Deck Cutting Height Adjustment - BigDog Diablo MP Operator's Manual

Never attempt to make any adjustments to the
mower deck while the engine is running or with the
deck drive clutch engaged. Mower blades cannot
be seen and are located very close to the deck
housing. Fingers and toes can be cut off instantly.
Discharge chute may vary from this illustration
A
A. Discharge chute
Figure 3-12
Deck Clutch Operation
Before beginning operation, check to make sure the deck
clutch switch is engaging and disengaging the blades properly.
Make sure that the area around and under the deck
is clear and that there are no bystanders in the
immediate area before proceeding.
To check the deck clutch switch:
1. Start the engine and engage the deck clutch.
2. With the deck clutch switch up (clutch engaged) and
the engine running, listen to confirm that the mower
blades are rotating.
3. Now, push the deck clutch switch down (clutch disen-
gaged), and with the engine running, listen to confirm
that the blades have stopped rotating.
4. If the mower blades continue to rotate with the deck
clutch switch down, discontinue operation immedi-
ately and contact your Big Dog
Follow these procedures to maximize clutch life.
1. Engage the clutch only when the throttle is set at
approximately 2/3 throttle and there is no load on the
605231
Mower Dealer.
®
3-9
blades. After clutch engagement, advance the engine
throttle to full rpm.
Engaging the deck clutch at high engine rpm or when
under heavy load (in tall grass, for example) can cause
belts and/or electric clutch to slip, resulting in premature
wear or possible damage.
2. Disengage the clutch only when the throttle is set at
less than 1/2 throttle.
Never disengage the clutch with the engine running at
high rpm. Setting the throttle to less than 1/2 throttle
when disengaging the clutch will help extend clutch life.
Warranty will not be allowed for deck clutches that fail due
to improper engagement and disengagement practices.

Deck Cutting Height Adjustment

Deck cutting height is adjustable in 1/4" (6.4mm) incre-
ments. The holes in the height adjusting bar are spaced at
1/2" (12.7mm) intervals. By turning the height adjusting stop
around, 1/4" (6.4mm) increments can be attained due to the
1/4" (6.4mm) plate that is part of the stop. Figure 3-13
EXAMPLE: When the height adjusting stop is placed in the
3" (76.2mm) hole, with the 1/4" (6.4mm) plate facing to the
front of the unit, the cutting height is at 3" (76.2mm). When
the height adjusting stop is placed in the 3" (76.2mm) hole,
with the 1/4" (6.4mm) plate on the operator's side of the hole,
the cutting height is at 3-1/4" (82.6mm).
The notch located at the rear of the height adjusting bar
engages the stop handle when the deck lift pedal is fully
depressed. This sets the deck in transport mode.
A. Transport lever
B. Pin
Figure 3-13
A
B
C
C. Cutting height holes
REV F