450, I picked up a far from mint type 14 last year and did a refresh. I think the best I could find out on the date was mid 70's. I dont think there is too much info out there. Its a shame. I really like the all metal housing. I just couldn't let this fade into junk. Try Youtube I think I saw at least one video that went over the model years for the No. 77.
I have an all metal 88' Edition Model 77 Type-16 7-1/4" Wormdrive Skilsaw, we used it to death in our New home Landscaping business both wood (Fences, decks, framing, Hardscape forming, you name it carpentry wood cutting wise and went through about oh 9-10 Whitecap diamond blades over the years doing brick, concrete and ceramic tile cutting, so it was not only used hard, but put away wet years ago. The business and a good portion of the tools are long ago sold off, but not that saw.
I pulled it out yesterday and the dreaded armature high sparks, and it tripped my ground fault interrupter circuit in the garage repeatedly.
Pulled it all apart as it needs a complete disassemby, rebuild actually just the armature (ordered it on ereplacementparts.com full disassembly deep dive cleaning to get all the caked former work out of it, it has been through the mill, and storage in the case in AZ high heat summers, led to oil leakage seeping.
The armature is backorder, with no eta, but I will wait as I could not find one avail. anywhere. If I could not order, or if they never are off backorder, I will have all the parts and pcs cleaned and ready to list on ebay. (But, would rather have the new replacemeny armature, and get it back in service, they are great workhorses. I also have the manual and the exploded view parts list. (1988 Skilsaw Model 77 - Type 16) AC 120Volt Armature, but originally they also had a 220 Volt Armature avail. (Saw label actually says DC /AC 120/240 Max 60 Hrz).
We never purchased the 220 Volt AC Armature).
If anyone knows a supplier with the 120 AC Armature's in stock now, please share. Thx.
Cglrcng
