Briggs & Stratton 7800932-00 manual How To Adjust The Blade Brake How To Remove The Deck Cover

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.

6.Recheck the mower blade stopping time. If still over 5 seconds, complete or repeat Step 5 as needed.

7.Once blade stopping time has been correctly adjusted, replace the mower deck cover.

! WARNING !

Blade must stop rotating in 5 seconds or less after the blade has been turned off. DO NOT operate machine until blade brake has been adjusted and functioning properly.

D

F	B
	A
	A

	E	Reproduction
	C					C	B
	Figure 41: PTO (mower blade belt) cable adjustment
	(components removed for clarity)				Figure 42: Blade brake adjustment
How To Adjust The Blade Brake				How To Remove The Deck Cover
NOTE: The blade brake is set at the factory, and should				1. With the unit off, lower the mower deck to the lowest
					cutting position. Refer to “How To Adjust The Cutting
	Not
never require adjustment. The adjustment procedure below					Height”.
is provided for reference only.			for
1. Check the mower blade stopping time. Refer to “How To				2. Remove the four fasteners (B, Figure 43) securing the
					deck cover (A) to the mower deck. Remove the cover.
	Check Mower Blade Stopping Time”.
				3. When replacing the cover, be sure that the lift arms and
	• If mower blade stopping time is 5 seconds or shorter,
					control cables are routed through the relief slots (C)
	no adjustment is needed.
					in the cover. Secure the cover with the four fasteners
	• If mower blade stopping time is longer than 5 sec-
					removed in Step 2, tightening securely.
	onds, proceed to Step 2.
2. Before attempting to adjust the blade brake, check to
					B		A
	be sure mower blade belt tension is correctly adjusted.
	Refer to “How To Adjust Mower Blade Belt Tension”.
	• If belt tension adjustment is needed, perform belt ten-
	sion adjustment, then repeat Step 1.
	• If belt tension is correct, proceed to Step 3.
3. With the unit off, remove the deck cover (refer to					C
	“How To Remove The Deck Cover”), and measure the
	exposed thread of the blade brake eyebolt (A, Figure 42)
	from the jam nut to the end of the bolt. It should measure
	1/2”.

4.If the eyebolt thread measures less than 1/2”, loosen the jam nut (B), and tighten the T-bolt (C) one-half turn (clockwise). Retighten the jam nut, and remeasure the thread. Repeat until the correct thread measurement is

achieved, then proceed directly to Step 6.
	Figure 43: Removing the deck cover (deck removed from
5. If the eyebolt thread measurement is correct, loosen
	unit for clarity only)
the jam nut (B), and tighten the T-bolt (C) one-half turn
(clockwise). Retighten the jam nut, then proceed to
Step 6.

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