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Echo SRM-251SB Operator's Manual

Grass trimmer/brush cutter
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Grass Trimmer/Brush Cutter
Operator's Manual
MODEL
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.
X7502021901
SRM - 251SB
WARNING
DANGER
X750008081
11/05

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Summary of Contents for Echo SRM-251SB

  • Page 1 Grass Trimmer/Brush Cutter Operator's Manual MODEL SRM - 251SB 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. X750008081 X7502021901 11/05...
  • Page 2 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 and the SAFETY MANUAL you found in the same package. You will find both easy to use and full of helpful operating tips and SAFETY messages.
  • Page 3 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.
  • Page 4 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;...
  • Page 5 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).
  • Page 6 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.
  • Page 7 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.
  • Page 8 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.
  • Page 9 The ECHO product you purchased has been factory pre-assembled for your convenience. Due to packaging restrictions, shield 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.
  • Page 10 4. Rotate locator pin (A) 1/4 turn clockwise to engage lower shaft hole. Insure locator pin is fully engaged by twisting lower drive shaft. Locator pin should snap flush in coupler. Full engagement will prevent further shaft rotation. 5. Secure lower shaft assembly to coupler by tightening clamping knob (D).
  • Page 11 RASS RIMMER RUSH UTTER PERATOR ANUAL FRONT HANDLE BARRIER BAR INSTALLATION Tools Required: 4mm Hex Wrench Parts Required: Front Handle Assembly NOTE Label shows minimum spacing for front handle location. Front Handle with Barrier Bar: (Not recommended when using Power Pruner or Hedge Clipper Attachments) 1.
  • Page 12 The Barrier Bar is used to restrict rearward movement of the unit. For heavy-duty or extended use, U-handles should be used. See your Echo dealer or Trimmer/Brush Cutter Safety Manual for details regarding U-Handles. If you have additional questions, contact your Echo Service Dealer, or call Echo directly at 1-800-673-1558.
  • Page 13 RASS RIMMER RUSH UTTER PERATOR ANUAL Plastic/Nylon Blades may be used where ever the nylon line head is used. DO NOT use this blade for heavy weeds or brush! 8 Tooth Weed/Grass Blade P/N 69600120331 is designed for grass, garden debris and thick weeds. DO NOT use this blade for brush or heavy woody growth, 19 mm (3/4 in.) diameter or larger.
  • Page 14 Echo premium Power Blend Universal 2-Stroke Oil may be mixed may require the use of automatic fuel at 50:1 ratio for application in all Echo engines sold in the past shut-off containers to reduce fuel regardless of ratio specified in those manuals.
  • Page 15 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.
  • Page 16 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.
  • Page 17 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.
  • Page 18 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 the air filter area.
  • Page 19 RASS RIMMER RUSH UTTER PERATOR ANUAL SPARK PLUG Level 2. Tools Required: T-Wrench, feeler gauge, soft metal brush. Parts Required: REPOWER Tune-Up Kit P/N 90074 IMPORTANT Use only NGK BPM-8Y spark plug (BPMR-8Y in Canada) otherwise severe engine damage may occur. 1.
  • Page 20 1. Remove spark plug lead (A). Remove air filter cover (B). 3. Remove one (1) muffler cover screw and muffler cover (C). 4. Remove two (2) screws and engine cover (D). IMPORTANT DO NOT use a metal scraper to remove dirt from the cylinder fins. 5.
  • Page 21 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...
  • Page 22 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.
  • Page 23 1. Loosen two (2) screws (B) and remove center locating screw (C). Pull gear box and shield from drive shaft housing. 2. Pull flexible cable from the drive shaft housing, wipe clean and re-coat with a thin coating [15 ml (1/2 oz.)] of ECHO LUBE ®...
  • Page 24 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.
  • Page 25 PERATOR ANUAL SHARPENING METAL BLADES Three styles of metal blades are approved for use on the ECHO Brush Cutter. The 8-tooth blade can be sharpened during normal maintenance. The clearing blade and 80 tooth blade require professional service. Before sharpening, CLOSELY inspect blade for cracks (look at the bottom of each tooth and the center mounting hole closely), missing teeth and bending.
  • Page 26 ROUBLESHOOTING t l i l f f t l i t l i t l i t l i 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.
  • Page 27 RASS RIMMER RUSH UTTER PERATOR ANUAL TORAGE Long Term Storage (over 30 days) 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.
  • Page 28 Spark Plug -------------------------------------------------- NGK BPM-8Y Gap 0.65 mm (0.026 in.) Fuel ---------------------------------------------------------- Mixed (Gasoline and Two-stroke Oil) Fuel/Oil Ratio ----------------------------------------------- 50:1 ECHO High Performance, two-stroke air cooled engine oil Gasoline ----------------------------------------------------- 89 Octane unleaded. DO NOT use fuel containing methyl alcohol, more than 10% ethyl alcohol or 15% MTBE.
  • Page 29 Read and comply with all safety instructions listed in this manual and attachment manual. ECHO, INC. will not be responsible for the failure of cutting devices, attachments or accessories which have not been tested and approved by ECHO for use with these units.
  • Page 30 NOTES...
  • Page 31 RASS RIMMER RUSH UTTER PERATOR ANUAL NOTES...
  • Page 32 • 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.