Echo PB-413H giving me problems

[Fresh Cut]

A while ago I was having really bad problems with it and I needed to finish a customers yard so I pulled the spark plug out and put in the only extra plug I had with me, and extra spark plug for my Toro 36" walk behind. It started up, ran good enough for me to finish the yard, and I kept it in. Here lately, it has been cutting off on me and hard to start afterwards. It was doing fine for a while. It will cut off on me while I'm blowing full throttle and I won't be able to start it for a while. I slide the choke lever all the way up, pull it a couple times and it sounds like it wants to start. Then I pull the choke lever down about halfway and pull, and it starts sometimes... but then putts out on me. Sometimes it won't even start this way, it just sounds like it wants to start when I have the choke lever all the way up. That same customer gave me some Amsoil 2 cycle oil that I mixed and have been using in everything I have that's 2-cycle every since. I like it, my Redmax Trimmer seems to like it as well. Since I used the last of it yesterday and can't buy it locally, I'll have to wait on the customer to get some more because he's a dealer, I'm going back to regular 2 cycle oil that I usually see at the gas station today. I'm telling all this because I don't know what the problem is. I'm not sure if it's the fuel mixture, if the blower is running too lean or rich, or if having a different spark plug in it is causing it to act differently. I'm leaning towards it being the spark plug because my Toro 36" walk behind isn't a 2 cycle machine, it uses straight gas. So possibly the plug worked temporarily but can't be depended on long term as it wasn't for this application. Thanks in advance for advice. Fresh Cut

Lawn care business tips

It sounds to me that you are having a problem with your carb, or have you changed the air filter lately, they love a fresh air filter, i change mine weekly, very important, i have the same unit, since new and never a problem. Gl

[Fresh Cut]

Air filter is relatively clean.

I have no idea how to adjust the carb on it. Is it hard or do you suggest taking it to somebody to do it for me?

I really need help on this. I think I'm going to take that spark plug out and buy the plug for its application.

First, start out with replacing the spark plug. If that does not cut it, it may need to have the carb rebuilt and adjusted. Adjusting the carburetor is not something I would recommend doing unless you have proper training because you can get one out to far and the other in too far and never get it right unless you know the base setting. Plus, by now most equipment have limiter caps so you don't know where you are at anyway.

So a recap, Spark plug then pursue the fuel issue. It could be a diaphragm problem or a plugged fuel filter, fuel line leaking, or any number of other fuel isues (if it is a fuel problem).

Good luck,
Eli

[justin_time]

I see your problem, you don't have a Stihl

[CheapNEasy]

To adjust the air fuel mixture screws, run get a small screw driver, using two fingers to not run them in to TIGHT! Run both in until stop, back both out 1/4 of a turn. Prime/Choke, pull 2 times, unchoke, pull once and commence work as usual!



Hope this helps you! *Check the plug too though*

Originally Posted by CheapNEasy

To adjust the air fuel mixture screws, run get a small screw driver, using two fingers to not run them in to TIGHT! Run both in until stop, back both out 1/4 of a turn. Prime/Choke, pull 2 times, unchoke, pull once and commence work as usual!



Hope this helps you! *Check the plug too though*

Like I said before, this is only something that a trained technician should do. Typically, there will be a limiter cap on it and you will be no better off than before. And God forbid you remove the cap, and you don't know what you are doing (read, are trained to do so) you can really screw it up. To make matter worse, if you are able to adjust it to where the blower runs, you may very well have adjusted it to the point where it will burn up. Yes, this is possible. The mixture screws are "limited" for a reason. Here are several of those reasons, among other reasons, for the environmental reasons to prevent it from being set to "rich" to where it uses to much fuel, loses power, fouls plugs, creates extra and unnecessary carbon, or even prevent it from starting under certain conditions.

Another reason is to prevent the wrong combination which can cause it to over heat, or under lubricate, or not run at all. As I indicated, the correct combination setting is required for the machine to operate properly. Besides the above mentioned results of improper adjustment, like I mentioned earlier, you can destroy your machine by burning it up!!! I think a tuneup fee at a local servicing dealer would be considerably cheaper!!!

With 4 cycle engines you can cause extreme damage to the engine if it runs too rich (and you would never know it is too rich) because too much gas washes the oil off the cylinders causing it to not be lubricated properly.

For those reasons, I would highly recommend NEVER ADJUSTING a carburetor, 2 cycle or 4 Cycle, unless you are properly trained to do so. As a mechanic, for the above mentioned reasons, I have to respectfully disagree with CheapNEasy.

Originally Posted by Fresh Cut

A while ago I was having really bad problems with it and I needed to finish a customers yard so I pulled the spark plug out and put in the only extra plug I had with me, and extra spark plug for my Toro 36" walk behind.

A brand new, perfectly good spark plug, installed in the wrong machine, may not function. I have seen on several occasions where a wrong spark plug was installed in a machine, tho there was nothing wrong with the plug, the machine would not start or would start extremely hard. I have also seen they would run rough, just because of a spark plug. For the price of a spark plug, you can't take a chance. Try a new plug. If this does not do it, take it to a local servicing dealer whom you trust, preferably one who sells and services Echo. And, no, Home Depot does not qualify as a servicing dealer......


Good luck,
Eli

[CheapNEasy]

I in no way was meaning for him to not have a certified tech inspect and adjust the unit, I was mearly giving factory specs for the unit and a temporary fix to finish a job if needed in the future. I myself am a certified GM mechanic for 10 years now and certified small engine mechanic for 2 years.

He can use the factory presets to complete a job as needed. As for adjusting to much, that is why I specifically stated the use Two fingers and LIGHTLY adjust..... With two fingers it is rather hard to break the stops on the adjustment screws.

[CheapNEasy]

I do apologize, seems I misread the post and gave you specifications for Stihl unit.

Here is a link to the Owners Manual for your specific unit. There will be a section to reset to factory conditions and how to properly set them.

http://www.echo-usa.com/pdf/document...s02_012703.pdf