MacDon 922 - Manual (Page 26)

Form # 46620 Issue 01/06 24
OPERATION
REEL SPEED
For best feeding of crop into the sickle and auger,
reel speed should be just faster than ground
speed. This gently sweeps crop across sickle into
auger. Excessive reel speed causes undue wear
of reel components and unnecessary load on reel
drive, resulting in uneven reel motion.
922 and 933 Headers
See Windrower Tractor Operator's Manual for
identification and instructions for use of reel speed
control in cab.
NOTE: Both speed control knobs on tractor
console are used to adjust reel speed.
912 Header
See "Reel and Reel Drive" in Maintenance/
Service section for instructions regarding changing
reel speed.