2003 MC800 APV Adjustment

[sceptre]

Hey guys, there are two sets of numbers out there for power valves on a 2003 800. One set is 1.20" +- and the other is 1.51" +-. Can anyone say for sure which set is right or does is vary by which part of the year the engine was built?

Thank you for any info.

 

[lifegiver]

the 1.20 is for the early bird and the 1.51 is for the later.The early builds had the chaincase sticking below the bellypan and dimpled running boards. The later ones had the bellypan covering the chain case and the 1 inch crosscut traction nobs on the boards.