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Echo shindaiwa 402s Operator's Manual

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The engine exhaust from this product contains chemicals
known to the State of California to cause cancer, birth defects,
or other reproductive harm.
Read and understand all provided literature before
use. Failure to do so could result in serious injury.
Note: This product complies with CAN ICES-2/NMB-2.
X7503256304
© 11/23 ECHO Incorporated
Operator's
Manual
402s
Chainsaw

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Summary of Contents for Echo shindaiwa 402s

  • Page 1 State of California to cause cancer, birth defects, or other reproductive harm. Read and understand all provided literature before use. Failure to do so could result in serious injury. Note: This product complies with CAN ICES-2/NMB-2. X7503256304 © 11/23 ECHO Incorporated...

  • Page 2: Table Of Contents

    Cooling System Cleaning................. 50 Spark Arrester Muffler ..................50 Spark Arrester Screen..................50 Exhaust Port Cleaning ..................51 Setting the Saw Chain..................52 Troubleshooting......................55 Storage........................57 Storage After Use..................... 57 Specifications ......................58 Product Registration....................60 X7503256304 © 11/23 ECHO Incorporated...

  • Page 3: Introduction

    Model Number and Serial Number of the unit with you. For future reference, write them in the space provided below. Model No. _____________________ Serial No. _____________________ X7503256304 © 11/23 ECHO Incorporated...

  • Page 4: Service

    Registering your product confirms your warranty coverage and provides a direct link between you and ECHO if we find it necessary to contact you. Additional Literature In addition to finding information online, information is available from your Authorized Shindaiwa Service Dealer, or by contacting ECHO Incorporated, 400 Oakwood Road, Lake Zurich, IL 60047, 1-800-432-ECHO (3246).

  • Page 5: Safety

    Note: This enclosed message provides tips for use, care and maintenance of the unit. CIRCLE AND SLASH SYMBOL This symbol means the specific action shown is prohibited. Ignoring these prohibitions can result in serious or fatal injury. X7503256304 © 11/23 ECHO Incorporated...

  • Page 6: International Symbols

    Both of the operator’s hands Fuel and Oil must be used to Mixture operate the chainsaw. Hot Surface Chain Oil Fill X7503256304 © 11/23 ECHO Incorporated...
  • Page 7 Chain Oiler Operation Adjustment Choke Control “COLD START” Position (Choke Closed) Purge Bulb Choke Control “RUN” Position (Choke Open) STOP / Decompression Momentary Device STOP Switch Note: Not all symbols will appear on your unit. X7503256304 © 11/23 ECHO Incorporated...

  • Page 8: Personal Condition And Safety Equipment

    Eye protection that meets ANSI Z87.1 or CE requirements ◆ must be worn whenever you operate the unit. For additional safety, a full-face shield can be worn over ◆ safety glasses or goggles to provide protection from sharp branches or flying debris. X7503256304 © 11/23 ECHO Incorporated...
  • Page 9 Gloves also provide protection against cuts and scratches, cold environments, and reduce the transmission of machine vibration to your hands. Hearing and Ear Protection ECHO recommends wearing personal protective equipment whenever unit is used. Breathing Protection Operators who are sensitive to dust or other common airborne allergens may need to wear a dust mask to prevent inhaling these materials while operating unit.
  • Page 10 To reduce the risk of serious or fatal injury, persons with pacemakers should consult with their physician and the pacemaker manufacturer before operating this machine. In the absence of such information, ECHO does not recommend the use of this machine by anyone who has a pacemaker.
  • Page 11 Never touch wires directly or indirectly, otherwise serious injury or death can result. Do not operate this product indoors or in inadequately ventilated areas. Engine exhaust contains poisonous emissions and can cause serious injury or death. X7503256304 © 11/23 ECHO Incorporated...

  • Page 12: Rules For Safe Operation

    With a basic understanding of kickback, you can reduce or eliminate the element of Kickback Danger Zone surprise. Sudden surprise contributes to accidents. X7503256304 © 11/23 ECHO Incorporated...

  • Page 13: Correct Use Of Chain Brake

    • If the brake is tripped by kickback reaction, the chain will stop immediately. Release the throttle to avoid possible damage to the engine or clutch. • Do not attempt to operate the Locked engine with the brake locked. X7503256304 © 11/23 ECHO Incorporated...
  • Page 14 Chain brakes have been designed and tested to comply with international safety standards as follows: USA: ANSI Standard B175.1 Safety Requirement for chainsaws Canada: CSA Standard Z62.1, Z62.3 X7503256304 © 11/23 ECHO Incorporated...
  • Page 15 The impact should lock the chain brake. When checking the operation of the automatic chain brake, use a soft surface substance like wood to absorb the impact so the chain is not damaged. X7503256304 © 11/23 ECHO Incorporated...
  • Page 16 14. Keep the handles dry, clean, and free of oil or fuel mixture. 15. Operate the chainsaw only in well ventilated areas. 16. Do not operate a chainsaw in a tree unless you have been specifically trained to do so. X7503256304 © 11/23 ECHO Incorporated...
  • Page 17 Always use the saw from the right-hand side of your body –  NEVER from the left side. Always wear proper safety clothing to protect your lower  body from sharp saw chain and hot muffler. X7503256304 © 11/23 ECHO Incorporated...
  • Page 18 If damage or leaks are found, do not use unit, otherwise serious personal injury or property damage may occur. Have unit repaired by an authorized servicing dealer before using. X7503256304 © 11/23 ECHO Incorporated...

  • Page 19: Emission Control (Exhaust & Evaporative)

    The 50 or 300 hour emission compliance period is the time span selected by the manufacturer certifying the engine emissions output meets applicable emissions regulations, provided that approved maintenance procedures are followed as listed in the Maintenance Section of this manual. X7503256304 © 11/23 ECHO Incorporated...

  • Page 20: Description

    If any cannot be read, replacements can be ordered from your Shindaiwa dealer. Images shown below are for example only. Those on your unit might appear slightly different X7503256304 © 11/23 ECHO Incorporated...
  • Page 21 CHAIN BRAKE - Stops the saw chain. DRIVE SPROCKET - Drives saw chain. CLUTCH - Turns drive sprocket when engine rpm is fast enough to provide the power needed for cutting. X7503256304 © 11/23 ECHO Incorporated...

  • Page 22: Contents

    Instructions to Install Optional Kick Guard to Bar Tools Needed: Two 11 mm (7/16 in.) Wrenches. For saws with Optional Kick Guard, P/N 2894901, and Symmetrical or Asymmetrical Low-Kick type (Double Guard) guide bars: X7503256304 © 11/23 ECHO Incorporated...
  • Page 23 Move the chain brake lever (A) (Front hand guard) fully REARWARD (UNLOCK chain brake) to remove or install the sprocket guard cover (C). Remove sprocket guard cover nuts (D) and remove sprocket guard cover (C). X7503256304 © 11/23 ECHO Incorporated...
  • Page 24 If brake band is not in place around drum, remove sprocket guard cover (C), and reinstall. Tighten sprocket guard nuts (D) finger tight. Adjust saw chain tension, as instructed in “Adjusting Chain Tension”. X7503256304 © 11/23 ECHO Incorporated...
  • Page 25 Release the cylinder cover thumbscrew, and remove the cylinder cover. Remove spark plug lead. Unlock chain brake and Unlock chain brake loosen sprocket guard nuts. Hold the bar nose up, and turn the adjuster screw (A) clockwise until chain contacts underside of the bar. X7503256304 © 11/23 ECHO Incorporated...
  • Page 26 Pull the chain around the bar by hand. Loosen the adjustment if you feel tight spots. Assemble components in reverse order. Keep chain properly tensioned at all times. Note: All chains require frequent adjustments. X7503256304 © 11/23 ECHO Incorporated...

  • Page 27: Operation

    Gasoline may contain up to 10% Ethanol (grain alcohol) or 15% MTBE (methyl tertiary-butyl ether). Gasoline containing methanol (wood alcohol) is NOT approved. Use of ECHO branded fuel is recommended to extend engine life in all air-cooled 2-stroke and 2/4-stroke hybrid engines.
  • Page 28 Do not smoke while fueling or mixing fuel. Move the unit at least 10 feet (3 m) from the fueling point before starting the engine. X7503256304 © 11/23 ECHO Incorporated...
  • Page 29 Store in a well-ventilated, unoccupied building, away from sparks and flames. Stored fuel ages. Do not mix more fuel than you expect to use in thirty (30) days, ninety (90) days when a fuel stabilizer is added. X7503256304 © 11/23 ECHO Incorporated...

  • Page 30: Chain Lubricant

    Keep hands, clothing and loose objects away from all openings. Always stop engine, disconnect spark plug, and make sure all moving parts have come to a complete stop before removing obstructions, clearing debris, or servicing unit. X7503256304 © 11/23 ECHO Incorporated...

  • Page 31: Winter Operation

    (B), and install into cold weather position (C). Note: For operation at normal temperature (5°C [41°F]) return the plug to its original position. To prevent over heating of the engine. X7503256304 © 11/23 ECHO Incorporated...

  • Page 32: Starting Cold Engine

    (fast idle latch condition). The chain will attempt to move when engine is started with ◆ fast idle throttle latch engaged. Do not start engine before chain brake is locked. ◆ X7503256304 © 11/23 ECHO Incorporated...
  • Page 33 Never use fast idle throttle latch for cutting. ◆ Use the fast idle throttle latch only in starting. ◆ Note: Do not increase engine speed while chain brake is locked. Severe brake damage will result. X7503256304 © 11/23 ECHO Incorporated...

  • Page 34: Starting Warm Engine

    Choke may be used if necessary, but after first starting sound, squeeze throttle trigger to release choke and return engine to idle. Note: If engine does not start after 5 pulls, use cold start procedure. X7503256304 © 11/23 ECHO Incorporated...

  • Page 35: Running

    The chain starts running when the engine reaches clutch engagement speed (see Specifications page). Confirm proper acceleration and lubrication of chain and bar. Do not run the engine at high speed unnecessarily. X7503256304 © 11/23 ECHO Incorporated...

  • Page 36: Stopping

    Chain Lubrication Test Hold the chain just above a dry surface and open the throttle to half speed for 30 seconds. A thin line of “thrown” oil should be seen on the dry surface. X7503256304 © 11/23 ECHO Incorporated...

  • Page 37: Cutting Instructions

    Before attempting to fell a tree, cut some small logs or limbs. Become thoroughly familiar with the controls and the responses of the saw. X7503256304 © 11/23 ECHO Incorporated...
  • Page 38 Keep chain properly tensioned during operation to prevent ◆ the chain from jumping out of the guide bar rail slot and damaging metal engine parts. X7503256304 © 11/23 ECHO Incorporated...
  • Page 39 5 cm (2 in.) will act as a One-third tree diameter hinge when the tree falls, guiding it in the desired direction. When the tree starts to fall, kill the engine, place the saw on the ground and make your retreat quickly. X7503256304 © 11/23 ECHO Incorporated...
  • Page 40 Always use both hands. Don’t cut with the saw overhead or aligned vertically with your body. If the saw should kick back, you may not have enough control to prevent possible injury. X7503256304 © 11/23 ECHO Incorporated...

  • Page 41: Guide Bar And Chain Combination

    Guide Bar and Chain Combination The following combinations are recommended for model 402s. Guide Bar Saw Chain Shindiawa Part Length Pitch (in.) Type Links mm (in.) Low-kickback 406 (16) S16A0CD3757 91PX / 91VG 457 (18) S18A0CD3762 X7503256304 © 11/23 ECHO Incorporated...

  • Page 42: Kick Guard Tm

    To purchase an optional Kick Guard contact your dealer. For the name of the ECHO dealer nearest you, call 1-800-432-ECHO (3246) or on the web at www.echo-usa.com. For the name of the Shindaiwa dealer nearest you, call 1-877-986-7783 or on the web at www.shindaiwa-usa.com.

  • Page 43: Maintenance

    Level 1 = Easy to do. Common tools may be required. Level 2 = Moderate difficulty. Some specialized tools may be required. Level 3 = See your dealer. Click HERE or go to http://www.echo-usa.com/products/maintenance-kit HERE https://www.shindaiwa-usa.com/you-can.aspx X7503256304 © 11/23 ECHO Incorporated...

  • Page 44: Maintenance Intervals

    Air Filter Replace * Oil Filter Inspect / Replace * Fuel Filter Inspect * Fuel Cap Gasket Inspect * Spark Plug Inspect / Clean / Replace * Muffler Spark Arrester Inspect / Clean / Replace * X7503256304 © 11/23 ECHO Incorporated...

  • Page 45: Carburetor Adjustment

    335 m (1,100 ft.) above sea level (ASL) (96.0 kPa). To maintain proper engine operation above 335 m (1,100 ft.) ASL the carburetor might need to be adjusted by an authorized service dealer. X7503256304 © 11/23 ECHO Incorporated...
  • Page 46 When starting, idling adjustment speed should be adjusted to prevent the saw chain from moving. When you experience trouble with the carburetor, contact your dealer. X7503256304 © 11/23 ECHO Incorporated...

  • Page 47: Air Filter

    • Check periodically. • Do not allow dust to enter fuel tank. • A clogged filter (A) will cause difficulty in starting engine or abnormalities in engine performance. Pull filter out through gas port, and inspect filter. X7503256304 © 11/23 ECHO Incorporated...

  • Page 48: Automatic Oiler

    • Do not turn the adjusting screw beyond the maximum or minimum limit of volume adjustment. Oil Filter • Check periodically. • Do not allow dust to enter into oil tank. • A clogged oil filter (B) will affect the normal lubricating system. X7503256304 © 11/23 ECHO Incorporated...

  • Page 49: Guide Bar

    • Check sprocket when you install new chain. Replace it if worn. Some tree sap and resins are corrosive. Thoroughly wash the guide bar and sprocket areas after each use, then coat metal parts with light oil. X7503256304 © 11/23 ECHO Incorporated...

  • Page 50: Cooling System Cleaning

    Remove air cleaner cover and remove spark plug lead. Remove spark arrester cover (C) and screen (B) from muffler (A) body. Clean carbon deposits from muffler components. Replace screen if it is cracked, or has holes burned through. X7503256304 © 11/23 ECHO Incorporated...

  • Page 51: Exhaust Port Cleaning

    11. Install guide bar and chain. Adjust chain tension. 12. Start engine and check for exhaust leaks between muffler and cylinder head. Stop engine if leak is found and correct problem before operating chain saw. X7503256304 © 11/23 ECHO Incorporated...

  • Page 52: Setting The Saw Chain

    • For setting saw chain, round file (5/32 in. diameter) and flat file are used. • Push file as shown. 30° • To keep correct position and correct angle, use a file holder. Keep this angle X7503256304 © 11/23 ECHO Incorporated...
  • Page 53 • Be sure 1/5th of the file diameter remains above cutter edge. 1/5th • Be sure to round off the front edge of the depth gauge. X7503256304 © 11/23 ECHO Incorporated...
  • Page 54 • If the saw chain becomes Parallel depth gauge soiled with resin, for instance, clean it with kerosene and soak in it oil. To sharpen other chains, follow chain manufacturer’s instructions. X7503256304 © 11/23 ECHO Incorporated...

  • Page 55: Troubleshooting

    Clean or replace runs, but Fuel filter Contaminants Replace filter or dies Fuel filter dirty or residue in fuel replace fuel Engine Fuel vent Contaminated Fuel vent Clean or replace does not plugged fuel accelerate properly X7503256304 © 11/23 ECHO Incorporated...
  • Page 56 See your dealer problem crank Fuel vapors are extremely flammable and can cause fire and/or explosion. Never test for ignition spark by grounding spark plug near cylinder plug hole, otherwise serious personal injury can result. X7503256304 © 11/23 ECHO Incorporated...

  • Page 57: Storage

    Do not lend or rent your chainsaw without the Operator’s Manual. Note: • For future reference, you should keep this Operator’s Manual. • If this Operator’s Manual becomes illegible or is lost, please contact your dealer, or go to www.echo-usa.com. X7503256304 © 11/23 ECHO Incorporated...

  • Page 58: Specifications

    Automatic rewind starter Clutch Centrifugal type Sprocket type Spur type, 6-tooth, 3/8 in. pitch Chain brake Automatic band brake type Idle speed 2,700 RPM Clutch engagement 4,100 RPM speed Wide Open Throttle 12,000 RPM speed X7503256304 © 11/23 ECHO Incorporated...
  • Page 59 Chain tensioner Side access system Guide bar 18, 16 in. Saw chain 91PX, 91VG Front hand guard, Rear hand guard, Anti- vibration device, Spiked bumper, Throttle Standard features control lockout, Chain catcher, Spark arrester muffler X7503256304 © 11/23 ECHO Incorporated...

  • Page 60: Product Registration

    Please go to http://www.shindaiwa-usa.com to register your new product on-line. It's FAST and EASY! NOTE: your information will never be sold or misused by ECHO Incorporated. Registering your purchase enables us to contact you in the unlikely event of a service update or product recall, and verifies your ownership for warranty consideration.
  • Page 61 402S PRODUCT REGISTRATION X7503256304 © 11/23 ECHO Incorporated...
  • Page 62 NOTES 402S NOTES X7503256304 © 11/23 ECHO Incorporated...
  • Page 63 402S NOTES X7503256304 © 11/23 ECHO Incorporated...
  • Page 64 C69915001001 - C69915999999 ECHO INCORPORATED 400 Oakwood Road Lake Zurich, IL 60047 -usa www.shindaiwa .com...

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