DescriptionThis video provides step-by-step instructions for replacing the intake manifold gasket on Briggs and Stratton small engines, commonly found on Toro, John Deere, and Lawn Boy riding lawn mowers. The most common reason for replacing the gasket is when the engine runs poorly.
All of the information in this gasket replacement video is applicable to the following brands: Briggs & Stratton, John Deere, Toro, Lawn Boy
Tools used: 1/4” socket or nut driver, 3/8” socket or nut driver, 7/16” socket, 5/16” wrench
Step-By-Step Instructions1
Before you replace the intake manifold gasket on your engine, make sure the engine has cooled, the ignition switch is in the off position, and the key has been removed if applicable.
2
If necessary, disconnect the headlight wire harness.
3
Then, lift up the hood or engine cover and detach it.
4
Now, rotate the air filter cover retaining knobs counterclockwise and pull off the cover.
5
Lift out the air filter.
6
Use a quarter-inch socket or nut driver to unthread the screw inside the filter housing.
7
Now, use a 3/8 inch socket or wrench to unthread the four blower housing mounting bolts.
8
Detach the oil drain tube and lift off the blower housing.
9
Use a 7/16 inch socket to unthread the mounting nuts securing the air inlet pipe.
10
Detach the breather tube and set the pipe aside.
11
Use a 5/16 inch deep well socket or nut driver to unthread the carburetor mounting bolts.
12
Pull the carburetor back and remove the old intake manifold gasket if still intact.
13
Install the new intake manifold gasket by aligning it on the carburetor.
14
Insert a mounting bolt to hold the gasket in place.
15
Then, realign the carburetor on the intake manifold.
16
Thread the bolts and tighten to secure.
17
Confirm that the o-ring is in place on the air inlet pipe.
18
Then, align the pipe on the carburetor and secure it with the mounting nuts.
19
Reattach the breather tube to the pipe.
20
Reposition the blower housing.
21
Make sure the housing is properly seated on the air diverter.
22
Rethread and tighten the mounting bolts to secure the housing.
23
The longer bolts go in the back.
24
Replace the screw in the filter housing.
25
Reposition the air filter.
26
Realign the cover and rotate the retaining knobs clockwise to secure.
27
Reattach the oil drain tube to the blower housing.
28
Reinstall the hood or engine cover and reconnect the headlight wire harness if applicable.