It is a fuel / air problem. Do you have a primer bulb, did you replace it and put it in the right way around arrow to the carb? It is a known issue. There are lots of help online and there are some videos below..
I have a stihl model bg 55 blower it starts fine runs for 5 ...
JustAnswer
https://www.justanswer.com > small-engine > 2otj1-sti...
Oct 22, 2009 - cub cadet self propelled mower starts up fine runs for about 5 min. then dies. Will start again after several pulls then dies again 4-5 min.
1 answer · Top answer: 3 real options. I will start with the easy one. 1. Your gas cap could be not venting correctly. ...
Stihl Blower BG55 Bogs Down - Arborist Site
arboristsite.com
https://www.arboristsite.com > threads > stihl-blower-b...
Dec 5, 2013 - It I lock it on full run eventually it works itself out within 10-20 seconds. Since it never lasts long I have always put up with it, until now.
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stihl sh85 bogs down after start- how to fix. - Arborist Site
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Stihl BG56C blower bogs when the throttle is engaged
Mar 28, 2020
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Blower: Runs For A While Then Dies
eReplacementParts.com
https://www.ereplacementparts.com > lawn-equipment
If your blower runs for a while then dies, you'll need to check the fuel filters, spark plugs, and more. Our troubleshooting and repair guide can help.
Stihl BG55 Blower Problem!!! - Lawn Care Forum
lawnsite.com
https://www.lawnsite.com > ... > ?? Mechanic and Repair
May 1, 2008 - After the first couple minutes of running, the blower will normally bog down briefly and then I let off the throttle. Once I reapply the ...
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Stihl leaf blower- running problem
The Garage Journal
https://www.garagejournal.com > forum > threads > sti...
Nov 12, 2009 - I have a BG 55 when fuel tank gets down to 1/2 empty it stalls out. ... run, it revs up to max then dies completely. It will only start on full ...