Echo PB4600 backpack blower won't start
#1
Echo PB4600 backpack blower won't start
It seems as though, rather suddenly, my backpack blower won't start. The primer bubble had cracked so I replaced it and now it won't prime. I checked both fuel lines and blew them both out and they seem clear. I tried spraying some starter fluid in it and firing it up and it would start, run for a few seconds, and then stall out. I tried adjusting the idler screws on the carb but nothing worked. I replaced the fuel filter as well but then I noticed this:
Is there supposed to be another small hose attached to that connection? Could that be why it's not priming?
Is there supposed to be another small hose attached to that connection? Could that be why it's not priming?
#3
The PB-4600 is a common blower, not sure why the site wouldn't show it.
There should be a fuel line with a filter on the end that drops down to the bottom of the tank on the inside part of that tank grommet. I recommend replacing the whole grommet/fuel line assembly. It comes in a kit for $15 or so if I remember right. Any echo dealer or many small engine shops should carry it.
There should be a fuel line with a filter on the end that drops down to the bottom of the tank on the inside part of that tank grommet. I recommend replacing the whole grommet/fuel line assembly. It comes in a kit for $15 or so if I remember right. Any echo dealer or many small engine shops should carry it.
#4
I'm really late revisiting this but better late than never.
I replaced the grommet on top of the tank and blew out the fuel lines clean. I also replaced the fuel filter but the problem I'm having is that the primer bubble still won't pull fuel in to prime the engine. This is a bubble that was replaced shortly before I ran into the issue of the blower not working.
The way I've come to understand it, the old bubble rupturing may have been the symptom of a pressure buildup in the system and the rupture was the manifestation of that problem. However, it may still exist so I decided to get a brand new carb, but I'm still waiting on the gaskets from Amazon.
My question is this: Do I need to do any fine tuning on the new carb or can I just swap it out?
At this point, if this doesn't work it's going to have to go into the shop unless someone has another suggestion.
I replaced the grommet on top of the tank and blew out the fuel lines clean. I also replaced the fuel filter but the problem I'm having is that the primer bubble still won't pull fuel in to prime the engine. This is a bubble that was replaced shortly before I ran into the issue of the blower not working.
The way I've come to understand it, the old bubble rupturing may have been the symptom of a pressure buildup in the system and the rupture was the manifestation of that problem. However, it may still exist so I decided to get a brand new carb, but I'm still waiting on the gaskets from Amazon.
My question is this: Do I need to do any fine tuning on the new carb or can I just swap it out?
At this point, if this doesn't work it's going to have to go into the shop unless someone has another suggestion.
#6
Another quick update, I bought the new carb for about $40 and swapped it out. It works like a charm now and the power levels are better than I ever remember. I also took the opportunity to rebuild the old carb so at least I can learn something about how they're put together and it took about an hour. I soaked it in cleaner and replaced all the gaskets. Just to see if I screwed anything up, I swapped out the rebuild with the new one and it works just as well so now I have a spare if need be.
Thank you all for your help.
Thank you all for your help.