Shindaiwa 402S-18 Operator's Manual
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Shindaiwa 402S-18 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.
X7503256302
© 09/19 ECHO Incorporated
Operator's
Manual
402s
Chain Saw

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  • Page 1 Operator’s Manual 402s Chain Saw 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. X7503256302 ©...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Introduction ....................4 Servicing Information .................. 4 Parts/Serial Number................4 Service ....................5 Consumer Product Support ..............5 Product Registration ................5 Additional Literature ................5 Packing List....................5 Safety ......................6 Rules For Safe Operation ..............6 Correct Use Of Chain Brake ..............
  • Page 3 402S TABLE OF CONTENTS Maintenance ..................... 42 Skill Levels ..................42 Maintenance Intervals ............... 43 Carburetor Adjustment ..............44 Air Filter ..................... 45 Spark Plug ..................45 Check Fuel System ................46 Fuel Filter ..................46 Automatic Oiler .................. 47 Oil Filter .....................

  • Page 4: Introduction

    SERVICING INFORMATION Parts/Serial Number Genuine SHINDAIWA Parts and Assemblies for your SHINDAIWA products are available only from an Authorized SHINDAIWA Dealer. When you do need to buy parts always have the Model Number and Serial Number of the unit with you.

  • Page 5: Service

    Service Service of this product during the warranty period must be performed by an Authorized SHINDAIWA Service Dealer. For the name and address of the Authorized SHINDAIWA Service Dealer nearest you, ask your retailer or call: 1-877-986-7783. Dealer information is also available on WWW.SHINDAIWA-USA.COM.

  • Page 6: Safety

    SAFETY 402S SAFETY Rules For Safe Operation Kickback Safety Precautions for Chain Saw Users KICKBACK may occur when the nose or tip of the guide bar touches an object, or when the wood closes in and pinches the saw chain in the cut. Tip contact in some cases may cause Rotational kickback a lightning fast reverse REACTION,...

  • Page 7: Correct Use Of Chain Brake

    402S SAFETY Keep a good firm grip on the saw with both hands, the right hand on the rear handle, and the left hand on the front handle, when the engine is running. Use a firm grip with thumbs and fingers encircling the chain saw handles.
  • Page 8 SAFETY 402S • Slowly operate the chain brake lever while holding the saw firmly on the ground. When the brake lever trips, the chain should stop. Immediately release the throttle trigger. Do not allow the saw to tip forward in order to avoid damage to the chain.
  • Page 9 402S SAFETY ANSI Standard B175.1 and CSA Z62.1.3 stipulate that the brake shall stop the chain 0.12 seconds at an engine speed of 13,500 r/min. It is the 35 cm responsibility of the owner/ (14 in.) operator to ensure that the brake is serviced, adjusted and tested strictly in accordance with the instructions as detailed...
  • Page 10 SAFETY 402S Other Safety Precautions Do not operate a chain saw with one hand! Serious injury to the operator, helpers, bystanders, or any combination of these persons may result from one-handed operation. A chain saw is intended for two- handed use. Do not operate a chain saw when you are fatigued.
  • Page 11 402S SAFETY 18. When transporting your chain saw, use the appropriate guide bar scabbard. 19. A spark arrestor muffler approved to SAE Standard J335 is standard on this chain saw to reduce the possibility of forest fires. Do not operate the chain saw with a loose or defective muffler.

  • Page 12: Personal Condition And Safety Equipment

    SAFETY 402S Moving parts can amputate fingers or cause severe injuries. 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.
  • Page 13 402S SAFETY Users of this product risk injury to themselves and others if the unit is used improperly and/or safety precautions are not followed. Proper clothing and safety gear must be worn when operating unit. Physical Condition Your judgment and physical dexterity may not be good: •...
  • Page 14 SAFETY 402S Proper Clothing Wear snug-fitting, durable clothing: • Pants should have long legs, shirts should have long sleeves. • DO NOT WEAR SHORTS. • DO NOT WEAR TIES, SCARVES, JEWELRY, or clothing with loose or hanging items that could become entangled in moving parts or surrounding growth.
  • Page 15 402S SAFETY It is believed that a condition called Raynaud’s Phenomenon, which affects the fingers of certain individuals, may be brought about by exposure to vibration and cold. Exposure to vibration and cold may cause tingling and burning sensations, followed by loss of color and numbness in the fingers. The following precautions are strongly recommended, because the minimum exposure, which might trigger the ailment, is unknown.

  • Page 16: International Symbols

    SAFETY 402S • Immediately stop using all power equipment and consult a doctor if you feel tingling, numbness, or pain in the fingers, hands, wrists, or arms. The sooner RSI/CTS is diagnosed, the more likely permanent nerve and muscle damage can be prevented. All over head electrical conductors and communications wires can have electricity flow with high voltages.
  • Page 17 402S SAFETY Symbol Description Symbol Description Hot Surface Chain Oil Fill Chain Oiler Chain Brake Operation Adjustment Choke Control “COLD START” Position Purge Pump (Choke Closed) Measured maximum kickback value, without brake, for approved bar and chain combinations. X7503256302 © 09/19 ECHO Incorporated...

  • Page 18: Manual Safety Symbols And Important Information

    SAFETY 402S Manual Safety Symbols and Important Information Throughout this manual and on the product itself, you will find safety alerts and helpful, informational messages preceded by symbols or key words. The following is an explanation of those symbols and key words and what they mean to you.

  • Page 19: (Exhaust & Evaporative)

    402S EMISSION CONTROL EMISSION CONTROL (EXHAUST & EVAPORATIVE) CARB And EPA Emissions Control Information The emission control system for the engine is EM (engine modification) and, if the second to last character of the Engine Family on the Emission Control Information label (sample below) is “B”, “C”, “K”, or “T”, the emission control system is EM and TWC (3-...

  • Page 20: Description

    Locate the safety decal(s) on your unit. Make sure the decal(s) is legible and that you understand and follow the instructions on it. If a decal cannot be read, a new one can be ordered from your Shindaiwa dealer. Safety label is for example only. Your label my appear slightly different.
  • Page 21 402S DESCRIPTION Front Handle - For The Left Hand Chain Brake Lever / Front Hand Guard Spark Arrestor Muffler or Spark Arrestor Muffler With Catalyst Kick Guard (Optional) Saw Chain Guide Bar Spiked Bumper Chain Catcher Chain Tension Adjuster 10. Chain Brake / Sprocket Guard 11.

  • Page 22: Preparation For Use

    DESCRIPTION 402S Preparation For Use Saw chain is sharp! Always wear gloves when handling assembly, otherwise serious personal injury may result. Note: The machine may be delivered with guide bar, and saw chain separated. Install guide bar, saw chain, and optional Kick Guard as follows.
  • Page 23 402S DESCRIPTION Guide Bar and Saw Chain Installation/Removal Align the brake connector (B) on the sprocket guard cover (C) to the groove on the side of the brake lever (A) (Front hand guard). Remove air cleaner cover and disconnect spark plug lead. Move the chain brake lever (A) (Front hand guard) fully REARWARD (UNLOCK chain...
  • Page 24 DESCRIPTION 402S Install sprocket guard cover (C) over guide bar studs (E). Make sure chain tension adjuster pin (H) fits into the guide bar adjuster hole (G), and brake band (J) is positioned around clutch drum. Tighten sprocket guard nuts (D) finger tight. Turn saw over, and check brake band (J) for correct position on clutch drum.
  • Page 25 402S DESCRIPTION Hold the bar nose up, and turn the adjuster screw (A) clockwise until chain contacts underside of the bar. Tighten nuts with the bar nose Shown with optional held up. Kick Guard Tighten guide bar nuts to 20-23 N•m (175-200 in•lbf). DO NOT over- tighten nuts.

  • Page 26: Operation

    2-stroke and 2/4-stroke hybrid engines. Two Stroke Oil - A 2-stroke engine oil, such as Shindaiwa branded 2-stroke oils, meeting ISO-L-EGD (ISO/CD 13738) and J.A.S.O. FD Standards must be used. Shindaiwa branded 2-stroke oils meet these standards. Engine problems due to inadequate lubrication caused by failure to use an ISO-L- EGD (ISO/CD 13738) and J.A.S.O.
  • Page 27 AVOID repeated or prolonged skin contact. ◆ AVOID inhaling oil mists or vapors. ◆ Shindaiwa branded 2-stroke oils may be mixed at 50:1 ratio for application in all Shindaiwa engines sold in the past, regardless of ratio specified in those manuals. Handling Fuel Fuel is VERY flammable.
  • Page 28 OPERATION 402S Mixing Instructions Fuel to Oil Mix – 50:1 Ratio Fill an approved fuel container Metric with half of the required amount of gasoline. Add the proper amount of gal. fl. oz. engine oil to gasoline. Close container and shake to mix oil with gasoline.

  • Page 29: Chain Lubricant

    402S OPERATION Chain Lubricant Note: Cap indication - Fuel/oil tanks are indicated by the following illustrations Proper lubrication of the chain while in operation reduces friction between the chain and the guide bar to a minimum and assures a longer service life. •...

  • Page 30: Winter Operation

    OPERATION 402S Operation of this equipment may create sparks that can start fires around dry vegetation. This unit is equipped with a spark arrestor to prevent discharge of hot particles from the engine. Metal cutters can also create sparks if the cutter strikes rocks, metal, or other hard objects.
  • Page 31 402S OPERATION Move ignition switch (A) UP to “RUN” position. Push purge pump (B) 3 to 4 times or until fuel is visible in purge pump. Pull choke control knob all the way OUT (CLOSED [ ] choke position). After choke control knob is pulled and then knob is ◆...

  • Page 32: Starting Warm Engine

    OPERATION 402S Pull starter handle to start the engine. Note: Do not pull starter rope out to the maximum possible position. Note: Do not allow recoil handle to snap back against the casing. Note: If engine does not start after 5 pulls, repeat instructions. After starting the engine, immediately squeeze and then ◆...

  • Page 33: Running

    402S OPERATION Move ignition switch (A) UP to “RUN” position. Securely hold the chain saw as shown and pull starter handle. Choke may be used if necessary, but after first starting sound, squeeze throttle trigger to release choke and return engine to idle.

  • Page 34: Stopping

    OPERATION 402S After engine starts, allow it to Shown with Optional return to idle and warm up before Kick Guard using. Move chain brake lever fully Unlock Chain brake REARWARD to UNLOCK chain brake. Squeeze throttle trigger (B) gradually and increase engine speed.

  • Page 35: Checking Chain Tension

    402S OPERATION Do not operate with a loose chain. Checking Chain Tension Shown with Optional Kick Guard Chain tension should be checked frequently during work and corrected as necessary. Chain Lubrication Test Shown with Optional Kick Guard Hold the chain just above a dry surface and open the throttle to half speed for 30 seconds.
  • Page 36 OPERATION 402S Do not let the tip of the bar ◆ touch anything while the engine is running. At cutting speed the chain is moving at a high rate of speed. Should the tip Kickback contact a limb or log while the chain is moving, the tip will be pushed upward with considerable force.
  • Page 37 402S OPERATION • Remove sprocket cover. Clean wood chips and sawdust from cover and engine crankcase. • Never use metal tools for cleaning which may scratch the metal paint and allow corrosion to develop. • Clean sap accumulation from metal parts with cloth and warm water with soap.
  • Page 38 OPERATION 402S Begin the cut on the side to Direction of fall which the tree is to fall. Cut a Hinge notch about 1/3 of the way into 5 cm (2 in.) the tree. The position of this notch is important since the tree First cut Felling cut will try to fall “into”...
  • Page 39 402S OPERATION Don’t cut with the saw overhead or aligned vertically with your body. If the saw should kickback, you may not have enough control to prevent possible injury. Shown with optional Kick Guard Bucking Uphill Position Bucking is the sawing of a log or fallen tree into smaller pieces.

  • Page 40: Chain And Guide Bar Combination

    OPERATION 402S Chain And Guide Bar Combination The following combinations are recommended for your chain saw. Guide Bar Saw Chain ECHO Part No. Length mm (in.) Pitch mm (in.) Type Links Low-kickback 305 (12) 12A0CD3745 9.53 (3/8) 91PX / 91VG 356 (14) 14A0CD3752 9.53 (3/8)

  • Page 41: Saw Chain

    (safety requirements for gasoline-powered chain saws). Optional Kick Guards 2894902 for ECHO models CS-271- CS-400 2893202 for ECHO models CS-450 - CS-800P 2894902 for Shindaiwa models 305s, 340s, 358TS, 402s 2893202 for Shindaiwa models 491s, 591, 600SX. X7503256302 © 09/19 ECHO Incorporated...

  • Page 42: 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 For information about maintenance kits. X7503256302 © 09/19 ECHO Incorporated...

  • Page 43: Maintenance Intervals

    402S MAINTENANCE Maintenance Intervals REQ’D COMPONENT / SYSTEM MAINTENANCE PROCEDURE SKILL LEVEL Daily or Before Use Air Filter Inspect / Clean * Automatic Oiler Inspect / Adjust Oil Filter Inspect Fuel System Inspect Guide Bar & Sprocket Nose Inspect / Clean * Saw Chain Inspect / Sharpen / Replace / Ten- sioning *...

  • Page 44: Carburetor Adjustment

    MAINTENANCE 402S MAINTENANCE PROCEDURE NOTES: 1 Low evaporative fuel tanks DO NOT require regular maintenance to maintain emission integrity. 2 Model dependent * Replacement is recommended based on the finding of damage or wear during inspection. Carburetor Adjustment Every unit is run at the factory and the carburetor is set in compliance with Emission Regulations.

  • Page 45: Air Filter

    402S MAINTENANCE When carburetor adjustment is completed, the saw chain should not move at idle, otherwise serious personal injury may result. Accelerate to full throttle for 2 - 3 seconds to clear any excess fuel in the engine, then return to idle. Accelerate engine to full throttle to check for smooth transition from idle to high speed.

  • Page 46: Check Fuel System

    MAINTENANCE 402S Check Fuel System • Check before every use. • After refueling, make sure fuel does not leak from around fuel pipe, fuel grommet or fuel tank cap. • In case of fuel leakage there is a danger of fire. Stop using the machine immediately and request your dealer to inspect or replace.

  • Page 47: Automatic Oiler

    402S MAINTENANCE Automatic Oiler • The discharge volume of the Increase automatic oiler is adjusted to Decrease approximately 4 mL/min at 7000 r/ min, prior to shipment from factory. • Always check oil discharge when in use. • Turn adjusting screw (A) counterclockwise to increase oil volume, clockwise to decrease oil volume.

  • Page 48: Sprocket

    MAINTENANCE 402S Sprocket Worn: 0.5 mm (0.020 in.) • A damaged sprocket will cause premature damage or wear of saw chain. • When the sprocket has worn 0.5 mm (0.020 in.) or more, replace it. • Check sprocket when you install new chain. Replace it if worn. Some tree sap and resins are corrosive.

  • Page 49: Spark Arrestor Screen

    402S MAINTENANCE Spark Arrestor Screen Carbon deposits in muffler will cause drop in engine output and overheating. Spark arrestor screen must be checked periodically. Remove air cleaner cover and remove spark plug lead. Remove spark arrestor cover (C) and screen (B) from muffler (A) body.

  • Page 50: Setting The Saw Chain

    MAINTENANCE 402S Use a wood or plastic scraping tool to clean deposits from cylinder exhaust port. Install muffler. Tighten muffler mounting bolts (or nuts) to 8-11 N•m (70-95 in•lbf). Install engine cover and attach spark plug lead. Replace air cleaner cover. Start engine, and allow unit to warm up at idle for several minutes.
  • Page 51 402S MAINTENANCE • Drive link serves to remove sawdust from the groove of the guide bar. Keep the lower edge of the drive link sharp where indicated. Setting Saw Chain Sharpen lower edge • For setting saw chain, round file (4.0 mm [5/32 in.] diam.) and flat file are used.
  • Page 52 MAINTENANCE 402S • Properly filed cutters are shown in illustration. • When setting of the chain is 55° finished, soak it in oil and wash away filings completely before using. 30° Top plate Side plate angle filing angle • When chain has been filed on 0.64 mm (0.025 in.) the bar, supply sufficient oil to it, move the chain slowly to wash...

  • Page 53: Troubleshooting

    402S TROUBLESHOOTING TROUBLESHOOTING ENGINE PROBLEM TROUBLESHOOTING CHART Problem Check Status Cause Remedy Fuel strainer or Clean or replace Fuel at No fuel at fuel line carburetor carburetor See your dealer obstructed No fuel at Carburetor See your dealer cylinder OPEN choke Fuel at Clean or replace Engine...
  • Page 54 TROUBLESHOOTING 402S ENGINE PROBLEM TROUBLESHOOTING CHART Problem Check Status Cause Remedy Air filter Air filter Normal wear Clean or replace dirty Contaminants Fuel filter Replace filter or Fuel filter or residue in dirty replace fuel fuel Engine runs, but Fuel vent Contaminated Fuel vent Clean or replace...

  • Page 55: Storage

    402S STORAGE STORAGE Storage After Use • Inspect and adjust every part of the chain saw. • Completely clean every part and repair if necessary. • Apply thin coating of oil on metal parts to prevent rust. • Remove chain and guide bar. •...

  • Page 56: Specifications

    SPECIFICATIONS 402S SPECIFICATIONS Model 402s Length 393 mm (15.5 in.) Width with aluminum handle, 245 mm (9.6 in.) Width with plastic handle 243mm (9.56 in) Height 277 mm (10.9 in.) Dry weight 4.6 kg (10.1 lb.) Without chain and guide bar Engine Air-cooled two-stroke single cylinder Displacement...
  • Page 57 402S SPECIFICATIONS Model 402s Front hand guard, Rear hand guard, Anti-vibration Standard features device, Spiked bumper, Throttle control lockout, Chain catcher, Spark arrestor muffler, Tip guard * Technical data subject to change without notice. X7503256302 © 09/19 ECHO Incorporated...

  • Page 58: Product Registration

    PRODUCT REGISTRATION Thank you for choosing Shindaiwa Power Equipment 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, Inc. 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 59 402S PRODUCT REGISTRATION X7503256302 © 09/19 ECHO Incorporated...
  • Page 60 C69915001001 - C69915999999 ECHO INCORPORATED 400 Oakwood Road Lake Zurich, IL 60047 -usa www.shindaiwa .com...

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