Max RPMs question

[TxRanger1]

I have a 2003 Xr6 150 carbed motor. It is not an Opti engine. I looked at a couple of places online trying to find what the max RPMs are and cant seem to find a definitive answer. I see a few charts for the Opti but not a regular 150. Can anyone tell me what the max RPMs are and or where to find that info?
Thanks

[acesover]

Folks:

It will help you to receive faster, and more accurate responses if you will post your questions in the appropriate forum:

Mercury Motors (this forum)
TWO STROKE models (Less than 135 hp).

Mercury - 2.0/ 2.4/ 2.5 Liter High Performance
For discussions related to 2.0/ 2.4/ 2.5L Two Stroke motors (Carb, EFI, Optimax or Racing).

Mercury - 3 Liter & 3 Liter High Performance
For discussions related to 3L Two Stroke motors (XS, ProXS Optimax, EFI, or Racing)

Mercury - 4 Stroke / Verado
For discussions related to ALL Mercury 4 Stroke Engines.

For fastest/most-accurate assistance, please choose the correct forum.

Thanks!

[EuropeanAM]

Moving to the 2.5L Forum for you.

If you would, please take a moment to review the Announcements at the top of the Forum, and be sure to provide the Required Info (serial number) when posting. Thanks!

[dwtaylor]

The max RPM is listed on the serial number tag on the transom bracket of the outboard.

Mine is a 2004 150L XR6 (manufactured in August 2003) Max RPM 5600.