Adjusting The Cutting Unit Lowering Rate - Toro 03806 Operator's Manual

brake, and move the Enable/Disable switch to
disable position.
2. Unlock and raise the seat to expose controls.
3. Locate the reel speed selector knobs and backlap
knobs (Figure 81). Rotate the desired backlap
knob(s) to the backlap position and the desired reel
speed selector knob(s) to position 1.
1. Backlap knobs
Note: Backlapping speed may be increased by
moving the reel speed selector knob toward 13.
Each position will increase speed approximately 100
rpm. After changing selector, wait 30 seconds for
the system to stabilize at the new speed.
4. Make initial reel to bedknife adjustments appropriate
for backlapping on all cutting units which are to be
backlapped.
5. Start engine and run at idle speed.
CAUTION
Contact with the reels or other moving parts can
result in personal injury.
• Keep finger, hands, and clothing away from
the reels and other moving parts.
• Never use a short handles brush to apply
lapping compound.
6. Select either front, rear, or both backlap knobs to
determine which reels will be backlapped.
7. Move Enable/Disable switch to Enable position.
Move Lower Mow/Lift control forward to start
backlapping operation on designated reels.
8. Apply lapping compound with a long handle brush
(Toro Part No. 29-9100). Never use a short handled
brush.
Figure 81
2. Reel speed selector knobs
9. If reels stall or become erratic while backlapping,
stop backlapping by moving the Lower Mow/Lift
control lever rearward. Once the reels have stopped,
move the desired reel speed selector knob(s) one
position closer to 13. Resume backlapping by
moving the Lower Mow/Lift control lever forward.
10. To make an adjustment to the cutting units
while backlapping, turn reels Off by moving
the Lower Mow/Raise lever rearward; move the
Enable/Disable switch to Disable and turn the
engine Off. After adjustments have been completed,
repeat steps 5 through 9.
11. When the cutting unit is adequately sharpened, a
burr will form on the front edge of the knife. Using
a file, carefully remove the burr without dulling the
cutting edge.
12. Repeat procedure for all cutting units to be
backlapped.
When backlap operation has been completed, return
the backlap knobs to the forward flow position,
lower seat and wash all lapping compound off cutting
units. Adjust cutting unit reel to bedknife as needed.
Note: If the backlap knobs are not returned to the
forward flow position after backlapping, the cutting
units will not raise or function properly.
Adjusting the Cutting Unit
Lowering Rate
Tractors are setup at the factory appropriately for most
fairway mowing applications.
The following adjustments are available for fine-tuning
of the machine to the application:
The cutting unit lift circuits are equipped with adjustable
valves to ensure the cutting units lower at the desired
rate. Adjust as follows:
Run traction unit until operating temperature is reached.
1. Locate the valves, on the lift manifold, for
adjusting the desired cutting unit(s) (See chart and
Figure 82 and Figure 83).
Valve
FC1
FC4
FC5
FC6
FC7
54
Cutting Unit Affected
#1 (Front Center)
#4 & #5 (Front Wings)
#2 & #3 (Rear)
#6 (Rear Left)
#7 (Rear Right)