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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 

[email protected]

Model: 5466,

52721

1

Summary of Contents for 52721

Page 1: ...l 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 rea...

Page 2: ... 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 D...

Page 3: ...side 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 fuel...

Page 4: ...ouch your body causing injury 7 When the engine has ignited push in the choke knob to the first stage 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 ...

Page 5: ...ave 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 fil...

Page 6: ...ors 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 ...

Page 7: ...HERS 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 ...

Page 8: ...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 re...

Page 9: ...9 feedback natitools com ...

Page 10: ...use 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 cha...

Page 11: ... 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 ...

Page 12: ...ke 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 ...

Page 13: ...feedback natitools com 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 ...

Page 14: ...escription 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 ...

Page 15: ...edback natitools com 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 ...

Page 16: ...ion 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 ...

Page 17: ...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 ...

Page 18: ... 1 800 348 5004 or email feedback natitools com 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 ...

Page 19: ...10 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 ...

Page 20: ...d 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 responsib...

Page 21: ...ser 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 ...

Page 22: ...ble 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 dema...

Page 23: ... 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 Miscella...

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