262xp about to get scatted into the cover

[Exmoor Chris]

3 hours ago, spudulike said:

Hi Chris...the 262XP is a particularly fine saw, one of THE saws to have come out of Sweden. Just because you can't fix it is down to your abillity and not down to the saws provenance.

The top end marking - ADW will give us the run down after he has finished catching up with The Crown....Downton Abbey is a sore loss to him

The top end may not be Mahle but there were some old Huskys using Gilardoni cylinders and pistons and they often keep their provenance secret.

Anyway....the saw fires idles but wont rev out so....you have lack of fuel. This may be down to the carb setting so make sure the H&L screws are set to 1.25 turns out on each. 

The saw is old so do this...replace the fuel line and filter, strip the carb, check the gauze strainer if you haven't already...take it out and inspect, easy to miss scummed up open areas. Make sure the metering arm height is set correctly and that the gaskets and diaphragms are in the right order.....I know you know a reasonable amount so it is probably OK. 

It is worth getting some carb cleaner down the H&L screw holes as the high speed check valve may be sticky.

Lastly...check the tank breather, I have known these block up with age. You usually need to undo the rear AV mounts, take the fuel cap off (empty the fuel tank), get some long nose pliers on the thin black pipe protruding in to the tank and push it out. You can test the breather with a Mityvac before doing this if you have one but these old Huskys often have breather issues - the little white "pill" in the breather assembly gets blocked and this causes the issues.

Goodluck

I too love these saws but this one is testing me.

The carb as been rebuilt as far as gaskets, diaphragm, gauze, needle and lever arm but I didn't set that up, I'm going to need a little guide here.

It dies immediately the choke is opened or throttle opened, ie it ticks over (a bit quick) with the choke in the start position (closed) for a few seconds and then dies unless you do the above and the immediate. 

H and L screws are correct but no idea yet on idle, can't keep it going but I have set that deliberately too quick.

Will spray in cleaner when I'm back at the weekend. I'll dig further into breathers etc probably should start with the lever arm.

Never seen a wierd fault like this

[Exmoor Chris]

Just watched a video, I'm happy with the metering arm now.

[Exmoor Chris]

3 hours ago, adw said:

The 262 was akin to the 254, same crankcase but longer stroke, and different top cover and filter, it would be a Mahl cylinder so should not have bolt on transfer port covers, they did for a period have Teflon crank seals which are very hard and never sealed as well as the rubber seals, so an area to check, if the problem is pretty instant then I would not think tank breather, fuel filter yes, fuel hose yes, badly assembled gaskets and impulse passage blocked maybe, if after market cylinder check the impulse hole in the cylinder does go through to the cylinder, I have seen them not fully drilled.

I'll try and ID the cylinder,  it's definitely not Mahle. Impulse hole could be a good shout.