Attex 6x6 with JLO Rockwell 1972 Engine

[ANDAARON23]

Looking for model number and year of this Attex.
I've been told:
1969(ish)
297 or 300d or even 400

Also I'm replacing the belt but the belt that came out does not appear to be correct. I'm thinking it was modified to work but could be wrong.
Belt that came out says: Bombardier 414-3758 2.9 79
Thanks!

[Andyman]

Try here, there is a allot of good info in the manuals section that will help. This is just one page.

http://www.6x6world.com/images/attex-atv/1972-Attex-ATV-Manual-17.jpg

[ANDAARON23]

Also the belt that came out, Bombardier 414-3758 2.9 79, is only 3/4" wide. The replacement is 44" length x 1-5/16" wide (Ski-Doo Dayco Part #HP3019). Do you think the belt was just worn down from 1-5/16" to 3/4"? Over 1/2" of wear?

[ARGOJIM]

Belt should be 1" give or take 1/16

[johnedwardketch]

thats not a super chief no way st 300 period jlo 297

[ARGOJIM]

Looking for model number and year of this Attex.
I've been told:
1969(ish)
297 or 300d or even 400

Also I'm replacing the belt but the belt that came out does not appear to be correct. I'm thinking it was modified to work but could be wrong.
Belt that came out says: Bombardier 414-3758 2.9 79
Thanks!

Year is about impossible on those, maybe check the clutches if there is a date but doubt it, serial is on a sticker on the center of dash but probably gone, model is on a sticker on front side corners under that paint but our guess is probably 300. If it has round axles and 7000 transmission it's probably 300, if it has square inner half of axles and 5000 transmission it's 297, the outer axle bearing holders were also different. Other than that same machine basically with the 300 being later.
The 297 and 300 are the same engine with the bore being larger in the 300 though all parts are the same, except perhaps on 297 the head and jug having 5 studs instead of 6 of the 300.



40 years of who knows could have upgraded the 297 to a 300