Author Topic: '88-'89 ATK250  (Read 1592 times)

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Offline YUMASTEPSIDE

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'88-'89 ATK250
« on: October 18, 2015, 01:55:38 PM »
Anyone got a manual for an 88-89 ATK 250 air cooled ?? or at least a manual or some sort of instructions for the Rotax motors they used in them.This one came in a box along with a complete.....well, pretty much complete.....roller, even has that weird primary sprocket mounted disc brake :o ???

                      Roger

..........come on Nathan, this should interest you !! ;)

Offline Nathan S

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Re: '88-'89 ATK250
« Reply #1 on: October 18, 2015, 04:04:26 PM »
Sounds good Roger. I can even get it back to Australia this week.
Thanks!
The good thing about telling the truth is that you don't have to remember what you said.

Offline evo550

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Re: '88-'89 ATK250
« Reply #2 on: October 23, 2015, 11:50:01 AM »
Here's one for a 406, same motor but with a bigger slug ?
http://auto.manualsonline.com/manuals/mfg/atk_motorcycles/406.html?p=21

HeavenVMX

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Re: '88-'89 ATK250
« Reply #3 on: October 23, 2015, 09:00:02 PM »
I thought the 250 engine is rotary disc valve while 406 is crank case reed valve?

Offline mustanggrahame

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Re: '88-'89 ATK250
« Reply #4 on: October 23, 2015, 09:45:33 PM »
Yes
RT1, DT1F, MX100A, TY80A, YZ80D, DT125E, CR125RE, 1982 KTM125RV, 1985 Can Am ASE, 1989 YZ250WR, 1991 YZ250WR

Offline YUMASTEPSIDE

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Re: '88-'89 ATK250
« Reply #5 on: October 24, 2015, 05:50:01 AM »
...........correct! thanks for the link, but unfortunately the two motors have different types of induction.

                           Roger

Offline Lozza

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Re: '88-'89 ATK250
« Reply #6 on: October 24, 2015, 11:08:53 AM »
Rotax engines don't usually have manuals as such just exploded parts books. Good news is they are similar across the range with many common parts.
Jesus only loves two strokes

Offline YUMASTEPSIDE

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Re: '88-'89 ATK250
« Reply #7 on: October 24, 2015, 05:36:47 PM »
............OK,so does someone have an exploded parts diagram book for an '88-'89 ATK250 air cooled?   8) ;) ::)

                    Roger

HeavenVMX

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Re: '88-'89 ATK250
« Reply #8 on: October 24, 2015, 06:17:35 PM »

Offline Lozza

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Re: '88-'89 ATK250
« Reply #9 on: October 26, 2015, 06:54:19 PM »
the exploded diagram in the "engine tech notes" should be very close for any rotary valve rotax .The gearbox should be the same for a reed valve

thanks for the link
Jesus only loves two strokes

Offline evo550

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Re: '88-'89 ATK250
« Reply #10 on: September 15, 2016, 09:33:57 PM »

Offline supermotomc

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Re: '88-'89 ATK250
« Reply #11 on: November 09, 2016, 11:43:39 AM »
Not a problem Disc timing  is the paramount, there  are  3 possible all marked by casting marks, would need to see your Dise to confirm which one is for yours
there early TNT - late Canam  THEN SWM

Offline evo550

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Re: '88-'89 ATK250
« Reply #12 on: November 09, 2016, 11:56:36 AM »
Not sure if this is still needed, original post was over 12 months ago, but I think this is what your looking for Yumastepside..
http://www.atkusa.com/manuals/Rotax/Service/250-406AC%20Rotax%20Repair%20Manual.pdf