Stihl 064 questions

[isawben]

I was working on an 064, and had some questions about it. I went to take off the air box, and it has 2 plastic rivets holding it to the fuel tank. Can they be drilled out, and the air box will still attach properly, or will it not seal? There is also some sealant around the base, and can find no mention of it being factory. Also, is there supposed to be a ring around the outside of the boot? I’ve seen mentions of many different set ups, but never just this. If it helps at all, the s/n is 116913466

 

[pioneerguy600]

Remove the 7 screws, the airbox will lift off. I can`t remember seeing rivits or adhesive/ sealer on any I have removed.

 

[isawben]

This one only has five screws, and two rivets where it looks like screws should be.

 

[pioneerguy600]

This one only has five screws, and two rivets where it looks like screws should be.

One of a kind.

 

[pioneerguy600]

This one only has five screws, and two rivets where it looks like screws should be.

Did you take the five screws out and try lifting the airbox off?

 

[isawben]

Yes, and the rivets were still holding it down.

 

[pioneerguy600]

Hmm, then the next step would need the heads drilled off the rivets if you really want to take that airbox off.

 

[Bob Hedgecutter]

In my opinion, drilling the rivet heads off is going to generate heat and start melting the rivet head into the plastic- sharp correct sized drill bit and slow speed would be your best bet if we are talking metal pop rivets in place of screws- or are you meaning the plastic locator in the second photo and calling it a rivet?

Next question- why do you need to remove it? If you are swapping out tank bottoms, sure, if the new one came without air box fitted- but if not, leave well alone.
Most all 1122 tank airbox joints I have had anything to do with have clear silicone type adhesive between the orange bit and the white/clear bit.

 

[Patrick1903]

Airbox is on upside down!


Sorry…please continue!

 

[Chevboy0167]

Hmmmm.... the flipside???? Anyone????

 

[Bob Hedgecutter]

Airbox is on upside down!
View attachment 983553

Sorry…please continue!

Maybe it was assembled in Australia?

 

[isawben]

Well, after some thinking I decided to leave well well alone, and not remove the air box. As I continued to go through the saw however, I found the oil line had disintegrated.
Does anyone know if the brass connector is original, or maybe if the line had been broken before and this was an attempted repair? Once again, no mentions in ipls or shop manuals. Thanks for any info,
Ben

 

[Mad Professor]

Well, after some thinking I decided to leave well well alone, and not remove the air box. As I continued to go through the saw however, I found the oil line had disintegrated.View attachment 984417
Does anyone know if the brass connector is original, or maybe if the line had been broken before and this was an attempted repair? Once again, no mentions in ipls or shop manuals. Thanks for any info,
Ben

That don't look like OEM Stihl oil line (fibers). It should be one piece with a wire coil inside to keep it from kinking. Looks like someone didn't use OEM tubing and had to use an elbow to keep the hose from kinking.

That OEM hose is stiff as a sailor on shore leave. Stihl says to use "modified" pliers to install over the barb/nipple on oil pump. I heat the hose gently.

The Stihl hose kit comes with enough hose to do it twice, or once if you screw it up the first time..........

036 has a similar setup. First picture shows the hose cut to length with brass insert installed, wire coil below it. Second one the outlet in the case where the brass brass insert makes the hose an interference fit. Third installed hose.

I use needle nose and a Bic lighter to heat the plastic. Don't heat to much, just enough to get it pliable, or it will mush up when you try to slide it over the barb on the pump. A little oil helps here

 

[isawben]

Well, after about an hour of work, I have decided that I never want to do an oil line installation again. What a pain in the behind. It is installed though, and I cleaned the pump while it was out, and the saw is oiling beautifully now.

 

[Bob Hedgecutter]

Nice work, especially at the pump end- have seen them end up a LOT worse than the factory finish you show here.
But is does appear at the other end, the brass expander is not fully seated inside the plastic tubing.

 

[isawben]

Good eye on the brass fitting, after posting the photo, I realized that and corrected it.

 

[Chevboy0167]

Is this a crack????

 

[isawben]

Thankfully, no. It's just a shadow. That's where the clutch drum wore at one point, for reasons I don't know. However, the groove it made isn't deep enough to go through.

 

[Chevboy0167]

 

[isawben]

Looking at the ipl however, is does show a washer, which wasn't on the saw when I got it. Should that washer be there, and might it be the reason for the wear?