My new project

[farmerbrown 36]

My new project. I hope some on here have knowledge of these ATC90s because I may need advice on rebuilding it. My dad rode this one as a kid and he would like it to run and I need something to work on in my spare time. So I've got myself a project. The gearshift moves freely and the neutral indicator works but I can't get it to turn over with just the pull rope. I'm gonna get it in the shop tomorrow and start tearing it apart

Edited May 15, 2022 by farmerbrown

[Velvetlinedcasket 20]

That will be a fun project! Good luck with the build.

[jeepwm69 6,601]

Build thread please!  Lots of pics!

[farmerbrown 36]

I'm getting it torn apart. It looks like ill need new rings alternator, tires, rear axle, and gaskets and more that I can't think of right now. The jug looks good and the piston looks good. The transmission seems to work fine. The picture showing the Philips head bolt that is stripped out I can't get my Dremel down there to cut a slot to use a flathead screw driver and I need some ideas on how to get that out

[Fishfiles 17,099]

Do you know what a hammer impact driver is ?  Looks like this , you hammer it whilst putting turning pressure on it -------   And get some  Japanese industrial Phillips bits for the future --------     looks pretty rusted up in there 

 

Here is the pic I forgot to post up 

[THH 248]

I second what Fish said, the hammer impact driver works quite well along with the JIS bits.

Put the Phillips tip in the screw head and tap it with hammer to re-shape before putting tip in the impact and then turn impact to left to take up slack before hitting with hammer.

Good luck!

[farmerbrown 36]

I'm done tearing apart for tonight. I got that screw out with a small battery impact driver. Believe it or not the alternator works so we may not have to replace that. Im just about shot. 

[farmerbrown 36]

I got the engine off and am working on rewiring it. I put some vinegar in the gas tank and it uncovered some holes I couldn't see before (see pic). Can this be sealed with gas tank liner or will I have to take extra measures. They are about the size of a pin head.

[jeepwm69 6,601]

I would think some Red Kote would seal that up.  You might smear some JB weld on the bottom side, let it harden, THEN do the tank liner.

[farmerbrown 36]

Ok thanks for the advice. I got the wiring harness tested and repaired and washed and prepped for painting the frame today.

[Fishfiles 17,099]

The local radiator shops in the New Orleans area will dip and coat my tanks , the one I use  still has a caustic tank , they dip it  , all the paint comes off , then they apply the liner inside , they use to charge $90 , bet they went up with the plandemic and inflation 

[farmerbrown 36]

I hink im done taking stuff apart! I have to paint alot of stuff yet. I m working on the fuel tank now.

[farmerbrown 36]

Just ordered a bunch of parts. Boy isn't that fun.

[LedFTed 1,033]

when ya get JB Weld, if ya do, get the slow drying kind, seems to hold better. sets in 4-6 hours, full cure 15-24 hours. i've used the fast cure, i dont like it as much. wont buy any more.

[LedFTed 1,033]

On 5/16/2022 at 5:30 PM, Fishfiles said:

Do you know what a hammer impact driver is ?  Looks like this , you hammer it whilst putting turning pressure on it -------   And get some  Japanese industrial Phillips bits for the future --------     looks pretty rusted up in there 

 

Here is the pic I forgot to post up 

i got an old craftsman like that.

[farmerbrown 36]

I having trouble getting this front axle apart. If I understand the manual properly those spacers on each side of the hub should just slide off. Well they don't. I've tried heat wd40 a pipe wrench to try to twist it and I'm trying to figure out a way to use the shop press but I can't get it to budge. I can't get an pictures to upload now so I'll try again in a bit

[farmerbrown 36]

heres the pic

[Fishfiles 17,099]

What year is it ?  You say it is it a 90 , could it be a 70 ?  I don't see a print for  a 90 , but do see a 70 ..... 

[farmerbrown 36]

47 minutes ago, Fishfiles said:

What year is it ?  You say it is it a 90 , could it be a 70 ?  I don't see a print for  a 90 , but do see a 70 ..... 

The vin says 1976 ATC90 and the plastics say ATC90 but out of curiosity where did you see 70

[Fishfiles 17,099]

Your right ,  1976 ATC90 >>>   I was not going back that far , 1976 is as far back  as Partzilla goes with ATCs and 90 was the only one that year   , 1978 was the first year for  the 70 

 

Here are a copy of prints , quite a few spots it could be froze up at 

 

 

 

  

[Fishfiles 17,099]

That 90 was the first one , good read :

 

https://atvconnection.com/articles/honda-atv-history-in-the-beginning-3/

[farmerbrown 36]

3 hours ago, Fishfiles said:

That 90 was the first one , good read :

 

https://atvconnection.com/articles/honda-atv-history-in-the-beginning-3/

Yep that's a good read. In school I did a research report on the history of Honda atvs and I thought I had read every thing there was a bout atcs but I must have missed that one.

 

 

I am working on the front axle now. There appears to be a spacer on each ide of the hub to keep the hub centered and those spacers should slide right off but they rusted onto the axle.

 

5 hours ago, Fishfiles said:

Your right ,  1976 ATC90 >>>   I was not going back that far , 1976 is as far back  as Partzilla goes with ATCs and 90 was the only one that year   , 1978 was the first year for  the 70 

 

Here are a copy of prints , quite a few spots it could be froze up at 

 

 

 

  

 

[Goober 1,547]

Here’s a good looking tank for ya

[Fishfiles 17,099]

That 90 is a good project , first year is always collectable 

 

I have told this story before , you may not have heard it  or have not read it in your research for your report in school , but it is such a cool story to me being a equipment mechanic who really likes Takeuchi machinery and motorcycles :

 

 After WWII , Japan was in need of a form of cheap transportation , a guy  named Takeuchi started putting air cooled engines on bicycles , he became good at it and  caught Honda's eye , Honda hired him as a research and development guy to work on all terrain machines , he designed and built that 90 you got there as his first attempt that made it to market  , Honda was always very competitive for racing and still is , Honda  wanted to win the Baja 500 race badly at the time  and they put Takeuchi to task , the rest is history , he made the ATC250R ,TRX250R,   ATC350X and a few other legends , and won Baja races like  8 years in a row and were reining winners in their class till ATC were outlawed ---- Takeuchi went on to make some of the finest small construction equipment out there , last I heard he was still alive at 102 years old and if you look at Honda Corporate's  personal line up , Takeuchi's name sakes are still there --- I actually got to shake his hand twice , once  in Las Vegas at the World of Concrete convention about 30 years ago  and then in Atalanta at Takeuchi assembly plant `and both times I shook his hand it was equipment related and  I had no idea who he really was at the time , and now think more highly of his achievement with ATVs 

[farmerbrown 36]

I've heard about Tacheuchi but I didn't know the whole story about him.  

 

I'm getting same of the wheels painted on the inside after wire wheeling them. They are pretty pitted but not right on the bead so I think they'll hold air. This is what she looks like right now.