1. Thanks for visiting The Forums at DirtRider.Net. Please join us and gain access to advanced search functions and other features that will make the most of your time here.[ Do it! ]

2003 Yamaha yz250f troubleshooting

Discussion in 'Big Bikes' started by Natedawgrebuilds, Aug 27, 2016.

  1. Natedawgrebuilds

    Member

    Joined:
    Aug 27, 2016
    Messages:
    19
    Likes Received:
    0
    Hey guys I just picked up a 2003 yz 250f and it loose compression when kick starting it. It kickstart no problem when cold around 2 Kick when playing with the kick start getting the piston to compression stroke. But when warm it doesn't wanna kick over I can move the kick start down with my hand, it isn't firm like a 250 should be. I'm mechanically incline with cars but this is my first bike. the guy I bought it off of told me he redid the valve so I'm thinking he messed the clearance up


     
  2. Natedawgrebuilds

    Member

    Joined:
    Aug 27, 2016
    Messages:
    19
    Likes Received:
    0
    Forgot to mention bike run great when it warm I just bum start it. Kinda stuck tho I would love to have a bike kickstart anytime and anyplace no problem. I'm doing a full rebuilt on the bike this winter but I wanna ride it before it the season ends
     
  3. Rich Rohrich

    Rich Rohrich BioHazard
    Staff Member

    Joined:
    Jul 27, 1999
    Messages:
    22,191
    Likes Received:
    11,061
    Checking the valve clearance is very easy on these engines and is the logical place to start given what you have described.
     

Share This Page