1200r
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Other Guide: Fixing the crank case defect in 800/1200 PV/1300 engines (bonus: 1200R/1300 timing curves)
If you have an 800 PV, 1200 PV, 1300 PV or 1300 NPV. Congrats you have a manufacturing defect with your crankcase that requires fixing. All credit goes to Group K for discovering this and Harry Klemm for the writeup but, sharing here as unfortunately it’s not properly documented elsewhere...