Stihl ID please: 064? 066?

[Shaka]

Hello everyone!
Bought myself a christmaspresent today. Used old stihl chainsaw. Thought it was a 044-type, but after some further investigation i think it's rather a 064 or 066.
Problem is I can't tell... Silver plate on the top end is missing, and I can't locate the serial number (usually at the exaustport in the crankcase, but blank here).
I tried measuring the piston with a straw, showed 52mm. Has a lot of compression also, seem in good condition.
Carb is a Walbro WJ-65 751.
Any help or insight would be usefull and much appreciated.
Thanks a lot in advance.
I hope I posted this in the right spot, i'm new around here.

 

[Yukon Stihl]

Looks like a 064 with the meter air filter cover

 

[Jacob J.]

Early 064 with the newer style muffler. It may have had a top end replacement at some point.

 

[PV Hiker]

What about first 4 numbers on some parts?

 

[Bob Hedgecutter]

What about first 4 numbers on some parts?

064 and 066 would both be 1122 on major part numbers.

 

[Shaka]

Thank you all for the replies.
First four number are 1122 on most parts i have found so far.
According to Acres: 52mm should be a 064, whereas 066 would have measured 54mm.

 

[L34]

Look at oil pump
If hose to bar plate 064
If no hose 066

 

[Bob Hedgecutter]

Slip the muffler off- measure the diameter of the cylinder with a drinking straw, 52mm for the 064 and 54mm for an 066.
Oil pumps tell stories- as do cylinder bolts.

 

[Evan]

I think 64 has smaller recoil

 

[Bob Hedgecutter]

I think 64 has smaller recoil

Originally they did have a thinner profile recoil- but nothing to stop a previous owner swapping the wide profile 066 one on if the pawls mate up with the flywheel fitted and if a later one used it gives the added bonus of elastostart handle (as this one does) for non decompression cylinders and cold starting.

 

[Evan]

It looks like the thin recoil to me. I guess that was better way to put it.
Recoils ive found to last well most the stihls ive had have the recoil that stihl put on it at the factory.
All bets are however off ounce us assers basterdize these saws with missmatched parts due to breakage or just cause where assers

 

[Shaka]

As previously mentioned the piston measured 52mm.
Checking the oilpump showed a hose to the bar plate.
Given these facts it will probably indeed be a 064! Thanks again for all the help and information!

 

[president]

Looks like a 064 with the meter air filter cover

T1, Ihad one!

 

[Mad Professor]

Early 064.

I have one but it has the HD air filter update.