No electric start on AG's

Almost convinced myself that one year had the advance cam involved like one year DT175 but don't think that one had the compression relief hole in the cylinder.
Parts diagrams i can't find easily.

I must apologize for my interpretation…
When I see AG.. all I can see is agriculture, which coincides with RT325… very interesting topic!
Sneezles61

I may have some information , that may help somewhat .
Combing through my parts books for Oceania market AG 175 and CT2 .
AG 175  ( 482 )
Cylinder    up to # 15,000           482-11311-00
                20,101 on                 482-11311-10

Cylinder Head                           314-11111-01-94

CT2  ( Au / NZ )

Cylinder                                   314-11311-01

Cylinder Head                          314-11111-00


CT2  ( US )

Cylinder                                   314-11311-00

Cylinder Head                          314-11111-01-94

That seems to confirm spec differences between US and Oceania CT 2/3 porting ,
and possible variations in the AG porting spec , or maybe just the addition of the Bleed Drilling to the exhaust port .
 

Thanks SWOOP. Hard to find out much by googling older AG's.

P.S.  74-75 DT175 cylinder should be a 443...  not 433.. 

 cullysyamaha.com.au/pages/yamaha-parts
Just googling & found this list with the advance governor hand written in on the site above but doesn't show in the pic. So it did exist at least [thought i was losing it lol].
If you go to "75 AG175 then image it doesn't show it but go to parts & as i say hand written in.
Ad's have a heavier flywheel too.

Interesting topic.
Not hard to believe the AG175 is a tuned down version, given that it was marketed as more of a agricultural machine.
Found an AG cylinder 482-11311-00 for sale on ebay and you can clearly see the hole inside the exhaust port.
Anyway here's some more info I found.
 

Off topic>Don't forget the 74 MX 6 speed fits in the CT case, correct Mark?

74 MX125 or YZ125 trans will fit CT but it's a 5 speed. 

First 6 speed was 76 YZ125 and MX125?  They are not a direct bolt in...  mostly because you need a 6 speed shift drum.

6 speed in CT case requires fabrication of a shift drum and internal shift linkage, and parts from several models.