Solo 635 or 642

[Madsaw]

Well I got this old monster longtime ago. Been trying to figure out what size it is. On mikes the pic and color for a 635 is yellow and black. Thsi one is yellow and blue. A book I have shows the 642 as about the same shape just differnt bore size. Any ideas? Here is a shot of it too.
Thanks all
Bob

 

[ozflea]

At one stage i had an orange and white Solo 635/642 ? of the same layout as yours except the top cowl was metal not plastic.