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    • By r1jakecfd
      Hi Guys,
      I know my voltage regulator is bad on my Onan P220 and was wondering if anyone has an opinion on a replacement, OEM or aftermarket? 
      Also, I checked my stator leads for AC Voltage and got about 25 volts at 3600 rpm on each. Is this OK? I know it says in the 40’s.
      Thanks guys
    • By lodestonefarm
      I went out to use my 520H with blower this evening and it won't start.  I used this machine a few days ago (for the first time this winter).  The battery has been on a trickle charge so I don't think that's the problem.  It's done this before where it won't start, won't start, and then starts.  Usually that is in cold weather and after I've previously used it to blow snow.  I don't have a heated garage so I think it might have some ice somewhere that was introduced as water the last time I blew snow.
      Here's what it's currently doing.  When I turn the Ignition to 'On' the red warning lights and the dashs light all come on.  When I turn the key to start position I get a single 'Click' and nothing more.  I tried jumping it from a hot battery just to rule out a bad battery.  Same behavior.  Following some of the other threads about 520s with trouble starting, I pulled the blue wire off the starter solenoid.  If I run a jumper wire from the (+) side of the battery directly to the solenoid I get the same behavior (regardless of key being in on or off position)- small spark where my jumper wire is touching the battery terminal and a single click.  
      I'm unsure what this means about the solenoid and if that, in any way tests, the starter.  Could it be that my starter is bad/frozen?  I tried using a heat lamp to warm up that area, but in this weather (and my garage, which is really just a tarp shed) that just isn't going to work.  
      I've downloaded the demystification guide and started looking at it but I'm hoping someone might have some suggestions.  Snow is falling and I'm not making much headway on this.  
    • By Tractor boy
      Ive been trying to change the headlight bulbs on my 312-8. but i cant seem to get the glass cover off. So are these bulbs change able? And is there a reason for the headlights to not function if they are getting current?
      - Tractorboy
    • By Jeff-C175
      Detailed wiring from the Demystification Guide #492-4509
      4 pages 112.52KB
      p7-67 to p7-70
      Onan powered
      1989 416-8 model 31-16O801
    • By RT WH520
      Need help...I have a 520H and I have not worked on small engines other than basic maint.
      My P220 is showing that it is not charging the battery. I got a new battery and after using it a bit, it will not start. I know the basics of looking for wires shorting and other basic.
      I have the manual also. Should I start with the rectifier regulator. It is cheap enough.
      Any thoughts and suggestions appreciated!!!