B3.9 and B5.9 Series Engines
Lubricating Oil Pressure Regulator (Main Rifle) (007-029)
Section 7 - Lubricating Oil System - Group 07
Shut off the engine. Wait approximately 5 minutes to let the
oil drain from the upper parts of the engine. Check the level
Add oil as necessary to bring the oil level to the "H" (high)
mark on the dipstick.
Lubricating Oil Pressure Regulator
(Main Rifle) (007-029)
plug to prevent debris from falling into the plunger bore
when the plug is removed.
Remove the threaded plug, spring, and plunger.
Service Tip: The plunger normally can be removed by
inserting one finger into the plunger bore until snug and
pulling up. If the plunger can not be removed in this man-
ner, the plunger is probably stuck and will require removal
of the housing for plunger removal and cleaning.