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 Topic: NSR250 MC18 R5K Engine Rebuild 







philup_7@hotmail.com

 
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philup_7@hotmail.com » Wed Apr 29, 2026 7:54 am

Petcock Valve Repair Cont’d
Petcock disassembled showing its constituent parts (praise be to Google for putting names to these parts lol).




New Seal Disk ready to go in.




New O-Ring ready to go onto Selector Disk, although the old O-Ring still looked in remarkably good condition.




All assembled ready to fit.
Note: Original screws replaced with longer ones so that screws not only screwed into the Petcock’s Body, but enabled Nyloc Nuts to be added to secure the screws. I know it’s a bit of a Belts & Braces approach, but I didn’t think my first thread was really strong enough [i](as I stripped most of it) to secure the Lever Retaining Plate onto the Petcock body.[/i]


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