Aug 25, 2009 / Glow Plugs #11 W Willl Elite Member Joined Jul 22, 2006 Messages 4,333 Location Northwest, WA You will do NO harm to your tractor by using 'heaters', even if there not needed.
Sep 16, 2009 / Glow Plugs #12 W WildHog76 New member Joined Sep 5, 2009 Messages 7 Location Epsom, NH Center of the Universe Tractor Murray 21 inch push mower, 1983 Allis Chalmers 5015/Simplicity 9518, John Deere L110 Riding Mower, 1999 Polaris XCSP 600, 2002 Kawasaki Prairie 650, 2001 Suzuki Volusia 800 How much carbon build up is normal on glow plugs? My plugs are similar to NGK Y-110 6825.