Echo 550 running problems

[chrisj]

Hi, I'm having problems with my Echo 550. It's only about 12 months old, and has hardly had any use.

I put fresh fuel in. It fires fairly readily on choke, then cuts out as you'd expect. Push the choke in and it started easily, but sounds rough, like it's missing. If you try and rev it, it bogs down is the best I can describe it. The revs just fall away. If you just try to open the throttle it dies away til it cuts out. If you blip the trottle carefully you can get the revs to pick up, but not as high as they should go, it sounds a bit weedy and high pitched, instead of a throaty roar like it used to. If you hold it on high throttle it rapidly dies away and stalls.

I've checked the fuel filter and it's really nice and clean, as is air filter. I've changed the plug. I thought maybe there was still stale fuel in the fuel line that needed running through, so I persevered holding it on as high a revs as it would hold without dieing. Half a tank has been used and it's still no better. I tried cutting some softwood and it just bogged down and tried to stall each time. Then it finally cut out and didn't want to re-start.

So as I walked back to the shed with it I noticed a weird noise. Kind of like a very quiet kettle boiling, and hissing and spitting. Taking the cover off to investigate I found fuel coming out under the carb and also back into the air filter, under pressure. Taking the carb off there is a little hole next to the main inlet. Connected to this is a pipe that appears to run to the crankcase? Under the cylinder anyway. If you pull it over fuel spits out of this.

Any ideas anyone?

[Stubby]

Tank vent blocked ?

[percy verance]

Straight back to the dealers, being an Echo it's still under warrenty

[chrisj]

Straight back to the dealers, being an Echo it's still under warrenty

 

That was my thinking. Only I bought it on-line , so return to dealer is going to be a hassle. Hence I wanted to check whether it was something silly and simple, or serious enough for a warranty claim before sending back.

[TimberCutterDartmoor]

Connected to this is a pipe that appears to run to the crankcase? Under the cylinder anyway. If you pull it over fuel spits out of this.

Any ideas anyone?

 

That's the impulse line I reckon...

[chrisj]

That's the impulse line I reckon...

 

So is this a serious fault do you reckon. What does the impulse line do? I know there shouldn't be pressure pushing fuel out through the air filter and the bottom of the carb, especially after it's switched off. But I don't want to have a hassle sending it back, only for them to say it's just a routine maintenance issue and bill me.

[TimberCutterDartmoor]

So is this a serious fault do you reckon. What does the impulse line do? I know there shouldn't be pressure pushing fuel out through the air filter and the bottom of the carb, especially after it's switched off. But I don't want to have a hassle sending it back, only for them to say it's just a routine maintenance issue and bill me.

 

No; probably bust it yanking on the saw. MS460's were prone to doing this. Just put a new one on and check. Spud knows all about em.

[chrisj]

Cheers TCD.

 

I've spoken to Echo and I am getting a dealer to look at it with a view to possibly getting it sorted under warranty.