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Author Topic: STIHL 064 troubles  (Read 2827 times)

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Offline Mad Professor

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Re: STIHL 064 troubles
« Reply #20 on: August 10, 2018, 10:59:51 AM »

Here is an example of an adapter, courtesy of Chris from Australia.



 

Offline Cub

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Re: STIHL 064 troubles
« Reply #21 on: August 10, 2018, 04:59:40 PM »
Awesome. Thank you for the picture. I will have to make something up soon as I get a chance. 

Offline Mad Professor

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Re: STIHL 064 troubles
« Reply #22 on: August 10, 2018, 06:42:34 PM »
Chainsaw forum at Arboristsite has lots of stuff on the early 064/bosch coils.

Offline HolmenTree

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Re: STIHL 064 troubles
« Reply #23 on: August 11, 2018, 02:37:28 PM »
Ok. Update. Got the 0000-400-1300 coil. When I went to install only 1 bolt hole lined up with the case? I canít possibly run it this way. Wouldnít after time vibration move the coil around and possibly change the gap or collide with the flywheel? Any help would be appreciated. Thanks in advance
Sorry there buddy.
I should have cross referenced your 064's serial# 112553003 for age ( but you weren't that certain the # was right).
I took for granted your 1122 400 1311 coil on your 064 was original making it a newer 064 to accept the 0000 400 1300 coil I suggested.

If your 064's serial # is correct you have a early first year 1986 064.
I have two 1st year 1986 064s and their #'s are newer then yours.
116468370 and 117584561.
That 1122 400 1311 dogleg Lida coil on your 064 was first installed on 064/066 in 1994 starting with serial# 131067164.

I never did it myself but some reports say the 0000 400 1300 coil you just bought will fit with 2 screws if you flip it upside down and put about a 3 inch longer spark plug cable on it.
Or do the adapter modification Mad Professor showed you.
I got a 0000 400 1300 on my 1991 066 Mag that bolts up just fine and is over 26 years old and still works great. Same with my 064 coil.

Here's my 1986 064 with 2 screw dogleg  Bosch 1122 400 1300 coil that your 064 should be running.


Making a living with a saw since age 16.

Offline Cub

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Re: STIHL 064 troubles
« Reply #24 on: August 13, 2018, 06:40:51 PM »
Mad professor, I read a lot over there about all the coils n flywheel combos. Lots of info. Thank you for the info. 
Holmentree, no worries buddy. You were right I wasnít 100% sure that was the serial number. I tried flipping the coil upside down. It just about fits that way but not quite. So your saying the 1122-400-1300 is what my saw should have? Because I found 1 of those too. Thank you guys for all your help. Lots of knowledge 

Offline HolmenTree

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Re: STIHL 064 troubles
« Reply #25 on: August 13, 2018, 07:52:11 PM »
Yep the 1122 400 1300 coil is what my first year 064 has.
Check that serial # again...that is the info we need.
But you already have a good coil what you just bought . Do the simple adapter mod pictured above with a bent piece of strap steel and 2 screws.
.010" gap between the flywheel magnet and coil.
Making a living with a saw since age 16.

Offline Cub

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Re: STIHL 064 troubles
« Reply #26 on: August 13, 2018, 09:57:13 PM »
Iíll check the number again when I get a chance. Itís pretty hard to see. Yes Iíll just make up a adapter bracket and use the coil I bought. Havenít had a chance to get after it. Thank you again for the info. 

Offline Mad Professor

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Re: STIHL 064 troubles
« Reply #27 on: August 14, 2018, 03:32:42 PM »
Mad professor, I read a lot over there about all the coils n flywheel combos. Lots of info. Thank you for the info.
Holmentree, no worries buddy. You were right I wasnít 100% sure that was the serial number. I tried flipping the coil upside down. It just about fits that way but not quite. So your saying the 1122-400-1300 is what my saw should have? Because I found 1 of those too. Thank you guys for all your help. Lots of knowledge
Unless that is NOS bosch coil, it will crap the bed, even then they die early on, same with the 7!@#%^&* they put in the 056, but there is a cheap fix for those. How long who knows?  
The adapter for a universal coil might be best bet.  I think those have a retard for starting unlike early 064 coils.

Offline Cub

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Re: STIHL 064 troubles
« Reply #28 on: August 17, 2018, 11:21:11 PM »
Rigged up a bracket tonight. Should work. Didnít have any wood in the yard to try it out. But will go find a tree to kill tomorrow in the daylight. Thanks for all your help guys!!! 

Offline Cub

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Re: STIHL 064 troubles
« Reply #29 on: August 20, 2018, 11:10:19 PM »
Alright. Tested out the saw. Cut down a 22 inch white ash. Saw ran great for the notch and back cut. Once the tree was down I limbed it then went back to the butt and started piece cutting 24 inch long blocks. About half way through the fourth cut the saw stumbled all over itself and the only way I could keep it running was hold it wide open and it would just barely idle and it smoked a lot. So I let it die gave it a minute and fired back up and made 4 more cuts and it did the same. Let it die again. Waited a minute fired up made 2 more cuts and it stumbled again. I let it die but this time when I fired it up it and held it wide open it just stumbled. So I just stopped grabbed the 440 and finished the tree. Any ideas? Iím thinking carb issue?

Offline HolmenTree

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Re: STIHL 064 troubles
« Reply #30 on: August 21, 2018, 07:51:08 AM »
That's why I hate doing saw diagnosis over the interenet ::)

You said smoking alot , it's possible there is a leak in the crankcase gasket at the oil tank ......
Do a proper leak test for both the carb and crankcase.
Is the muffler screen plugged.... 
Making a living with a saw since age 16.

Offline Cub

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Re: STIHL 064 troubles
« Reply #31 on: August 30, 2018, 10:41:34 PM »
Anything is possible I guess. I will have to take it to the dealer to have tests done. I donít have the tools for that. Muffler screen is not plugged. Brand new dual port cover. Iíll get it to the dealer n see what they say. 

Offline Mad Professor

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Re: STIHL 064 troubles
« Reply #32 on: September 12, 2018, 06:19:56 AM »
Get a mightyvac for ~ $50.  Won't be much more than a dealer visit.  Do your own pres/vac testing.

Offline Cub

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Re: STIHL 064 troubles
« Reply #33 on: November 03, 2018, 09:37:22 PM »
So update on the 064. Havenít had a need for it since the last post until a few weeks ago. I knew I had problems with it so I took it to the dealer to have them check it out. They through a carb kit in it fuel filter and tuned the carb. Said everything else is good. So once I got it back I used it tge next day and ran a few tanks of gas through it. It ran great. Following weekend I used it again and after I dropped a few big trees it started stumbling again just like before. I quit using it for the day. Got home and tried getting it going. It started but I couldnít get the carb adjusted to a happy place to idle good accelerate good and run good at wot. Took it to the woods with me today to try it again and it wouldnít even start today.  Not sure what else to look at. It has the walboro wj-6 carb on it. 

Offline Mad Professor

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Re: STIHL 064 troubles
« Reply #34 on: November 06, 2018, 11:31:55 AM »
Using a new stihl universal coil w/adapter?

1) pressure/vac test

2)  check all wires from coil/switch for shorts, coil body for good ground to cyl

3) check carb insides/clean it, fuel line + filter

Offline motzingg

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Re: STIHL 064 troubles
« Reply #35 on: November 06, 2018, 01:01:33 PM »
FUN, these are the kind of problems that make people hate working on saws, trimmers, etc.  :D 

I think going down the diagnosis tree, everyone right away jumped over the ignition thing because usually heat related problems are from a coil that is on its way out. 

I would start by switching the coils back to back and seeing if the problem starts back up or gets worse with the old one.  Try to find a test that can reliably turn it 'on' and repeat the test cold, hot, under different conditions. 

I dunno the design of that carb but if it has a rubber check valve it it, that could be the problem.  They will start puking fuel like crazy into the intake, only run wide open, and be blowing a lot of wet unburned fuel exhaust/black goo out the exhaust when that happens, then eventually die. 

I have a BG86 Stihl blower that i rebuilt the carb in, finally threw in the towel and bought a new carb yesterday, rebuild kit didn't fix it, pumping way too much fuel in.  

Offline motzingg

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Re: STIHL 064 troubles
« Reply #36 on: November 06, 2018, 01:08:49 PM »
Ah, just re-read the last post.... maybe that coil bracket moved? 

You say you got a few tanks of gas through it before it conked out, sounds like something else major fail.  Timing slipping for one reason or another. 

Offline Cub

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Re: STIHL 064 troubles
« Reply #37 on: November 07, 2018, 09:57:48 PM »
Mad professor. Yes new coil with adapter. Dealer put new filter and carb kit in it. I thought maybe he pressure/vac tested it because he said everything else was good. Inside of the carb was a little dirty and pump was a little stiff. Maybe he didnít test it. I dropped it off at the dealer to look at again on Monday because he said if I still have problems to bring it back. Said he would look at it Tuesday but I havenít heard from him yet. Motzingg. I know the feeling. Had that on an 026 I worked on for a friend. Rebuild the carb. Still wasnít right so he brought it back. I put a different carb on n itís still running strong. That was 4 years ago. I think it is a carb issue because even when stone cold it wonít start on choke. I have to unchoke it and hold throttle wide open and pull a few times then I can get it to run. But if I continue to hold it wot it doesnít have the power to turn the chain. Just stumbles and smokes like a locomotive. Once I let off the throttle it dies. Thank you guys for all your input and ideas. I really appreciate all the knowledge on here. Hopefully it gets figured out soon. I need my big saw!! ;D


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