline is very

flammable. Avoid smoking or any
flame or sparks near the fuel. Make
sure to stop the engine and allow it
to cool before refueling the unit.

• Use an anti-oxidant added quality
oil expressly labeled for air-cooled 2­cycle engine

• Do not use BIA or TCW (2-stroke
water-cooling type) mixed oil

Recommended mixing ratio
Gasoline - 40 : Oil - 1

• Exhaust emissions are controlled
by the fundamental engine
parameters and components without
addition of any major hardware or
the introduction of an inert material
during combustion.

• These engines are certified to
operate on unleaded gasoline.

• Make sure to use gasoline with a
minimum octane number of 89RON
(USA/Canada: 87AL).

• If you use a gasoline of a lower
octane value than prescribed. There
is a danger that the engine
temperature may rise and an engine
problems such as piston seizing may
consequently occur.

• Unleaded gasoline is
recommended to reduce the
contamination of the air for the sake
of your health and the environment.

• Poor quality gasoline or oils may
damage sealing rings, fuel lines, or
fuel tank of the engine.

HOW TO MIX FUEL

1. Measure out the quantities of
gasoline and oil to be mixed.

2. Put some of the gasoline into a
clean approved fuel container.

3. Pour on all of the oil and agitate
well.

4. Pour in the rest of gasoline and
agitate again for at least one minute.
As some oils may be difficult to
agitate depending on oil ingredients.
Sufficient agitation is necessary for
the engine to last long. Be careful. If
the agitation is insufficient, there is
an increased danger of early piston
seizing due to abnormally lean
mixture.

5. Put a clear indication on the
outside of the container to avoid
mixing up with gasoline or other
containers.

6. Indicate the contents on outside
of container for easy identification.

FUELING THE UNIT

1. Untwist and remove the fuel cap.
Rest the cap on dustless place.

2. Put fuel into the fuel tank to 80%
of the fuel capacity.

3. Fasten the fuel cap securely and
wipe up any fuel spillage around the
unit.

WARNING

1. Select bare ground for fueling.

2. Move at least 10 feet away from
the fueling point before starting the
engine.

3. Stop the engine before refueling
the unit. At that time, be sure to
sufficiently agitate the mixed
gasoline in the container.

FOR YOUR ENGINE LIFE, AVOID:

1. FUEL WITH NO OIL (RAW
GASOLINE) - It will cause severe
damage to the internal engine parts
very quickly.

2. GASOHOL - It can cause
deterioration of rubber and/or plastic
parts and disruption of engine
lubrication..

3

3. OIL FOR 4-CYCLE ENGINE
USE - It can cause spark plug
fouling, exhaust port blocking or
piston ring sticking.

4. Mixed fuels which have been
left unused for a period of one
month or more may clog the
carburetor and result in the engine
failing to operate properly.

5. In the case of storing the
product for a long period of time,
clean the fuel tank after emptying.
Next, activate the engine and
empty the carburetor of the
composite fuel.

6. Dispose of the used oil only at
an authorized repository site.

CHAIN OIL

Use motor oil SAE #10W-30 all
year round or SAE #30 ~ #40 in
summer and SAE #20 in winter.

NOTE: Do not use wasted or
regenerated oil that can cause
damage to the oil pump.

OPERATING THE ENGINE

WARNING: It is very dangerous

to run a chainsaw that mounts
broken parts or lacks any parts.
Before starting the engine, make
sure that all the parts including
bar and chain are installed
properly.

STARTING THE ENGINE

1. Fill the chain oil and fuel tanks
respectively, then tighten the caps
securely.

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4

2. Set the switch to the “I” position.

3. Pull throttle trigger and push
throttle lock button. Release throttle
lever prior to starting.

4. Pull out the choke knob to the
second stage position. The choke
will close and the throttle lever will
then be set in the starting position.

5. Press the primer bulb until the
bubble is completely filled with fuel.

NOTE: When starting immediately
after stopping the engine, set the
choke knob in the first-stage position
(choke open and throttle lever in the
starting position).

NOTE: Once the choke knob has
been pulled out, it will not return to
the operating position even if you
press down on it with your finger.
When you wish to return the choke
knob to the operating position, pull
out the throttle lever instead.

6. While holding the saw unit
securely on the ground, pull the
starter rope vigorously 3 to 4 times.

WARNING: Do not start the engine
while the chainsaw hangs in one
hand. The saw chain may touch
your body causing injury.

7. When the engine has ignited,
push in the choke knob to the first­stage position. Repeat step 3, then
pull the starter again to start the
engine.

8. Allow the engine to warm up with
the throttle lever pulled slightly.

WARNING: Keep clear of the saw
chain as it will start rotating upon
starting engine.

CHECKING THE OIL SUPPLY

WARNING: Make sure to set up

the bar and the chain when
checking the oil supply. If not, the
rotating parts may be exposed. It is
very dangerous.

After starting the engine, run the
chain at medium speed and see if
the chain oil is scattered as shown
in the figure.

CHAIN BRAKE

This machine is equipped with an
automatic brake to stop saw chain
rotation upon occurrence of
kickback during saw cutting. The
brake is automatically operated by
inertial force, which puts on the
weight fitted inside the front guard.

This brake can also be operated
manually with the front guard
turned down to the guide bar.

To release the brake, pull up the
front guard toward the front
handle till a “click” sound is
heard.

CAUTION: Be sure to confirm

brake operation during daily
inspection.

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HOW TO CONFIRM:

1. Turn off the engine.

2. Holding the chainsaw horizontally,
release your hand from the front
handle. Hit the tip of the guide bar to
a stump or a piece of wood, and
confirm brake operation. Operating
level varies by bar size.

In case the brake is not effective, ask
your dealer for inspection and
repairs.

If the engine keeps rotating at
high speed with the brake
engaged, the clutch will overheat
causing trouble. When the brake
engages during operation,
immediately release the throttle
lever to stop the engine.

STOPPING THE ENGINE

1. Release the throttle lever to allow
the engine to idle for a few minutes.

2. Set the switch to “O” (STOP)
position.

CARBURETOR ANTI-FREZE
MECHANISM

Operating chainsaws in
temperatures of 0 - 5° C at times of
high humidity may result in ice
forming within the carburetor. This, in
turn, may cause the output power of
the engine to be reduced or for the
engine to fail to operate smoothly.

This product has accordingly been
designed with a ventilation hatch on
the right side of the surface of the
cylinder cover to allow warm air to
be supplied to the engine and to
thereby prevent icing from occurring.

Under normal circumstances the
product should be used in the
normal operating mode, i.e. in the
mode to which it is set at the time of
shipment. However, when the
possibility exists that icing may
occur. The unit should be set to
operate in the anti-freeze mode
before use.

WARNING: Continuing to use the
product in the anti-freeze mode even
when temperatures have risen and
returned to normal, may result in the
engine failing to start properly or in
the engine failing to operate at its
normal speed. For this reason you
should always be sure to return the
unit to the normal operating mode if
there is no danger of ice.

HOW TO SWITCH BETWEEN
OPERATING MODES

1. Flip the engine switch to turn off
the engine.

2. Remove the cover to the air
filter, remove the air filter, and
then remove the choke knob from
the cylinder cover.

3. Loosen the screws holding the
cylinder cover in place (i.e. the
three screws on the inside and the
one screw on the outside of the
cover), and then remove the
cylinder cover.

4. Press with your finger down on
the icing cap located on the right­hand side of the cylinder cover to
remove the icing cap.

5. Adjust the icing cap so that the
“snow” mark faces upwards and
then return it to its original position
in the cylinder cover.

6. Fix the cylinder cover back into
its original position, and then fix all
other parts back into their proper
position.

SAWING

CAUTION: Before proceeding to

your job, read and understand the
manual completely. It is
recommended that you practice
sawing easy logs. This also helps
you get accustomed to your unit.

WARNING: Always follow the
safety regulations. The chainsaw
must only be used for cutting
wood. It is forbidden to cut other
types of material. Vibrations and
kickback vary with different
materials and the requirements of
the safety regulations would not
be respected.Do not use the
chainsaw as a lever for lifting,
moving, or splitting objects. Do
not lock it over fixed stands. It is
forbidden to hitch tools or
applications to the PTO other than
those specified by the
manufacturer.

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• It is not necessary to force the saw
into the cut. Apply only light pressure
while running the engine at full
throttle.

• When the saw chain is caught in
the cut, do not attempt to pull it out
by force, but use a wedge or a lever
to open the way.

GUARD AGAINST KICKBACK

OILING PORT

• This saw is equipped with a chain
brake that will stop the chain in the
event of kickback if operating
properly. You must check the chain
brake operation before each usage
by running the saw at ful throttle for
1-2 seconds and pushing the front
hand guard forward. The chain
should stop immediately with the
engine at full speed. If the chain is
slow to stop or does not stop,
replace the brake band and clutch
drum before use.

• It is extremely important that the
chain brake be checked for proper
operation before each use and that
the chain be sharp in order to
maintain the kickback safety level of
this saw. Removal of the safety
devices, inadequate maintenance, or
incorrect replacement of the bar and
chain may increase the risk of
serious personal injury due to
kickback.

FELLING A TREE

1. Decide the felling direction
considering the wind, lean of the
tree, location of heavy branches,
ease of completing the task after
felling and other factors.

2. While clearing the area around
the trees, arrange a good foothold
and retreat path.

3. Make a notch cut one-third of the
way into the tree on the felling side.

4. Make a felling cut from the
opposite side of the notch and at a
level slightly higher than the bottom
of the notch.

CAUTION: When you fell a tree, be
sure to warn neighboring workers of
the danger.

BUCKING AND LIMBING

CAUTION

• Always ensure your foothold. Do
not stand on the log.

• Be alert to the rolling over of a cut
log. Especially when working on a
slope, stand on the uphill side of the
log.

• Follow instructions in the manual
for proper felling.

Before starting work, check the
direction of bending force inside the
log to be cut. Always finish cutting
from the opposite side of the
bending direction to prevent the
guide bar from being caught in the
cut.

A LOG LYING ON THE GROUND

Saw down halfway, then roll the log
over and cut from the opposite side.

A LOG HANGING OFF THE
GROUND

In area A, saw up from the bottom
one-third and finish by sawing
down from the top. In area B, saw
down from the top one-third and
finish by sawing up from the
bottom.

CUTTING THE LIMBS OF
FALLEN TREE

First check to which side the limb
is bent. Then make the initial cut
from the bent side and finish by
sawing from the opposite side.

CAUTION: Be alert to the
springing back of a cut limb.

PRUNING OF STANDING LIMB

Cut up from the bottom, finish
down from the top.

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7

CAUTION

• Do not use an unstable foothold or
ladder.

• Do not overreach.

• Do not cut above shoulder height.

• Always use both your hands to hold
the saw.

MAINTENANCE

CAUTION: Before cleaning,

inspecting or repairing the unit, make
sure that the engine has stopped and
is cool. Disconnect the spark plug to
prevent accidental starting.

MAINTENANCE AFTER EACH USE

1. AIR FILTER

Dust on the cleaner surface can be
removed by tapping a corner of the
cleaner against a hard surface. To
clean dirt in the meshes, split the
cleaner into halves and brush in
gasoline. When using compressed
air, blow from the inside.

To assemble the cleaner halves,
press the rim until it clicks.

NOTE: When installing the main
filter, make sure that the grooves on
the filter edge are correctly fit with
the projections on the cylinder cover.

2. OILING PORT

Dismount guide bar and check the
oiling port for clogging.

3. GUIDE BAR

When the guide bar is dismounted,
remove sawdust in the bar groove and
the oiling port.

Grease the nose sprocket from the
feeding port on the tip of the bar.

4. OTHERS

Check for fuel leakage and loose
fastenings and damage to major
parts, especially handle joints and
guide bar mounting. If any defects are
found, make sure to have them
repaired before operating the saw
again.

PERIODICAL SERVICE POINTS

1. CYLINDER FINS

Dust clogging between the cylinder
fins will cause overheating of the
engine. Periodically, check and
clean the cylinder fins after
removing the air cleaner and the
cylinder cover. When installing the
cylinder cover make sure that the
switch wires and grommets are
positioned correctly in place.

NOTE: Be sure to block the air
intake hole.

2. FUEL FILTER

a. Using a wire hook, take out the
filter from the filler port.

b. Disassemble the filter and wash
with gasoline, or replace with a
new one if needed.

NOTE:

• After removing the filter, use a
pinch to hold the end of the
suction pipe.

• When assembling the filter, take
care not to allow filters or dust
inside the suction pipe.

3. OIL TANK

With a wire hook, take out the oil
filler port and clean in gasoline.
When putting the filter back into
the tank, make sure that it comes
to the front right corner. Also
clean off the dirt in the tank.

4. SPARK PLUG

Clean the electrodes with a wire
brush and reset the gap to 0.65
mm as necessary.

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8

5. SPROCKET

Check for cracks and for excessive
wear interfering with the chain drive.
If the wear is considerable, replace it
with a new one. Never fit a new
chain on a worn sprocket, or a worn
chain on a new sprocket.

MAINTENANCE OF SAW CHAIN
AND GUIDE BAR

SAW CHAIN

CAUTION: It is very important for

smooth and safe operation to always
keep the cutters sharp.

The cutters need to be sharpened
when:

• Sawdust becomes powder-like.

• You need extra force to saw in.

• The cut path does not go straight.

• Vibration increases

• Fuel consumption increases

Cutter setting standards:

CAUTION: Be sure to wear safety
gloves.

BEFORE FILING:

• Make sure the saw chain is held
securely.

• Make sure the engine is stopped.

• Use a round file of proper size for
chain.

Chain type: 3/8 .050

File Size: 5/32” (4.0mm)

Place the file on the cutter and push
straight forward. Keep the file
position as illustrated.

After each cutter has been filed,
check the depth gauge and file it to
the proper level as illustrated.

Appropriate gauge checker.

Depth gauge standard.

CAUTION: Be sure to round off the
front edge to reduce the chance of
kickback or tie-strap breakage.

Make sure every cutter has the
same length and edge angles as
illustrated.

GUIDE BAR

• Reverse the bar occasionally to
prevent partial wear.

• The bar rail should always be
square. Check for wear of the bar
rail. Apply a ruler to the bar and
the outside of a cutter. If a gap is
observed between them, the rail is
normal. Otherwise, the bar rail is
worn. Such a bar needs to be
corrected or replaced.

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9

[e-mail]

10

[e-mail]

North American Tool Industries (NATI) makes every effort to ensure that this product meets high
quality and durability standards. NATI warrants to the original retail consumer a 1-year limited
warranty from the date the product was purchased at retail and each product is free from defects in
materials. Warranty does not apply to defects due directly or indirectly to misuse, abuse, negligence,
or accidents, repairs or alterations, or a lack of maintenance. NATI shall in no event be liable for
death, injuries to persons or property, or for incidental, special, or consequential damages arising from
the use of our products. To receive service under warranty, the original manufacturer part must be
returned for examination by an authorized service center. Shipping and handling charges may apply. If
a defect is found, NATI will either repair or replace the product at its discretion.

DO NOT RETURN TO STORE

For Customer Service:
Email: [e-mail] or Call 1-800-348-5004

8805466 06/13

38CC CHAINSAW

Model: 5466, 52721

For Customer Service, please call 1-800-348-5004 or
email [e-mail]

11

#

Description Qty.

#

Description Qty.

1

front handle assembly

1

17

base

1

2

front handle assembly torsion rod spring

1

18

screw ST4.8x25

1

3

screw ST4.8x16

2

19

Primer Bulb

1

4

torsion rod spring cap

1

20

pin 6x24

1

5

screw ST4.8x16

4

21

flameout switch

1

6

fuel tule

1

22

trigger torsion spring

1

7

return tube 2

1

23

trigger

1

8

fuel tule base

1

24

trigger controller

1

9

weight block

1

25

handle cover

1

10

fuel filter

1

26

accelerator rod

1

11

base spring

1

27

screw ST4.2x9.5

2

12

washer GB/T 97.1 5

1

28

oil nozzle circlip

1

13

spring washer GB/T 93 5

1

29

oil nozzle

1

14

screw M5x20

1

30

tie-in

1

15

fuel tank cap assembly

1

31

oil filter screen

1

15-1

fuel tank cap

1

32

air tube

1

15-2

packing washer

1

33

balancer assembly

1

15-3

retainer

1

33-1

balancer cover

1

16

oil tank cap assembly

1

33-2

balancer air nozzle

1

16-1

oil tank cap

1

33-3

balancer body

1

16-2

packing washer

1

34

balancer base

1

16-3

retainer

1

Handle & Tank Assembly

8805466 06/13

38CC CHAINSAW

Model: 5466, 52721

For Customer Service, please call 1-800-348-5004 or
email [e-mail]

12

# Description Qty. # Description Qty.

1

brake belt

1

13

front guard

1

2

right cover

1

14

brake torsion spring

1

3

nut M8

2

15

big washer GB/T 96.1 5X 23X1.2

1

4

heavy block tube

1

16

nut M5

1

5

heavy block

1

17

spring intake

1

6

heavy block torsion spring

1

18

front guard spring

1

7

secondary pull-rod

1

19

tightener cover

1

8

main pull-rod

1

20

brake control rod

1

9

pin 3x9

2

21

brake sping

1

10

pin 3x14

1

22

brake spring cover

1

11

screw M5x40

1

23

screw ST4.2x9.5

4

12

front guard tube

1

Brake Assembly

8805466 06/13

38CC CHAINSAW

Model: 5466, 52721

For Customer Service, please call 1-800-348-5004 or
email [e-mail]

13

# Description Qty. # Description Qty.

1

brake belt

1

3-4

secondary pull-rod

1

2

right cover

1

3-5

main pull-rod

1

3

nut M8

2

3-6

pin 3x9

2

3-1

heavy block tube

1

3-7

pin 3x14

1

3-2

heavy block

1

3-8

screw M5x40

1

3-3

heavy block torsion spring

1

4

front guard tube

1

Starter Assembly

8805466 06/13

38CC CHAINSAW

Model: 5466, 52721

For Customer Service, please call 1-800-348-5004 or
email [e-mail]

14

#

Description Qty.

#

Description Qty.

1

worm nylon washar

1 7

oil tube

1

2

worm

1 8

oil nozzle

1

3

needle bearing 10*13*13

1 9

oil pump

1

4

clutch shell

1

10

screw M4x14

2

5

clutch washer

1

11

oil pump cover plate

1

6

clutch assembly

1

12

screw M4x14

2

6-1

retainer

1

13

ground lead

1

6-2

shoe block

3

14

circlip

1

6-3

clutch extension spring

1

Clutch & Oil Pump Assembly

8805466 06/13

38CC CHAINSAW

Model: 5466, 52721

For Customer Service, please call 1-800-348-5004 or
email [e-mail]

15

#

Description Qty.

#

Description Qty.

1

flywheel assembly 1 3 nut M8 1

1-1

flywheel 1 4 screw M4x20 2

1-2

torsional spring 2 5 spring washer GB/T 93 4 2

1-3 pawl 2

6

washer GB/T 97.1 4 2

1-4 pawl screw 2

7

ignitor 1

2 spring washer GB/T 93 8 1 8 flameout wire 1

Flywheel & Ignitor Assembly

8805466 06/13

38CC CHAINSAW

Model: 5466, 52721

For Customer Service, please call 1-800-348-5004 or
email [e-mail]

16

#

Description Qty.

#

Description Qty.

1

screw ST 4.8x16

4

8

throttle lever retainer

1

2

choke plug

1

9

throttle rod

1

3

guide sleeve

1

10

air fillter gasket

1

4

damping block

1

11

air fillter

1

5

igniter sheathing

1

12

air fillter cover

1

6

upper cover plate

1

13

lock nut washer

1

7

dust shield

1

14

air fillter lock nut

1

Upper Cover & Air Filter Cover

8805466 06/13

38CC CHAINSAW

Model: 5466, 52721

For Customer Service, please call 1-800-348-5004 or
email [e-mail]

17

#

Description Qty.

#

Description Qty.

1

nut M5

2

10

air intake tube gasket

1

2 silencer cover plate 1

11

air intake tube 1

3 spark catcher 1

12

carburetor gasket

1

4 silencer assembly 1

13

carburetor

1

5 silencer gasket 1

14

screw ST4.8x16 1

6 nut 5x60 2

15

air intake

1

7

cylinder 1

16

carburetor screw

2

8

nut 5x20 4

17

return tube 1

9 spark plug 1 18

cylinder gasket

1

Cylinder & Carburetor Assembly

8805466 06/13

38CC CHAINSAW

Model: 5466, 52721

For Customer Service, please call 1-800-348-5004 or
email [e-mail]

18

#

Description Qty.

#

Description Qty.

1

crankshaft components 1 5 piston 1

2

woodruff key 2.9X10

1 6

piston ring

1

3

needle bearing ring 2

7

piston pin 1

4

piston pin circlip

2

8 needle bearing NA10x14x11

1

Piston & Crankshaft Assembly

8805466 06/13

38CC CHAINSAW

Model: 5466, 52721

For Customer Service, please call 1-800-348-5004 or
email [e-mail]

19

#

Description Qty.

#

Description Qty.

1 oil seal 12x22x7 1 15 protecting shield 1
2

left crankshaftcase case

1 16 screw M4x10 1

3

bearing 6201 D

2 17 oil seal 12x32x5 1

4

crankshaft case gasket

1 18 ring GB/T 893.132 1

5 pin 3x9 3 19 screw GB/T 2672 4.8x16 1
6 screw M5x10 1 20 screw M5x30 4
7 screw M5x16 1 21

right crankshaftcase

1

8

spiked bumper

1 22

anti-vibaration cushion dust plate

1

9 chain guide 1 23 screw ST5x16 2

10 chain guide screw 1 24

anti-vibaration cushion

1

11

tightener

1 25 engine base 1

12

tightener screw M5*48

1 26 screw M5x16 4

Engine Assembly

20

[e-mail]

I. EMISSION CONTROL WARRANTY STATEMENT

YOUR WARRANTY RIGHTS AND OBLIGATIONS

The United States Environmental Protection Agency (EPA), together with North American Tool Industries are
pleased to explain the Emission Control System Warranty on your new small off-road engine. New small off-road
engines must be designed, built, and equipped to meet stringent anti-smog standards for the state of the federal
government. NATI will warrant the emission control system on your engine for the periods of time listed below
provided there has been no abuse, neglect, unapproved modification, or improper maintenance to your engine.

Your emission control system may include parts such as the carburetor, ignition, intake, and exhaust systems. NATI
will repair your engine at no cost to you for diagnosis, replacement parts, and labor, should a warrantable
condition occur.

MANUFACTURER’S EMISSION CONTROL SYSTEM WARRANTY COVERAGE:

Emission control systems on 2012 and later model year engines are warranted for two years as hereinafter noted. If,
during such warranty period, any emission-related component or system on your engine is found to be defective in
materials or workmanship, a NATI Authorized Warranty Service Facility will perform repairs or replacement.

PURCHASER’S/OWNER’S WARRANTY RESPONSIBILITIES:

As the small off-road engine purchaser/owner, you are responsible for the completion of all required maintenance
as listed in your factory supplied OWNER’S MANUAL. For warranty purposes, NATI recommends that you retain
all receipts covering maintenance on your engine. However, NATI cannot deny warranty solely because of the lack
of receipts or for your failure to ensure the completion of scheduled maintenance.

As the small off-road engine purchaser/owner, you should, however, be aware that NATI may deny any and/or all
warranty coverage, or responsibility if your engine, or a part/component thereof, has failed due to abuse, neglect,
improper maintenance, unapproved modifications, or the use of counterfeit and/or “gray market” parts not made,
supplied, or approved by NATI.

You are responsible for presenting your engine to a NATI Authorized Warranty Service Facility as soon as a
problem occurs. The warranty repairs should be completed in a reasonable amount of time, not to exceed 30 days.

Warranty service can be arranged by contacting either your selling dealer or a NATI Authorized Warranty Service
Facility. To locate the NATI Authorized Service Facility nearest you, call our toll-free number:

1-800-348-5004

IMPORTANT NOTE: This warranty statement explains your rights and obligations under the Emission Control
System Warranty (ECS Warranty), which is provided to you by NATI pursuant to California and federal law. The
ECS Warranty applies only to the emission control system of your new engine. If there is any conflict in terms
between the ECS Warranty and the NATI Warranty, the ECS Warranty shall apply except in circumstances where
the NATI Warranty may provide a longer warranty period. Both the ECS Warranty and the NATI Warranty describe
important rights and obligations with respect to your new engine.

21

[e-mail]

Only a NATI Authorized Warranty Service Facility can perform warranty service. When requesting warranty

service, evidence must be presented showing the date of the sale to the original purchaser/owner. The
purchaser/owner shall be responsible for any expenses or other charges incurred for service calls and/or
transportation of the product to/from the inspection or repair facilities. The purchaser/owner shall also be
responsible for any and/or all damages or losses incurred while the engine is being transported/shipped for
inspection or warranty repairs.

IF YOU HAVE ANY QUESTIONS REGARDING YOUR WARRANTY RIGHTS AND

RESPONSIBILITIES, YOU SHOULD CONTACT NATI AT THE FOLLOWING ADDRESS:

84 COMMERCIAL RD. HUNTINGTON, IN 46750, USA

[e-mail]

II. EMISSION CONTROL SYSTEM WARRANTY

Emission Control System Warranty (ECS Warranty) for 2012 and later model engines:

(a) Applicability: This warranty shall apply to 2012 and later model year engines. The ECS Warranty

Period shall begin on the date the new engine or equipment is purchased by/delivered to its original,
end-use purchaser/owner and shall continue for 24 consecutive months thereafter.

(b) General Emissions Warranty Coverage: NATI warrants to the original, end-use purchaser/owner of the

new engine or equipment and to each subsequent purchaser/owner that each of its engines is

…

a. Designed, built, and equipped so as to conform with all applicable regulations adopted by the

EPA pursuant to their respective authority, and

b. Free from defects in materials and workmanship which, at any time during the ECS Warranty

Period, may cause a warranted emissions-related part to fail to be identical in all material
respects to the part as described in the engine manufacturer’s application for certification.

The ECS Warranty only pertains to emission-related parts on your engine, as follows:

1. Any warranted, emissions-related parts that are not scheduled for replacement as required maintenance
in the Owner’s Manual shall be warranted for the ECS Warranty Period. If any such part fails during
the ECS Warranty Period, it shall be repaired or replaced by NATI according to subsection 4 below.
Any such part repaired or replaced under the ECS Warranty shall be warranted for the remainder of
the ECS Warranty Period.

2. Any warranted, emissions-related part that is scheduled only for regular inspection as specified in the
Owner’s Manual should be warranted for the ECS Warranty Period. A statement in such written
instructions to the effect of “repair or replace as necessary” shall not reduce the ECS Warranty Period.
Any such part repaired or replaced under the ECS Warranty shall be warranted for the remainder of
the ECS Warranty Period.

22

[e-mail]

3. Any warranted, emissions-related part that is scheduled for replacement as required maintenance
in the Owner’s Manual shall be warranted for the period of time prior to the first scheduled
replacement point for that part. If the part fails prior to the first scheduled replacement, the part
shall be repaired or replaced by NATI according to subsection 4 below. Any such emissions-related
part repaired or replaced under the ECS Warranty shall be warranted for the remainder of the ECS
Warranty Period prior to the first scheduled replacement point for such emissions-related part.

4. Repair or replacement of any warranted, emissions-related part under this ECS Warranty shall be
performed at no charge to the owner at a NATI Authorized Warranty Service Facility.

5. When the engine is inspected by a NATI Authorized Warranty Service Facility, the owner shall not
be held responsible for diagnostic costs if the repair is deemed warrantable.

6. NATI shall be liable for damages to other original engine components or approved modifications
proximately caused by a failure under warranty of any emission-related part covered by the ECS
warranty.

7. Throughout the ECS Warranty Period, NATI shall maintain a supply of warranted emission-related
parts sufficient to meet the expected demand for such emissions-related parts.

8. Any NATI authorized and approved emissions-related replacement parts may be used in the
performance of any ECS Warranty maintenance or repairs and will be provided without charge to
the purchaser/owner. Such use shall not reduce NATI’s ECS Warranty obligations.

9. Unapproved, add-on, modified, counterfeit, and/or “gray market” parts may not be used to modify
or repair a NATI engine. Such use voids this ECS Warranty and shall be sufficient grounds for
disallowing an ECS Warranty claim. NATI shall not be held liable hereunder for failures of any
warranted parts of a NATI engine caused by the use of such an unapproved, add-on, modified,
counterfeit, and/or “gray market” part.

23

[e-mail]

EMISSIONS-RELATED PARTS INCLUDE THE FOLLOWING:

For engine families CZHWS.0404SP

1. Fuel Metering System:

a. Gasoline carburetor assembly and its internal components (if so equipped).

b. Fuel Filter (if so equipped).

c. Carburetor Gaskets

d. Fuel Pump (if so equipped).

e. Fuel Hose

f. Clamps

2. Air Induction System including:

a. Intake Pipe/Manifold

b. Air Cleaner

3. Ignition System including:

a. Spark Plug

b. Ignition Module/Coil

4. Catalytic Muffler Assembly (if so equipped)

a. Muffler Gasket

b. Exhaust Manifold

5. Crankcase Breather Assembly including:

a. Breather Connection Tube

6. Fuel tank evaporative emissions control system include:

a. Fuel Tank

b. Fuel Cap

c. Fuel Hose

d. Clamps

7. Miscellaneous items used in above systems including:

a. Switches

b. Hoses, Belts, Connectors, and Assemblies