Ugly Stihl 064 overhaul

[Stump Shot]

Thanks Steve!
I just put on in a shopping cart but was waiting until I knew I didn't need anything else.

Huck it outta the cart.

 

[Gullet]

Tip it on its side to pour out the chainsaw seeds.
According to internet lore, if you plant these in the field they will sprout new chainsaws..View attachment 396781

I used to plant the cardboard centers of toilet paper & grew toilet paper all during the Covid Pandemic.

 

[cuinrearview]

I'm going to need you to do a video demonstration, kthanks

If I use anything but Stihl parts does it still count? Do I need a light ring while filming?

 

[redline4]

If I use anything but Stihl parts does it still count? Do I need a light ring while filming?

Yes, and you could always just make @Woodpecker hold a flashlight.
Flashlight.
Not the other item that sounds similar that im sure you 2 are aquainted with..

 

[drf256]

Looking at it in person, the only machine marks are above the top ring land.
I also see no indication that's its a Stihl piston? They are typically proud of their shìt, and nowhere on it is a Stihl logo or name now that I really look at it.
Dunno..

The newer Stihl pistons can have a dot matrix Stihl emblem on their crowns. The old ones don’t. Look inside the skirts. There will either be a K$ symbol or a Mahle In raised letters.

I’d also replace the slug, but why don’t you actually check skirt to cylinder clearance at BDC for shíts and giggles.

 

[Maintenance Chief]

Old 046 piston marks , little bit of carbon would definitely hide them.

 

[redline4]

I found the KS logo.



If I do Tim's "drop the thing into the other thing" test, it actually drops with resistance.

And if I go with a feeler guage between the jug and slug, .0025" is all that fits.

 

[Woodslasher]

I found the KS logo.
View attachment 397319


If I do Tim's "drop the thing into the other thing" test, it actually drops with resistance.

And if I go with a feeler guage between the jug and slug, .0025" is all that fits.
View attachment 397320

Looks like you found the Stihl logo too....

 

[Kiwioilboiler]

Yes, and you could always just make @Woodpecker hold a flashlight.
Flashlight.
Not the other item that sounds similar that im sure you 2 are aquainted with..

Very disappointed that this needed an edit.
I was intrigued at what dylexic sadistic origami pest would call themself @woodphold.

 

[redline4]

Very disappointed that this needed an edit.
I was intrigued at what dylexic sadistic origami pest would call themself @woodphold.

Yeah, I didn't want Brad to feel left out because I can't proofread.

 

[drf256]

I found the KS logo.
View attachment 397319


If I do Tim's "drop the thing into the other thing" test, it actually drops with resistance.

And if I go with a feeler guage between the jug and slug, .0025" is all that fits.
View attachment 397320

If it’s not cracked, that piston still ok to run. If you’re going through all the trouble anyway, a meteor is cheap insurance.

Look inside the skirts for the cast in manufacturer.

 

[Wonkydonkey]

What's you dudes consensus on this piston?
It's got some shiney spots at the bottom edge of the skirt. None of the visible smear marks can be felt.

View attachment 397224View attachment 397225View attachment 397226

The rings are a bit wide for the bore...
View attachment 397227View attachment 397228


So, order piston and rings because I'm right there or order rings and carry on?

@redline4 Put in a new set of Cabers, clean up the piston and call it a day.

I was going to say I would just change the rings, and run it. For a way bit longer. But if your lazy of very busy then a new meteor is cheap and easy while your there.

Anyhow I see your all set what ever route you take

Btw, I know your not lazy and very busy

 

[Vintage Engine Repairs]

Lots of attention to the pics taken, it takes a lot of effort, thanks for bringing us along.

 

[redline4]

I had a few minutes during my lunch hour today.

I hit the inside of the flywheel with a spray of brake cleaner and compressed air to get the crap out of there.


Zapped off the 13mm nut


Installed the puller and popped it off.
Even if you only ever have to do this part twice, these pullers are super cheap and well worth having in your toolbox




And here's the flywheel.


I haven't yet but I plan to reference the 064 coil thread to see what is compatible with it as the coil I have has a pretty rough lead on it

 

[drf256]

I have Stihl lead wire if you need a piece Ed. No need to replace entire coil. I also should have that coil if it’s found to be bad.

 

[redline4]

I managed a few minutes in the shop today.

Unbolt the oil pump


And lift it up


I used a small hammer and a punch to remove the oil line to the bar pad


And then the oil feed hose pops out.



When I'm removing the rubber parts like this oil line, impulse and fuel lines I never worry about being too gentle. If it's going to tear, I want it to now, while it's apart.

 

[redline4]

I removed the remaining 2 antivibe buffers


And this limiter


Peeled off the foil on the case


And had to dig around in here like Maury Povitch looking for a long lost baby daddy


And then removed the 6 case half screws.

 

[redline4]

Took the heat gun to it until it got good and warm and stunk like burning possum


And with the trust rubber hammer, drove 1 side apart.

Repeat on the other side


And it's split.


The bearings felt fine when it was all assembled, but apart the flywheel bearing feels very gritty.

 

[redline4]

Now I'll need to clean parts and put together a parts list..

To circle back to @Glock37 post about the intake and carb box, mine doesn't have callout #6.

Is that outer ring missing on mine or does the older version not use it?

 

[redline4]

Then there's this muffler baffle...


My initial thought to anything like this is make it go away.
Does anyone have a good reason to leave it?