Acerforestry
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An update...I've bought an ECV-5601 Tanaka, cracking saw for the money (it was fairly cheap admittedly), but not that surprised to find the pump is playing up. The more you look on the Yank arb sites, you realize the worm gears strip out. I can get a mate to machine one up if parts are scarce but clearly they are prone to going and are probably nothing to do with what the saw is run on really
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No, I'm replacing one pump on personal use but have two saws purchased as spares or repairs, that coincidentally have clapped pumps- but not caused by me? I should have clarified that. So potentially they are a weakness, full stop, which is the gist of the thread... and in fact veg to most blokes on here might be around a quid a litre but mine is bought used, filtered and dewatered, and reused at 35 pence a litre
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Not the case if my old Hilux is anything to go by, its run just fine for two years on the stuff mixed with derv...and the prior trucks the same; I'm afraid that's just not always accurate. Yes I am frugal, and with regular chain oil 40 quid plus per 25 litres, veg oil around 1.10 per litre, plus a minimal squirt of some kind of thinner of whatever origin. If that ultimately causes the death of a pump, I guess I'll accept the cost occasionally, but I reckon a solvent will clean it out
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I've just used regular generic veg, not specifically rapeseed - though it is useful to know that apparently doesn't cause the problems. I like the idea of thinning with a little diesel in cooler conditions, that certainly makes sense. the Tanaka pumps visually look like pretty simple worm gear arrangements, it is difficult to figure quite how they are going wrong other than blockages
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Ah, its beginning to make sense now - I'm guilty of using veg for the bars and this may be the issue. though there has seldom been more than a week or two pass between the usage of the saw. I can see why this would happen, though that said I have bought two second hand ECV-4501's that have had knackered pumps too, maybe prior owners were doing the same. I think I'm going to try repeated flush through with petrol or similar, nothing to lose as these are 50 odd quid to replace too
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I'm interested to know the frequency and on which particular makes / models bar oil pump failure occurs. I've recently got a bit of a thing about the Tanaka ECV range (I know, someone has to), but the pumps seem to play up to a ridiculous degree and are not cheap to replace. One bit of advice I've found that could make sense is that running a little fuel or alcohol through the chamber can free up a blockage and remedy any issues - when you consider a lot of the pumps are pretty basic you'd think that there would be little to go wrong, full stop. Thoughts on this please
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Steve, give me a call please on 07808 738097 I'm not sure how i'm going to be fixed but worth a chat
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Absolutely, I couldn't agree more and most climbers I have spoken to on this matter agree - if its a catastrophic bleed the quickest aerial rescue guy out there will be lucky to be able to do much by the time he is kitted up and in the crown. If it isn't that bad, chances are strong you can either get yourself down or wait a few minutes for professional emergency assist.
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I have a recently acquired Makita DCS520 which seems to be a cracking little saw, though I'd like to mod the exhaust and possibly tweak anything else possible to free up a little more power - anybody on here done any similar stuff with Makita / Dolmar? Cheers
