Chain Saw Instruction Manual MODEL : CS-303T WARNING Users of this equipment risk injury to themselves and others if the unit is used improperly and/or safety precautions are not followed. ECHO provides an operator’s manual and a safety manual. Both must be read and understood for proper and safe operation. Failure to do so could result in serious injury.
Table Of Contents Packing List..................................................................................................................3 Rules for Safe Operation......................................................................................4 SYMBOLS AND SIGNS....................................................................................................8 Decals............................................................................................................................
Packing List The ECHO product you purchased has been factory pre-assembled for your convenience. Due to packaging restrictions, guide bar and saw chain installation and other assembly may be necessary. After opening the carton, check for damage. Immediately notify your retailer or ECHO Dealer of damaged or missing parts. Use the contents list to check for missing parts.
Rules for Safe Operation Kickback Safety Precautions for Chain Saw Users WARNING! 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. Rotational kickback Tip contact in some cases may cause a lightning fast reverse REACTION, Kicking the guide bar up and back towards the operator. Pinching the saw chain along the top of the guide bar may push the guide bar rapidly back towards the operator.
CORRECT USE OF CHAIN BRAKE Chain brake function When the lever is pushed forward, chain brake instantly stops the chain. CHAIN BRAKE OPERATION • Set the lever in the unlocked position before starting to cut. • 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 engine with the brake locked.
Other Safety Precautions 1. 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. 2. Do not operate a chain saw when you are fatigued. 3. Use safety footwear, snug-fitting clothing and protective gloves. Wear eye, hearing, and head protection devices. 4. Use caution when handling fuel.
VIBRATION AND COLD OPERATOR 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 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.
SYMBOLS AND SIGNS Symbol form/shape STOP Symbol description/application WARNING!! Read and follow all safety precaution in the instruction manual. Failure to follow instructions could result in serious personal injury.
Decals REPLACEMENT BAR AND CHAIN Note:There may be other replacement GUIDE BAR CHAIN components for achieving kickback PART NO. PART NO. protection. For details, please 12” 12A0CD3745 91PX45CQ refer to the chain and bar combination sheet shown in the instruction 14” 14A0CD3752 91PX52CQ Locate these safety decals on your unit. Make sure the decals are legible and that you understand and follow the instructions on them.
Nomenclature of Parts 1 15 6 2 8 11 9 4 5 18 17 21 16 3 20 7 10 12 13 14 1. Chain brake locking lever/ Hand guard 2. Throttle control lockout 3. Throttle trigger 4. Sprocket guard 5. Chain catcher 6. Air cleaner cover 7. Purge bulb 8. Guide bar 9. Saw chain 10. Choke Knob 10 19 11. On / Off switch 12. Fuel tank cap 13. Pull starter 14. Oil tank cap 15. Throttle lock button 16. Kick Guard 17. Catalytic muffler 18. Lanyard ring 19. Spark Plug 20.
Preparation for Use kick guard® to bar instructions warning Saw Chain is sharp! Always wear gloves when handling assembly, otherwise serious personal injury may result. For saws with Kick Guard® P/N 2894901 and symmetrical or asymmetrical low-kick type guide bars. 1. Install bolt (A) in rear hole (B) of Kick Guard® and through front hole (C) in guide bar. 2. IMPORTANT: Dimple in Kick Guard® (D) must engage recess in guide bar (E). 3. Tighten nut (F) and bolt (A) until snug.
adjustment, chain tension IMPORTANT Always loosen guide bar nuts before turning chain tension adjuster, otherwise clutch cover and tensioner will be damaged. L 1. Remove spark plug lead. 2. Loosen two guide bar nuts, if necessary. 3. Hold the bar nose up, and turn the adjuster screw (L) clockwise until chain fits snugly against underside of bar. 4. Tighten both guide bar nuts with bar nose held up. 5. Pull the saw chain around the guide bar by hand. Reduce chain tension, if you feel tight spots. 6.
Handling Fuel Fuel Mix Chart 50:1 DANGER Fuel is VERY flammable. Use extreme care when mixing, storing or handling or serious personal injury may result. • Use an approved fuel container. • DO NOT smoke near fuel. • DO NOT allow flames or sparks near fuel. • Fuel tanks/cans may be under pressure. Always loosen fuel caps slowly allowing pressure to equalize. • NEVER refuel a unit when the engine is HOT or RUNNING! • DO NOT fill fuel tanks indoors. ALWAYS fill fuel tanks outdoors over bare ground.
OPERATION WARNING 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. WARNING Engine exhaust IS HOT, and contains Carbon Monoxide (CO), a poison gas. Breathing CO can cause unconsciousness, serious injury, or death. Exhaust can cause serious burns.
when engine is hard to start D warning Clutch engages and chain may rotate when engine is started with throttle lock button engaged. Do not start engine before chain brake is locked. 1. Ensure that there is fuel and chain oil in the tanks. 2. Move chain brake lever fully forward to lock chain brake before starting. 3. Lay unit on a flat, clear area and keep bar and chain clear of all obstacles. 4. Press throttle control lockout down, squeeze throttle trigger, and push in throttle lock button (D). 5.
starting warm engine 1. Ensure that there is fuel and chain oil in the tanks. (If fuel tank was emptied during previous operation, refill tank and push purge bulb 10 times.) 2. Move chain brake lever fully forward to lock chain brake before starting. 3. Lay unit on a flat, clear area and keep bar and chain clear of all obstacles. 4. Turn switch (A) to “RUN” position (I). 5. Pull starter handle. 6. Choke may be used if necessary, but be sure to push it back on first firing sound.
Cutting Instructions warning Read the ECHO “CHAIN SAW SAFETY MANUAL” included with your chain saw for additional cutting and safety instructions. Failure to obey all instructions may result in serious or fatal injuries. In all circumstances the operation of the chain saw is a one-man job. It is difficult at times to take care for your own safety, so don’t assume the responsibility for a helper as well.
FELLING A TREE warning DIRECTION OF FALL A falling tree can seriously damage anything it may hit - a car, a house, a fence, a power line, or another tree. There are ways to make a tree fall where you want it, so first decide where that is! 45° Direction of fall First cut Notch Second cut One-third tree diameter Hinge 2” Felling cut 2” Before cutting, clear the area around the tree. You will need good footing while working and you should be able to work the saw without hitting any obstacles.
Don’t cut with the saw overhead or the bar in a vertical position. If the saw should kick back you may not have good enough control to prevent possible injury. Bucking is the sawing of a log or fallen tree into smaller pieces. There are a few basic rules which apply to all bucking operations. BUCKING Keep both hands on the handles at all times. Support logs if possible. When cutting on a slope or hillside, always stand uphill.
Chain and Guide Bar Combinations The following combinations may be used on CS-303T. LOW KICKBACK GUIDE BAR LOW KICKBACK SAW CHAIN LENGTH BAR P/N CHAIN P/N LINKS 12 in 12A0CD3745 91PX45CQ 91VG45CQ 45 91PX52CQ 91VG52CQ 52 14 in 14A0CD3752 TYPE KICK GUARD PITCH GAUGE 91PX 91VG 3/8” 0.
Maintenance and Care WARNING 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. Allow unit to cool before performing service. Wear gloves to protect hands from sharp edges and hot surfaces. Your ECHO unit is designed to provide many hours of trouble free service.
CARBURETOR ADJUSTMENT Every unit is run at the factory and the carburetor is set in compliance with Emission Regulations. In addition, the carburetor is equipped with “H” (High Speed) and “L” (Low Speed) needle adjustment limiters that prevent settings outside acceptable limits. A B Engine Break-In New engines must be operated a minimum duration of two tanks of fuel break-in before carburetor adjustments can be made.
air filter A C 1. Close choke (A) (Cold Start Position [ ). This prevents dirt from entering the carburetor throat when the air filter is removed. Brush accumulated dirt from air cleaner area. 2. Remove air filter cover (B). Brush dirt from inside cover. 3. Remove air filter (C) and lightly brush debris from filter. Replace filter if it is damaged, fuel soaked, very dirty, or the rubber sealing edges are deformed. 4. If filter can be reused, be certain it: • Fits tightly in the air filter cavity.
guide bar and oil holes H G • • Clean after each use - Clean the grooves (G) of the guide bar with a small screwdriver. - Clean oil holes (H) with a wire. Reverse guide bar periodically. J sprocket Worn : 0.5 mm C • A damaged sprocket (C) will cause premature damage or wear of saw chain. • Clean sprocket, clutch and bar mount area before installation of bar. • Check sprocket when you install new chain. When outer diameter of sprocket is worn 0.5mm (.020”) or more, replace it.
cooling system cleaning SPARK ARRESTOR MUFFLER • The spark arrestor muffler controls the exhaust noise and prevents hot, glowing particles of carbon from leaving the muffler. • Make sure the spark arrestor screen is in good repair and properly seated in the muffler. • Certain internal combustion engines operated on forest, brush, and/or grass-covered areas in the states of Washington, Oregon, Idaho, California, Minnesota, New Jersey and Maine, are required to be equipped with a spark arrestor.
muffler spark arrestor IMPORTANT Carbon deposits in muffler will cause a drop in engine output and overheating. Spark arrestor screen must be checked periodically. 1. Remove muffler cover. 2. Remove spark arrestor screen cover, gaskets, and screen from muffler body. 3. Clean carbon deposits from muffler components. NOTE When cleaning carbon deposits, be careful not to damage the catalytic element inside muffler. 4. Replace screen if it is cracked, plugged, or has holes burned through. 5.
Setting The Saw Chain For setting saw chains, round file (4 mm: 5/32”) and flat file are used. • To keep correct position and correct angle, use the file holder. - Round file and flat file are available from your Echo Dealer. To sharpen other type chain, follow chain manufacturer’s instructions • File cutters as below.
Troubleshooting ENGINE PROBLEM TROUBLESHOOTING CHART Problem C h eck Fuel at carburetor Fuel at cylinder Engine cranks starts hard/ doesn't start Engine runs, but dies or does not accelerate properly Status C au se no fuel at carburetor Fuel strainer clogged Fuel line clogged Carburetor Remedy Clean or replace Clean or replace see your Echo dealer no fuel at cylinder Carburetor see your Echo dealer Muffler wet with fuel Fuel Mixture too rich Open choke Clean/replace air filter adjust carburetor
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. • Drain fuel tank completely. Press purge bulb 6 - 7 times to remove remaining fuel from carburetor then drain the tank again. Close choke, start and run the engine until it stops due to lack of fuel. • Allow engine to cool then remove the spark plug and pour 7 cc (1/4 oz.
Technical Data Model.............................................................................................. CS-303T Dimension L x W x H...................................................................... 260 x 235 x 220 mm (10.2 x 9.3 x 8.7 inch) Weight Power head, dry................................................................. 3.5 kg (7.7 lb) Without chain and guide bar Engine..................................................... Type...............................
Warranty Statements ECHO LIMITED WARRANTY STATEMENT FOR PRODUCT SOLD IN USA AND CANADA BEGINNING 01/01/2010 ECHO'S RESPONSIBILITY ECHO incorporated’s Limited Warranty, provides to the original purchaser that this ECHO product is free from defects in material and workmanship.
PURCHASED REPAIR PARTS, SHORT BLOCKS AND ACCESSORIES • 90-day residential, or non-income producing warranty • 30-day commercial, institutional, agricultural, industrial, income producing, or rental application warranty ATTENTION TWO-STROKE ENGINE POWER PRODUCT OWNERS this ECHO two-stroke engine power product is a quality-engineered unit which has been manufactured to exact tolerances to provide superior performance.
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Servicing Information parts/serial number Genuine ECHO Parts and ECHO REPOWER™ Parts and Assemblies for your ECHO products are available only from an Authorized ECHO Dealer. When you do need to buy parts always have the Model Number, Type and Serial Number of the unit with you. You can find these numbers on the engine housing. For future reference, write them in the space provided below. Model No. ___________ Type _________SN.
