INSTRUCTION MANUAL CHAIN SAW CS-370 WARNING Read the instructions carefully and follow the rules for safe operation. Failure to do so could result in serious injury.
WARNING The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Copyright © 2005 All Rights Reserved.
RULES FOR SAFE OPERATION A. 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. 1.With a basic understanding of kickback, you can reduce or eliminate the element of surprise. Sudden surprise contributes to accidents. Tip contact in some cases may cause a lightning fast reverse REACTION, Kicking the guide bar up and back towards the operator.
B. 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 twohanded use. 11.Shut off the engine before setting the chain saw down. 2.Do not operate a chain saw when you are fatigued. 13.When cutting a limb that is under tension, be alert for spring-back so that you will not be struck when the tension in the wood fibers is released. 12.
CONTENTS RULES FOR SAFE OPERATION ............................................................................. NOMENCLATURE OF PARTS ................................................................................. OPERATOR SAFETY ............................................................................................... CORRECT USE OF CHAIN BRAKE ........................................................................ PREPARATION FOR USE ................................................................
NOMENCLATURE OF PARTS 4 3 5 1 6 14 7 2 8 9 10 11 12 13 X524-001640 890191-30131 Part Number X524-001640 REPLACEMENT BAR AND CHAIN X503-007040 GUIDE BAR* CHAIN* PART NO. TYPE LINKS 14” 14A0CD3752 OREGON 91P / 91VG 52 16” 16A0CD3757 OREGON 91P / 91VG 57 18” 18A0CD3762 OREGON 91P / 91VG 62 *Or equivalent Note: There may be other replacement components for achieving kickback protection. For details, please refer to the chain and bar combination sheet shoen in the operator’s manual.
NOMENCLATURE OF PARTS 1. Instruction manual - Included with unit. Read before operation and keep for future reference to learn proper, safe operating techniques. 13. Saw chain - Chain, serving as a cutting tool. 14. Bar tip guard - Anti-kickback device attached on the bar nose. 15. Cylinder cover - The cooling airflow grill. It covers the cylinder, spark plug and silencer. 2. Safety manual - Describe operating and safety instructions for this chain saw. 16.
OPERATOR SAFETY VIBRATION AND COLD EYE AND HEARING PROTECTION • 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.
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.
PREPARATION FOR USE WARNING Saw chain is sharp! Always wear gloves when handling assembly, otherwise serious personal injury may result. KICK GUARD® TO BAR INSTRUCTIONS Bolt (A) Dimple (D) Tools Needed: Two 11 mm (7/16 in.) Wrenches. For saws with Kick Guard® P/N 2893201 and Symmetrical Low-Kick type (Double Guard) guide bars. Kick Guard® 1. Install bolt (A) in rear hole (B) of Kick Guard® and through front hole (C) in guide bar. Rear hole (B) 2.
Clutch 4. Mount guide bar on studs and slide toward clutch to make saw chain installation easier. Install chain with cutters on top of guide bar facing foward. 5. Unlock the chain brake, and install the clutch cover over the guide bar studs. Ensure chain tension adjuster pin fits into the guide bar adjuster hole, brake band is positioned around clutch drum. Tighten clutch cover nuts finger tight. 6. Turn saw over, and check brake band for correct position on clutch drum.
FUEL AND LUBRICANT Fuel Mix Chart 50 : 1 (US) GAS Gal. 1 2 5 OIL US. fl. oz. 2.6 5.2 12.8 FUEL STATEMENT GASOLINE - Use 89 Octane [(R+M)/2] (mid grade or higher) gasoline or gasohol known to be good quality. Gasohol may contain up to 10 % Ethyl (grain) alcohol or 15 % MTBE (methyl teriary-butyl ether). Gasohol containing methyl (wood) alcohol is NOT approved.
CHAIN LUBRICANT CAP INDICATION Fuel/oil tanks are indicated by the following illustrations. FUEL TANK CAP 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. • Use bar and chain oil of high quality for this purpose. • Do not use used or reclaimed oil to avoid various oiler problems. • Use ECHO bar and chain oil. • When ECHO bar and chain oil is not available: Use motor oil, etc.
WHEN THE ENGINE IS HARD TO START Chain brake CAUTION Make sure the bar and chain are free from any obstruction when starting the chain saw. • Move chain brake lever fully forward to lock chain brake before starting. • Press throttle trigger lockout down while grasping throttle trigger and push in throttle latch. • Move ignition switch to “RUN” position. • Securely hold the chain saw as shown and pull starter handle.
RUNNING • When engine starts, keep idling for a few minutes. • Set the brake lever in the unlocked position before starting to cut. • Pull throttle trigger gradually and increase revolution of the engine. • The chain starts running when the engine reaches 3,800 r/min approximately. • Confirm proper acceleration and lubrication of chain and bar. • Do not run the engine at high speed unnecessarily. • Be sure that saw chain stops moving when throttle trigger is released.
CUTTING INSTRUCTION GENERAL CAUTION • Read the ECHO “CHAIN SAW SAFETY MANUAL” included with your chain saw for additional cutting and safety instructions. • Wear suitable hearing protection such as earmuffs or earplugs to protect against objectionable or uncomfortable loud noises. • 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.
FELLING THE TREE 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! 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.
LIMBING Limbing a fallen tree is much the same as bucking. Never stand on the tree that you are limbing. When limbing, caution is the word. Be careful of the tip touching other limbs. Always use both hands. 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. BUCKING 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.
CHAIN BRAKE OPERATION Kickback motion • 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. 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.
AUTOMATIC CHAIN BRAKE END OF THE GUIDE BAR may be placed at the height of about 35 cm. Kickback produced from the tip of the guide bar will trip the automatic chain brake. To make sure that the automatic chain brake operates properly, follow these steps: 1. Stop the engine. 2. Hold the saw with the guide bar approximately 35 cm above a wooden surface. Right hand should hold the rear handle, and left hand should hold the front handle. 3.
MAINTENANCE AND CARE CARBURETOR ADJUSTMENT Idle adjusting screw Low speed needle (L) 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. 1. Before adjusting carburetor clean or replace air filter and muffler “Spark Arrestor Screen”. 2. Make sure the bar and chain are properly adjusted. 3.
Cleaner cover knob AIR FILTER Air cleaner cover • Check before every use. • Loosen cleaner cover knob and remove air cleaner cover and filter. • Brush off dust lightly, or clean with compressed air, or replace the air filter. • Reinstall air filter and cover. Spark plug Air filter cover Air filter 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.
FUEL FILTER • Check periodically. • Do not allow dust to enter fuel tank. • A clogged filter will cause difficulty in starting engine or abnormalities in engine performance. • Pull the fuel filter out through fuel inlet port with a piece of steel wire or the like. • When the filter is dirty, replace it. • When the inside of the fuel tank is dirty, rinsing the tank out with gasoline can clean it. Oil filter Fuel filter Oil tank cap Fuel tank cap OIL FILTER • Check periodically.
SETTING THE SAW CHAIN Preset tie strap Left hand cutter Drive link Top plate Tie strap Side plate Guard link Depth guage Right hand cutter Important points for proper maintenance of saw chain: • Keep the cutters sharp at all times. • Keep the left and the right cutters properly aligned. - Note that blunt or irregular cutters will result in poor cutting performance, increased vibration of chains and premature breakage of the saw chain.
1/5 One fifth of file diameter remains above cutter edge • Place the depth gauge tool firmly on guide bar so that depth gauge protrudes. Then file top of depth gauge with the flat file until flat with top of the depth gauge tool. Depth gauge tool Remove until flat with tool - Be sure to round off the front edge of the depth gauge. Round off the edge Properly filed cutters are shown in illustration.
CHAIN AND GUIDE BAR COMBINATION The following combinations are recommended for model CS-370. Length mm (in.) Guide Bar ECHO Part No. Double Guard Pitch mm (in.) Saw chain Type (OREGON) Links 356 (14) 14A0CD3752 9.53 (3/8) 91P, 91VG 52 @ 406 (16) 16A0CD3757 9.53 (3/8) 91P, 91VG 57 457 (18) 18A0CD3762 9.53 (3/8) 91P, 91VG 62 @ Standard configuration GUIDE BAR Replacement guide bars. The following guide bars may be considered to have equivalent kickback energy.
MAINTENANCE Your ECHO chain saw is designed to provide many hours of trouble free service. Regular scheduled maintenance will help your chain saw 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 ask your ECHO dealer for repairs.
TROUBLESHOOTING Problem Engine Engine cranks — hard to start — does not start → Fuel at carburetor Spark at end of plug wire No fuel at carburetor • Fuel filter clogged • Fuel line clogged • Carburetor • Clean or replace • Clean • Ask your ECHO dealer → No fuel at cylinder • Carburetor • Ask your ECHO dealer → Muffler wet with fuel • Fuel mixture is too rich • Open choke • Clean/replace air filter • Adjust carburetor • Ask your ECHO dealer → No spark at end of plug wire • Ignition switch
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 motor oil into spark plug hole, pull starter and crank the engine until piston reaches: TOP DEAD CENTER. • Store in a dry area, free from dust.
MEMORANDUM CS-370 28
MEMORANDUM 29 CS-370
ECHO, INCORPORATED 400 Oakwood Road, Lake Zurich, Illinois 60047-1564 Phone : 847-540-8400 USA X750-008 59 0 X750 325-010 0 Printed in Japan 0605Mmb 0529 ES
