Chainsaw Pics...

It's closed port. Look back up toward top of page at chippers post. It the holes for the bolt go through 6 fins on the head it's CP.

 

Open Port. Remember what Chipper1 said. The bolt holes through the fins at the back or carburetor side of the cylinder only goes through 3 of the them. Besides I do not see any bumps where the transfers are.

 

I actually forgot about the 039s without the decomp, I've got 7 or 8 390s here and they all have a decomp. I guess what I was getting at was if it has a decomp, it's a dead giveaway that is an 039. That being said, to determine if you have an 029, 029 Super, or 039, you'll have to pull the muffler and stick a straw or popsicle stick above the piston to the intake side of jug and then raise piston to make a mark on straw or popsicle stick then measure from end of whichever you use to the mark and see what the bore diameter is. If you have calipers with the depth gage, you can measure from exhaust side of piston to intake wall also to get the diameter.

029 is 45MM
029 Super is 46MM (Same as 290)
039 is 49MM

 

Doh, I didn't read close enough. Just read 6 holes quickly today and didn't reread it tonight

 

Well I cheated I went back and looked at the picture of Chipper1's cylinder and then this one.

 

Very good tip on measuring a cylinder with a popcicle stick. Would of never thought of that. And sadly not even the depth gauge of a set of calipers either!!.

 

Your right Mag

Did you really, or are you just trying to make us feel better .

That's why I posted the pictures, because I'm not too good wif dem words.

 

Thanks for the tips, I new about the popsicle stick/straw although I've never had need for it so it's a good reminder .
I was hoping there would be some other way of determining which one it is.
I'm thinking when I get a min I'll just take it out and run it, if it has good compression I should be able to tell between the 029's and the 039, but if it's lower power I'll need to take a measurement I guess.
I may have a buyer for it though already so we'll see.

Hey Clemson, any chance you'd be looking for a good running ms310 .
You know I've got to be joking since I bought the dang thing and didn't even catch it myself.
I have a few reasons I'd like to give, but in the end I still did it .
I sure hope I can recover from this one .
Do you think I could convince someone that those are the screw in cap adapters and sell it as an upgrade .
I'd never do that by the way, stuff like that has a way of coming right back to you!

 

No 310 needed, I have a 390 I bought new over a decade ago. My first saw, so I'm good on the 1127 front.

I need to actually tear it down and reseal the motor from where I did it years ago and didn't use the right stuff. I need to reseal it to make sure it doesn't get an air leak.

 

Are the 039s without the decomp rare?

You can pull the recoil starter and see the part number on the cylinder instead of measuring the bore.

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Are you propositioning me!

I'm hoping you realize that was an attempt at being funny .
If it gets an air leak wouldn't that make it a "hot saw".

Great idea, thanks.

 

Weeeeelllll we shall see how what I am about to do this morning plays out first then we can talk!

 

Yep just pointing out I have one.

And nope I don't want a hot saw that way . An easy way for more RPMS is to just lean out your H screw on your carb , it will scream!!!!

**Disclaimer do not lean out your H screw on your carb, if you really don't know what your doing and didn't read that as a joke, it is. You can quickly destroy your saw doing that, causing it to scratch and or lock up. But it will scream till then!

 

So it played out good! Brand new 372xp this am!

 

Very nice!!

 

Great saw, you will love it.
The 372XP and 365 Special are no longer available here in Australia.


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Awesome saws and it's a beauty!

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Hard to put a "like" on that one

 

Welp, had to buy a new saw today. I have a big pile of logs that our graders stacked up when we had our barn site prepped last year. I've been chipping away at it since then. Well, today I was pulling a new victim to the front of the pile where I could get to it with my bought-used MS-260 and the damm thing rolled right over the saw! I had it away from the pile, but was careless and didn't think about how rolling logs can get away from you! Anyway, the tree was laying on the bar and once I got it free and verified the bar wasn't bent, I figured I was lucky and fired it back up to get back at it. Immediately I could feel something was wrong. It about jumped out of my hand! Played with it awhile and I think I busted some kind of mounting bolt that holds the piston part to the air filter part (not a chainsaw expert, obviously). Much like after falling off a ladder or roof, I figure there could be "internal damage" that I wouldn't even know how to start fixing myself, I figure I"ll take it to the local small engine guys down the road to see if it can be saved. BUT, I had a $50 gift card leftover from Christmas and went down to the local TSC and got me a new standby Jonsered 45cc with a 16" bar. I love the 260's power/weight and 20" bar (I know, the Farm Boss; I called the guy out on it when I bought it from Craigslist. He said he sells more saws with that bar. Whatever.), but am hoping I can get it fixed. I was planning on buying a cheaper smaller saw for limbing and smaller trees anyhow so this just pressed the issue! I don't like that they come from the store with low-kickback chains, but I've never ran one before so I'll see how it goes and replace as necessary. I'm just a homeowner with some trees to cut for my stash every now and then so this should be sufficient. My first chainsaw was a cheap Poulan that my Mom bought me probably 10 years ago that finally died last year. I wanted something a step up from that but didn't want to break the bank. If my old Stihl is dead, this one will have to carry the load for awhile. Anyone have any experience with Jonsered saws? This is my first (and only third saw).

 

Congrats on the new saw.
I've had many jreds, I really like them.
I only have a couple right now though.
The safety chain isn't a big deal, make sure it's sharp and it will cut .