Found a little more on atv motor has 168cc stamped on motor. other info found on a website.

ATV Motortek
>> ATV MT-200 / MT-200a

ENGINE
Number of Cylinder : Singer Cylinder
Stroke : 4 Stroke
Displacement : 124 c.c.
Cooling Method : force air-cooled
Bore x Stroke : 52.4 x 57.5 mm.
Compress ratio : 9.4:1
Max Power : 8 hp
Starter : Electric
Drive : Cain
Gear Box : C.V.T.
Now question will parts for 125cc up to 200cc parts work.

 

for all y'all s help I would have had better luck if I had asked my DOG.