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Echo SRM - 280U Operator's Manual - page 28
28
X7502310910
© 3/2015 ECHO Inc.
SRM-280U
MAINTENANCE
Cooling System
Level 2.
To maintain proper engine operating temperatures, cooling air must pass freely through the cylinder fin area.
This flow of air carries combustion heat away from the engine.
Overheating and engine seizure can occur when:
• Air intakes are blocked, preventing cooling air from reaching
the cylinder.
• Dust and grass build up on the outside of the cylinder. This
build up insulates the engine and prevents the heat from
leaving.
Removal of cooling passage blockages or cleaning of cooling
fins is considered “Normal Maintenance.” Any failure attributed
to lack of maintenance is not warranted.
1. Remove spark plug lead.
2. Remove air cleaner cover.
3. Remove muffler cover (A).
4. Remove engine cover (B).
DO NOT use a metal scraper to remove dirt from the cylinder fins.
5. Use brush to remove dirt from the cylinder fins.
6. Remove grass and leaves from the grid between the recoil
starter and fuel tank.
7. Assemble components in reverse order.
Parts Required:
None if you are careful.
A
B
Summary of SRM - 280U
Page 1
Specifications, descriptions and illustrative material in this literature are as accurate as known at the time of publication, but are subject to change without notice. Illustrations may include optional equipment and accessories, and may not include all standard equipment. Operator’s manual x750231...
Page 2: Table of Contents
2 x7502310910 © 3/2015 echo inc. Srm-280u table of contents table of contents table of contents........................................................................................................................................................ 2 introduction ........................................
Page 3: Introduction
X7502310910 3 © 3/2015 echo inc. Srm-280u introduction introduction 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 will find both easy to use and full of helpful...
Page 4: Safety
4 x7502310910 © 3/2015 echo inc. Srm-280u safety additional or replacement manuals replacement operator, safety manuals, and parts catalogs are available from your echo dealer or at www.Echo-usa.Com or by contacting echo inc., 400 oakwood road, lake zurich, il 60047 (800-673-1558). Always check the ...
Page 5
X7502310910 5 © 3/2015 echo inc. Srm-280u safety international symbols symbol description symbol description symbol description symbol description warning, see operator’s manual carburetor adjustment - high speed mixture do not allow flames or sparks near fuel ignition on / off wear eye, ear and hea...
Page 6
6 x7502310910 © 3/2015 echo inc. Srm-280u safety personal condition and safety equipment users of this product risk injury to themselves and others if the unit is used improperly and/or safety precautions are not followed. Proper clothing and safety gear must be worn when operating unit. Physical co...
Page 7
X7502310910 7 © 3/2015 echo inc. Srm-280u safety • do not operate unit barefooted. Keep long hair away from engine and air intake. Retain hair with cap or net. Heavy protective clothing can increase operator fatigue, which may lead to heat stroke. Schedule heavy work for early morning or late aftern...
Page 8
8 x7502310910 © 3/2015 echo inc. Srm-280u safety repetitive stress injuries (rsi) 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...
Page 9
X7502310910 9 © 3/2015 echo inc. Srm-280u safety avoid hot surfaces • keep exhaust area clear of flammable debris. Avoid contact during and immediately after operation. Equipment use only echo attachments. Serious injury may result from the use of a non-approved attachment combination. Echo, inc. Wi...
Page 10
10 x7502310910 © 3/2015 echo inc. Srm-280u emission control (exhaust & evaporative) emission control (exhaust & evaporative) carb and epa emissions control information the emission control system for the engine is em (engine modification) and, if the second to last character of the engine family on ...
Page 11: Description
X7502310910 11 © 3/2015 echo inc. Srm-280u description description locate the safety decal(s) on your unit. Make sure the decal(s) is legible and that you understand and follow the instructions on it. If a decal cannot be read, a new one can be ordered from your echo dealer. See parts ordering instr...
Page 12
12 x7502310910 © 3/2015 echo inc. Srm-280u description 1. Power head - includes the engine, clutch, fuel system, ignition system and recoil starter. 2. Throttle trigger lockout - this lever must be held during starting. Operation of the throttle trigger is prevented unless throttle trigger lockout l...
Page 13: Contents
X7502310910 13 © 3/2015 echo inc. Srm-280u contents contents 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...
Page 14: Assembly
14 x7502310910 © 3/2015 echo inc. Srm-280u assembly assembly plastic shield installation (nylon line operation) the plastic shield is for use with the nylon line head only. Install metal shield when using plastic or metal blades, or serious injury may result. 1. Align hole in upper plate (a) with no...
Page 15
X7502310910 15 © 3/2015 echo inc. Srm-280u assembly 3. Thread line head (j) onto pto shaft by turning it counterclockwise until head is tight against upper plate (a). 4. Remove locking tool (g). Semi-automatic nylon line heads must be used only with plastic debris shield with cut-off knife. Using ny...
Page 16
16 x7502310910 © 3/2015 echo inc. Srm-280u assembly a. Align locking hole in upper plate with notch in edge of gear housing and insert head locking tool (g). B. Remove line head (j) by turning it clockwise until head is completely off of shaft. C. Remove locking tool (g). D. Remove three screws hold...
Page 17
X7502310910 17 © 3/2015 echo inc. Srm-280u assembly 4. Insert cotter pin (c) in hole in pto shaft, and bend pin legs around shaft counterclockwise to retain 10 mm nut. Never reuse a cotter pin - install a new cotter pin each time a blade is installed or replaced. 5. Remove locking tool (g). U-handle...
Page 18
18 x7502310910 © 3/2015 echo inc. Srm-280u assembly 5. Connect two (2) ignition stop leads (c,d) from throttle cable tubing to two (2) ignition leads (c,d) on engine. 6. Gather ignition wires and position behind air filter case. 7. Install air filter and cover. Balance and adjust unit 1. Loosen harn...
Page 19: Operation
X7502310910 19 © 3/2015 echo inc. Srm-280u operation operation 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 remo...
Page 20
20 x7502310910 © 3/2015 echo inc. Srm-280u operation blade selection the type of blade used must be matched to the type and size of material cut. An improper or dull blade can cause serious personal injury. Blades must be sharp. Dull blades increase the chance of kick-out and injury to yourself and ...
Page 21
X7502310910 21 © 3/2015 echo inc. Srm-280u operation note: in case of emergency, pull up on the quick release collar to disconnect the trimmer from the harness. Fuel diesel fuels and alternative fuels, such as e-15 (15% ethanol), e-85 (85% ethanol) or any fuels not meeting echo requirements are not ...
Page 22
22 x7502310910 © 3/2015 echo inc. Srm-280u operation • do not overfill fuel tank. Wipe up spills immediately. • securely tighten fuel tank cap and close fuel container after refueling. • inspect for fuel leakage. If fuel leakage is found, do not start or operate unit until leakage is repaired. • mov...
Page 23
X7502310910 23 © 3/2015 echo inc. Srm-280u operation starting cold engine the attachment will operate immediately when the engine starts, and could result in possible serious injury. Keep movable parts of the attachment away from objects that could become entangled or thrown, and surfaces that could...
Page 24
24 x7502310910 © 3/2015 echo inc. Srm-280u operation starting warm engine the starting procedure is the same as cold start except do not close the choke, and do not hold throttle trigger fully depressed. The attachment should not move at idle, otherwise serious personal injury may result. Note: if a...
Page 25: Maintenance
X7502310910 25 © 3/2015 echo inc. Srm-280u maintenance maintenance 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 ...
Page 26
26 x7502310910 © 3/2015 echo inc. Srm-280u maintenance air filter level 1. 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. 2. Remove air filter cover and air filter retainer...
Page 27
X7502310910 27 © 3/2015 echo inc. Srm-280u maintenance fuel filter level 1. Fuel is very flammable. Use extreme care when mixing, storing or handling, or serious personal injury may result. 1. Use a clean rag to remove loose dirt from around fuel cap and empty fuel tank. 2. Pull the fuel filter from...
Page 28
28 x7502310910 © 3/2015 echo inc. Srm-280u maintenance cooling system level 2. To maintain proper engine operating temperatures, cooling air must pass freely through the cylinder fin area. This flow of air carries combustion heat away from the engine. Overheating and engine seizure can occur when: •...
Page 29
X7502310910 29 © 3/2015 echo inc. Srm-280u maintenance exhaust system spark arrestor screen level 2. 1. Remove spark plug lead. 2. Remove muffler cover (a). 3. Place piston at top dead center (tdc) to prevent carbon/dirt from entering cylinder. 4. Remove spark arrestor screen cover (b), gaskets (c),...
Page 30
30 x7502310910 © 3/2015 echo inc. Srm-280u maintenance carburetor adjustment level 2. 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 ...
Page 31
X7502310910 31 © 3/2015 echo inc. Srm-280u maintenance gear housing 1. Clean all loose debris from gear case. 2. Remove plug (a) and check level of grease. 3. Add grease if necessary. Do not over-fill. Drive shaft (flex cable models) 1. Loosen two (2) screws (b) and remove center locating screw (c)....
Page 32
32 x7502310910 © 3/2015 echo inc. Srm-280u maintenance nylon line replacement wear gloves or personal injury may result: • cutoff knife is sharp. • gearcase and surrounding area may be hot. 1. Cut one piece of line to recommended length. 2.0 mm (.080) diam. – 6 m (20 ft.) 2.4 mm (.095) diam. – 6 m (...
Page 33
X7502310910 33 © 3/2015 echo inc. Srm-280u maintenance 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 sharpeni...
Page 34: Troubleshooting
34 x7502310910 © 3/2015 echo inc. Srm-280u troubleshooting troubleshooting fuel vapors are extremely flammable and may cause fire and/or explosion. Never test for ignition spark by grounding spark plug near cylinder plug hole, otherwise serious personal injury may result. Engine problem troubleshoot...
Page 35: Storage
X7502310910 35 © 3/2015 echo inc. Srm-280u storage storage 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. Lo...
Page 36: Specifications
36 x7502310910 © 3/2015 echo inc. Srm-280u specifications specifications this spark ignition system complies with the canadian standard ices-002. Model srm-280u length 1805 mm (71.1 in.) width 700 mm (27.5 in.) height 515 mm (20.3 in.) weight (dry) w/cutter head 6.38 kg (14.1lb.) engine type air coo...
Page 37: Warranty Statements
X7502310910 37 © 3/2015 echo inc. Srm-280u warranty statements 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 fro...
Page 38
38 x7502310910 © 3/2015 echo inc. Srm-280u warranty statements echo does not offer an over the counter exchange program. Any echo product re-built other than by echo or sold through an unauthorized dealer, or an unauthorized outlet store, is sold without echo’s limited warranty coverage. The echo li...
Page 39: Product Registration
X7502310910 39 © 3/2015 echo inc. Srm-280u product registration product registration thank you for choosing echo power equipment please go to http://www.Echo-usa.Com/warranty/register-your-echo to register your new product on-line. It's fast and easy! Note: your information will never be sold or mis...
Page 40: Notes
40 x7502310910 © 3/2015 echo inc. Srm-280u notes notes.
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X7502310910 41 © 3/2015 echo inc. Srm-280u notes.
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42 x7502310910 © 3/2015 echo inc. Srm-280u notes.
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X7502310910 43 © 3/2015 echo inc. Srm-280u notes.
Page 44
Echo, incorporated 400 oakwood road lake zurich, il 60047 www.Echo-usa.Com 44 s82513007613/s82513999999.