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Echo PB-251 leaf blower won't start

daronson's Avatar

Join Date: May 2002
Posts: 394

07-03-15, 02:37 PM   #1  
Echo PB-251 leaf blower won't start

used for 2 seasons. cranks but wouldn't start. replaced spark plug with champion from another blower (owners manual says only use NGK v-groove plug or engine damage can occur). Blower started up, but ran a little sluggish, but worked for the afternoon. next weekend it wouldn't start. replaced plug with OE NGK plug. Still won't start. checked fuel filter, seems like fuel is getting to carb.

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marbobj's Avatar

Join Date: May 2006
Posts: 3,659

07-04-15, 06:51 AM   #2  
As a rule use only the OE stuff, especially with engine damage mentioned. Some of these things only have the clearance with the piston that an OE plug provides. Other times you may get away with an alternative plug if the heat range is nearly the same. The ration of oil to gas and fuel air mixture can change the game a lot too.

Since it's tough to juggle all the variables to keep the substitute plug in line, it's better to just use the OE plug. Granted there are others out there that seem to work better or as well.

When a two cycle runs then doesn't start, first change the plug. If still a no start, proceed as with a flooded engine. You need to take out the plug,either dump the fuel from the tank or cut it off, hold the throttle WO, no choke and spin it over a number of times (ten or over).

Then put a small spoon of fuel mix down the plug hole and pull it until it fires. It can take a few times. Then put it all back together with fuel in the tank and see if it will take off for you.

Last edited by marbobj; 07-04-15 at 07:35 AM.
joecaption's Avatar

Join Date: Jan 2011
Posts: 3,969

07-04-15, 10:36 AM   #3  
At least 90% of the time with a small engine it's a fuel issue.
Rebuild or replace the carberator, check all the fuel lines for cracks or leaks.
Start using only nonethenel fuel, only mix one gal. at a time.

daronson's Avatar

Join Date: May 2002
Posts: 394

07-30-15, 02:13 PM   #4  
Had to replace the diaphragm and carb on my craftsman gas edger, and previous craftsman leaf blower stopped working years ago. Thought I would be better off with Echo, but sounds like all these small engine products have carb/fuel issues. I will pull the carb and replace if necessary.

cheese's Avatar
Forum Topic Moderator

Join Date: Jul 2001
Posts: 16,574

07-30-15, 06:58 PM   #5  
The smaller the carb, the more susceptible it is to problems, especially with today's fuel.

"Who is John Galt?" - Ayn Rand (Atlas Shrugged)

God bless!

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