Old post, Serial Numbers and Dates, TSB 185-008 March 1985

[tommyhnavix]

Found this in Parkin Lube Service Memo's info at

www.parkinlube.com/pdfs.aspxdead link

Homelite Dealer Memo # 717 Oct. 1977

www.parkinlube.com/pdfs/Homelite%20Service%20Memos%20700-723%205-77%20through%2010-77.pdf

II. Unit Identification by UT Number
Five digits are always required to describe the unit built according to
the specification of the UT number. Sometimes a sixth digit will be added
to describe certain components included in a particular unit.
Example:
UT104442 six digits instead of five

10442 ~Unit- XL/.375 Chain Saw

2____Identifies Components in Unit

Courtesy of: ParkinLube.com

So when looking for an IPL all you need is the first five digits, the sixth, if you have one, means your saw had some extra component


Also: from Service memo # 756 May 1978

Note: The lot number of a unit consists of the second thru fifth digits
of the serial number. Example: #680740001.
8074= Lot number

[karla48]

Thank you for the information, I have been trying to figure out the UT code & SN code, so with your help, I now think I have it figured out. Again Thanks.

Also a great link full of good stuff.

[undee70ss]

[sweepleader]

The part of the serial number listed as "Lot #" above is listed on many saws separately from what is then called serial number (Serialized Unit # above). It is decoded the same way as noted above. Some saws I have seen have a lot number and a UT, unit number, but no serial number. They can be dated from the lot number. I have not seen anything on how to decode the 6th digit from the UT number. It has been often stated as above that it denotes special components in the saw but no one seems to know how to decode it. The UT number is used for identifying the saw itself and which IPL goes with the saw, the 6th digit appears to be meaningless at this point.