Briggs & Stratton 7800921-00, 7800918-00 manual Reproduction B, Repair, How To Level The Mower Deck

Repair

! 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	!		A
Wear heavy leather gloves when handling or working
around cutting blades. Blades are extremely sharp and can
cause severe injury.
					Figure 37: Mower deck leveling (side-to-side)
Side-To-Side Leveling
Before making deck leveling adjustments, check the tire
pressure. Refer to “How To Check Tire Pressure”. If tires				Front-to-Rear Leveling
are properly inflated and mowing is still uneven, adjust side-				NOTE: Perform side-to-side leveling first.
to-side deck leveling.
1.	or similar object.		ReproductionB
	Place the unit on a smooth level surface.			1. With the unit			a smooth, level surface, rotate the blade
2.	Turn the engine off and remove the key. Remove the				until the blade tips are at the front and rear of the deck.
	spark plug wire from the spark plug and secure the wire			2. Measure the distance from the blade tips to the floor
3.	away from the plug.				(Figure 38). The distance should be the same, or the
	Raise the mower deck to the highest cutting position.				rear 1/8” to 1/4” lower than the front. If the rear blade tip
4.	Place a piece of angle iron, pipe, or similar object under				is higher than the front, or is more than 1/4” lower than
5.	the rear center of the deck.		for		the front, proceed with adjustment.
	Lower the mower deck until the rear of the deck is sup-			3. If adjustment is needed, turn the lock nut (B, Figure 38)
	ported by the object placed under it in the previous step.				both left and right hanger rods (A) the same number
6.	(The rear hanger rods (A, Figure 38) should be loose.)				of rotations to raise or lower the rear of the deck.
	Wearing heavy leather gloves, rotate the blade until the			4. Measure the blade tips again.
	blade tips are positioned at the right and left sides of the			5. Repeat Steps 2 through 4 until proper leveling is
	mower deck. Measure the distance from the blade tips				obtained.
	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-				Front		Rear
	ment.
7.	If adjustment is needed, slowlyNotturn the eccentric (A,				Floor
						X
								X-1/8”
	Figure 37) on the left front lift arm until the blade tips are
8.	within 1/8” of each other.
	Raise the mower deck, and remove the angle iron, pipe,
9.	Proceed to check front to rear leveling.

A

Figure 38: Mower deck leveling (front-to-rear)

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