'87 Suzuki Quadrunner 250 problems

[awyelton]

So, I picked up a 87 Suzuki Quadrunner 250 4wd to do a few repairs.(Brake and throttle cables, brakes,air cleaner, etc.) We rolled it off the trailer, tried to start it and the battery was dead. Though it did crank a few times with the push button. I pulled it in the shop and finished the repairs, go to start it, and nothing.  I MEAN NOTHING, no headlights, no neutral light, nothing.  I assumed in changing the cables something had come unplugged, but i haven't found anything from front to back.  Battery is charged, connections are clean, but i have no voltage anywhere on the quad except on the battery side of the solenoid.  Checked fuses, and neutral relay and everything checks out. Trans is in neutral and rolls freely.  If I jump the solenoid, it will fire up, but I can't get anything from the push button start. Anyone have any ideas, something I've missed?

[davefrombc]

Check  that the  quad is in neutral  for certain.  From that point  it is  a case of trouble shooting the  wiring .    You can download  the  service manual  for that quad  here:

Page 327 has the wiring diagram  for the  starting system

[awyelton]

Turns out that the hot wire from the battery to the main fuse was gone. Now that I have power, on to the next issue. I was told that the carb had been "rebuilt", and that it idled way too high. Fired it up and sure enough, WIDE open. Went through the carb, blew everything out, still the same. Idle screw does nothing, adjusted the clip on the needle and nothing. Any thoughts?

[davefrombc]

I  searched  on  the revving  problem  and  found suggestions that  the  slide  could be  in  backward  or the crank seals could be  leaking  several   suggested the  crank seals were the  most likely  culprits. Here's where  I  found the discussion https://atvconnection.com/forums/suzuki/348745-1991-lt250r-reving-its-own.html

[awyelton]

1 hour ago, davefrombc said:

I  searched  on  the revving  problem  and  found suggestions that  the  slide  could be  in  backward  or the crank seals could be  leaking  several   suggested the  crank seals were the  most likely  culprits. Here's where  I  found the discussion https://atvconnection.com/forums/suzuki/348745-1991-lt250r-reving-its-own.html

The thing is, it isn't a intermittent revving. From the moment it starts it's like having the throttle lever wide open. Just replaceth throttle cable, and it seems to be functioning as it should. It has the vacuum fuel pump, I've heard a lean condition can cause a high idle.

[awyelton]

Quick video of what's going on.

 

https://goo.gl/photos/7icH72NphmW1L3Uu5