605046
4-7
REV A
IMPORTANT:
The blade sail (curved part) must be point-
ing upward toward the inside of the deck to ensure proper cut-
ting.
IMPORTANT:
When mounting blades, rotate them after
installation to ensure blade tips do not touch each other or sides
of the mower.
Seat Adjustment
The seat on the BigDog
®
Alpha MP mower can be adjusted
forward and rearward by pivoting the seat platform up and
forward. Then, loosen the four cap screws on the underneath
side of the seat platform. Position the seat where you have the
best control of the machine and are the most comfortable and
then tighten the cap screws.
Steering Control Lever Adjustment
The steering control levers can be adjusted for operator
comfort. By loosening the cap screws that attaches the upper
control lever to the lower lever (Figure 4-11), the upper control
lever can be pivoted to fit the operator’s personal preference.
The steering control levers can also be adjusted up and down.
Remove the cap screws and slide the upper control lever up or
down and align the holes in it with the holes in lower lever. Re-
WARNING
Failure to correctly torque the bolt may result in the loss
of the blade which can cause serious injury.
WARNING
Mower blades are sharp and can cut. Wrap the blade(s) or
wear gloves and use extra caution when servicing them.
Figure 4-7
Figure 4-8
Resharpening
pattern
Do not sharpen to original pattern (below). It is
easier to get a straight cutting edge following
the resharpening pattern shown above.
Original edge
Warped Blade (Replace)
Straight Blade
Cutting
plane
Comparison of Warped and Straight Blades
Figure 4-9
Figure 4-10
Cutting edge
Twisted Blade Edge
(replace)
Cutting edge
Cutting Plane
Straight Blade Edge
End view of blades, comparing
twisted and straightened blades
Cap
screw
