Briggs & Stratton 271172, 270962, CE8069, 276535 Check Breather, Install Breather, Remove Breather

Figure 2

Check Breather

1.Check for movement of the disc valve in the breather assembly. If disc is stuck or binding, replace the breather assembly.

2.Visually inspect the assembly for warping, wear, or damage. If these conditions are found, replace the breather assembly.

3.Inspect oil drain-back holes (C, Figure 3) to make sure they are open. Clean as needed.

4.Using 0.045” (1.14 mm) wire gauge, check clearance between the disc valve (B) and the housing (A). If gauge can be inserted, replace the breather assembly.

NOTE: Do not apply force to the wire gauge! The disc valve is retained by an internal bracket which will be distorted if pressure is applied to disc.

5.Inspect breather passage on top of cylinder for debris and/or blockage. Carefully clean this area if necessary, ensuring passage holes are open.

Figure 3

Install Breather

1.Install new breather passage gasket and breather passage cover on top of cylinder. Torque four screws to values listed in Section 12 - Engine Specification.

2.Place new breather gasket and breather assembly on side of cylinder. Torque two screws to values listed in Section 12 - Engine Specification.

Service Breather - Vertical Models 280000, 310000 Early Production

Remove Breather

1.Remove breather tube from breather assembly on side of cylinder.

2.Remove two screws, breather assembly, and gasket. Discard gasket.

Check Breather

1.Check for movement of the disc valve in the breather assembly. If disc is stuck or binding, replace the breather assembly.

2.Visually inspect the assembly for warping, wear, or damage. If these conditions are found, replace the breather assembly.

3.Inspect oil drain-back holes (C, Figure 4) to make sure they are open. Clean as needed.

4.Using 0.045” (1.14 mm) wire gauge, check clearance between the disc valve (B) and the housing (A). If gauge can be inserted, replace the breather assembly.

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