Section 3. Breather Assemblies - Tecumseh HH100 Handbook

The Breather is a sealed assembly. If it is defective,
replace the entire assembly. The rubber tube on the
outside is not part of the assembly.
Install the breather with the drain holes toward the
base of the engine. Always use a new gasket. The
retaining screws must be tight.
If oil is being pumped out the breather:
1. Check for excess speed.
2. Operating at excessive angles.
3. Loose oil filler cap.
4. Worn rings.
5. Excess blow-by.
6. Breather body installed up-side down.
7. Overfilled with oil.
FOR 8 HP AND LARGER (EXCEPT VALVE-IN-HEAD)
DRAIN HOLES MUST
BE TOWARD ENGINE BASE
FOR VALVE-IN-HEAD ENGINES
BREATHER BODY
AND VALVE
32

SECTION 3. BREATHER ASSEMBLIES

BREATHER
BODY AND VALVE
BREATHER TUBE
TROUGH TO BE
INSTALLED AWAY
FROM CARB SIDE
OF ENGINE