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Author Topic: 048av super.  (Read 3508 times)

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Offline 20ozjolt

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048av super.
« on: March 18, 2017, 09:17:21 PM »


decided to "restore" her.... started the tear down and got a hold of a 048 part manual and a 042/048 shop manual...

one question i have now is what make it a 048 "super" ?






Offline Al_Smith

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Re: 048av super.
« Reply #1 on: March 19, 2017, 05:02:30 AM »
I think "super" was just a word used to sell saws because as far as I know there is no difference .

There's a lot of urban legion stuff about this model .It's been said it was designed for the forestry service .Also stated to be the highest power to weight ratio of any saw built in that time period .Claimed to have been discontinued because they had a tendency to become case leakers because of design .I have no idea if any of that info is accurate .I own two of them neither is a super .

Offline Ox

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Re: 048av super.
« Reply #2 on: March 19, 2017, 11:15:56 AM »
I can't say for the 048 super but I have an 034 super and it's the same as an 036.  A little more power than a standard 034 is all.  Why they had two saws so close together like that I'll never know. 
My 034AV Super is my favorite saw of all time.  A close second is a Homelite SuperXL Automatic.  :)
K.I.S.S. - Keep It Simple Stupid
Use it up, wear it out, make it do or do without
1989 GMC 3500 4x4 diesel dump and plow truck, 1964 Oliver 1600 Industrial with Parsons loader and backhoe, 1986 Zetor 5211, Cat's Claw sharpener, single tooth setter, homemade Linn Lumber 1900 style mill, old tools

Offline 20ozjolt

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Re: 048av super.
« Reply #3 on: April 25, 2017, 08:12:36 PM »
Finally got to the store and bought Allen Keys long enough to pop the cylinder head off, what do you guys think about it this thing's condition?



 






Offline Al_Smith

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Re: 048av super.
« Reply #4 on: April 26, 2017, 05:39:00 AM »
Looks okay to me,put it back together

Offline teakwood

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Re: 048av super.
« Reply #5 on: April 26, 2017, 08:24:21 AM »
looks great for a old saw, those marks are normal
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Offline Ox

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Re: 048av super.
« Reply #6 on: April 26, 2017, 11:44:15 AM »
Looks better than some that run 100% that I've seen.
K.I.S.S. - Keep It Simple Stupid
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1989 GMC 3500 4x4 diesel dump and plow truck, 1964 Oliver 1600 Industrial with Parsons loader and backhoe, 1986 Zetor 5211, Cat's Claw sharpener, single tooth setter, homemade Linn Lumber 1900 style mill, old tools

Offline 20ozjolt

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Re: 048av super.
« Reply #7 on: April 26, 2017, 01:12:58 PM »
So dont do new rings? Or rings and piston....

Offline Ox

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Re: 048av super.
« Reply #8 on: April 27, 2017, 07:38:28 AM »
Maybe.  If you've already got it apart and don't need it right away..... if it were mine I'd throw a cheap aftermarket rebuild kit into it just cause it's apart now and those kits ain't much.  But what do I know?  :laugh:  Each man for hisself.
K.I.S.S. - Keep It Simple Stupid
Use it up, wear it out, make it do or do without
1989 GMC 3500 4x4 diesel dump and plow truck, 1964 Oliver 1600 Industrial with Parsons loader and backhoe, 1986 Zetor 5211, Cat's Claw sharpener, single tooth setter, homemade Linn Lumber 1900 style mill, old tools

Offline teakwood

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Re: 048av super.
« Reply #9 on: April 27, 2017, 08:15:41 AM »
take the ring of the piston, carefully, and place it inside the cyl if the two ends are pretty tight together they are still good. Maybe change the rings but i would not change the piston. 
Aren't the piston and cyl matching units in saws??? i thought that you can't change the piston without changing the cyl
National Stihl Timbersports Champion Costa Rica 2018

Offline HolmenTree

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Re: 048av super.
« Reply #10 on: April 27, 2017, 11:58:29 AM »
I think "super" was just a word used to sell saws because as far as I know there is no difference .

There's a lot of urban legion stuff about this model .It's been said it was designed for the forestry service .Also stated to be the highest power to weight ratio of any saw built in that time period .Claimed to have been discontinued because they had a tendency to become case leakers because of design .I have no idea if any of that info is accurate .I own two of them neither is a super .
Interesting thing about these 1117 series 048 Supers is all the ones I've seen had full wrap handles and came out of the PNW.
"Super" labelling  was a big marketing thing for Stihl in that area of the forest industry at that time.  Stihl paid alot of attention to and also alot of testing in the PNW.
When the 048 was introduced in Dec 1979 Stihl was in a bind to sell loggers a saw in the 80cc class to cut 2nd growth timber in the area. Husqvarna and Jonsereds were already invading the market with lightweight  80 plus cc saws like the Jonsereds 910 introduced in 1979 at 87cc and only 15 lbs versus the 76.4cc Stihl 048 at 17 lbs.
Stihl's only 87cc saw at the time was the 045 Super then onto the 056 Super a few months later in 1980 weighed not much more then the 048. With a few tweeks in port timing and a larger bore carb the 048 was now a Super, but no where near the h.p. of a 87cc 045 Super or a 056 Super.

The 048 had its place in history though as it was a big bore 042. The 042 introduced in 1976 was a game changer for Stihl as it was their first model with the Master Control switch and their first attempt in a streamlined saw.
Not until 1986 did stihl have a best power to weight ratio in that class with the 85cc 064AV at 14.1 lbs.
There was not a Stihl saw to replace the 048 76.4cc displacement until 1995 with the introduction of the 76cc 046.
The 046 still weighed more then the early 064 though.
The 72cc 038 Magnum introduced in 1985 is another worthy mention.
Making a living with a saw since age 16.

Offline Al_Smith

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Re: 048av super.
« Reply #11 on: April 27, 2017, 04:01:45 PM »
The two I have do not say super.One with a full wrap handle came out of Wisconsin the other with a standard handle from Oregon from a dealer no less with .The later had a spun main bearing but being rather creative it was no problem to repair .

One of them has a Bosc ignition and the other an SEM .The SEM by the way is a self advancing type which would not advance and thus didn't run at full speed.On another web forum a fellow had a coil but had no idea what it went to .I told him,he put it on flea bay and I bought it for 5 dollars.
At the present the first one is getting low on compression so it needs rings.The full wrap has a faulty clutch side seal which is rare but I have one spare left just haven't had the time for repairs .BTW these were the first Stihl saws I ever owned .

Offline Al_Smith

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Re: 048av super.
« Reply #12 on: April 27, 2017, 04:48:04 PM »
With regards to replacing the piston and cylinder on the subject saw it would be rather hard to find same .Some times maybe on E-bay for more money than the saw is worth .
The rings are the same as an 038 magnum and easy to find .However if the saw had decent compression I personally would forgo that .Keep in mind if you do replace the rings it will take some time before they seal because the cylinder will be slightly out of round .Have no fear they will eventually wear in though just takes some run time before that happens .

Offline ZeroJunk

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Re: 048av super.
« Reply #13 on: April 27, 2017, 04:58:52 PM »
I don't understand why he took it apart to start with.

Offline 20ozjolt

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Re: 048av super.
« Reply #14 on: April 28, 2017, 12:45:32 AM »
I bought a new saw because this one was no longer cutting well.

So far the issues i have found are clutch, AVs are hardening and cracking, I was expectring to find the piston in worse condition thats why i put the pictures up.... I've only ever worked on cars and motorcycles....

It was a tractor that wirked well for me so i want to make her run well again

I actually boufht this one from a retired FS guy

Offline 20ozjolt

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Re: 048av super.
« Reply #15 on: April 28, 2017, 12:48:03 AM »
Oh and the fuel and oil lines were failing
That master control switch had broken and a toggle was added .. I would like to fix that also

I hunted anf couldent find a new top end (yet) have foumd aftermarket pistons and rings... on cars you can do that it sounds like its a bad idea in a saw

And yes i already read NOT to hone a stihl saws cylinder

Offline HolmenTree

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Re: 048av super.
« Reply #16 on: April 28, 2017, 09:58:23 AM »

And yes i already read NOT to hone a stihl saws cylinder
I actually boufht this one from a retired FS guy
Not all saw cylinders go out of round in the bore especially a Mahle cylinder . Easy enough to measure the bore to see if it is out of round.

I remember a Oregon forest service desk jockey from about 10 years ago who claimed he took ownership of a 048Super with a full wrap handle, when he was cleaning out a storage building.
Don't know what happened to the saw as he later fell in love with a 064.
Making a living with a saw since age 16.

Offline jacob j.

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Re: 048av super.
« Reply #17 on: May 17, 2017, 10:53:33 AM »
Not all saw cylinders go out of round in the bore especially a Mahle cylinder . Easy enough to measure the bore to see if it is out of round.

I remember a Oregon forest service desk jockey from about 10 years ago who claimed he took ownership of a 048Super with a full wrap handle, when he was cleaning out a storage building.
Don't know what happened to the saw as he later fell in love with a 064.

The 048 was popular with the land management agencies, although I've never really figured out why. Most government agencies use Stihl products due to the sweetheart deal Stihl gives them on multi-year BPA contracts.

I have an 048 cylinder here from a hotsaw someone built in the 70's. Whoever built it was going for high revs as the exhaust and intake timing are very tall numbers and the piston was running one ring. It would be interesting to get with the builder and find out what exactly they had in mind.

Offline HolmenTree

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Re: 048av super.
« Reply #18 on: May 17, 2017, 02:59:03 PM »
Good to see you on here again Jacob !
Interesting about that 048 cylinder.
If it came from the PNW, I'm thinking probably a die hard Stihl fan modded it for the obstacle pole buck.
Without a pipe of course hehe.

Say have you heard from Niko SawTroll lately?
Getting worried about him, it's not his nature to be away for too long and missing out on the action.
Making a living with a saw since age 16.

Offline 20ozjolt

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Re: 048av super.
« Reply #19 on: January 14, 2018, 10:13:26 PM »
been lurking for a while on the forum...

no shes not forgotten been buying up parts for it, got all new OEM: AVs, fuel and oil lines, cylinder gasket, exhaust gasket  ect...

but now I'm super torn on how into her to get... there is a new master control switch on ebay for 40- (first one i have seen sense i started watching...) and I found a shop in Croatia that lists one in stock for like 5- but no idea if i can buy it lmao... I would like to forgo the toggle switch i put in the air filter cover to get around the switch breaking but... 40 bones for a little piece of plastic...

there was a new OEM top end in Russia i missed out on (price went to rich for me)

it has become more of a to do for me as a winter / sanity project. updates and pictures will be coming... as much as i want to make it like new I think it will be a functional rebuild to just have as a tool.


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