Hey Donny, yesterday a Friend brought in an 066 with a stuck Piston. Never seen that. He was Cuttin 30 inch oak and fried the Piston of that 1996 066 so hard that aluminium was comin out of the Muffler. The Muffler has a silver coating on the Inside. Tomorrow i will dig in it to find the Cause. Maybee Impuls or Boot. Its all stock and 28 Years old. Think it will get a Meteor Top end. Its just a Firewood Saw. So as if you heard about it, you put out this Video😂 Thank you Buddy for sharin!
the red light ignition was just a 12.5k rpm rev limiter with a light that came on when the limiter came on. so tuning - make it rich and then lean until the light came on. as the red light ignition aged the max rpm fell to under 10k.
Hey Donny by chance someday could you show these grinding jigs your talking about please?!?! Ive heard you talk about making porting jigs and whatnot so many times and want to see how the experts such as you and your father made them! I know im not the only one curious about this, and i know it will help us new porters out a lot! Thank you man! Take care and keep the amazing videos coming! Much love from Oregon
066 flat tops came with ks cylinders & aluminum flywheels & the ones that came later had the decomp with mahle cylinders & poly flywheels onto the round top 066's.
Love the knowledge you have. I am left handed and the 500I is the only saw made that cuts right,Reminds of the old mac 81s . Huskies have always had great power but lousy avs till the springs series.
Information for my friend Donny Walker:) Perplexity AI says: The red light on early Stihl 066 chainsaws served two main purposes: Tuning aid: The red light was used to help tune the carburetor. The procedure involved running the saw at full throttle and adjusting the H-screw until the light lit up, then turning it in about an eighth of a turn5 . Indication of proper tuning: When lit, the red light indicated that the saw was properly tuned9 . This feature was specific to the early "red light" models of the Stihl 066 chainsaw. Later versions of the 066 did not include this red light tuning system. PHIND AI says: Based on the search results provided, here are the key points about the purpose of the red light on early Stihl 066 chainsaws: The red light was a rev limiting ignition model of the 066 saw 2. This means it had a specific ignition system designed to limit engine RPM. It did not appear to be just for show - the red light actually served a functional purpose related to how the saw's engine operated 2. The handlebar design on these "red light" models looked different from standard Stihl handlebars and resembled those on Husqvarna or 038 Stihl saws 23. Some users considered the red light feature desirable and wouldn't part with their saws even when upgrading 2. The presence of a red light was likely an indicator that this was a specialized version of the 066 saw with unique engine internals 24. Aftermarket parts like handlebars were sometimes used on these saws to improve ergonomics 3. The red light model may have had different performance characteristics compared to standard 066 saws 4. In summary, the red light served as an identifier for a specific, rev-limited version of the Stihl 066 chainsaw with unique engine internals. It indicated this was not just a cosmetic difference, but rather a functional variation in how the saw's engine operated. Gemini AI says: Here's how it worked: Engine RPM Control: The red light system was designed to limit the maximum engine speed of the chainsaw. When the engine reached a certain RPM threshold (the rev limit), the red light would illuminate, indicating that the engine was approaching its safe operating limit. Preventing Over-revving: This feature helped prevent the engine from over-revving, which could damage internal components like the crankshaft, bearings, and piston. Improving Safety: By limiting engine speed, the red light system also contributed to increased safety for the operator. Note: Later models of the 066 and other Stihl chainsaws incorporated different rev-limiting mechanisms, such as electronic ignition systems. The red light system was a unique feature of early 066 models and is not found on most modern chainsaws. I hope this explanation is helpful! Let me know if you have any other questions.
@donnywalker4691 I think it's really cool you and your family get to do stuff you enjoy messing with saws and all. Saws are my hobby but I rarely get time anymore to play with them. Seems I'm always on the road in this truck. One day tho I'll be able to enjoy them again
@ Well, horse hockey! My saw struggles with a 32” to the point that it seems like it’s overheating. But a 30” pulls like me 28” did, and I am the tuner. I found them in reg Oregon AND Stihl bars. Oregon I can get 050 & 063 while Stihl only offers 063
old parts list Flywheels - aluminum with single keyway unless noted. 1122 400 1201A - 064 for use with Bosch ignition, unlimited coils 1122 400 1202 - 066W, MS660 unlimited, new thicker style for heated handle and carb generator, POLY 1122 400 1203 - 064, 064R for use with limited coils 1303 [92.12ipl] (gap of .2 to .3mm) 1122 400 1203 (double keyway) - 064, 064R for use with limited or unlimited coils Keyway X or B is furthest clockwise for unlimited coils Keyway P is furthest counterclockwise for limited coils 1122 400 1203/1204 - marked with both but only one keyway, normally limited 1122 400 1204 - 064 - limited with retarded start timing (a’ la Mastermind’s pic) 1122 400 1204 (single keyway) - 064 for use with limited coils ONLY 1122 400 1204 (double keyway) - 064 Keyway X or B is furthest clockwise for unlimited coils Keyway P is furthest counterclockwise for limited coils 1122 400 1206 - 064 unlimited for use with Bosch ignition and generator 3500 [87.1ipl] 1122 400 1207 - 064W limited for use with 1303 and generator 4000 or 3500 1122 400 1209 - 066 for limited coils 1122 400 1209/1214 - 066 marked with both numbers but only one keyway 1122 400 1209/1214 - 066 double keyway Keyway X or B is furthest clockwise for unlimited coils Keyway P is furthest counterclockwise for limited coils 1122 400 1210 - 066 for limited coils with generator 1122 400 1214 - 066, 066M unlimited with larger big end bearing from early 1995 [95.01ipl] ** 1122 400 1215 - 066 redeye 1122 400 1216 - 066W unlimited for generator with larger big end bearing early 1995 [95.01ipl] 1122 400 1217P - 066 unlimited Polymer pre 1996 1122 400 1217 - MS650, MS660 (same as 1217p maybe) 1122 400 1218 - 066W unlimited Polymer thin style for heated handle generator Generators 1118 400 4000 - 064W [92.12ipl] 1122 400 3500 - 064W [87.1ipl], 066W [95.01ipl] 1122 400 3501 - 066W, MS660 1122 400 3502 - 066W, MS660 (circa 1999) two windings for carb and handle heat Ignition Coils 0000 400 1300 - 066 Lida standard unlimited “short” mount ** 0000 400 1303 - 066 2nd Lida EY-V unlimited 0000 400 1305 - 066 Lida Standard unlimited 1122 400 1300 - 064, MS640 unlimited, Bosch E1-V “dogleg” mount [87.1ipl] 1122 400 1303 - 064 Prufex CDIC limited (12,000 RPM) Prufex [92.12ipl] 1122 400 1307 - 066 CDIC-A limited (13,500 RPM) including 066 red eye model 1122 400 1311 - 064/066 original Lida EY-V unlimited, easier starting, short life span [95.01ipl], installed starting X 31 067 164 on 064 and 066 1122 400 1312 - 066 poly flywheel three screw mount 1122 400 1314 - 066, MS650, MS660 Lida standard unlimited two screw mount Trigger Units No number shown - 064 September 1987 to mar 3rd 1991 [92.12ipl] Important notes: ** - these items are widely available as good quality aftermarket components 1994 - 066 after X 29 588 002 new crankshaft with better bearing and cage 064/066 after X 31 067 164 new EY-V coil and unlimited flywheel 1995 - 066 Magnum USA model only OSHA noise reduction changes from # X 31 980 509. 066 first decompression valve # X 32 231 689. 064/066 after # X 31 815 798 crankcases have 4 mounting holes for brake cover instead of 3. 1996 - 066 after # X 33 917 066 all of the following - larger big end bearing, longer crankshaft with different ignition taper and larger threads, new crankcase, lightweight poly flywheel 1122-400-1217, new unlimited coil 0000 400 1303, 1997 - 064/066 after X 33 459 523 first plastic name badge 064/066 after x 35 661 524 new style tank valve/tank housing 064/066 after X 36 262 047 new oil-less HD air filter 064/066 after X 38 139 451 another new tank vent 1998 - 066 after X 39 176 186 EPA certified, limiter caps on WJ-69 carb, new cylinder timing, Smaller exhaust openings 2002- MS660 introduced
Have you ever worked on a husky 2100 as far as porting? I have one apart that EC burt built as a hot saw in the early 80s i need help on ....the port work is crazy on it and im not sure how to set it back up ....its got a cut head ect ...i stuck it using methonl need help
The Stihl 064 is also a great saw. I started logging in 1990 with a Stihl 064 that I still cut with today. I've run both 064's and 066's ( the 066 flat top in my avatar being one of them) since new, both are great saws. Check out Dyno Joe's build on a really clean 064 that has the stock cylinder and piston putting out impressive power. A sharp chain, proper tune, good mix oil and gas, and good maintenance will keep these saws alive for a lifetime. Enjoy.
@@230e4 Thanks for your comment. I have used my 064 in the past. A recent new piston and ring plus some tweaking has made it difficult to pull. I'm 70 with a ventral hernia. Thinking of the hybrid build so I could have a decomp
@ToddAdams1234 066 starter assembly comes up 1122 080 2110 and 064 comes up 1122 080 2105. It's possible one can be made to fit but they are different parts.
@ I understand that those things are different pt#’s, but I’ve seen it done and it was beautiful due to the fact that the 064 assembly is actually thinner. If you want to go on a deep dive, you can check out the Forestry Forum. There’s a member on there (Holmen Tree) that put it on his 066 with the express goal of making his 066 lose weight. If memory serves correctly, he managed to lose almost 2lbs. It was astonishing!
@ToddAdams1234 that's a lot of weight on a saw! 064s are pretty reasonable weight for sure. Lots of people put 066 top ends of them. Maybe someday I'll try. I have one in nice shape that I just rebuilt, a bunch of saved up parts for a "Sunday saw" and carcasses I'll eventually use or assemble into work saws.
????????????? Since the subject had come up in the comments, I posted a fairly concise explanation this morning about how to generally date Stihl saws even though the serial numbers never contained date information...., and the post disappeared. Intentionally deleted? I'm curious to learn about any rational explanation.
Donny, please check your email, Ray Benson sent PDF files to help you with the Red Light 066 saw!!! I hope it helps you and your Dad out in life. Bless both of you!
Donny, the last time that “I”, Shelly was just a girlfriend but just now you said “the wife” was cooking dinner. When did you get married, or were you just being a “private” man?
The older I get, the more attracted I am to things that are labeled as...."classic"!
Like us haha
But if they are advertised as vintage or antique double or triple the price 😂
Love watching you work Donny, thanks for sharing!
Thanks for watching
I love those mid size huskies also.
There awesome little saws
Awesome job. Thanks for sharing. Stay safe, and God bless
I've got a 066 and 2 660 magnums. Going to send one over to you soon for a once over. Talk soon Donny..great video 💪🪓🍁
A great video, Donny! I love learning about the history of saws and hearing your saw stories! I’m on the look out for a red light 😊
Hey Donny, yesterday a Friend brought in an 066 with a stuck Piston. Never seen that. He was Cuttin 30 inch oak and fried the Piston of that 1996 066 so hard that aluminium was comin out of the Muffler. The Muffler has a silver coating on the Inside.
Tomorrow i will dig in it to find the Cause. Maybee Impuls or Boot.
Its all stock and 28 Years old.
Think it will get a Meteor Top end.
Its just a Firewood Saw.
So as if you heard about it, you put out this Video😂
Thank you Buddy for sharin!
That’s crappy rebuild er ya
Stihl 066 💪🏽🤩😎🤯
🪵👍
Great Video Donny !! Thanks 👍👏
Thank you
the red light ignition was just a 12.5k rpm rev limiter with a light that came on when the limiter came on. so tuning - make it rich and then lean until the light came on. as the red light ignition aged the max rpm fell to under 10k.
Interesting, might put the tach on mine and see where the lights at next time I bring it out.
And then a quarter turn back rich, if I remember correctly.
Ok I get it cool thanks 🪵👍
Ok I get it cool thanks 🪵👍
Very informative as always..
“Fallers with sensitive hands had to run the husky’s” no truer statement has ever been said!
Great video thanks
Donny those tools only should be used too pull the cranks into bearings that are already installed in case
Hey Donny by chance someday could you show these grinding jigs your talking about please?!?! Ive heard you talk about making porting jigs and whatnot so many times and want to see how the experts such as you and your father made them! I know im not the only one curious about this, and i know it will help us new porters out a lot! Thank you man! Take care and keep the amazing videos coming! Much love from Oregon
066 flat tops came with ks cylinders & aluminum flywheels & the ones that came later had the decomp with mahle cylinders & poly flywheels onto the round top 066's.
Yes for sure
Love the knowledge you have. I am left handed and the 500I is the only saw made that cuts right,Reminds of the old mac 81s . Huskies have always had great power but lousy avs till the springs series.
Yes for sure
from stihl usa How can I tell when my STIHL chainsaw was made?
STIHL does not incorporate production dates into our serial numbers.
Information for my friend Donny Walker:)
Perplexity AI says:
The red light on early Stihl 066 chainsaws served two main purposes:
Tuning aid: The red light was used to help tune the carburetor. The procedure involved running the saw at full throttle and adjusting the H-screw until the light lit up, then turning it in about an eighth of a turn5
.
Indication of proper tuning: When lit, the red light indicated that the saw was properly tuned9
.
This feature was specific to the early "red light" models of the Stihl 066 chainsaw. Later versions of the 066 did not include this red light tuning system.
PHIND AI says:
Based on the search results provided, here are the key points about the purpose of the red light on early Stihl 066 chainsaws:
The red light was a rev limiting ignition model of the 066 saw 2. This means it had a specific ignition system designed to limit engine RPM.
It did not appear to be just for show - the red light actually served a functional purpose related to how the saw's engine operated 2.
The handlebar design on these "red light" models looked different from standard Stihl handlebars and resembled those on Husqvarna or 038 Stihl saws 23.
Some users considered the red light feature desirable and wouldn't part with their saws even when upgrading 2.
The presence of a red light was likely an indicator that this was a specialized version of the 066 saw with unique engine internals 24.
Aftermarket parts like handlebars were sometimes used on these saws to improve ergonomics 3.
The red light model may have had different performance characteristics compared to standard 066 saws 4.
In summary, the red light served as an identifier for a specific, rev-limited version of the Stihl 066 chainsaw with unique engine internals. It indicated this was not just a cosmetic difference, but rather a functional variation in how the saw's engine operated.
Gemini AI says:
Here's how it worked:
Engine RPM Control: The red light system was designed to limit the maximum engine speed of the chainsaw. When the engine reached a certain RPM threshold (the rev limit), the red light would illuminate, indicating that the engine was approaching its safe operating limit.
Preventing Over-revving: This feature helped prevent the engine from over-revving, which could damage internal components like the crankshaft, bearings, and piston.
Improving Safety: By limiting engine speed, the red light system also contributed to increased safety for the operator.
Note:
Later models of the 066 and other Stihl chainsaws incorporated different rev-limiting mechanisms, such as electronic ignition systems.
The red light system was a unique feature of early 066 models and is not found on most modern chainsaws.
I hope this explanation is helpful! Let me know if you have any other questions.
Thank you they were something alright
Red light tuning lean out and half turn more I use a quarter turn
I still have mine used it yesterday to cut eucalyptus firewood
A little thread sealer kept my adjusting screws from vibrating out of adjustment on my Ms 440
Good video. I’m sending you an Echo 7310 in a couple of weeks. I guess the postal service has been on strike.
You will really like the tools from Matt Olson. I have them and they work great.
O66 might be the best saw ever made but the are heavy as all get out. I like a 044 or 440 size saw myself
There heavy but yes the 440 are great saws yes
@donnywalker4691 I think it's really cool you and your family get to do stuff you enjoy messing with saws and all. Saws are my hobby but I rarely get time anymore to play with them. Seems I'm always on the road in this truck. One day tho I'll be able to enjoy them again
🎉
Donny, unrelated to this vid, but does Walkers offer a 30” lightweight bar in D009? I’ll say why if it matters.
I don’t think so
@ Well, horse hockey! My saw struggles with a 32” to the point that it seems like it’s overheating. But a 30” pulls like me 28” did, and I am the tuner. I found them in reg Oregon AND Stihl bars. Oregon I can get 050 & 063 while Stihl only offers 063
@ what saw ya running
Do you not work at Walkers anymore.
old parts list Flywheels - aluminum with single keyway unless noted.
1122 400 1201A - 064 for use with Bosch ignition, unlimited coils
1122 400 1202 - 066W, MS660 unlimited, new thicker style for heated handle and carb generator, POLY
1122 400 1203 - 064, 064R for use with limited coils 1303 [92.12ipl] (gap of .2 to .3mm)
1122 400 1203 (double keyway) - 064, 064R for use with limited or unlimited coils
Keyway X or B is furthest clockwise for unlimited coils
Keyway P is furthest counterclockwise for limited coils
1122 400 1203/1204 - marked with both but only one keyway, normally limited
1122 400 1204 - 064 - limited with retarded start timing (a’ la Mastermind’s pic)
1122 400 1204 (single keyway) - 064 for use with limited coils ONLY
1122 400 1204 (double keyway) - 064
Keyway X or B is furthest clockwise for unlimited coils
Keyway P is furthest counterclockwise for limited coils
1122 400 1206 - 064 unlimited for use with Bosch ignition and generator 3500 [87.1ipl]
1122 400 1207 - 064W limited for use with 1303 and generator 4000 or 3500
1122 400 1209 - 066 for limited coils
1122 400 1209/1214 - 066 marked with both numbers but only one keyway
1122 400 1209/1214 - 066 double keyway
Keyway X or B is furthest clockwise for unlimited coils
Keyway P is furthest counterclockwise for limited coils
1122 400 1210 - 066 for limited coils with generator
1122 400 1214 - 066, 066M unlimited with larger big end bearing from early 1995 [95.01ipl] **
1122 400 1215 - 066 redeye
1122 400 1216 - 066W unlimited for generator with larger big end bearing early 1995 [95.01ipl]
1122 400 1217P - 066 unlimited Polymer pre 1996
1122 400 1217 - MS650, MS660 (same as 1217p maybe)
1122 400 1218 - 066W unlimited Polymer thin style for heated handle generator
Generators
1118 400 4000 - 064W [92.12ipl]
1122 400 3500 - 064W [87.1ipl], 066W [95.01ipl]
1122 400 3501 - 066W, MS660
1122 400 3502 - 066W, MS660 (circa 1999) two windings for carb and handle heat
Ignition Coils
0000 400 1300 - 066 Lida standard unlimited “short” mount **
0000 400 1303 - 066 2nd Lida EY-V unlimited
0000 400 1305 - 066 Lida Standard unlimited
1122 400 1300 - 064, MS640 unlimited, Bosch E1-V “dogleg” mount [87.1ipl]
1122 400 1303 - 064 Prufex CDIC limited (12,000 RPM) Prufex [92.12ipl]
1122 400 1307 - 066 CDIC-A limited (13,500 RPM) including 066 red eye model
1122 400 1311 - 064/066 original Lida EY-V unlimited, easier starting, short life span [95.01ipl], installed starting X 31 067 164 on 064 and 066
1122 400 1312 - 066 poly flywheel three screw mount
1122 400 1314 - 066, MS650, MS660 Lida standard unlimited two screw mount
Trigger Units
No number shown - 064 September 1987 to mar 3rd 1991 [92.12ipl]
Important notes:
** - these items are widely available as good quality aftermarket components
1994 -
066 after X 29 588 002 new crankshaft with better bearing and cage
064/066 after X 31 067 164 new EY-V coil and unlimited flywheel
1995 -
066 Magnum USA model only OSHA noise reduction changes from # X 31 980 509.
066 first decompression valve # X 32 231 689.
064/066 after # X 31 815 798 crankcases have 4 mounting holes for brake cover instead of 3.
1996 -
066 after # X 33 917 066 all of the following - larger big end bearing, longer crankshaft with different ignition taper and larger threads, new crankcase, lightweight poly flywheel 1122-400-1217, new unlimited coil 0000 400 1303,
1997 -
064/066 after X 33 459 523 first plastic name badge
064/066 after x 35 661 524 new style tank valve/tank housing
064/066 after X 36 262 047 new oil-less HD air filter
064/066 after X 38 139 451 another new tank vent
1998 -
066 after X 39 176 186 EPA certified, limiter caps on WJ-69 carb, new cylinder timing,
Smaller exhaust openings
2002-
MS660 introduced
You got it all figured good stuff thanks I new some of that but thank you for sure
Have you ever worked on a husky 2100 as far as porting? I have one apart that EC burt built as a hot saw in the early 80s i need help on ....the port work is crazy on it and im not sure how to set it back up ....its got a cut head ect ...i stuck it using methonl need help
I never had a chance to buy a used 066 at a good price, but I did buy an 064 at a bargain. What's your opinion of the 64? I want to build a hybrid
The Stihl 064 is also a great saw. I started logging in 1990 with a Stihl 064 that I still cut with today. I've run both 064's and 066's ( the 066 flat top in my avatar being one of them) since new, both are great saws. Check out Dyno Joe's build on a really clean 064 that has the stock cylinder and piston putting out impressive power. A sharp chain, proper tune, good mix oil and gas, and good maintenance will keep these saws alive for a lifetime. Enjoy.
@@230e4 Thanks for your comment. I have used my 064 in the past. A recent new piston and ring plus some tweaking has made it difficult to pull. I'm 70 with a ventral hernia. Thinking of the hybrid build so I could have a decomp
@@230e4 I checked out Dyno Joe's 064 video and realized that I had watched it a while back
@@230e4 I checked out Dyno Joe's website. He has all the equipment, impressive !!
Gotta a question Donnie, 064 the same as 066? Parts interchangeable?
There is actually very little that interchanges. Cases are completely different, top covers, oilers, tank/ handle assys, carbs, cranks, flywheel...
@@nathansihlis4866I’m fairly certain that you “can” put the starter from the 064 on the 066, but that’s 2nd hand info.
@ToddAdams1234 066 starter assembly comes up 1122 080 2110 and 064 comes up 1122 080 2105. It's possible one can be made to fit but they are different parts.
@ I understand that those things are different pt#’s, but I’ve seen it done and it was beautiful due to the fact that the 064 assembly is actually thinner. If you want to go on a deep dive, you can check out the Forestry Forum. There’s a member on there (Holmen Tree) that put it on his 066 with the express goal of making his 066 lose weight. If memory serves correctly, he managed to lose almost 2lbs. It was astonishing!
@ToddAdams1234 that's a lot of weight on a saw! 064s are pretty reasonable weight for sure. Lots of people put 066 top ends of them. Maybe someday I'll try. I have one in nice shape that I just rebuilt, a bunch of saved up parts for a "Sunday saw" and carcasses I'll eventually use or assemble into work saws.
?????????????
Since the subject had come up in the comments, I posted a fairly concise explanation this morning about how to generally date Stihl saws even though the serial numbers never contained date information...., and the post disappeared. Intentionally deleted? I'm curious to learn about any rational explanation.
Donny, please check your email, Ray Benson sent PDF files to help you with the Red Light 066 saw!!! I hope it helps you and your Dad out in life. Bless both of you!
Thanks
Donny, the last time that “I”, Shelly was just a girlfriend but just now you said “the wife” was cooking dinner. When did you get married, or were you just being a “private” man?