Shindaiwa EB45 Walbro carb

[Mike88se]

Actually, it does not "prime" the carb, but pulls fuel through the carb, sends the excess back to the tank, and "purges" all of the air out of the carb for easier starting with the choke.

That's pretty much my idea of what priming a fuel system means
I've just about decided to write this blower off. I found a new carb from a similar EB blower. Installed it and the bulb pulls fuel through the carb. And it still doesn't even attempt to fire. The purge assy on the old carb wouldn't pull fuel so I know that was at least part of the problem. Now I have fuel, spark, and compression and no start. Maybe a timing issue or a stuck valve. I may check the intake valve and the key on the crank shaft to make sure it hasn't sheared.

 

[Mike88se]

The blower will fire up with gas poured into the carb so I know the engine and ignition are okay.
Maybe this carb just isn't right for this blower even tho it fits and uses the same gaskets? It's an eb630 carb.

That's pretty much my idea of what priming a fuel system means
I've just about decided to write this blower off. I found a new carb from a similar EB blower. Installed it and the bulb pulls fuel through the carb. And it still doesn't even attempt to fire. The purge assy on the old carb wouldn't pull fuel so I know that was at least part of the problem. Now I have fuel, spark, and compression and no start. Maybe a timing issue or a stuck valve. I may check the intake valve and the key on the crank shaft to make sure it hasn't sheared.

 

[Mike88se]

A stuck valve.... did I really write that? :laughing:
Wish this thing did have valves... I'd try adjusting them
I got it to start tonight w/o pouring gas in the carb. Had to pull the starter a bunch and open the throttle more than halfway to get it to fire up. It ran just like it did before it quit. Runs fine for a few seconds then it bogs out. Fuel starvation right? I put a new fuel filter on but it may not be big enough.

The blower will fire up with gas poured into the carb so I know the engine and ignition are okay.
Maybe this carb just isn't right for this blower even tho it fits and uses the same gaskets? It's an eb630 carb.

 

[Mike88se]

Got it to run pretty good today. At total WOT the a/f ratio seems to go bad but at 90% throttle it runs great and blows hard. Doesn't idle for **** tho. Maybe the carb is really too much. I know there's a big difference between a 45cc engine and a 60cc engine. Waiting on a bigger fuel filter to see if that helps anything. Also need to rig up the throttle since the brackets are way different on the two carbs. If I get it running good enough it may be a good time to sell it and buy something I can get parts for Most of the critical parts on this thing are NLA. Too bad bc it's still a great engine. I'd trade the Echo and Stihl machines for Shindaiwa any day.

A stuck valve.... did I really write that? :laughing:
Wish this thing did have valves... I'd try adjusting them
I got it to start tonight w/o pouring gas in the carb. Had to pull the starter a bunch and open the throttle more than halfway to get it to fire up. It ran just like it did before it quit. Runs fine for a few seconds then it bogs out. Fuel starvation right? I put a new fuel filter on but it may not be big enough.

 

[Mike88se]

Okay, other than rigging up a new throttle cable bracket I'm going to say it's fixed. I think I'm talking to myself anyway

Got it to run pretty good today. At total WOT the a/f ratio seems to go bad but at 90% throttle it runs great and blows hard. Doesn't idle for **** tho. Maybe the carb is really too much. I know there's a big difference between a 45cc engine and a 60cc engine. Waiting on a bigger fuel filter to see if that helps anything. Also need to rig up the throttle since the brackets are way different on the two carbs. If I get it running good enough it may be a good time to sell it and buy something I can get parts for Most of the critical parts on this thing are NLA. Too bad bc it's still a great engine. I'd trade the Echo and Stihl machines for Shindaiwa any day.

 

[tybilly]

cool that you got it running,you sure had a time with that thing,

 

[Mike88se]

cool that you got it running,you sure had a time with that thing,

yeah... unfortunately it doesn't idle and still isn't reliable.

 

[Mike88se]

yeah... unfortunately it doesn't idle and still isn't reliable.

Went ahead and sold it. The guy seemed happy with it and thinks he knows a guy that can get the priming and idle problems fixed. Hope so... the engine has a lot of life left in it.