Ten-year JGB futures ended flat at 148.56. They had risen earlier to 148.66, near a record high of 148.67 touched in January.
A closely-watched gauge of US manufacturing showed the sector contracted for the first time in three years.
The yield on the cash 10-year bonds was flat at 0.320 percent.
The longer end of the yield curve underperformed, ahead of auctions of long-dated bonds on Thursday and next Tuesday.
The 20-year yield rose 0.5 basis point to 1.065 percent. The 30-year yield rose 1.5 basis points to 1.390 percent.