gasgas694 Posted August 3, 2014 Report Share Posted August 3, 2014 Hi, the weekend was my first trip out on my GasGas 300cc, i loved it but the bike didn't want to start so i got home and thought lets change the spark plug as i had a spare plug, here is the question i screwed the new pug in till it got tight is the correct thing to do or do i have to get a gap??? if i need to set a gap how do i do that? i am new to this so any help will great Quote Link to comment Share on other sites More sharing options...
dadof2 Posted August 3, 2014 Report Share Posted August 3, 2014 Tightening the pug is not the same as setting the gap. The plug only needs to be gently tightened, screw it in finger tight then just nip it up a bit with a spanner. If your spanner is 150mm long a reasonable tug with your little finger is enough torque. The gap is between the electrodes, one in the centre and the other the bent over one. The gap probably should be 0.5 to 0.6 mm on a 300 gasser. There are plenty of You tube videos on gapping spark plugs. 1 Quote Link to comment Share on other sites More sharing options...
lineaway Posted August 4, 2014 Report Share Posted August 4, 2014 First thing, did you leave the fuel valve on during transport? Quote Link to comment Share on other sites More sharing options...
thats_a_five Posted August 4, 2014 Report Share Posted August 4, 2014 Dadof2's description of gapping the plug is spot on. When on a 2 stroke, I ALWAYS carry a spare plug and wrench (spanner). Plugs rarely give any warning at all before they foul. And they usually fail at the farthest point from the truck. Quote Link to comment Share on other sites More sharing options...
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