identifying Stihl 070 and 090

[7oaks]

Here's a link to a repair manual that references the 090R.

http://www.repairmanual.com/catalog/CF-11

And here's another reference to 090R. Maybe our Aussie friends know about this model and or book.

http://barriosbooksales.cart.net.au/details/2123540.html

Then here's a page with all listed for which spark plug and the gap.

Chain Saws (Cont’d)
023 Wood Boss, 023AV, 023C, 023L, 024 ................E3.12 0.020
024AV, 024WB, 025 Wood Boss, 025AVH, 026........E3.12 0.020
026AVP, 026 Pro, 026 Artic, 026S, 028AV ................E3.12 0.020
028AVE, 028AVS, 028WB, 029, 030AV, 031AV ........E3.12 0.020
029 Farm Boss ..........................................................E3.12 0.020
031AVEQ, 032AV, 032AVE, 034, 034AVEQ, 034WB E3.12 0.020
036, 036AV, 036 Pro, 036 Pro Arctic, 038AV ............E3.12 0.020
036QS ................................................................E3.12 0.020
038AVE, 038AVMEQ, 038AVS, 038 Magnum, 039 .. E3.12 0.020
040, 040G Normal Service ........................................E3.12 0.020
040AV, 040G Light Service .......................................E3.12 0.020
041, 041FB, 041AV, 041AVE ....................................E3.12 0.020
041AVE Super ..........................................................E3.12 0.020
042AV, 042AVE .........................................................E3.12 0.020
044 Artic, 045AV, 045AVE .........................................E3.12 0.020
045AVE Super, 046 Artic, 046 Magnum ....................E3.12 0.020
048AV, 048AVE, 050AV ............................................E3.12 0.020
051AV, 051AVE, 056 .................................................E3.12 0.020
056AV, 056AVE, 056AVS ..........................................E3.12 0.020
064, 064AVEP, 065, 066 ...........................................E3.12 0.020
066 Magnum, 064AVEQ, 064AVREQ .......................E3.12 0.020
070, 070AV, 075AV ...................................................E3.12 0.020
075AVE, 076AV, 078AVE ..........................................E3.12 0.020
084, 084AVEQ084Z, 088, 090 ..................................E3.12 0.020
090AV, 090E, 090G, 090N, 090R, 090S ...............E3.12 0.020
1106-Contra 1601 .....................................................E3.12 0.020
MS191T, MS200T, MS290, MS390 ...........................E3.12 0.020
O42AVEQ, 044, 044CSA, 044AVE ...........................E3.12 0.020

This is probably where Mr. Dibbs got the numbers?

And another link showing all the variations related to the correct spark plug...http://www.sparkplugs.com/results_fitment.asp?pid=852

Hope someone can come up with a real answer to this! You don't suppose the 090S is the Super model with 200cc's do you?

...Carl

 

[diesel&coffee]

russian
german
spanish
english
netherlands

I really would like to know?? Hell someone to the simple thing - call stihl in germany and find out?? Someone in marketing or P.R will prob. be more then happy to dig up the old info.. If I spoke german I would be the first to call

 

[diesel&coffee]

I emailed Stihl in Germany!!

 

[Dibbs]

This is probably where Mr. Dibbs got the numbers?

.......

Hope someone can come up with a real answer to this! You don't suppose the 090S is the Super model with 200cc's do you?

...Carl

That is exactly where I turned up those odd lettered 090 names!

I doubt stihl made an 090 with a bigger engine but you never know!
If they wanted a bigger stroke then they would have needed to modify the bottom end of the crankcase and if they wanted to have a bigger piston then they would have needed to have bored or changed the cylinder too.

If you're talking FrankenStihl......

KS 43 = 68mm Stroke & 68mm Bore
076 = 58mm Stroke & 42mm Bore
090 = 66mm Stroke & 40mm Bore

68mm piston @ 40mm stroke = 145cc (8.8 ci) with the cut down KS 43 cylinder and 090 crank
or
68mm piston @ 42mm stroke = 153cc (9.3 ci) with the cut down KS 43 cylinder and 076 crank
or
68mm piston @ 68mm stroke = 247cc (15.1 ci) with the full KS 43 cylinder and crank.

68mm diameter piston/cylinder is the largest I've heard of in a mass produced chainsaw.

 

[7oaks]

Okay! Who's got a spare 090 they want to try the 68mm piston conversion on?

Not me I'm not that knowledgeable for sure...Carl

 

[Gumnuts]

I'll take your 090R and raise you!

090AV, 090E, 090G, 090N, 090R, 090S.

Anti -Vibe
Electronic
Gear
asked Stihl tech N stands for nuh 'he does'nt know' /diff handle ,maybe? Normal non AV ?!
Round wrap handle
Super

I'll see you and raise you
ANYONE SEEN AN 090G AV MODERN WITH THE ROUND WRAP HANDLE - CASE IS DIFFERENT FOR THE ROUND WRAP MOUNTS- LIKE ON THE NEWER
090AV

 

[SawTroll]

That is exactly where I turned up those odd lettered 090 names!

I doubt stihl made an 090 with a bigger engine but you never know!
If they wanted a bigger stroke then they would have needed to modify the bottom end of the crankcase and if they wanted to have a bigger piston then they would have needed to have bored or changed the cylinder too.

If you're talking FrankenStihl......

KS 43 = 68mm Stroke & 68mm Bore
076 = 58mm Stroke & 42mm Bore
090 = 66mm Stroke & 40mm Bore

68mm piston @ 40mm stroke = 145cc (8.8 ci) with the cut down KS 43 cylinder and 090 crank
or
68mm piston @ 42mm stroke = 153cc (9.3 ci) with the cut down KS 43 cylinder and 076 crank
or
68mm piston @ 68mm stroke = 247cc (15.1 ci) with the full KS 43 cylinder and crank.

68mm diameter piston/cylinder is the largest I've heard of in a mass produced chainsaw.

I am sure I heard of a factory 090 version with more than 137cc - but don't remember the source - may be the 090S?

Btw, you messed up with bore vs. stroke in parts of your post, but easy to understand anyway.....

 

[hoss]

What is a KS43?

 

[Gumnuts]

What is a KS43?

Big mother Stihl

[COLOR="Red"]http://www.acresintern...ie_bc[/U][/B] - good eye for detail / thanks.

 

[belgian]

What is a KS43?

you need 2 men to operate it....:greenchainsaw:

 

[Gumnuts]

OK - Belgium beer ...tis good

PM sent.

 

[Dibbs]

Btw, you messed up with bore vs. stroke in parts of your post, but easy to understand anyway.....

Yep, I sure did!
Right figures on the wrong items!
You all knew what I ment though!

What is a KS43?

I think Hoss just had a bit of "displacement lust" there!

With the luck you've been having with the big saws lately I wouldn't be surprised if you had one within the week!

 

[Bill G]

you need 2 men to operate it....:greenchainsaw:

This is the model I have been chasing for awhile. I know someday I will find one. I just wish that day would arrive.

Bill

 

[7oaks]

you need 2 men to operate it....:greenchainsaw:

Correction...You need two men just to carry it! LOL

...Carl

 

[harrygrey382]

That is exactly where I turned up those odd lettered 090 names!

I doubt stihl made an 090 with a bigger engine but you never know!
If they wanted a bigger stroke then they would have needed to modify the bottom end of the crankcase and if they wanted to have a bigger piston then they would have needed to have bored or changed the cylinder too.

If you're talking FrankenStihl......

KS 43 = 68mm Stroke & 68mm Bore
076 = 58mm Stroke & 42mm Bore
090 = 66mm Stroke & 40mm Bore

68mm piston @ 40mm stroke = 145cc (8.8 ci) with the cut down KS 43 cylinder and 090 crank
or
68mm piston @ 42mm stroke = 153cc (9.3 ci) with the cut down KS 43 cylinder and 076 crank
or
68mm piston @ 68mm stroke = 247cc (15.1 ci) with the full KS 43 cylinder and crank.

68mm diameter piston/cylinder is the largest I've heard of in a mass produced chainsaw.

But the 68 is surely well NLA.
an 090 P&C on an 076 case is more realistic... Might be exhaust problems though, that would truly be a frankensaw. I might offer up the 070 jug onto an 076 out of interest of a 144cc brute

 

[Dibbs]

I might offer up the 070 jug onto an 076 out of interest of a 144cc brute

An 070 jug on an 076 would create another 111cc saw as they both have a 58mm bore.

 

[sawbones]

chainsawguy reminded me that the comp buttons are in a different spot.

If you can get the top off you will see that the 66MM release is at 10:00 o clock from rear of saw and the 58MM is at about 11:30 .

these are mahle OEM parts shown.

 

[Brmorgan]

I wouldn't want to be within 50 feet of a ~250cc 090. I can't imagine the flywheel and/or case staying intact for very long, nor do I think there would be sufficient crankcase volume for the engine to run very well. And the vibration would be unbearable.

Don't let that discourage you though. Just because I don't want to be near a saw like that doesn't mean I wouldn't like to see one!

 

[moiaka]

can anyone tell me if I can buy the 6 stone 090 clutch and 4" drum and put it on the 070?
oh and I will take one of those 68mm pistons please.

and if so are these 2 saws the same in the crankcase?

I have an 070 that needs to come back to life and a large collection of 090 parts, thus far it is looking like they are the same saw.

 

[sawbones]

Not to throw a wrench in the works but what would you call a saw with a small 3 shoe clutch and 66mm jug?

Bill

I would call it an early Contra Lightning S. 137cc and 3 shoe clutch.

http://i283.photobucket.com/albums/kk316/mrbigsaw/CIMG1247.jpg

<iframe width="480" height="360" src="http://www.youtube.com/embed/iEWHs6y0BOg?rel=0" frameborder="0" allowfullscreen></iframe>
Stihl lighning contra S pre 090 - YouTube

Same saw.

<iframe width="480" height="360" src="http://www.youtube.com/embed/ybN6wBzkWRU?rel=0" frameborder="0" allowfullscreen></iframe>

Contra S 1st run with Ryan - YouTube