20 Most Recent Echo Gas Blower 135 MPH390 CFM Blower PB250 - Page 5 Questions & Answers

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Echo String Timmer/Weed Eater Model SRM-225 Won't ...

? 2:50 www.youtube.com/watch?v=uFN82KDj3a8 Nov 1, 2013 - Uploaded by mountainbikekayak So this is Part I of showing it want start but adding prime it wants to. Part II will show replacing the fuel filter did not fix it and then replacing the ...

Sometimes the spring may need extending as over time the bumping makes the spring lose its push tension causing no line advance

small engine repair in your area or online

is it possible you have wound string backwards? this is the usual case for string advancing string .

I know this is a very old post, but figured I'd answer it so any others with this issue can have the fix. With Echo trimmers not revving to speed although they start with no problem, the issue is usually the muffler screen. It becomes plugged with carbon because of improperly mixed 2 stroke fuel. Remove the screen from the muffler and burn off the carbon with a propane torch, or wire brush it off. Once cleaned engine should rev to speed.

Classic sign of coil failure. Run it until it cuts off then test the coil. Most likely 0 resistance, complete open circuit. This is common, coil can't be repaired, only replaced. It is a simple fix, and echo trimmers I believe are worth the cost of coil to repair. Plenty of youtube videos on how to do this repair.

This appears to be a good news problem. There is an easy fix/work around! Consumer reports found the same problem that you have discovered. Holding down the check battery switch allows the unit to operate. Read the link around the sixth paragraph the story is told. Echo Trimmer Can Be Tricky to Start "Our testers discovered the fix by chance. Pressing the check battery button, a last-ditch attempt to get the trimmer working, made all the difference. While this button ordinarily indicates the battery's charge status, in this case it also served to keep the battery from switching into protection mode and cutting off power to the motor. The next time you fully charge the battery, however, the problem can reoccur." Hope this has helped?

See if the video here helps https://www.google.com/search?q=Echo+CS-490+chainsaw+replace+throttle+lock ..

Set proper air gap. See following video (3:15).

https://youtu.be/05JYQ4s2Y_w

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

The most common cause is a wood chip stuck in the inlet or exhaust valve. Check the compression.

50:1

Check the fuel lines. Make sure the pickup tube (line with the fuel filter) has not fractured.

Almost every leaf blower uses gasoline mixed with 2-cycle mixing oil. Unless you have a larger, commercial model with a separate oil tank, you'll need to purchase mixing oil and mix it with your fuel. You can find mixing oil at PartsBuggy.com.

You tube has a lot of videos on adjusting the carburetor.

Next time it won't start, try removing fuel cap, press the fuel purge bulb a few times and put fuel cap back on.

It it then starts, the fuel tank vent needs replaced.

Replace the vent and readjusted carb once more.

Check your fuel lines near the carburetor there are 2 fuel lines and the 3rd line is a rubber line with a little check valve shaped like a small bell it is white it is assembled with your fuel lines

There is no special tool. The bolts are hex heads are require a hex tool to remove them. These can be found at any auto parts or home improvement store. Also, just an FYI, the head and cylinder are on piece on this model.

This is a year late, but you will need to disassemble the unit and loosen the two screws under the air filter that hold down the carburetor so it can be moved out a little to give access to the throttle. The longer straight part of the linkage fastens to the orange handle through the side that is notched. The other end connects to the throttle on the carburetor. I'm guessing it came loose while you were replacing the fuel line. You'll need a set of star drives, phillips and flat head screwdrivers and a socket wrench for the spark plug.

Could be fuel tank not venting properly. Run until the symptoms repeat then loosen fuel cap. If it starts and runs ok then likely the vent (cap?) Is plugged.

Otherwise it's likely a crankcase leak.