Briggs & Stratton 7800921-00 Lawn Mower User Manual


 
Not for
Reproduction
31
Repair
en es fr
WARNING
DO NOT attempt any adjustments, maintenance, service or
repairs with the engine running. STOP engine. STOP blade.
Engage parking brake. Remove key. Remove spark plug
wire from spark plug and secure away from plug. Engine
and components are HOT. Avoid serious burns, allow all
parts to cool before working on machine.
!
!
How To Level The Mower Deck
WARNING
Wear heavy leather gloves when handling or working
around cutting blades. Blades are extremely sharp and can
cause severe injury.
!
!
Side-To-Side Leveling
Before making deck leveling adjustments, check the tire
pressure. Refer to “How To Check Tire Pressure”. If tires
are properly inflated and mowing is still uneven, adjust side-
to-side deck leveling.
1. Place the unit on a smooth level surface.
2. Turn the engine off and remove the key. Remove the
spark plug wire from the spark plug and secure the wire
away from the plug.
3. Raise the mower deck to the highest cutting position.
4. Place a piece of angle iron, pipe, or similar object under
the rear center of the deck.
5. Lower the mower deck until the rear of the deck is sup-
ported by the object placed under it in the previous step.
(The rear hanger rods (A, Figure 38) should be loose.)
6. Wearing heavy leather gloves, rotate the blade until the
blade tips are positioned at the right and left sides of the
mower deck. Measure the distance from the blade tips
to the floor. If the measurement is within 1/8” from side-
to-side, the deck is considered level. If difference from
side-to-side is greater than 1/8”, continue with adjust-
ment.
7. If adjustment is needed, slowly turn the eccentric (A,
Figure 37) on the left front lift arm until the blade tips are
within 1/8” of each other.
8. Raise the mower deck, and remove the angle iron, pipe,
or similar object.
9. Proceed to check front to rear leveling.
Figure 37: Mower deck leveling (side-to-side)
A
Front-to-Rear Leveling
NOTE: Perform side-to-side leveling first.
1. With the unit on a smooth, level surface, rotate the blade
until the blade tips are at the front and rear of the deck.
2. Measure the distance from the blade tips to the floor
(Figure 38). The distance should be the same, or the
rear 1/8” to 1/4” lower than the front. If the rear blade tip
is higher than the front, or is more than 1/4” lower than
the front, proceed with adjustment.
3. If adjustment is needed, turn the lock nut (B, Figure 38)
on both left and right hanger rods (A) the same number
of rotations to raise or lower the rear of the deck.
4. Measure the blade tips again.
5. Repeat Steps 2 through 4 until proper leveling is
obtained.
Figure 38: Mower deck leveling (front-to-rear)
Front
Rear
Floor
X
X-1/8”
A
B