Aspen in older saws problems?

[Adamam]

I've been trying out Aspen recently since I'm not a professional and therefore it's handy to not have to worry/care about fuel cannisters going off.

 

My 028 doesn't seem to love Aspen though. It's good as gold on regular crap+stihl oil, but it's being a little naughty with the Aspen.

 

Obviously I've retuned the carb (a couple of times) since switching, but not much joy.

 

Anybody else have this?

 

Adam

[morten]

... it's being a little naughty with the Aspen.

 

What exactly do you mean by "being a little naughty"? What are the symptoms?

[Adamam]

What exactly do you mean by "being a little naughty"? What are the symptoms?

 

Seem to have to retune the carb every time I cut with it. As the saw heats up, it stops wanting to idle until I richen the low mix. Also, doesn't want to reach high revs when WOT until it's run for a while.

 

Doesn't do any of this with regular 50/1 petrol/stihl oil mix...

[GardenKit]

Adamam, are you saying that it runs ok when you switch back to petrol, or that it was Ok on petrol and did not adapt to Aspen but you have not tried on petrol again?

[burrell_]

when i run saws on aspen u need to turn the H up on the carb old saws like 076 051 dont like it but ur 028 should work fine carb setting u need to play about with

eg the ms 200t wont run rite if u change it from 2 stroke stihl to aspen tweek carb setting runs fine

[Adamam]

Used it today for a while after a further carb tweak, and it ran perfectly so I guess it was Just One Of Those Things!

 

Sorry to have wasted your time!

 

[GardenKit]

Used it today for a while after a further carb tweak, and it ran perfectly so I guess it was Just One Of Those Things!

 

Sorry to have wasted your time!

 

Glad to hear it, I was a bit baffled as they normally change over well. I do'nt even need to tweak the carb in many cases.

 

What about your other saws, are you using Aspen in them too?

[Adamam]

The Husky isn't quite repaired yet, but I've fired it a few times with Aspen and it runs fine. The tiny Dolmar I don't really find much use for so I haven't bothered to try it with Aspen yet.

 

Will do at some point no doubt. I love that tiny saw!

 

[nepia]

My turn. I have a 5/6 year old MS230 that I put over to Aspen a couple of days ago. After opening the L/A screw slightly it ran perfectly all day. Now it's all I can do to start it! I've had it running for 30 seconds on fast idle but any touch of the trigger kills it and it soon dies anyway. I've opened up the L screw, gone back to Factory Settings (won't even cough there!) but I can do no more than get it running on that fast idle for a few seconds, at which time it dies of its own accord.

Thoughts?

 

Jon

[spudulike]

My turn. I have a 5/6 year old MS230 that I put over to Aspen a couple of days ago. After opening the L/A screw slightly it ran perfectly all day. Now it's all I can do to start it! I've had it running for 30 seconds on fast idle but any touch of the trigger kills it and it soon dies anyway. I've opened up the L screw, gone back to Factory Settings (won't even cough there!) but I can do no more than get it running on that fast idle for a few seconds, at which time it dies of its own accord.

Thoughts?

 

Jon

 

Sounds like a problem with the high speed fuel circuit, have you tried the H screw on around one and a half turns out?

 

Most likely cause is that the Aspen has purged out a bit of crap in the fuel system. Things to check would be the gauze filter under the single screw carb cover followed by the metering arm height - should be level with the carb bodymGood luck Jon!