Stihl 066

[Jellywizzle]

Hi all.
I was wondering if anyone could help me identify the year of manufacture for an 066 I just picked up.
Serial on the body of the saw is 141532724
See attached photo

 

[Mad Professor]

Hi all.
I was wondering if anyone could help me identify the year of manufacture for an 066 I just picked up.
Serial on the body of the saw is 141532724
See attached photo

I'd guess 1998-1999

This was copied from a recent thread on another site

Holmentree

Ok I got some Stihl 066 #'s.

Big thankyou to Definitive Dave for collecting the information.

▪︎Early 1994 cylinder base got thicker going from M6x20 screws to M6x25.
▪︎Mid 1994 beefed up PTO crankshaft bearing with 13 roller bearings from 12.New rubber coated cylinder base gasket after serial#129 588 002.
▪︎Early 1995 in the USA OHSA forced the discontinuation of the dual outlet Magnum muffler after serial# 131 960 509 dropped from 7.8 to 7.2 hp
▪︎Early 1996 new poly flywheel and increased crankshaft taper and larger bearing from 13.5mm to 15.4mm after serial#133 917 066.
▪︎Mid 1996 decompression valve installed on all 066 from serial #133 980 509.
▪︎1997 first plastic name badge on top cover after serial #134 459 523
▪︎Early 1998 Shrouds and filter changed from square to rounded.
Limiter caps on carb, detuned porting and EPA labeling after serial#139 176 186?
▪︎Late 2002 model changed to MS660.
▪︎066 March15 1991 to September 15 2002.
MS660 October 15 2002 to ?? 2014.
My 1986 064 is serial# 116 468 370
My 1992 066 is serial# 126 316 881
My 1997 066 is serial# 134 989 911

 

[Jellywizzle]

cheers mate. Any recommendations on things to do to it? Its needs a new muffler so is getting a hyway dual port on it. Along with the normal stuff, new filters, AV mounts etc.

 

[Mad Professor]

cheers mate. Any recommendations on things to do to it? Its needs a new muffler so is getting a hyway dual port on it. Along with the normal stuff, new filters, AV mounts etc.

Use OEM parts not Chinesium. I muffler might be O.K.? But I bet it thinner and cheaper steel.

If you can find a dead late 066 that could be a good parts resource, except for stuff you want new (filters, hoses, etc....)