Aftercut Appearance - Toro Greensmaster 3120 Service Manual

Aftercut Appearance

Factors That Can Affect Quality of Cut
Factor
Tire pressure
Engine RPM and mow speed
Reel speed
Reel bearing condition
Bedknife to reel adjustment
Reel and bedknife sharpness
Rear roller level
Height-of-cut
Proper bedknife for height-of-cut desired
Greensmaster 3120
17230SL Rev C
There are a number of factors that can contribute to unsatisfactory 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 cutting unit. It is important to remember that the lower
the height-of-cut, the more critical these factors are.
Refer to the Cutting Unit Operator's Manual detailed adjustment procedures.
Refer to Service and Repairs (page 7–14)
Note: For additional information regarding cutting unit troubleshooting, a number
of Reel Mower and Aftercut Appearance General Training Books can be found
on the Service Reference Set available from your Authorized Toro Distributor.
Check tire pressure of all traction unit tires. Adjust tire pressure as
necessary.
For best cutting performance and appearance, the engine should be
run at high idle speed while cutting. Check and adjust the high idle
speed as necessary; refer to the Traction Unit Operator's Manual.
Use the traction pedal linkage to adjust the actual mow speed; refer to
Traction Unit Operator's Manual.
All cutting reels must rotate at the same speed ± 100 rpm. Use a
non-contact tachometer (phototach) to verify reel speed.
Make sure that the reel speed setting is correct for the number of
blades and mow speed used; refer to the Traction Unit Operator's
Manual.
Note: The reel speed is related to the engine RPM on machines with
hydraulically driven cutting units. Reducing the engine RPM in low
mow speed situations (clean-up passes for example) will help match
the clip to the green and reduce the appearance of a triplex ring.
Check and replace the reel bearings if necessary; refer to
Assembly (page
Check the 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.
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 the reel to remove taper and/or rifling.
Grind the 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. Refer to
information or the Traction Unit Operator's Manual for backlapping
information.
Reel and rear roller should be parallel for proper cutting performance;
refer to
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.
for cutting unit repair information.
Possible Problem/Correction
7–23).
Grinding the Bedknife (page 7–21)
Leveling the Rear Roller (page
Page 7–9
Reel
for grinding
7–12).
DPA Cutting Units: Aftercut Appearance