Check Control Bar Operation - Toro V-21SB Operator's Manual

POTENTIAL HAZARD
Adjusting height-of-cut levers could bring
hands into contact with moving blade.
WHAT CAN HAPPEN
Contact with rotating blade can cause
serious injury.
HOW TO AVOID THE HAZARD
Stop engine and wait for all movement to
stop before adjusting cutting height.
Do not put fingers under housing when
adjusting height-of-cut.
2. For easier adjustment, lift housing up so wheel is
off ground. Do not place hands under deck
when lifting housing. Squeeze adjusting lever
toward wheel and move it to the desired setting
(Fig. 13). Ensure pin on adjusting lever engages
hole in bracket.
Note: Front wheels can be adjusted to 1/2
inch. Move adjusting lever past "1"
and release pin into slot in housing. It
is not recommended that the 1/2 inch
height-of-cut setting be used on a
regular basis.
3. In conditions when maximum power is required
or when cutting in spongy thatch that causes rear
wheels to sink in turf, raise rear wheel setting
one increment higher. Make sure wheel settings
are returned to equal settings, when cutting in
normal conditions, to achieve the best quality of
cut.

Check Control Bar Operation

Check the control bar before each use to ensure the
Blade Brake Clutch (BBC) system is operating
properly.
A: Normal Control Bar Operation Test
1. With engine off, wheel mower onto a paved
surface in a non-windy area.
2. Put all four wheels in "3" height–of–cut position
(Fig. 13).
3. Put ground speed selector in "N" (neutral)
position.
4. Take a half sheet of newspaper and crumple it
into a ball small enough to go under deck
(approx. three inches in diameter) (Fig. 14).
5. Place ball of newspaper five inches in front of
mower (Fig. 14).
6. Start the engine.
7. Push control bar down to lowest position
(Fig. 15).
8. Lift control bar to the normal "blade engaged"
position (about one inch below the handle)
(Position A, Fig. 16). The "fan" noise indicates
that the mower blade is turning.
9. Release the control bar (Position B, Fig. 16). A
"bang" should be heard. The blade should stop
running in three seconds.
10. Immediately push the mower over the newspaper
ball.
11. Turn off the engine.
12. Walk around the mower to check for the
newspaper ball. If the ball did not go under the
deck, repeat steps 5–11.
13. Pull mower away from the newspaper. If the
newspaper ball unravels or is shredded, it
indicates that the blade has not stopped as it
should, resulting in an unsafe operating
condition. Contact an Authorized Toro Service
Dealer for an inspection at your earliest
convenience. However, to detect BBC system
deterioration before it affects normal operation,
we also ask you to perform Special Control Bar
Test B which follows.
EN–10