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

1 Answer

Hard starting and when warms up rpm's drop

I have a husqvarna 125bt back pack blower. it is hard to start and once the engine warms up the rpm's drop. any help is appreciated.


Posted by on

  • fkreager Dec 21, 2008

    it is very hard to start and once it starts it blows like normal but once it warms up the rpms drop and it will not blow as hard as it did when it was cold

  • Stephen Evans May 11, 2010

    what state are you located



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.

    Vice President:

    An expert whose answer gotĀ voted for 100 times.


    An expert who has posted more than 50 answers, of which 90% or more were rated as helpful.

  • Expert
  • 87 Answers

Remove the muffler and inspect the piston, rings and cylinder for vertical scoring. If so You may need a top end rebuild.

Posted on Apr 10, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Husqvarna 125bt backpack leaf blower starts fine but once shut off will not restart for hours.

it might be the coil my chain saw did that put new coil on and that fix it.// had another chain saw do that it was full of dirt cleaned it out and that fixed it.

Aug 19, 2014 | Husqvarna Garden

1 Answer

Broken pull rope on 125BT Backpack Blower

Most small engine shops and big box stores like home depot sell generic replacement starter rope. If you want the exact part from Husqvarna, there are 2 engine variations for the 125BT. The rope for the AC57 enigne is part# 531009567, the rope for the AC55 engine is part#531009653.

Jan 04, 2011 | Husqvarna Forest & Garden 125bt Backpack...

1 Answer

My Husqvarna 125BT leaf blower will not make full power anymore. The past few weeks I noticed a strange sound best described as as a rattle similar to a loose baffle. Starts and runs fine but only makes...

Try pulling the muffler off and checking for blockage in the exhaust port, expecially the small hole above the main exhaust port. This is the same thing that my 125bt was doing this season and after cleaning out the carb with no improvement, I found some carbon build up in the exhaust port. The small hole above the port was completely blocked. After cleaning up all of the carbon buildup, it ran back to full power again.

Oct 30, 2010 | Husqvarna Backpack Blower 25cc, 140 Mph,...

1 Answer

I have a Husqvarna 125BT blower. It runs fine but

GAP is the opening between terminals at the end of the spark plug ( on the threaded side of the spark plug) but spark plugs should come with the right gap from factory, as for your problem with to restart your blower it is ok just need to let cool down for 15 min or more.

If you need further help, reach me via phone at

May 15, 2010 | Husqvarna Forest & Garden 125bt Backpack...

1 Answer

Husqvarna 125bt backpack leaf blower. I put

if you've ran it for any length of time you will need a new cylinder and piston/rings and cylinder gasket ,
take the muffler off and look for scoring /scorching on the piston

Oct 21, 2009 | Husqvarna Forest & Garden 125bt Backpack...

2 Answers

I put gas without oil in the Husquavarna back pack blower. Is it ruined?

Can you turn the engine over?
Did it stop by it's self or did you stop it?

If it still runs.....mix oil in the gas at a 50 to 1 ratio and run it.
If it does not run or turn over it is most likely ruined.......but
take the spark plug out and put a little 2 stroke oil in the cylinder and try to turn it over.....if you get the engine turning.......put the spark plug back in and try to start it.

Sep 07, 2009 | Husqvarna Backpack Blower 25cc, 140 Mph,...

2 Answers


check the fuek lines for hole and leaks, check the fuel filter and clean if necessary. remove the carbuerator and inspect the gasket; it should be soft and flexible, if it seems hard or brittle replace it. clean the carb with carb cleaner sray (available at any local auto parts store) and compressed air. make sure you get inside the small fuel rail holes. check the primer bulb for pin holes and seating/sealed properly. if that doesn't work have the carb repaired at a service center or replaced.

Oct 18, 2008 | Husqvarna Backpack Blower 25cc, 140 Mph,...

Not finding what you are looking for?
Husqvarna Backpack Blower 25cc, 140 Mph, Model# 125bt Logo

Related Topics:

609 people viewed this question

Ask a Question

Usually answered in minutes!

Top Husqvarna Garden Experts

Jim Parker
Jim Parker

Level 3 Expert

1041 Answers

Jay Finke
Jay Finke

Level 3 Expert

1389 Answers


Level 2 Expert

204 Answers

Are you a Husqvarna Garden Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides