1985 ATC250 Tear Down - Any quarks I should know of?

[jchale]

Purchased a 1985 ATC250r that is in decent shape although I like things in new shape. I think I will tear it down and have the frame sand blasted and powder coated. Does anyone have the paint code close to OEM? Are there any quarks, tricks or things I should know of before I start? On the rear swing arm/axle assembly. What is different from the 85 and 86? I purchased a used chrome axle and would like to know what I may need to change (bearing holder, brake stop, sprocket etc.). From my understanding there was a few frame differences, rear end, front light and some engine changes from 85 to 86. If somebody knows it would be appreciated.

Also I bought a new FMF/silencer for it. FMF site says to use stock jetting. Doesn't make much sense to me. I live in Winnipeg, MB (763ft) and will not ride in winter months. Temp will range from 5c to 30c. Engine to my knowledge is completely stock. I will confirm when I receive it and start working on it. I contacted Winnipeg Sport and Leisure (Honda Dealer) in Winnipeg for stock jetting information and they have not returned any correspondence. I assume most Canadian units were shipped with the same jetting for pilot and main. Any help on this would be great. I don't know what jetting is in it but will advise as soon as I take it apart.

Thanks again,

Jay

[Flyingw]

On the engine, there is a bolt that retains a gear on the right side of the crank. When you assemble the motor, be sure to put thread locker on that bolt. That bolt is known for coming loose and drilling a nice round hole in your clutch cover.

When setting the transmission gear sets back in to the case, I use a trick with two pieces of fishing line to hold everything on both shafts while I pickup and place the gear sets. I basically mate the two gear sets together as they would be in the transmission. I take a length of fishing line and bring it around the end of the shafts (left end). The ends of the fishing line are brought up to the other end of the shafts and I hold them with my hands while I grab the two mated gear sets. I pick the whole thing up and drop it right in to the transmission and nothing falls off while I do this. When the gear sets are placed in their holes I grab one end of the fishing line and pull them out. Works like a charm. Don't wrap the fishing line around the shafts but just half way around the shaft. I have some pics of this somewhere and I'll see if I can find them.

Every motor breathes differently so the only way to know if your jetting is right then you will need to do a plug chop.

[The_Steve_Man]

That is a nice looking R. If we're mine I would put new decals on it and leave the rest alone.

[jchale]

Good info Flyingw. Printed and will file in my 250r binder.

The_Steve_Man - I have a problem. I'm kind of a perfectionist. I may pick up a really clean 86 and this 85 may be my rider. Depends on that. I have a wack of new parts that I guess I could either sell or just keep. I'm sure I will have this machine for a lifetime.

[stoshu]

Every 250r I jetted around here I used stock pilot, needle in the middle, 142 main. FMF or factory pipes, always worked good.

[jchale]

Stoshu I see you're from Winnipeg as well. Do you currently have ever a atc250r? I will get mine tomorrow. Pretty excited to start tinkering.

[BOB MARLIN]

The powder coat on this trike is "Bangle red" its a standard color from the powder manufacturer. It's not an exact match, but the oem Honda plastics are all slightly different shades. This color seems to work with all of them.

188930

[jchale]

Thanks. Nice R.

[stoshu]

Stoshu I see you're from Winnipeg as well. Do you currently have ever a atc250r? I will get mine tomorrow. Pretty excited to start tinkering.

Only 250r I have right now is my 81. Tons of mods and rare parts on it so it keeps up with the newer quads. Mostly ride my 86 tri z.