Question about Husqvarna Backpack Blower 25cc, 140 Mph, Model# 125bt

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I have a Hasqvarna 150BT blower that started to make a knocking noise at full power and has lost some power. Seems to start ok. Loss of power / rpm and knock are only ploblem?

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I had the same issue with a Husqvarna 150 BT blower. Brand new ran through 2 tanks of gas and need to buy more gas , mixed 50 to 1 ratio 87 octane on new gas which was the same as what i was running and it started pinging and running like **** then stalled and would not start. took the plug out and it was fouled. cleaned the plug got it running again but still not good. This model comes with a NGK CMS7H plug which i replaced with a champion RZ7C and new gas 93 octane and lawnboy oil mixed 50 to 1 ration and now its running like a champ. I've had bad experiences with NGK spark plugs in the past and thought this may resolve the issue and it did. Hope this is helpful to anyone out there having the same issues. Also used some fuel stabilizer in the fuel mix, I hear this helps with the ethanol problem in the fall/winter gas.

Posted on Nov 06, 2012

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Try using fresh fuel oil mix 50:1 use higher octane gas, your engine may be pinging or detonating

Posted on Oct 12, 2010

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Posted on Jan 02, 2017

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SOURCE: I have a Hasqvarna 150BT blower that started to

sounds like either a rod bearing or a wrist pin loose on the crankshaft or on the connecting rod

Posted on Mar 23, 2010

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