Question about Echo 30.1CC Chainsaw With a 14 In.bar 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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id replace the entire clutch as if spring came out then therese got to be a reason

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Not being facetious here... change the spark plug as a first step. They require regular replacement. If that doesn't work, use a multimeter to check that the spark plug wire is actually releasing electrical pulses. If it isn't, you'll need to keep moving further up the line to the coil.

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Brand new Echo cs-400 chain saw: The chain spins fast on idle. Should'nt the chain be stationary on idle?


The manual is available here:

http://safemanuals.com/user-guide-instructions-owner-manual/ECHO/CS-400-_E

The idle speed of the negine may be too high.
Page 26 of the manual gives instructions for adjusting the speed with the "T" screw on the carburettor.

May 12, 2011 | Echo CS400 18" Chain Saw

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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?


the trigger is connected to the carb with a linkage rod. it has probably come off. usually you will need to disassemble the saw to get to it. not a easy job. some times best to take it to a shop

Feb 12, 2011 | Echo Garden

2 Answers

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

http://www.ereplacementparts.com/echo-cs3400-type-chainsaw-parts-c-35043_35970_36021.html

or you could try www.partstree.com , go to echo saws , then find your model


cheers hope it helps


pauly 46

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

1 Answer

Chainbrake spring broke need new one


Parts Catalogs Parts Catalog, Chain Saw Model(s): CS-310 Serial: C04511001001 - C04511999999 Language: English Parts Catalog, Chain Saw Model(s): CS-310 Serial: C04612001001 - C04612999999 Language: English Parts Catalog, Chain Saw Model(s): CS-310 Serial: C04713001001 - C04713999999 Language: English

Jan 05, 2011 | Echo CS310 14" Bar Length Fully Assembled...

1 Answer

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?


disconnect the on /off switch that is how it gets grounded so that it will shut off may be a bad switch disconnecting it will allow it to start.

Nov 14, 2010 | Echo 30.1CC Chainsaw With a 14 In.bar 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 In.bar 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!

Jul 12, 2010 | Echo CS400 18" Chain Saw

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