MS200T oiling infuriation

[daltontrees]

I would appreciate any thoughts anyone has on a problem with one of our 200s.

It was bought second hand as a backup then someone nicked our main one and this has now become our regular saw up trees. In short, the problem ius it oils perfectly well sometimes and not at all other times. This has been going on for months. Yesterday it just stopped oiling mid job and started overheating the bar. I swore at it so loudly that our client, a very churchy man, heard it through his double glazing to the other side of the house and came out to see if I needed an ambulance. Today it worked perfectly for nearly 2 tanks then stopped oiling. The groundy 10m below said he could smell burnning plastic. In fact the inside of the clutch cover is a mess and melted in places. I only just resisted throwing the saw out of the tree onto a rockery.

I have had the thing apart umpteen times, and had it into a Stihl dealer who cleaned it out and pronounced it was fine and billed me for £36. There's no split on the oil pipe, no block in the connector and the worm gear and pump spindle all seem to move precisely and freely. Some days I start the saw, it won't oil so I take the bar and clutch cover off and start it and I can immediately see oil coming out where it should. It then works fine when I put the bar on. This has become a daily routine now, no hardship as I like to clean and scrape the bar daily anyway. I am loth to fork out £40 on a new oil pump, and because the saw is otherwise fine I want to get another year or two out of it. The Stihl dealer was a bit of a waste of time and money.

And here's a funny thing, I cannot figure out if the 200 should have an oil pickup in the oil tank. You can buy the pickups from L&S, and the 200 exploded diagram shows an oil pipe and pickup in the tank yet this saw has none. Should there be, and could this be the problem?

The rockery awaits...or is it a simple fix?

[spudulike]

There should be a rubber pipe with a filter on the end that pushes in to the outside of the tank just under the oil pump and the oil pump when in place, seals against it.

 

Firstly I would fit the missing parts and a very simple check on a worn pump is to put a piece of pipe on either the pump oil inlet or outlet and blow down it whilst rotating the pump shaft, if air can be blowed pretty freely through the pump in any position, it is fooked and needs replacing.

 

The alloy does wear where the oiler rotates in it, too large a clearance and it stops working well - trust me!!

 

Had one like that on an MS200 - just like yours:001_rolleyes:

[daltontrees]

Hey, thanks! There is indeed a black pipe passing through the tank wall and going past the crankshaft to the oil pump, but i'd swear that inside the oil tank there is no filter or pipe. Would need one of those wee mirrors on a stick like dentists have to check for sure.

 

I will try your trick with the oil pump first and if that seems to be the problem I will whip the pump off another 'dormant' 200 and give it a whirl on site tomorrow. We have a massive conifer to do and I don't think I could stand another day of intermittent oiling.

[Mark_Skyland]

Hey, thanks! There is indeed a black pipe passing through the tank wall and going past the crankshaft to the oil pump, but i'd swear that inside the oil tank there is no filter or pipe. Would need one of those wee mirrors on a stick like dentists have to check for sure.

 

I will try your trick with the oil pump first and if that seems to be the problem I will whip the pump off another 'dormant' 200 and give it a whirl on site tomorrow. We have a massive conifer to do and I don't think I could stand another day of intermittent oiling.

 

The pick up pipe and filter(well its not that good a filter more just a lump of metal so it always sinks to the bottom of the oil) is part of the same pipe that goes through the casing and on to the pump. If you remove the end from the pump and lever/ wiggle the grommet part from the casing you can remove all of it from the tank.

 

The filter can get a bit stuck so giving it a little shake and a tug should see it pop out.

 

The pump can wear as Spud said or lot of the time it gets blocked by fine bits of saw dust which can result in a bit of a plug which can be removed by spinning the worm gear on the pump backwards by hand.

[daltontrees]

Thanks for extra comments. It is really odd that my oil pickup is missing from both my 200s but I will track down the replacements and get them put on. Yesterday was too busty on site to be getting oil pumps but maybe today...

[GardenKit]

You will need 1129 647 9400 hose, and 1123 640 3800 body (filter).

[Mark_Skyland]

Thanks for extra comments. It is really odd that my oil pickup is missing from both my 200s but I will track down the replacements and get them put on. Yesterday was too busty on site to be getting oil pumps but maybe today...

 

Yep it is a bit!

 

Here is what it should look like(out of focus pic!)

 

[daltontrees]

Thanks yet again. Parts are ordered and hopefully on their way. I can only imagine previous owner of saw took pick-up off for some reason then couldn't put it on again.