help to id this stihl

[iroczu]

hey everyone I bought this stihl for $6 and from what i can id by the air filter and filter housing design knob it appears to be a 038 family line but any insight would be great as i need to rebuild the motor thanks everyone

[ZeroJunk]

I think you are on the right track. Measure the bore and wrist pin diameter.

[thecfarm]

iroczu,welcome to the forum. Serial #,model # on a silver tag somewheres?

[sablatnic]

Looks like a 038 to me.

About serial number.
Look at the horizontal flat to the right of the muffler.

[SawTroll]

Look for part numbers on major parts (not the clutch cover), the first four digits will give us a good clue. At least to me it isn't 100% clear if it is an 038 or a 028.

To find out exactly which variant, measure the bore diameter.

[sablatnic]

Saw Troll is right, the parts are coded. If the first four digits in the air filter number are 1118, it is a 028, if they are 1119, it is a 038.

Or you can weigh it. If the power head is like 12 lbs, it is a 028, if it is 15 lbs, it is a 038.

Anyway, a good catch!

[iroczu]

I'm not near the saw but I think the number stamped near muffler was 1146 if that helps ?

[JohnG28]

I believe you are right about the air filter screw being an 038. I can't seem to recall at the moment but I believe the 028 screw is a little different.

[iroczu]

Was the 038 a good family line? I've been slowly getting into collecting but all McCulloch's and my every day saw is a ms270

[SawTroll]

I believe you are right about the air filter screw being an 038. I can't seem to recall at the moment but I believe the 028 screw is a little different.

I agree that it most likely is an 038, but those filter cover screws varied a little, by version, or time, or maybe both - based on the pictures I have. The one on that saw still is a strong indicator that it is an 038 though.

[SawTroll]

Was the 038 a good family line? I've been slowly getting into collecting but all McCulloch's and my every day saw is a ms270

This likely is an early 61cc 038Av (61cc) or Super (67cc), and those were heavy for the power output even by early 1980s standard. They mainly are collectors items.

[HolmenTree]

Definitely a 038. Appears to have a poly fuel tank so is not a early alloy tank model. Also not a a newer magnum because doesn't have the wider fuel tank at the fuel cap area. Also this saw doesn't have the wide style sprocket cover.
It does have the early style fuel/oil caps.
I figure it's either the 61cc standard or 67cc Super. Pull the muffler and caliper piston to determine c.c.displacement. 61cc-48mm. 67cc-50mm bore.
Magnum is 72cc-52mm bore.

[iroczu]

Definitely a 038. Appears to have a poly fuel tank so is not a early alloy tank model. Also not a a newer magnum because doesn't have the wider fuel tank at the fuel cap area. Also this saw doesn't have the wide style sprocket cover.
It does have the early style fuel/oil caps.
I figure it's either the 61cc standard or 67cc Super. Pull the muffler and caliper piston to determine c.c.displacement. 61cc-48mm. 67cc-50mm bore.
Magnum is 72cc-52mm bore.

I'm assuming youvare referring to measuring the exhaust port? And good news! I emailed stihl last week and it is confirmed from the serial number it is a 038  now I emailed them back if they have on file at all as to what model of a 038 it is, and its from 1985 they said too

[iroczu]

Anyway, a good catch!

Thanks I come across a few saws a summer where I work actually this one came in with a 041 but it looked rough so I tossed it threw gas in this one and she came to life but only turned 100psi on the compression test I would like to find a 100+cc stihl or McCulloch labelled.

Biggest to date I have a 80 or 82 cc with 36 inch bar pm8200 McCulloch but I need a jug piston and ring so to say the least its been parked since last summer

[HolmenTree]

Iroc, you measure the cylinder bore through the exhaust port,  I didnt say measure the exhaust port :D

[iroczu]

Lol I know that's why I was double checking :p

[ZeroJunk]

If you are going to rebuild it anyway you might as well pop the top. If it is a Standard or Super you can't put a Magnum top end on it, not without a lot of work anyway.

[Paul_H]

This likely is an early 61cc 038Av (61cc) or Super (67cc), and those were heavy for the power output even by early 1980s standard. They mainly are collectors items.

There are still many of these saws used by people cutting firewood and clearing their property in our area.They hold up quite nicely and the ones we see coming through the shop are generally in for a check over.
Heavy seems to be a relative term,what might be heavy for a office jockey isn't for a logger.

[HolmenTree]

Well said Paul. The 038 series is today still a very poplar model. So poplar that outside North America its modernized as the MS380 with side chain tensioner and other up grades.

[SawTroll]

Well said Paul. The 038 series is today still a very poplar model. So poplar that outside North America its modernized as the MS380 with side chain tensioner and other up grades.

MS381 by now.

[HolmenTree]

Well said Paul. The 038 series is today still a very poplar model. So poplar that outside North America its modernized as the MS380 with side chain tensioner and other up grades.

MS381 by now.

Long live the 038 8)

[SawTroll]

Well, the 380 and 381 are developments of the 038 Magnum IIs (72cc), and not the AV or Super.

[Paul_H]

You got up at 3;30 am in Norway to post that? Go back to bed  :D

[sablatnic]

Maybe he was on his way to bed. Like me!

:D

[HolmenTree]

Well, the 380 and 381 are developments of the 038 Magnum IIs (72cc), and not the AV or Super.

The 72cc 038 Magnum was a development from the original 1980 038AV. I bought my first  72cc Magnum early 1985 My first 67cc Super in 1983 and first 61cc 038AV in 1980.
Their all from the same family.