Honda trx Four wheeler

As near as I can tell it's a Honda ATC or TRX. Not a 4X4 though.

It has an Stuck open valve or the Cam Chain is broke. (I cant seem to make photobucket work or I'd post the photos)

Any tips or tricks for this little guy will be thoroughly appreciated by a 13 yr old Grandson.

 

What is it, a little 70 cc three wheeler? I see you said a four X 2. What is the displacement?

 

I don't know what the displacment is yet. Haven't found any numbers.
I'm told there's a serial number on the front yoke, but I have to remove some of the plastic to see it.
Certainly there must be numbers on the engine somewhere?
Tell me where to look if you can.

 

Is it a two stroke or four stroke? Oil mixed with gas or oil separate in the crankcase?

 

It's a Four Stroke. I'm sure it has a Chain from the Crank up to the Cam.

Here's a link to my Photo-bucket Honda file.
honda trx pictures by groaner - Photobucket

 

And you think you have a stuck intake valve? Apparently you are getting blow back through the carburetor? Take off the tappet cover of one of the exhaust valves just above the exhaust pipe. It just takes a wrench that fits the nut molding. You'll be able to see the rockers move. Kick it over and if the rockers of the exhaust don't move, you have a broken chain or the cam drive is stripped. Probably a broken chain, although it's not common.

If the rockers for the exhaust move OK, put that cover back on and go to the intake side by the carb and take those off. See if the rockers move and maybe one of the valves is stuck open. If it's a stuck valve, spray it with some Blaster penetrating oil and see if it won't shake loose. If not, pull the carb and spray the valve from the underside. It should come loose then.

 

It looks like it says TRX 125 on one of the frame down tubes. It looks like that would fit.

 

Thanks for those tips.
I tried taking the fenders off to clean it up tonite. Rusty bolts.
Nice weather to work in though...for a change.