F800GS - Coolant bleeder?

Discussion in 'Parallel Universe' started by Dert Gerl, Feb 8, 2009.

  1. lmclamore

    lmclamore Citation Collector

    Jul 9, 2010
    Washington DC area
    My dealer also went the "bad radiator cap" route, replaced it, topped her off and 150 miles later...everything is working as it should.:thumbup
  2. ThinAir

    ThinAir Adventurer

    Apr 28, 2009
    Right or wrong, after I replaced my wife's 650 twin's radiator I too ran into the red triangle and found the fluid level low from not properly bleeding the system. I simply let the bike idle with the radiator cap off, while watching to make sure the bike was not overheating, and just filled the radiator a little at a time until it maintained a level near the neck of the fill area. Yes it burped out some fluid from time to time and got some drips here and there, but once I did that then filled the reservoir after placing the cap back on the radiator, it has been fine since. Simple, effective, and probably way wrong!!
  3. EnderTheX

    EnderTheX Dirt Rider

    Mar 14, 2009
    DFW Area, TX
    Any follow up on this method?... How did it end up?

    Anyone got more stories of bleeding the coolant system? :freaky
  4. RidingAgin

    RidingAgin Been here awhile

    Mar 29, 2006
    Near Black Diamond, WA.
    I followed this procedure, and it worked well on my 11 F650GS twin. For draining, i pulled the lower hose at the radiator and opened the vent screw. I did tip the bike to the right to get some additional fluid out (and shook it a little). When filling the radiator, have the bike on the side stand to lean it over to get more fluid in.

    Just finished a 15 mile test ride test ride after buttoning up the bike, operated fine. Thanks for the write up. :clap
  5. JRWooden

    JRWooden Long timer

    Jul 5, 2008
    The great state of confusion
    For draining the coolant the manual suggests removing the lower coolant tube from the oil cooler and letting the coolant drain from there ...

    tube is held in by one torx ... and sealed by an o-ring.
    Be careful not to loose the o-ring when you pull out the tube :deal