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Old 02-10-2012, 11:38 AM   #1
Mr. Carts OP
Gnarly Adventurer
 
Joined: Jan 2010
Location: Cahuilla Mountian
Oddometer: 275
1996 RM 125 Blown Head Gasket

Hi,
I could use a bit of help.

I am fixing a 1996 RM 125 for a young fellow. It is his first bike.
He got it in a non running condition.

I am a long time rider starting with my first bike a Hodaka Ace 100 but my newest two stroke is a 1972 Yankee Z.
I have worked on many air cooled Two strokes but never a watercooled one.

His bike had no compression so I pulled the head.
I can see were the steam has cleaned off the carbon on the piston so I know the head lost its seal.

Thesewatercooled bikes only have two O Ring sealing the head? I did not see a copper head gasket.

How is the best way to insure that the sealing surfaces are going to reseal once I install the new O Rings?

The Cylinder is stilll showing cross hatching on the cylinder wall. Can a Nikasil cylinder be honed like a steel cylinder?

Is there a PDF online of the service manual?

Thanks
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