HUSTLER TrimStar General Service Manual page 21

Engine RPM Settings
The engine rpm's are set at the factory for maximum mowing efficiency. Occasionally it may be necessary to check and adjust the
settings. The engine speeds should be set as follows:
NOTE: Model numbers may or may not end with an extension after the number. There are several different extensions that may be
shown; i.e. EX or CE.
Example: 922222 (no extension)
922222 EX
922222 CE
922222 US
114674_0512
Kawasaki FS481 / FS541 / FS600
ENGINE SPEED
MODEL NO. ENDING WITH:
MODEL NO. WITHOUT EXTENSION
MODEL NO. WITH EX EXTENSION
MODEL NO. WITH US EXTENSION
MODEL NO. WITH CE EXTENSION
5-3
HIGH IDLE
3600 ± 50 RPM
REV B