Stihl MS391 Cover Screws

[Fish]

OK...If you were smart enough to read the IPL, you would see that item #5 IS a self tapping screw...and it mounts the air filter housing to the base. That is the ONLY self tapping screw shown on your IPL...and it is NOT a normal user service screw. However, if you look at ALL the other screws, NONE of them are self tapping, and any screw that might be in a normal user or serviceable position is a 6MM Torx bolt, which mounts into a steel insert in the frame. Your analysis is 99% Wrong.

Torx just designates the driver, has nothing to do with the threads.

 

[gfp55]

Your pic # 4 shows a screw with no threads left on it, can you take a better pic?????

The first set of pictures are the pictures of the top cover that you said had nothing to do with the topic, remember? Here are some new pictures of my saw. My camera doesn't take good closeups, sorry.

 

[deminin]

Torx just designates the driver, has nothing to do with the threads.

Yes, TORX is a type of "drive"...derived from Hex drives. Virtually Every bolt in a Stihl chainsaw that is in a user or serviceable position is a 6MM-1(pitch) T27 Torx drive bolt/screw, which is screwed into a steel insert that is moulded or pressed into the body or frame.

 

[gfp55]

No, if you morons would bother to look at the parts lists that I put up, you would see that STIHL calls them "self tapping screws".

Are you kids serious?

You absolute moron, the T-27 is the tool that fits 99% of the modern fasteners for Stihl, but the threads and pitch/and whether self tapping or what, are totally different. I am sorry, but you are a moron.

Something must be up here.....This is the most inane discussion that I have ever been drug into... I know Carsacw, but he isn't that intelligent....

How about a pic of all of the threads???????

Do you hear voices in your head? There is nobody on this thread named moron, morons, you morons or absolute moron. Who are you talking to? I've read this thread from top to bottom and have not seen this person you keep calling out to. I'm sorry but your friend moron is not here, maybe they will return soon. Take it easy.

 

[Fish]

Yes, TORX is a type of "drive"...derived from Hex drives. Virtually Every bolt in a Stihl chainsaw that is in a user or serviceable position is a 6MM-1(pitch) T27 Torx drive bolt/screw, which is screwed into a steel insert that is moulded or pressed into the body or frame.

That is the statement that is the problem here!

I will concede that the MS391 top cover screws are what you have said, I was wrong in mistaking them for the starter fasteners, which are self tapping, like 90% of all Stihl chainsaw fasteners after 1990.

The T-27 driver is just the tool that is used to work on the saws, it has nothing to do with the threads..

But most of all of the saws today are zipped together with self tapping fasteners, even the engine pan bolts....

 

[gfp55]

That is the statement that is the problem here!

I will concede that the MS391 top cover screws are what you have said, I was wrong in mistaking them for the starter fasteners, which are self tapping, like 90% of all Stihl chainsaw fasteners after 1990.

The T-27 driver is just the tool that is used to work on the saws, it has nothing to do with the threads..

But most of all of the saws today are zipped together with self tapping fasteners, even the engine pan bolts....

Why do you keep going on about something that has nothing to do with the OP, you called everyone morons, morons, morons. You were wrong from the start and would not listen to anyone. You said there was not any (captive) screws, you were talking about the wrong cover and now its the self tapping screws. You need to read the whole thread from start to finish and that means your posts also and see who was wrong and who would not listening and then put yourself in the OP and others shoes. Then say to yourself would I listen to that guy fish now? I (gfp55) said some things to you that were wrong. I was out of line and I hope you take my sincere apologies as intended. I will be the first to admit that I don't know sh-t, its not the first and it won't be the last time I'll have to say that to myself and others. I'm done rambling now.

 

[Fish]

Why do you keep going on about something that has nothing to do with the OP, you called everyone morons, morons, morons. You were wrong from the start and would not listen to anyone. You said there was not any (captive) screws, you were talking about the wrong cover and now its the self tapping screws. You need to read the whole thread from start to finish and that means your posts also and see who was wrong and who would not listening and then put yourself in the OP and others shoes. Then say to yourself would I listen to that guy fish now? I (gfp55) said some things to you that were wrong. I was out of line and I hope you take my sincere apologies as intended. I will be the first to admit that I don't know sh-t, its not the first and it won't be the last time I'll have to say that to myself and others. I'm done rambling now.

I was out of line as well, I apologize for where I was wrong, to all of the guys here, but I will not concede the wrong info for the record here. Yes, it is true that I have never actually worked on the ms391, and was wrong on which "cover" in the original discussion, but to expect that the readers here to accept that Stihl uses no self tapping fasteners, is a big falsehood.

 

[deminin]

That is the statement that is the problem here!

I will concede that the MS391 top cover screws are what you have said, I was wrong in mistaking them for the starter fasteners, which are self tapping, like 90% of all Stihl chainsaw fasteners after 1990.

The T-27 driver is just the tool that is used to work on the saws, it has nothing to do with the threads..

But most of all of the saws today are zipped together with self tapping fasteners, even the engine pan bolts....

This past Winter I tore my old 2001 036 PRO completely down...it had bad crankshaft bearings. I had the saw virtually completely apart, and I found Absolutely NO "self tapping" screws. Virtually every one of them was a 6MM-1 with a Torx 27 head. The picture you posted of the 391, with a self tapping screw holding the air filter housing to the frame is the First self tapping screw I have seen on either of my Stihl saws. A cheap Poulan saw from Walmart "might" have some self tapping screws, but I have never seen any serviceable screws on a Stihl that are anything but what I say. I would challenge you to pick up a cheap "parts only" saw from EBAY, and do some homework.

 

[Fish]

Yes it is. Those idiots are on more then one forum also. I'm sorry I couldn't be of more help, but when I posted some pictures of my saw, fish just started to get on my last nerve and pulled them. There is a moderator on here that is one of them, starts a thread that he knows will get people going and sits back and lets the abuse happen. Again I hope you get your saw the way you like it.

Yeah baby!!!1

 

[Fish]

This past Winter I tore my old 2001 036 PRO completely down...it had bad crankshaft bearings. I had the saw virtually completely apart, and I found Absolutely NO "self tapping" screws. Virtually every one of them was a 6MM-1 with a Torx 27 head. The picture you posted of the 391, with a self tapping screw holding the air filter housing to the frame is the First self tapping screw I have seen on either of my Stihl saws. A cheap Poulan saw from Walmart "might" have some self tapping screws, but I have never seen any serviceable screws on a Stihl that are anything but what I say. I would challenge you to pick up a cheap "parts only" saw from EBAY, and do some homework.

You have lost your mind then????????