ATC 70/TRX 70 Question

[Fungo Wizard]

What is the difference in the pull start assembly between the 73-74 and 78-85 ATC's and the 86-87 TRX? Will all these interchange? I notice the springs have different part numbers for the 78-85 ATC compared to the 86-87 TRX. What is interchangable on these guys? I realize the 73-74 doesn't have the neutral idicator built in, but not knowledgable on the differences in the pull starts assemblies with other models. Thanks for your help.

[Fungo Wizard]

So I see everyone has the same questions about the pull start. Come on, no one!!!!!

[ezmoney1979]

This was just discussed in the newb section- http://www.3wheelerworld.com/showthread.php/137169-ATC70-pullstarter-differences . Kinda like the 90-110-125 pull starters, they look the same but the depths changed a little.

[Fungo Wizard]

Awesome thanks. So what are the differences in the spring?

[jensenracing77]

73-74 and 78-81 ATC 70 are all the same. 82-85 ATC70 are all the same. the guts on everything from 78-85 are the same. 73-74 guts will work in all the others but have a slight difference in the little cover plate to the pawls. the 86-87 TRX 70 is an entirely differant animal and nothing from it will work on the ATC.

[Fungo Wizard]

Thanks for the info. So I am going to have to order that expensive spring for the 87 TRX then.

[KASEY]

there are 2 different housings for the ATC and one for the trx's as you can see by the picts . the trx is totally different inside too..
the trx is the one on the right side .. the narrow housing is the early years...
http://i1141.photobucket.com/albums/n592/KASEYII/DSC00003-2.jpg

http://i1141.photobucket.com/albums/n592/KASEYII/DSC00002-4.jpg

http://i1141.photobucket.com/albums/n592/KASEYII/DSC00001-1.jpg

[Fungo Wizard]

Thanks Kasey! I can't get the pics to open here but I will look at them when I get home. The spring is my biggest issue. I seem to have gotten lucky and gotten pull starts on all the 70's I bought except one. My 87 TRX needs a spring though.

[oldtime3wheeler]

My 87 trx70 had a broken recoil spring when I bought it. I used a brand new spring for a 78-85 atc70. It fit and 2 years later when I sold it it was still working fine.