donnie crawford 1 #1 Posted January 19, 2020 (edited) I have a question if you go to k301 engine manual it says 0.025 on plug gap but you go 1982 c-125 owners manual it says 0.030 on plug gap. So? I have little skip or vibration at idle just trying the little things first. Edited January 19, 2020 by donnie crawford Share this post Link to post Share on other sites
The Tuul Crib 7,336 #2 Posted January 19, 2020 (edited) to Donnie ! .25 is what l always gap my plugs at. Check out the manual section here and it should give you all the information that you would need. Edited January 19, 2020 by The Tool Crib Share this post Link to post Share on other sites
donnie crawford 1 #3 Posted January 19, 2020 I did that's what I ask about why does it say in owners manual 0.030 and 0.025 in the engine manual. I thought there might be a reason the owners manual was different maybe the electrical system or some other specific reason. Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,032 #5 Posted January 19, 2020 It is possible the recommendations changed over the years. This is from a service manual dated April 1990 and revised November 1992. Gas fueled engines in the chart are propane and natural gas. Garry Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,032 #6 Posted January 19, 2020 7 hours ago, donnie crawford said: I have little skip or vibration at idle just trying the little things first. Had the same until I started adding Marvel Mystery oil to the fuel. I believe the added lubrication to the valve stems overcomes their reluctance to close 100% - 100% of the time. Garry 1 1 Share this post Link to post Share on other sites
