PDA

View Full Version : Echo 755 loses power when hot...


khutch
01-28-2013, 10:05 PM
Not the spark arrestor screen....Seems to run again OK when it cools off a bit, starts right up, then loses power again after a few minutes of full power. Before the day ended tried to run at 3/4 power for a while, that seemed maybe to work not sure. Problem seems to be when running WTF open.
Any suggestions?

seabee24
01-28-2013, 10:18 PM
Warrantee?

khutch
01-29-2013, 08:20 AM
No warranty - 3 years old

Landrus2
01-29-2013, 08:54 AM
Take a compression text see if it's good. If OK next step
If you have another blower the same running good just swap the carburetor for text . You problem should be the carburetor :waving:

khutch
01-29-2013, 11:16 AM
What would be proper compression number?

Thanks for great forums!

Landrus2
01-29-2013, 11:44 AM
Between 125 and 145 you good :waving:

piston slapper
01-29-2013, 02:11 PM
Are there any damp or oily spots around the carb or the head.??
Could be a leaky intake ...isoblock...or head gasket...that seals when it is cold..and progressively gets worse as the unit warms up..

ed2hess
01-29-2013, 06:27 PM
What happens when you adjust the carb to give it a little more gas?

herler
01-30-2013, 01:59 AM
If it's been sitting outside chances are the air filter's wet.
Remove it and see what happens.
Let it air dry, or replace it.

Otherwise it could be the coil, they're lifetime warranty.

khutch
01-31-2013, 01:03 PM
I

Otherwise it could be the coil, they're lifetime warranty.

Sure about that?? Dealer said no way..........

khutch
01-31-2013, 01:03 PM
What happens when you adjust the carb to give it a little more gas?

Only idle adjustment on this Echo, which is pretty stupid. No access to H + L adjustment.

khutch
01-31-2013, 01:06 PM
If you have another blower the same running good just swap the carburetor for text . You problem should be the carburetor :waving:

Don't have another Echo, only Sthil.
How does the carb fail as it gets warm/hot?

BigFish
01-31-2013, 06:41 PM
No warranty - 3 years old

Echo has a lifetime warranty on coils, same as stihl. You can't just take the coil in, ya gotta hand em the machine so they can " check it out"$$.

Did you check it for spark when it quits?? Pull the plug and use a spark checker.
The plug will do, but its not very accurate.

ed2hess
01-31-2013, 07:15 PM
Only idle adjustment on this Echo, which is pretty stupid. No access to H + L adjustment.

Nope......it has a needle adjustment. Take the carb off and look around you will see it. There is a hole in the plastic cover so that the adj device can go straight in from the recoil side.

khutch
02-01-2013, 08:44 AM
Did you check it for spark when it quits?? Pull the plug and use a spark checker.
The plug will do, but its not very accurate.

Doesn't quit, just loses 90% of power, so spark checker will still show spark?.

khutch
02-01-2013, 09:07 AM
Nope......it has a needle adjustment. Take the carb off and look around you will see it. There is a hole in the plastic cover so that the adj device can go straight in from the recoil side.

Take the carb off? If I take the carb off, how the heck can you adjust it till you put it back on?

ed2hess
02-01-2013, 04:09 PM
Take the carb off? If I take the carb off, how the heck can you adjust it till you put it back on?

I thought you was having trouble finding it. It may have a cap on it but I don't remember mine having a cap. It uses this D shaped adjusting tool. There are pictures in this part of forum somewhere.

ed2hess
02-02-2013, 06:33 PM
Sorry for the smart answers....I got mine back in the shop and there is a hole in the plastic cover for the tool. It is just above the primer bulb. One hole directly above the primer is for a holding screw and the next one up is the one to adjust the carb. I will search around on this forum for pictures of the adjusting tool.