Chain Saw Instruction Manual MODEL CS-306 WARNING DANGER Read rules for safe operation and instructions carefully. ECHO provides an Instruction Manual and a Safety Manual. Both must be read and understood for proper and safe operation.
RULES FOR SAFE OPERATION A. Kickback Safety Precaution 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. 1. With a basic understanding of kickback, you can reduce or eliminate the element of surprise. Sudden surprise contributes to accidents. 2.
7. Keep all parts of your body away from the saw chain when the engine is running. 14. Keep the handles dry, clean, and free of oil or fuel mixture. 8. Before you start the engine, make sure that the saw chain is not contacting anything. 15. Operate the chain saw only in well-ventilated areas. 9. Carry the chain saw with the engine stopped, the guide bar and saw chain to the rear, and the muffler away from your body. 16.
CONTENTS Page Rules for Safe Operation .................................................................................................. 2 Technical Data ................................................................................................................. 5 Emission Data ................................................................................................................. 6 Description ...................................................................................................
TECHNICAL DATA CS-306 Model Dimension LxWxH Weight Power head, dry mm 380 x 235 x 220 inch 14.9 x 9.2 x 8.7 kg 3.4 (7.5 lb) Without chain and guide bar Engine Type Air-cooled, two-stroke, single cylinder Displacement ml 30.1 (1.83 cu.in.) Carburetor Diaphragm type Magneto Spark Plug Starter Power transmission Fuel Power Blend TM Premium Universal 2-Stroke Oil 89 octane unleaded. Do not use fuel containing methyl alcohol, more than 10% ethyl alcohol or 15% MTBE.
EMISSION DATA EMISSION CONTROL EPA Phase 2/California Tier 2 The emission control system for these engines are EM (Engine Modification and Catalyst). IMPORTANT ENGINE INFORMATION ENGINE FAMILY: 6EHXS.0334RA DISPLACEMENT: 30.1 CC EMISSION COMPLIANCE PERIOD: 300 HOURS THIS ENGINE MEETS U.S. EPA PH2 AND 2005 - 2006 CALIFORNIA EMISSION REGULATIONS FOR SOREs. REFER TO OWNER'S MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS. An Emission Control Label is located on the engine.
NOMENCLATURE OF PARTS CS-306 1 2 13 3 10 9 4 CS-3 06 11 6 5 7 8 20 P/N X505002060 12 P/N 89011439434 18 WARNING ! ! 13 Read and follow all safety precautions in the Instruction manual. Failure to follow instructions could result in serious personal injury. CHAIN SAW 87G1 14 IN ACCORDANCE WITH AMERICAN NATIONAL STANDARD SAFETY REQUIREMENTS FOR GASOLINE POWERED CHAIN SAWS (ANSI B175.1-2000) 15 19 P/N 89016006361 P/N 89019130131 17 TO AVOID KICKBACK 1.
PREPARATION FOR USE KICK GUARD® TO BAR INSTRUCTIONS 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. Make certain Kick Guard® is flush against guide bar.
ADJUSTMENT, CHAIN TENSION IMPORTANT Always loosen guide bar nuts before turning chain tension adjuster, otherwise clutch cover and tensioner will be damaged. 1. Remove spark plug lead. 2. Loosen two guide bar nuts (I), if necessary. 3. Hold the bar nose up, and turn the adjuster screw (L) clockwise until the chain touches the bottom of the bar. 4. Tighten both guide bar nuts with bar nose held up. L IMPORTANT! Tighten guide bar nuts to 90 – 110 kgf/cm (80 – 95 in. lbs.) DO NOT over-tighten nuts.
Fuel Mix Chart 50:1 IMPORTANT Echo premium Power BlendTM Universal 2-Stroke Oil may be mixed at 50:1 ratio for application in all Echo engines sold in the past regardless of ratio specified in those manuals. Handling Fuel WARNING 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.
OPERATION WHEN THE ENGINE IS COLD WARNING DANGER Make sure bar and chain are not touching anything when starting the saw. 1. Move chain brake lever fully forward to engage chain brake before starting. 2. Fill the fuel tank with fuel. Do not over fill. 3. Fill the chain oil tank with lubricant. Do not over fill. 4. Turn switch (A) to “RUN” position (I). 5. Pull choke (B) all the way out (closed position). 6. Push purge bulb (C) 10 times. 7.
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 engage chain brake before starting. 3. Turn switch (A) to “RUN” position (I). 4. Pull starter handle. 5. Choke may be used if necessary, but be sure to push it back on first firing sound. NOTE If engine does not start after 5 pulls, use cold start procedure.
CUTTING INSTRUCTIONS GENERAL WARNING DANGER 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 oneman 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 DANGER A falling tree can cause serious injury or 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! 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. Next, select a path of retreat.
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. Keep both hands on the handles at all times. Support logs if possible. Uphill position When cutting on a slope or hillside, always stand uphill.
MAINTENANCE AND CARE Your ECHO unit is designed to provide many hours of trouble free service. Regular scheduled maintenance will help your unit achieve that goal. If you are unsure or are not equipped with the necessary tools, you may want to take your unit to an ECHO Service Dealer for maintenance. To help you decide whether you want to DO-IT-YOURSELF or have the ECHO Dealer do it, each maintenance task has been graded. If the task is not listed see your Echo dealer for repairs.
AIR FILTER 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 • Follow instructions for “Guide Bar and Saw Chain – Install/Remove • Clean after each use - Clean the grooves (H) of the guide bar with a small screwdriver. - Clean oil holes (I) with a wire. • Reverse guide bar periodically. H I SPROCKET • Worn : 0.5 mm • J • A damaged sprocket (J) will cause premature damage or wear of saw chain. - When the sprocket has worn out 0.5mm (.020”) or more, replace it. Check sprocket when you install new chain. Replace it if worn.
COOLING SYSTEM CLEANING • Remove spark plug lead. • Remove two (2) muffler cover screws and muffler cover (A). • Remove four (4) recoil starter housing screws and starter housing (B). • Use a stiff bristle cleaning brush (do not us a metal brush) to remove dirt from cylinder fins in muffler and ignition coil areas. CS-306 A B 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. 2. 3.
CARBURETOR ADJUSTMENT Engine Break-In New engines must be operated a minimum duration of two tanks of fuel break-in before carburetor adjustments can be made. During the break-in period your engine performance will increase and exhaust emissions will stabilize. Idle speed can be adjusted as required. BEFORE MAKING ADJUSTMENTS: • The correct spark plug must be clean and properly gapped. • The air filter element must be clean and properly installed.
CHAIN AND GUIDE BAR COMBINATIONS The following combinations may be used on the CS-306. MODEL BAR LENGTH LOW KICKBACK GUIDE BAR BAR P/N KICK GUARD LOW KICKBACK SAW CHAIN CHAIN PART NO. LINKS TYPE PITCH GAUGE ECHO P/N OEM P/N 3/8" .043" 2894901 28949 3/8" .
SETTING THE SAW CHAIN For setting 90SG saw chains, round file 4.5 mm (11/64”) and flat file are used. For 91VG 4.0mm (5/32”). • To keep correct position and correct angle, use the file holder. - Round file and flat file are available from your Echo Dealer. • File cutters as below.
TROUBLESHOOTING Poor performance of the engine and/or cutting mechanism can normally be prevented by carefully following these instructions. Poor performance can easily be corrected even by a beginner. When the engine does not function properly check the following three (3) points first.
Improper fuel used ........................................ Use fuel with correct mixing ratio. Never use gasoline of poor quality. Table 2 Engine overheated Spark plug defective (worn) ........................... Replace. As cooling fins clogged, air does not pass well ........................................ Clean fins. Ouput (engine speed) insufficient Excessive deposits in combustion chamber ..................................... Disassemble and remove carbon.
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, pull starter slowly a few times to drain fuel from carburetor. • Pour a small amount of clean two-stroke oil into spark plug hole, pull starter and crank engine until the piston is at TOP DEAD CENTER. • Store in a dry area, free from dust.
Kickback Motion: Function: • • When the bar nose hits another tree, etc. When the lever is pushed forward, chain brake instantly works to stop the chain. Release: • • Improper thrust cutting. When the lever is fully pulled toward the operator, brake is released. INSTALLATION TESTING THE BRAKE • • Start the engine on a solid level surface and run at a fast idle until warm. • Hold the saw firmly by the handles and accelerate the engine to a fast idle.
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SERVICING INFORMATION PARTS/SERIAL NUMBER Genuine ECHO Parts and ECHO REPOWERTM 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 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. _____________ SN. __________ SERVICE DEALER? Call 1-800-432-ECHO or www.echo-usa.
