Aledafis
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Everything posted by Aledafis
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Possibly, but I'd say that the saw has had quite a bit of work since it's last rebuild going by the ammount of crud around the engine compartment - yuck!
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Ahh OK, Hydrochloric Acid I can do, I'll have a word with the science dept. at school tomorrow. The caustic is also an option. Cheers
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Thanks, I found the disassembly fairly straightforward to be honest, it was just a case of systematically finding the fixings and taking off parts as required. My background is in engineering, but from a design point of view (bakery) rather than repair and maintenance. I'm definitely enjoying the journey! I'll have a close look at the bore tomorrow, I take it that you think that it will be ok. What acid/alkali to you recommend, bearing in mind that I live in the back of beyond, here in West Wales and getting hold of specialist stuff can be an issue? I already have a bearing/seal kit on order as it must be worth replacing them now that the saw is in pieces. Thanks again Aled
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Ok, I took a pic of the piston through the exhaust port, and decided that the piston had seen better days, so stripped the engine down. Here's the piston in all it's glory. A little bit tired??
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Sorry guys, I didn't have enough time tonight to take a pic (another hobble took president as it's needed for the weekend), but did manage to get hold of a compression tester, which gave me the bad news I was expecting - 120psi max. So it's going to be a new piston. Where can I get hold of a Meteor piston Spud? I've had a look on the web, but can't seen to source one from the UK. The other option is to go for an ebay import, in which case, would it be worth going for the piston and cylinder combo for £36. I also assume that I'd need a new set of bearings and oil seals. The 390 piston/cylinder combos are about £55, is the difference in power worth the extra £20?
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Dammit, I'm just too impatient, and have ordered one off ebay, less that a tenner though so it won't break the bank. I can see what you mean by that "crap" website, but I've bookmarked them for future reference. I'll definitely take a pic of the piston/bore tomorrow night for you. Would it be a case of fitting new rings, or go the whole hog and go for a new piston/cylinder assy. (about £40 on ebay, non OEM of course). Many Thanks Aled
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Thanks for the quick replies. The fuel line looks good, but i've not looked at the impulse line yet. I'll order a carb kit to see whether that helps at all. I'll take a pic of the bore tomorrow night and report back. Unfortunately I don't have a compression tester, but will ask around to see if anybody i know has one. I have a bad feeling that this may be the problem, and that's the reason why it was sold on ebay for a very reasonable price... In which case it's my fault as the seller was quite open in stating that the saw wasn't running perfectly, I took my chance that it was just a carb adjustment issue. Here's hoping. Aled
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Hi, I'm new here, and hope that you can help me. I bought a Stihl MS290 fom ebay to cut up some wood for my woodturning hobby and am having some trouble getting it running as it should. I've adjusted the carb so that it runs nicely when cold, but after cutting for no more than a few minutes the saw looses its power badly, so much so that the chain stops turning and eventually stalls in the cut. The saw is used, and the cylinder bore and piston shows some scoring, but I had hoped that it would work well enough for some intermittent work as and when I needed a few blanks cutting. Is it worth me getting hold of a carb kit to try out first before I go about any further surjery. Any help would be most appreciated. Thanks in advance Aled
