Service & Maintenance Question
I have a Husqvarna walk behind mower, only a year old and...
Service & Maintenance Question posted October 7, 2014 by richard spatola
201 Views, 6 Comments
Question:
I have a Husqvarna walk behind mower, only a year old and not been used much. Currently it will not start without starting fluid and then after it runs awhile, it starts surging and when the blades are engaged it stops. Then, it will not start again without more starting fluid! Anyone have ideas on how to fix this? Thanks!
Answer
With fuels we have nowadays the carburetor is probably just needing a good cleaning as most the internal carburetor ports are probably clogged especially the high speed ones. Without an load on the engine the engine mainly run off the carburetor idle ports.
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Thanks to all who replied to my problem - I was motivated to take the carburetor off again, clean it thoroughly with carb cleaner, put it back together and it runs better than new! Thanks again cause I was about to take it in for warranty work!
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I agree with Eugene most definitely the carburetor. I just finished repairing one, but it did take a couple tries of getting the carburetor cleaned. I usually remove the (2) bolts that hold the manifold and carburetor on, and just remove the entire assembly, just be careful with the linkage and springs that you know how they go back onto the governor controls. This would be a great place to take a digital picture before you remove it, then print it out, and make some notes on the piece of paper as you dissassemble. Also look at the IPL drawing. Then using a can of carb cleaner clean it thoroughly, and If you remove the throttle screws and adjustments just make sure you put it back to the same number of turns. clean the inside of the carburetor removing the bowl and float adjustments, and make sure all the tiny holes in the jets and ports are cleaned too, then re-assemble everything. Oh be careful with removing gaskets, seals, and "O" rings, and you should be able to re-use them. If Not, You may want to get a new gasket and "O" ring kit for your model carburetor, that usually is the best way to avoid any gas leaks latter on. "Do Not overtighten any of the small screws or bolts during re-assembly, especially be careful with the adjustment needles.
I hope this helps, and If I can be of any further help Please give me a shout.
PS. I am Not a Husqvarna Representative or Authorized Repair, Just an Experimental Mower Person.
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An comment or two about cleaning carburetors...
Most shops and small repair persons are switching over to use ultrasonic cleaning. It resolves two of the major problems of chemical cleaning.
First it uses only water and soap for jobs; although, there are a few uses that require mild cleaning solvents. This use of soap and water helps by nearly eliminating all of the hazard wastes. There is still some left over from oils and fuels but no where near the levels of chemical cleaning. This is helping the repair shops meet the EPA requirements on hazard waste disposal as most times the left cleaning solution are safe to dispose of in our normal waste water. There are some local areas that still treatment even this very mild hazard as regular hazard waste and collect fees for it disposal at the major repair shops.
Second when only using soap and water, parts that are normally attack by chemical cleaning such as rubber and plastic are not harmed. It especially important when working with two cycle carburetors as they contain small non-replaceable check valves.
The use of ultrasonic can penetrate deeper into tiny passages to clean them. It is definitely better than using tiny wire to probe these areas. One note here cleaning time it will usually take about 30 minutes to completely clean a carburetor in the small home units.
I have been using an ultrasonic cleaner for over two years now and I have only use the chemical dip once during this time for an extremely dirty carburetor.
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Richard and Eugene,
I again agree with Eugene about the cleaning process for carburetors using an Ultrasonic cleaner, however Richard since you stated that you were trying to use "starter fluid" to start your engine then, I assumed that you may have wanted to use "carburettor cleaner" to clean your own carburettor yourself.
If you take it to a repair shop most likely they will use an ultrasonic cleaner or they may just charge you for a new carburetor and do a replacement repair, which when paying for mechanic/ tech labor on an hourly wage to clean and re-build a carburetor is more than the cost of a new carburetor in most cases.
Anyhow, just some additional thoughts.
PS. I am Not a Husqvarna Representative or Authorized Repair, just an experimental mower repair person.
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Also, when you are all set and up and running again, use a fuel stabilizer if it won't get used much in the season.
If you are in a climate where it does not get used year-round, drain the gas from the tank and run the machine until it turns off before you put it away for the snow season.
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