912 WTO 2600 RPM

912 WOT max RPM 2600

Rotax 912ULS with about 60 hours. Maximum RPM at full throttle is only 2600RPM

Had this plane out about three weeks ago. OAT: 93F, CHT : 245 F, engine normal WOT RPM about 4950 to 5000.

Started up to fly today 9/29/25. Max RPM at WOT is 2620 , Fuel Flow indicated 6.7GPM, Fuel Pressure indicated 3.1PSI.

Fuel: 100LL

>Disconnected fuel lines, checked fuel flow at filter, gascolator and at engine fuel pump.

>Check carburetor throttle and choke linkage.

>Checked fuel quantity in tanks.

>Let engine cool and restarted several times, max RPM remained about 2600 RPM.

Engine starts up and runs smooth.

No abnormal sounds or vibrations.

I would greatly appreciate any advice.