Thought I scored a deal... now mabe not

[Can8ianTimber]

The add was for a 075 and a mostly complete 090 for $250. Sounds great. The 075 ran last time the guy used it but now was not starting.

The pictures below are the two saws. I took one look at the parts saw and thought that did not look like any 090 I have ever seen. Am I crazy or are those just 2 075's. The piston turned over a couple times but not much and wont start with fresh gas. Any sudgestions on what to do to start it? I may have just wasted $250.

 

[BobL]

Just send them to me and I'll tell you if they are 090's opcorn:
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Nah , they're 075's - greats saws - I can feel the vibes from here!

 

[Brmorgan]

Any suggestions on what to do to start it? I may have just wasted $250.

Yup, easy fix - one-way priority shipping to my address...

$250 for those saws isn't a waste by any measure if they aren't seized. If you can get one running and have the other for parts that would be a really good deal. It looks like you should have all the parts for one complete saw there, though you may need new rear AV bushings by the looks of them. There's no guarantee that the one missing some parts is an 075 - it could be an 051 since it appears to be lacking the manual oiler plunger up front by the oil cap. Most parts will still interchange, it's just that the 051 has a smaller displacement.

To get it going, first pull the spark plug and check that it's getting spark. If it is, pour a few drops of mixed fuel into the cylinder through the plug hole and give it a pull. If it fires up for a second or two, that narrows the problem down to a fuel delivery issue. Since it's a fairly old saw, chances are that it at least could use some new fuel lines, if not a carb overhaul as well. If you haven't done a carb rebuild before, it can appear a bit daunting at first but really isn't that bad. You just have to remember in what order you took things apart, and re-assemble everything with the new gaskets/diaphragms in the reverse order. Taking pictures at every step helps for this. Fuel lines are usually pretty basic, but I've never worked on an 075 so I'm not sure if they need a special molded fuel line from Stihl, or if regular Tygon etc. straight line will work.

If it's not getting spark, it could be a number of things - bad kill switch, dead short in a wire somewhere, bad coil, bad points/electronics... Some of these old Stihls are notorious for having flaky ignitions, especially the electronic ones, and replacements are becoming ever more difficult to find. At least you should have a spare to try if need be.

 

[woodsrunner]

Don't worry

You did OK.

Scott

 

[BlueRider]

the one with the manual oil pump is an 075 the other one could be either an 075(111cc) or an 051(89cc).

Not all of the early 075's had manual oil pumps. the easiest way to tell is if the cylinder has alen head bolts at the base it is an 051 and if the cylinder has studs that extend shrough the base up through to the top with nuts at the top then it is an 075.

I would try the obvious things first. the screen in the carb, the fuel filter in the tank and the spark plug lead being securely attached to the plug and the coil. There is a good drawing of the carb on the tillotson web site in case you don't know where the filter screen in the carb is located. The adjustment for the carb is to back the high mixture screw out 1 1/4 turn and the idle mixture gets backed out 1 turn.

The ignitions on the 075/051 are pretty strong. I have an 051 from 1974 that has been run enough hours to wear out an oil pump and it is still runing on its original ignition. but the ignitions are not infalable, the one on my late model 051 to 075 conversion had to be replaced and that saw had not seen heavy use. The igniton systems on the ealry and late 075's are different and my not be interchangable(there are actualy 3 different versions and one is not interchangable with the other two)

 

[tomtrees58]

thats not a 090 tom trees

 

[lmbeachy]

Just had a neighbor pick up a small job that I had sawed for him and he wanted to see my mill. When i showed it to him, he siad I have just what you need. He has an 056 Magnum II with a 36 inch bar and .404 chain on it. chain and bar are in real good shape and saw appears to be good. Looks well maintained and seem to have good compression. He bought it to start milling but decided that he would rather have a band mill. He said he had it running when he put it away, but has not run it since. He wouldn't give me a price that he wanted, but asked me what it was worth to me. Since I have a good 066, I really don't need it, but if I did or you did, what would be a fair price for it. Lester

 

[Brmorgan]

If it's in really good condition I've seen Mag IIs go for $400-500 on eBay, though that might be a bit optimistic right now. Still, they're highly sought after by a lot of people and I doubt you'd have trouble getting rid of it here on AS if you can get it for the right price. They're nice saws.

 

[Can8ianTimber]

If it's in really good condition I've seen Mag IIs go for $400-500 on eBay, though that might be a bit optimistic right now. Still, they're highly sought after by a lot of people and I doubt you'd have trouble getting rid of it here on AS if you can get it for the right price. They're nice saws.

yEAH I think I will just put a little time into trying to get it running and then sell it on ebay. It would be really good for me to have a saw I can learn on a little.