125-200cc MS-3 Metering rod lengths

The mounting screws were nice and tight, after I undid them the intake boot literally fell off the reed block. I had to catch it before it hit the ground. The reeds were also just sitting there and they moved if you touched them. Not well sealed at all.

This bike is a 2013 WR 165. with only 7.2 hrs on it. My 1996 WR125 is actually running the same manifold as this and it is good.
I just put this one on a greased flat sheet of glass and what do you know it only is sealing 3/4 the way around. Most likely the culprit, in conjunction with running lean on the MR to start with. Time for a new one & half a turn richer.



I spoke to my dealer today about it & he will give me another boot if it doesn't go through under PFG warranty. Thanks Matt. Awesome!!
I hope that this is a one of and doesn't affect more people. Check yours when you get a chance guys.

No I've never put it on the 360. Not enough time at home since I got the carb.
Would the 360 not be better suited to a 38mm Lectron? Would you have a rod to suit a 360? and our fuel?
I would also have to drill it out for the auto Decomp connector.

I hope your problem is solved and you have no more issues. In post #12 you stated that you had sprayed the area and detected no running difference..... I absolutely would NOT just slap it together and go. I would start at a richer setting as Kelly originally suggested, and work backwards.

I find it a usefull tool to just hold a bike at 1/16 to 1/8th throttle with it in neutral and see how the motor reacts. Does it hold a steady low-ish RPM and stay there? Safe, maybe rich but safe. Does it get hollow and the RPM "runs away" and rev up and vary at a high RPM? Dangerously lean on the low-throttle opening tuning.

Best wishes, Mate!!

Would a 36 mm be to small for the 360?

Good words of advice there Marc Thanks!!