Rocker Lever Cover Mounted Crankcase Breather
NOTE: Exposure to oil can cause the gasket to swell , which can make it difficult to install the gasket back into
the groove. If the gasket comes out of the groove, do not attempt to install the gasket. Replace it with a new gasket.
Inspect the breather cover and crankcase ventilation filter gasket located on the rocker lever cover for tears, cuts, or
brittleness.
If damage is found , replace the gasket. Do not stretch the new gasket during installation.
Clean the crankcase ventilation filter mounting surface and a-ring sealing surfaces on the rocker lever cover. Use
a clean shop towel and solvent.
Dry the surfaces with a clean shop towel.
NOTE: Use the following procedure if removal of the closed crankcase ventilation valve is required. Refer to
Procedure 003-023 in Section 3.
Clean the crankcase ventilation filter cover with warm soapy water.
Dry with compressed air.
Inspect the cover for cracks. Replace the cover if damage is found.
If the crankcase ventilation filter was removed and will be reused, inspect the edge of the filter for tears, cuts, or
brittleness.
Inspect the a-ring seals for tears, cuts, or brittleness.
If any damage is found, replace the filter and/or o-ring(s).
NOTE: Do not spray solvent into the crankcase ventilation housing. Solvent sprayed into the housing can drain into
the oil pan through the housing drain tube.
Clean the interior of the crankcase ventilation filter housing and cover with a clean shop towel and solvent.
Dry the housing and cover with a clean shop towel.
If the crankcase ventilation filter was removed and will be reused, inspect the edge-molded gasket on the perimeter
of the filter for tears, cuts, or brittleness.
If any damage is found, replace the filter.
