Electronics

Looking to see if this can be repaired or if someone has it for sale. It lights up but appears like a dark shadow over the numbers. I can make out some numbers but not that good. 

Shadetree, thank you very much for the guidance.  I should’ve mentioned the valves….not sure if they needed it, but I pulled each of them out after numbering them, inspected, cleaned off the carbon buildup, and lapped them.  Valves didn’t appear to be bent.  All the springs and collets went back where they came from.  I’m obviously far from an expert, but I feel the valve train is in good shape.  However, if you think I need to reinspect them, I’ll certainly make the effort. I generally try to look for worn parts or abnormalities during tear down so I know what I may have to order, but I know there are certainly several things I could’ve missed in my inexperience.  For what it’s worth, the dowels that recess in the head just outside the cam bearings were hard to put in….especially the one on the right side.  It’s going to be several weeks before I can get back to it, but I’ll follow up with you now that I know more what I should focus on.  Thank you again for your advice!

Well, got around to busting the front tires off the rims. Played around with some paint I found on the shelf today, hit one of the spare front wheels with a wire wheel and sprayed a coat on really quick just to see how it came out. It’s a bit too shiny I think, the picture doesn’t really show the paint mismatch. I’ll let it bake in the sun tomorrow and see how it comes out.   I think I’m gonna mount the mud lites up on these spare wheels, and keep them in the corner just in case.

you never mentioned anything about the speed sensors grasshopper !...lol.

word from the wise: unless you put the engine in gear , and put the front into 4wd ?, the front diff will never work !. i found this out the hard way on an older trx450fm !. i did the same thing you are doing..light on dash would light up, but no movement on front diff ?..after buying a control unit..plugging it in ?..same problem !. it was by accident that i was able to see why the front diff was not working ?..i was checking out the transmission , to make sure it shifted through all the gears ?, low and behold, the front 4wd light stayed lit..no flashing, and the front end was working !. sooo..in other words..the atv has to be in gear..like ..1st ?, turn switch from 2wd to 4wd..then watch to see if the front end works ?. also..keep in mind..most of these atvs that have a electronic front diff, they have not 1 ?, but 2 speed sensors !. this is how the front diff works !. sooo..until you put the atv in gear..and the front output drive shaft is spinning ?, the first speed sensor at the front side, input side of the diff can not see any movement on the drive shafts pinion gear ?, sooo..the electronic part of the pinion gear will not engage from pinion gear to ring gear. the second speed sensor is on the very front, top side of the diff..right on the middle of the differential,  its covered by a metal plate cover, same goes for the first speed sensor at the drive shaft input side, left side when viewing from seat.