Crankcase Breather Tube (003-018)
B3.9 and B5.9 Series Engines
Section 3 - Rocker Levers - Group 03
Wear appropriate eye and face protection when using
compressed air. Flying debris and dirt can cause bodily
Inspect the crankcase breather and tube internally for ob-
structions or sludge buildup.
If the tube is blocked, the tube and crankcase breather
must be cleaned with a strong solution of detergent or
replaced to prevent excess crankcase pressure buildup.
Dry crankcase breather and tube with compressed air.
Inspect for Reuse (003-018-007)
Check the crankcase breather tube for cracks or other
debris, which could obstruct the tube.
Install the crankcase breather tube to the side of the engine