Echo Gas 20 In Blade Double Reciprocating Double Sided Hedge Trimmer SHC225 Logo

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Posted on Sep 02, 2017
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Trimmer idles great go to give it gas it bigs out. New spark plug new fuel line new carburetor I also took muffler off drilled small hole in honeycomb baffle and took little screen out. After drilling little hole it ran good for bout 5 mins. I took white cap off breather line took rubber piece out checked that but it still want work I need this for my job what else can I do?

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roeb

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  • Echo Master 819 Answers
  • Posted on Sep 03, 2017
roeb
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Have you tried adjusting fuel jets? Sounds as if the L or lo speed idle may need tweak.

3 Related Answers

#1 Taper

Jim Parker

  • 1041 Answers
  • Posted on Jul 03, 2009

SOURCE: i have echo 230 trimmer that runs on idle and wide

Use a Den Tek Brush, (http://www.drugstore.com/products/prod.asp?pid=165357&catid=1152), to clean the small portals in carb. These portals can become blocked. Reassemble and start.

If you need further assistance, just let me know.

Jim

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Anonymous

  • 506 Answers
  • Posted on Jun 29, 2011

SOURCE: HEDGE TRIMMER IS EASY TO START AND RUNS GREAT AT

You have two adjustment screws on the carb, one is for adjustment the mix at idle and the other under throttle conditions. You can tune the engine by ear. Refer to your manual for which screw is which. If you don't have it you can figure it out by letting the engine idle and give one of the screws a half turn (CC or CW doesn't matter) if that affects the idle condition readjust that screw back to the original position and proceed to adjust the other screw with the throttle full pressed. You will be able to hear the engine lean out or when it runs too rich, simply listen to the engine for when it starts to rev properly.

irtlmn

Behind_Blue_Eyes

  • 1727 Answers
  • Posted on Apr 14, 2015

SOURCE: So I replaced the carburetor, air and fuel filter, fuel lines, ignition coil, flywheel, carburetor gasket and clean the screen on the muffler, new spark plug and my Echo CS-400 chainsaw won't start

Air fuel and gas... It needs all of these

Are the crankshaft seals any good ??? This causes an air leak, leading to the engine not being able to draw in the air/fuel mixture
Check this by spraying carb cleaner into carb. Does it start ???
Did you check for spark ???
Did you set the coil gap ??? .010
Did you check compression ??? Someone mentioned 100psi. Close but most wont run under 90psi. Others need 120psi. Echo's will run under 90psi but not much lower
Did you remove the muffler and check the exhaust side of the piston ??? Scoring will keep it from running but I have seen them run, albeit poorly but still run with major scoring.
Is the spark arrestor still installed ??? Is it plugged ???

Just some of the tests I perform since I am an Echo/Shindaiwa Tech

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I’m happy to assist further over the phone at https://www.6ya.com/expert/rolandw_c013176d62ee17ae

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Gas 20 In Blade Double Reciprocating Double Sided Hedge Trimmer SHC225

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I have a craftsman model # 316.791020 will not start have replaced with new carburetor new module new spark plug cleaned muffler plenty of fire through plug fresh gas tried small amount of gas in cyl

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