05-21-2011, 09:59 PM
It's probably a 37-620, Code 125. This model (and the 37-630, codes 125 and 126) has fewer trimmers, as shown in your photo.
I suggest you contact Chuck Schwark and purchase the proper service information for that particular model.
Oh, and there is no such thing as a 39-620
I suggest you contact Chuck Schwark and purchase the proper service information for that particular model.
Oh, and there is no such thing as a 39-620
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Ron Ramirez
Ferdinand IN