Husky junk

[Oldfeller]

6 hours ago, openspaceman said:

We always saw "varnishing" of the insides of carburetors that had been left with fuel on, as the petrol evaporated but it seems to have become worse.

some of the older saws I have were ran on mixtures of 25;1, and some even 16;1 when stripping them I often find pure oil in the carbs,the petrol being long evaporated, back then they would often use just plain engine oil, they all lasted decades on the stuff, they say the latest 2t oils don't need so much 50;1 being common.

I do run the oldies on modern 2t oils but usually around 30-40 ;1

no issues so far.

 

[pleasant]

12 hours ago, Oldfeller said:

some of the older saws I have were ran on mixtures of 25;1, and some even 16;1 when stripping them I often find pure oil in the carbs,the petrol being long evaporated, back then they would often use just plain engine oil, they all lasted decades on the stuff, they say the latest 2t oils don't need so much 50;1 being common.

I do run the oldies on modern 2t oils but usually around 30-40 ;1

no issues so far.

 

I have a pretty rare Pioneer 11-60 (only in production for about a year or two) and on the fuel cap on that it states SAE30 oil for the fuel mix......which is predominantly an oil used in air cooled 4-stroke engines.

Edited December 2, 2025 by pleasant

[Muddy42]

There is a theory that 50:1 was implemented for environmental reasons in the US.  Anecdotally most serious users I come across seam to favour a richer mix. Its very hard to test, the debate continues!

 

 

[pleasant]

1 hour ago, Muddy42 said:

There is a theory that 50:1 was implemented for environmental reasons in the US.  Anecdotally most serious users I come across seam to favour a richer mix. Its very hard to test, the debate continues!

 

 

I'm not so sure about that theory, but you may well be correct, but my gut feeling is states like California (notoriously strict on emissions) insisted on machines being run on a more modern 50:1 mix oil, rather than it being developed specifically for California, or the US in general. I have been around oils all my working life....21 years in the motor trade, and now nearly 26 in the garden machinery sector, and like most things they develop with new technology thats available....well, a combination of costs and technology for most companies, so if you can develop a more man made laboratory oil, that will give better protection than something you have to drill out the ground, thus giving you more profit and a better product to the consumer, then it's a win win. 

[doobin]

Ok, here’s the best photos I can do of the bore. 
 

I can’t see any scratching, just slight vertical lines. 
 

what do the more learned minds think?

[doobin]

And regardless, the point is moot now. 
 

bloody Milwaukee m18 polesaw just stopped working. Packed it up and waiting for courier- they’d better sort it without quibble, it’s hardly been used. 
 

then the bar bent on the m18 chainsaw. Putting it in the vice and it’s like cheese compared to a stihl or Oregon I have here- luckily a 181 bar mount is the right fitment. 
 

But regarding the polesaw- turns out that with a bit of insulating tape to shim the tube up and a sand down of the driveshaft by 0.2mm, you can fit a stihl engine onto a husky polesaw shaft!

 

So now I have a Stihl engine that is older than the polesaw on it, which I have every confidence in the reliability of. 
 
Time to treat myself to a new combi engine. 

Edited 5 hours ago by doobin

[openspaceman]

1 hour ago, doobin said:

Ok, here’s the best photos I can do of the bore. 
 

I can’t see any scratching, just slight vertical lines. 
 

what do the more learned minds think?

So that's the piston but no rings showing? If that's the actual cylinder bore the scoring looks bad, more akin to having sucked something hard in

[Gabriel82]

2 stroke engines need synthetic oil in order to last decent hours.

 

even so ,if foreign objects, wood chips,etc get passed the air filter the cylinder+piston might get scored.

 

Resulting in compresion lost and...time for new cylinder/piston +rings...

 

Use Motul 800 oil in a new chainsaw or 2 stroke engine in the recommended dosage!

 

[spudulike]

The vertical scores look pretty deep, usually a sign of seizure but looks like the machine may have run on so possible that the ring didn't get held in the groove and continued to run.

Not easy to tell to much more without removing the cylinder though.

If the damage is also on the inlet side, it will be ingress of dirt or carbon damage.

 

[kram]

Thats just alu smeared on the bore. Suggest opening up for a look, its likely fixable without spending any cash.

 

See my auger here, scroll down for the pic before repair.

 

I have since put a new cyl on it, but couldnt be bothered to finish reassembly - some parts were not left where I thought they were...