Question about Echo 30.1CC Chainsaw With a 14 and Chain

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Change the throttle cable on echo cs-3450 chain saw

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Posted on Jan 02, 2017

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SOURCE: I have an Echo CS-3450 16" Chain saw that starts

This is classic fuel starvation, it needs to run a little rich when free running, when it goes under load it needs the extra fuel to keep it going, if you have replaced the fuel filter, and the fuel hoses are good ( no leaks, or cracks in the pipe, give the pipe a tug to see if fuel squirts out ) then there is dirt in the main fuel screen under the pump diaphram, remove the carb, remove the alloy pump cover, normally held with a single screw, under here will be a gasket, and a pump diaphram, in that order, pressed into the carb is a very fine screen, this should be replaced, or at least cleaned, check the condition of the diaphram, this should be supple not hardened, rebuild and try again, the H screw on the side of the carb controls fuel to the main jet, if need be increase ( screw out ) 1/4 turn.Somewhere from the tank will be a breather, this allows air into the tank to stop a vacume occuring, to check this slacken the filer cap when the machine starts to die, if it picks up again it is a breather issue.

Posted on Jul 18, 2011


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I have an Echo CS-3450 model... The throttle trigger has become disengaged somehow. When I depress it, no reaction from the engine or bar. Any ideas how to fix it?

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Feb 12, 2011 | Echo Garden

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Echo cs-3400 wont start . no spark. what are the primary and secondary coil readings?

if you have no spark

check for faulty plug 1st, then pull kill wire off at kill switch, then check for grounding ht lead ,
then pull kill wire off at armature , if still no spark most likley faulty ignition armature
i suspect the part number you need if its type 1 is 15662639130
replace it and set air gap and reassemble and test

here is web site for parts

or you could try , go to echo saws , then find your model

cheers hope it helps

pauly 46

Jan 28, 2011 | Echo 30.1CC Chainsaw With a 14 and...

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My cs-3450 saw has no spark. the ign wire shows to be grounded. bought a new coil, still no fire. the ign wire on this coil also shows to be grounded. what is the problem?

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Nov 14, 2010 | Echo 30.1CC Chainsaw With a 14 and...

1 Answer

Yes I have a echo CS-3450 type 1-E and have to work the throttle just to keep it running.changed the fuel filter,sparkplug,gas ratio 40:1

Check the fuel lines for decay or other damage. Make sure the muffler is not plugged. If the jet screws have slot heads, turn the H jet screw CCW somewhat until the engine 4-strokes at speed, but immediately 2-strokes when cutting. If the engine lags behind the throttle when accelerating, turn the L jet screw CCW about 1/8 to 1/4 turn. Hope this helps!

Oct 30, 2010 | Echo 30.1CC Chainsaw With a 14 and...

1 Answer

Idle to high

Make sure the carburetor was re-installed correctly as any air leak between the carburetor and cylinder will cause high engine speeds but almost no power. It can also scuff the piston/ring(s) and cylinder due to very lean lubrication from the fuel. Hope this helps!

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