MS200T - Aspen running problems!

[Eddie@aspen]

Aspen is better, huh??

 

Saw is 2010 model, done very little work for it's age! But ran on 2-stroke mix in UK for 2-3 years! On the contract were on in Sweden we HAVE to use Aspen! I reluctantly started using the stuff. Ran like crap immediately! Loss of power, delay between throttle and revs picking up, erratic idling, ect.....

 

After 1 week, the fuel lines began leaking so badly the saw was unusable. I replaced them, and stripped the carb and fitted the diagram and other parts in the carb kit i purchased. The saw then ran adequately well for 3 weeks! Now it's back to it's old tricks!! New carb needed? Or is there any other problems i could be missing?

 

I also fitted the carb kit to 2 other guys saws, with no improvement whatsoever!!! What is the problem?? Any help appreciated!!

Hi Hope you have your saw fixed and running well. If not PM me with a phone number or your email and I will contact you to help. 200t, 201t you must always fit a pump piston kit. I have fitted them myself so will help all I can. Eddie

 

Eddie Aspen

Edited May 8, 2013 by Eddie@aspen

[Steve Bullman]

Hi Hope you have your saw fixed and running well. If not PM me with a phone number or your email and I will contact you to help. 200t, 201t you must always fit a pump piston kit. I have fitted them myself so will help all I can. Eddie

 

Eddie Aspen

 

Is this just if its been previously run on Petrol?

[spudulike]

Is this just if its been previously run on Petrol?

 

Yes, it will be Steve, the rubber absorbs normal fuel and then contracts with Aspen making everything leak especially fuel lines - got an MS230 in like that at the moment!

[Le Sanglier]

Oh, I've been putting in in my 880 cos it does not get used from week to week, should I do something?

[Eddie@aspen]

Is this just if its been previously run on Petrol?

Yes only if pump fuel has been used before. I am finding a very small amount of people with this problem. I believe you can retro fit an older style carb without the pump piston and have no problems.

 

HOW TO FIT A PUMP PISTON KIT

 

Remove the carb from the saw.

 

Unscrew throttle butterfly

 

Turn throttle shaft 180 degrees and remove.

 

Drill a small hole in the brass plug on then face of the carb, then hook it out.

 

Inside will be a brass piston with an o ring and a small spring.

 

Remove these parts. Check for any wear in the hole the piston moves in.

 

Remember it runs at the bottom of the hole.

 

If you are happy the carb is useable fit a new pump piston kit.

 

Spring in first then piston, now refit the throttle shaft and twist it round so the piston fits into the cut out on the throttle shaft.

 

Now fit the new brass plug with the correct sized punch so the edges are flush.

 

Refit the throttle butterfly making sure the throttle shaft is round the right way.

 

Don't tighten the screw yet! now turn the shaft so the butterfly moves to sit nicely in the venturi and now tighten the screw.

 

Now fit your diaphragm kit if you haven't already.

 

Then refit the carb and retune as needed.

[Sciadopitys]

Thank you for the in-depth info Eddie@Aspen!!! How much are these pump piston kits? Is there a part number i can show to a non-english speaking Swede in the local saw shop so he knows what i want?

 

Also someone spoke of a carb mod to blank off the piston pump, would this solve my problem? And would there be any negative effects of doing this?

 

Cheers! Ed

[matthawh1966]

Can someone tell me the benefits of useing aspen as all i read about on here that people are having carb probs.

[Rich2484]

Can someone tell me the benefits of useing aspen as all i read about on here that people are having carb probs.

 

Nnnnnooooooooooooooo sasshhhhhhhhh for crying out loud. You will never shut him up now... :lol::lol::lol:

[GardenKit]

:hmmmm:Hmmm..

[matthawh1966]

I thought it was à reasonabel question as i no nothing about aspen.