Troubleshooting; Factors That Can Affect Quality Of Cut - Toro Greensmaster Flex 21 Service Manual

Troubleshooting

There are a number of factors that can contribute to un-
satisfactory quality of cut, some of which may be turf
conditions. Turf conditions such as excessive thatch,
"sponginess," or attempting to cut off too much grass
height may not always be overcome by adjusting the

Factors That Can Affect Quality of Cut

Factor
Governed engine speed.
Reel bearing condition.
Reel and bedknife sharpness.
Bedknife to reel adjustment.
Height–of–cut.
Proper bedknife for height–of–cut.
Greensmaster Flex 21
mower. It is important to remember that the lower the
height–of–cut, the more critical these factors are. See
Adjustments and Service and Repairs sections for de-
tailed adjustments and repair information.
Possible Problem/Correction
Check maximum governed engine speed. Adjust
engine to specifications if necessary.
See Adjustments section in Chapter 3 – Engine.
Check and replace reel bearings if necessary. Make
sure bearing housings are secured properly.
See Cutting Reel in the Service and Repairs section.
A reel and/or bedknife that has rounded cutting edges
or "rifling" (grooved or wavy appearance) cannot be
corrected by tightening the bedknife to reel contact.
Grind reel to remove taper and/or rifling. Grind
bedknife to sharpen and/or remove rifling.
The most common cause of rifling is bedknife to reel
contact that is too tight.
A new bedknife must be ground or backlapped
after installation to the bedbar.
Check bedknife to reel contact daily. The bedknife
must have light contact across the entire reel. No
contact will dull the cutting edges. Excessive contact
accelerates wear of both edges. Quality of cut is
adversely affected by both conditions (see Bedknife to
Reel Adjustment).
Slightly dull cutting edges may be corrected by
backlapping (see Backlapping).
Excessively dull cutting edges must be corrected by
grinding the reel and bedknife (see Preparing Reel for
Grinding).
"Effective" or actual height–of–cut depends on the
mower weight and turf conditions. Effective
height–of–cut will be different than the bench set
height–of–cut.
If the bedknife is too thick for effective height–of–cut,
poor quality of cut will result.
Page 7 – 7 Cutting Unit (Rev. C)