[AT] Scored Piston Husqvarna Blower
Mike M
meulenms at gmx.com
Wed Dec 8 16:38:28 PST 2021
On 12/8/2021 7:04 PM, Stephen Offiler wrote:
> That piston looks pretty good for one that has been run without
> lubrication, at least from this photo angle. Dark area, combustion
> getting past rings. Are the rings or ring grooves damaged, stuck,
> crudded up, whatever?
>
> I have a little 2-stroke dirt bike experience but most of it was
> decades ago. When we had a piston seize (iron liners, unlike these
> new hard-plated cylinders) there was scoring everywhere, cylinder and
> piston alike, and rings would actually break sometimes - and then,
> boy, you really had to bore oversize (if you were lucky). I guess
> these modern engines built with different techniques are going to
> provide a different set of clues. I'm still surprised to see no
> scoring on the piston and the original machining marks still obvious.
>
> I'd almost be inclined to clean everything up very thoroughly,
> reassemble, and see what happens. Check ring end gap in the cylinder
> as you go along, and maybe put in just a set of rings if they are out
> of spec. However - I'm not recommending this because you said it was
> difficult to disassemble. Your time is valuable.
>
> Steve O.
>
> On Wed, Dec 8, 2021 at 6:41 PM Mike M <meulenms at gmx.com> wrote:
>
> Hi Moe,
> Here's a shot of the piston and the retaining pin, not really sure
> how to get the pin out since the retaining clip appears to be a
> washer not a cir clip. I can order a new cylinder, piston, pin,
> washers and and gaskets for about $40, a lot cheaper than a new
> blower. Thanks for any advice anyone can offer.
>
> Regards, Mike M
>
>
> On 12/2/2021 6:39 PM, Moe Fretz wrote:
>> So what's the cylinder inside look like?
>> Can you save it?
>> Husqvarna trimmer is well worth the repair costs.
>>
>> On Thu, Dec 2, 2021 at 3:11 PM Mike M <meulenms at gmx.com> wrote:
>>
>> So I pulled apart my leaf blower today, and looked at the
>> exhaust port, as was suggested. Heavy scoring on the piston.
>> So you were right, she ran it with straight fuel.
>> Mike M
>>
>> On 11/27/2021 7:20 PM, Moe Fretz wrote:
>>> No, engine has experienced a lean seizure.
>>> Lack of lube is another way to put it.
>>> No quick fix.
>>> The engine will need a piston and rings at the least.
>>>
>>> Pull off the muffler, look in at the piston, you’ll see the
>>> piston scored on the exhaust side.
>>> If you’re lucky the cylinder isn’t damaged, you’ll have to
>>> pull the cylinder to check it.
>>>
>>> Used to do 15 or 20 of those every year.
>>> One quick error, sometimes, can cost a lot of money.
>>>
>>> On Sat, Nov 27, 2021 at 15:33 Mike M <meulenms at gmx.com> wrote:
>>>
>>> So my lovely wife was out blowing leaves the other day
>>> with my backpack
>>> blower, and it ran out of fuel. She mistakenly filled it
>>> with straight
>>> lawnmower gas, and after a bit it started to stumble and
>>> then quit. She
>>> came in to tell me about it and ask what the problem
>>> was. When I looked
>>> at the tank I noticed there was no blue tint in the gas,
>>> and I asked her
>>> what can she filled it from, and she pointed to the gas
>>> container I use
>>> for my zero turn. I told her that was straight gas, and
>>> she needed to
>>> use the 2 cycle mix, that is in another red 5 gallon
>>> can, honest
>>> mistake. She claims I told her to use that fuel, when I
>>> know I did not.
>>> I used it today and it will run for about 5 minutes and
>>> then sputter out
>>> and die, like it's running out of gas. It will restart,
>>> but then the
>>> same scenario starts all over again. Is their any chance
>>> of saving this
>>> engine? Maybe a higher oil/gas ratio? Thanks in advance.
>>>
>>> Regards,
>>> Mike M
>>>
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>>> Moe Fretz
>>>
>>> L’Orignal ON,
>>> Canada
>>>
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