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MODEL SRM - 251 SRM - 251E WARNING DANGER Read rules for safe operation and instructions carefully. ECHO provides an Operator's Manual and a Safety Manual. Both must be read and understood for proper and safe operation. X750007283 X7502021603 03/06...
NTRODUCTION Welcome to the ECHO family. This ECHO product was designed and manufactured to provide long life and on-the-job dependability. Read and understand this manual. You will find it easy to use and full of helpful operating tips and SAFETY messages.
RASS RIMMER RUSH UTTER PERATOR ANUAL AFETY 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.
Wear no-slip, heavy-duty work gloves to improve your grip on the handle. Gloves also reduce the transmission of machine vibration to your hands. Hearing Protection ECHO recommends wearing hearing protection whenever unit is used. Proper Clothing Wear snug fitting, durable clothing;...
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RASS RIMMER RUSH UTTER PERATOR ANUAL Repetitive Stress Injuries It is believed that overusing the muscles and tendons of the fingers, hands, arms, and shoulders may cause soreness, swelling, numbness, weakness, and extreme pain in those areas. Certain repetitive hand activities may put you at a high risk for developing a Repetitive Stress Injury (RSI).
Use only ECHO approved attachments. Serious injury may result from the use of a non-approved attachment combination. ECHO, INC. will not be responsible for the failure of cutting devices, attachments or accessories which have not been tested and approved by ECHO. Read and comply with all safety instructions listed in this manual and safety manual.
Locate these safety decals on your unit. Make sure the decals are legible and that you understand and follow the instructions on them. If a decal cannot be read, a new one can be ordered from your ECHO dealer. See PARTS ORDER- ING instructions for specific information.
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1. POWER HEAD - Includes the Engine, Clutch, Fuel System, Ignition System and Recoil Starter. 2. GRIP - Rear (right hand) handle. 3. THROTTLE TRIGGER LOCKOUT - This lever must be held during starting. Operation of the throttle trigger is prevented unless throttle trigger lockout lever is engaged.
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.
SSEMBLY Tools Required: Screwdriver, Head Locking Tool, 17x19mm T-Wrench Parts Required: Plastic Shield, Shield Plate, three (3) 5mm x 16mm screws, Nylon Line Head PLASTIC SHIELD INSTALLATION (For Nylon Line Operation) NOTE The plastic shield is for use with the Nylon Line Head only. 1.
RASS RIMMER RUSH UTTER PERATOR ANUAL FRONT HANDLE INSTALLATION SPACING NOTE Label shows minimum spacing for front handle location. Position front handle for comfortable operation and secure screws.
Echo premium Power Blend Universal 2-Stroke Oil may be mixed spillage. at 50:1 ratio for application in all Echo engines sold in the past regardless of ratio specified in those manuals. After use • DO NOT store a unit with fuel in its tank.
RASS RIMMER RUSH UTTER PERATOR ANUAL STARTING COLD ENGINE WARNING DANGER The attachment will operate immediately when the engine starts and could result in loss of control and possible serious injury. Keep movable parts of the attachment off the ground and away from objects that could become entangled or thrown.
The attachment should not move at idle, otherwise serious personal injury may result. NOTE If attachment moves, readjust carburetor according to “Carburetor Adjustment” instructions in this manual or see your ECHO Dealer. 1. Stop Switch Move stop switch button (A) away from the STOP position. 2. Purge Bulb Pump purge bulb (C) until fuel is visible and flows freely in the clear fuel tank return line.
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 task is not listed, see your ECHO Dealer for repairs.
AIR FILTER Level 1. Tools Required: Cleaning brush 25 or 50 mm (1 or 2 in.) Parts Required: 90008 REPOWER AIR & FUEL FILTER KIT. 1. Close choke (Cold Start Position [ ]). This prevents dirt from entering the carburetor throat when the air filter is removed. Brush accumulated dirt from air cleaner area.
Tools Required: Cross Head Screwdriver, Soft Metal Brush, 4 mm Hex Wrench Parts Required: Spark Arrestor Screen, Gasket SRM-251E 1. Remove spark plug lead. 2. Remove one (1) muffler cover screw and muffler cover. 3. Place piston at Top Dead Center (TDC) to prevent carbon/dirt from entering cylinder.
The cylinder exhaust port must be inspected and cleaned of excess carbon every 3 months or 90 hours of operation in order to maintain this engine within the emissions durability period. ECHO strongly recommends that you return your unit to your ECHO dealer for this important maintenance service. CARBURETOR ADJUSTMENT...
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Before Adjustment Check that: • Air filter is clean and properly installed. • Spark arrestor screen and muffler are free of carbon. • Nylon line head with lines trimmed to 8 in. is installed. Initial Adjustment 1. With engine off, turn HI speed screw (C) counterclockwise to stop. 2.
PERATOR ANUAL LUBRICATION Level 1. Tools required: 8 & 13 mm Open End Wrench, Cross Head Screwdriver, Clean rag, Grease gun P/N 91016 Parts Required: ECHO LUBE 8 oz. (P/N 91014) or Lithium Base ® Grease. Gear Housing 1. Clean all loose debris from gear box.
NYLON LINE REPLACEMENT Level 1. Parts Required: ECHO 2.4mm (0.095 in.) Nylon Trimmer Line 12m (40 feet [two 20 ft. sections]) Echomatic Pro Trimmer Head 1. Do not push spool in. Hold drum and turn spool clockwise until peg clicks and disappears from hole. Pull spool out of drum.
RASS RIMMER RUSH UTTER PERATOR ANUAL ROUBLESHOOTING l i f l i f l i f l i f l i f t r i t r i WARNING DANGER Fuel vapors are extremely flammable and may cause fire and/or explosion. Never test for ignition spark by ground- ing spark plug near cylinder plug hole, otherwise serious personal injury may result.
TORAGE WARNING DANGER During operation the muffler or catalytic muffler and surrounding cover become hot. Always keep exhaust area clear of flammable debris during transportation or when storing, otherwise serious property damage or personal injury may result. Long Term Storage (over 30 days) Do not store your unit for a prolonged period of time (30 days or longer) without performing protective storage mainte- nance which includes the following: 1.
Height ------------------------------------------------------- 330 mm (13.0 in.) Weight (dry) w/Cutter Head (SRM-251) ---------------- 5.52 kg (12.2 lb.) Weight (dry) w/Cutter Head (SRM-251E) --------------- 5.42 kg (11.9 lb.) Engine Type ------------------------------------------------ Air cooled, two-stroke, single cylinder gasoline engine Bore ---------------------------------------------------------- 34.0 mm (1.34 in.) Stroke -------------------------------------------------------- 28.0 mm (1.10 in.)
• Purchasing from your Echo Dealer. • Manuals are available by sending a written request stating the model number and serial number of your Echo unit, part number of the manual, your name and address, and mail to the address below.