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  • 3 Post By bushmechanic
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June 23rd, 2017, 03:16 PM   #1
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how to find flatness of head and cylinder mating surfaces

i have a 1997 fe501e with a head gasket leak. I found water in the oil and changed the head gasket and now have antifreeze coming out of the head gasket. How do I check to see if the head cylinder is flat and if it's not flat what should i do to fix the leak?
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June 23rd, 2017, 04:56 PM   #2
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I Ride: 2008 700FK, 2002 628FST
Get some wet/dry sandpaper about #400 grit
Put it on a flat surface like a machine table or a thick peice of glass
You can check the surface with a straight edge

Then put the head on the sandpaper with gentle pressure and move it gently in figure 8 movements

Then have a look. The shiny bits were protruding more than the others

Keep going till it's all shiny

Do the same to the top of the barrel
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