Stihl 311y????

50blues · Jul 7, 2011

Hi,

I was just wondering what is the stihl 311y? Does it compare to another saw? I thought it was similar to the 310, but it doesn't look like it.

thanks

Stihl-Pioneer · Jul 7, 2011

No such saw. That is a number for the american national safety standard that the saw meets.

ttyR2 · Jul 7, 2011

As stated, that number is an identifier on the engine shrouds but doesn't indicate what model the saw is. My 026 and 036 both have the sticker on them.

Work Saw Collector · Jul 8, 2011

50blues said:
Hi,

I was just wondering what is the stihl 311y? Does it compare to another saw? I thought it was similar to the 310, but it doesn't look like it.

thanks

If your saw doesn't have the 026, 028, MS290, MS310 or what ever numbers, post a pic of it in here the guys will tell you what it is and give opinions of that saw.

Arrowhead · Jul 8, 2011

There is a ms311 saw, is that what your talking about?

SawTroll · Jul 8, 2011

Arrowhead said:
There is a ms311 saw, is that what your talking about?

You "stole" my point :laugh:

- but it doesn't really sound like it is.....:msp_unsure:

50blues · Jul 9, 2011

That's what I was wondering. I thought it was a ms311 at first, but it is not. The top cover is gone along with the sticker on the handle. The only one left is the 311y sticker. Sorry don't have any pictures right now.

It has the small aircleaner cover like a 026 or 024. It's not a clamshell engine so not the 290-029 style.

Where is the easiest part number to find to i.d. a saw. The cylinder part number is behind the clutch side of the housing so I can't read it. Is there some place easier?

No flippy caps still has screw caps with metal chains.

Work Saw Collector · Jul 9, 2011

Give this a shot if its a metal front handle 1/2 wrap right at the two bottom mounting holes the four digit number? 11??

The numbers will be hard to read, there tiny.

watsonr · Jul 9, 2011

Here, just find any part number and compare to this, the first 4 numbers are what you need, 11xx

1106 090
1107 07
1108 08 S
1109 090 G
1110 041
1111 051, 075, 076
1112 041 G
1113 030, 031, 032
1114 020
1115 045, 056
1116 015
1117 042, 048
1118 028
1119 038
1120 009, 010, 011, 012
1121 024, 026, MS 260
1122 064, 066, MS 650, MS 660
1123 021, 023, 025, MS 210, MS 250
1124 084, 088, MS 880
1125 034, 036, MS 360
1127 029, 039, MS 290, MS 310, MS 390
1128 044, 046, MS 440, MS 460
1129 020 T, MS 200 T
1130 017, 018, MS 170, MS 180
1132 019 T, MS 191T
1133 MS 270, MS 280
1135 MS 361
1137 MS 192
1138 MS 441
1139 MS 171, MS 181, MS 211
1140 MS 311, MS 362, MS 391
1141 MS 261, MS 271, MS 291

50blues · Jul 9, 2011

Cool, thanks I'll give that a try.

50blues · Jul 9, 2011

Well found a part # it started with 1121 so it is either a 026 or a 024. Guess I'll have to pull the jug to find out for sure.

Thanks for all your help.

nmurph · Jul 9, 2011

There is no need to pull the jug. You can measure the bore by removing the muffler and sticking a straw (I like the red tubes from lube cans) into the bore through the exhaust and SLOWLY pulling the starter rope until it hits the straw. Then carefully remove and measure. You need to be careful with the straw and not cut it in to. If you are unsure, remove the starter cover and spin the flywheel to move the piston back down once you have marked the straw (or if the saw has an outside clutch, just turn the saw over using the clutch)

50blues · Jul 10, 2011

I never would of thought of that.

thanks

shawn022 · Jul 10, 2011

Flat top cylinder = 024/024 super

Finned top cylinder = 026

50blues · Jul 10, 2011

View attachment 190146see if I can get this to work. So this is then an 024.

shawn022 · Jul 10, 2011

Yes, its an 024. Now trying to determine if its a super is the tricky part. If the con rod is stamped I'm pretty sure its a plain 024. If its cast then its a super. Anyone else have tell tale signs of determining the difference?

Btw my apologys to the member I was busting on about using the search feature.

It SUCKS

Roanoker494 · Jul 11, 2011

shawn022 said:
Yes, its an 024. Now trying to determine if its a super is the tricky part. If the con rod is stamped I'm pretty sure its a plain 024. If its cast then its a super. Anyone else have tell tale signs of determining the difference?

Btw my apologys to the member I was busting on about using the search feature.

It SUCKS

The super had a 2mm longer stroke than the standard, use the same "straw" method. Remove the plug and find top dead center, place the straw on top of the piston and mark it right at the top of plug threads, move the piston to bottom dead center and mark the straw again. Unfortunately I have no idea what the stroke should be for either variant. I do believe the 024 super had the same stroke as the 026 and you could interchange the top ends, where you could not do the swap on a standard 024.

EDIT:
Just did some searching for ya and found the following info:
024AV has a 30mm stroke
024 Super and 026 have a 32mm stroke

http://www.arboristsite.com/chainsaw/95416.htm

shawn022 · Jul 11, 2011

I see what you're saying, but would that work if say the cylinders had different base thickness. And wouldn't that method leave one saw with an extra 2mm squish? Just thinking out loud, its getting late.

shawn022 · Jul 11, 2011

Scratch that last one. I see that you're measuring the total stroke.

50blues · Jul 11, 2011

I love all these tricks you guys have.

thanks for sharing, I will try that

Stihl 311y????

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