TurtleWoods72

Thank god just money and not your spit, eggs.

I can be in Rugby next week. If I haven't sorted it by then, we're meeting up for coffee.

Thank you Joe, what would you suggest?

Ok so I've cleaned it meticulously, greased the spindle on the bar a little, tensioned and adjusted everything perfectly. Tomorrow I'll rag the thing through some oak and see if I've got an oily chain. If not I'm gonna break out the Solo 656 to finish the job and look to be ordering a new bar and chain for the MS391. In fact I might do that anyway. Any suggestions? Would a 13" Sugihara with a full chisel Stihl chain be a good start point?

Seems from the phot of the MS390 that the design's changed a lot. Maybe not force the better. Here's what mine looks like for comparison...in that area.

Damn, mines different to that. Thanks anyway. Yes mine has the round one way valve. I'll try the above. It did result in a dry chain earlier, but maybe the lower revs were the issue. Still unsure how the oil managed to cover the exhaust and be dripping off the side casing inside and out but let the bar be dry as nuns.

Thanks for the advice. It's raining currently so I'll be staying inside. Great advice, thanks, very informative.

oh thank you Spud! This is what I wanted to hear! All makes sense, the air lock due to newness of the saw, the low revs (screw that) causing minimal oiling, the test runs (not in timber) causing oil to run back into the casing. I will try it in some Oak tomorrow. However, I'm still curious as to why the exhaust was swimming in oil? Surely it's seperated by a lot of plastic? Any ideas on the whole 'grub screw' theory the yanks were using for this problem on MS390's? Seemed to cure all oiling ills on that model, Can't find anywhere between exhaust and bar where an 'oil plug' could be missing.

So it's normal for one minutes use to cause dripping oceans of oil to pour from the clutch cover, and the bar nuts to be almost too hot to touch by hand? In that case I'll stick to my Makita/Solo saws, which are cool and clean.

Translated: Cut down these trees for me, saw them up into manageable logs. Leave most for me, and give me £50 for the rest, and the damage to my shrubs.

There was only one PDI, not a whole herd. Thank goodness.

This is just a few minutes revving up in the garden.

The bar and chain are fine, as was the tension like you point out. The Stihl owners manual urges you not to run the engine at full revs for the first three tank fills. I know two strokes like to be revved out, I own no less than 14 two stroke machines Update: I cleaned everything, whacked the oil delivery up to max, and tried revving it. (No bar). Oil dribbled from the oil port, not gushed. Re-fitted bar (all cleaned up and like new) and did the splatter test. When revved hard I got a nice spray pattern on the newspaper. Yes! It's cured I thought. Looked at the saw an oil was literally dripping from the bottom. Bollox. Here's a picture of the mess it left after a few seconds of revving. Plus the bar was scorching hot, as were the nuts on the bar.

Yes, it's pathetic. My saw was immaculate but the fuel tank smelled of petrol. The bar oil reservoir was dry as a bome, so they'd not checked that.

Two questions. Would the fact I'm using half to two thirds throttle effect this oiling malarkey ? As I'm running the saw in as per the manual. How the hell is oil getting on the exhaust and running down the outer side of the clutch cover? I'm beginning to think the bar is the culprit...? Also, I read on some US sites that the MS390 was prone to this problem. Several owners reported being told they'd broken off an 'oil plug' and had fixed it by inserting a machine screw with sealant tape into 'a hole between the exhaust and bar' which I'm unable to locate.

Yep that's how tight my bar is, not crushed but not swaying in the breeze either. Chain is tightened like so: Slacken off bar bolts, lift bar up at nose, adjust so that the drive links are up in the bar but I can pull them up or down a few mm, but still turn the chain freely by hand. Never had a problem with my Makitas.

Thanks, just watched a donnyboy73. Will check out the other dude now, User smallengine also has some good vids for the Stihl repairs.

Hah a, I doubt the £283 I saved will be eaten up sorting this out. Besides, I love my troublesome little white and orange darling.

Damn straight, what a waste of time eh! I'll resort to the local dealer, cap in hand if push comes to shove. There's one not too far away who sold me an FS90 years ago, so I could use that as 'friend leverage' lol. Hole is clean, how should I line it up? Bar all the way back or forward? The oil feed seems to be a slit the length of the adjustment, so not an exact 'fit' as such. Could a loose bar be the problem? (I did it up pretty tight, what's the torque setting for a bar supposed to be?) Agreed, a local dealer might get the hump and make me wait ages for a five minute fix..not keen. Ok, I'll try some other things first, and check out youtube. It's not as complicated as a car or bike, and I've had them in pieces, so it doesn't phase me tooo much Thanks for your help all! Keep the suggestions coming, it ain't over yet!

See above, grasshopper

I didn't know what this was, so I've just watched a YouTube video showing how to change one. Obviously mine isn't worn out (as per the video) so thankfully I won't have to remove the clutch to check. I doubt the worm's 'arm' isn't located as the vid man said the e-clip won't fit if it isn't. Also the oil pump is producing prodigious amounts of oil, just in the wrong place (Fixed that for you) It's producing oil, the aperture (long thin slit) above the bar mounts was wet and oily. It just seems to be going elsewhere instead/as well this sounds feasable. Where would I inspect this, as in what bits do I remove to check? I want to get this sorted myself rather than undertake the 110 mile round trip to the dealer who'll say 'leave it with us' meaning a week later another 110 mile round trip. I don't suppose a local Stihl dealer will be very eager to help? Plus I'd rather know how the thing works, since it seems I'll be taking it apart every few days!

no worries dude. I was kinda expecting Sawtroll to be the first to 'unconratulate' me to be honest. I'm not that fussed, I've got a house full of saws I can use Just wanna get it sorted, as its a nice saw, not even broken in and with a dry chain, I like it!

:beerglass:I'm sure someone will be along soon with some constructive help..

I've got a nice cold can of Directors ale in my hand. Nothing gonna rain on my parade.