Tecumseh HH100 Handbook page 5

DRAINING THE FUEL SYSTEM:
CAUTION: DRAIN THE FUEL INTO AN
APPROVED CONTAINER OUTDOORS, AND
AWAY FROM ANY OPEN FLAME OR
COMBUSTION SOURCE. BE SURE THE
ENGINE IS COOL.
1. Remove all gasoline from the fuel tank by running
the engine until the engine stops, or by draining
the fuel tank by removing the fuel line at the
carburetor or fuel tank. Be careful not to damage
the fuel line, fittings, or fuel tank.
2. Drain the carburetor by pressing upward on the
bowl drain (if equipped) which is located on the
bottom of the carburetor bowl. On carburetors
without a bowl drain, the carburetor may be drained
by loosening the bowl nut on the bottom carburetor
one full turn. Allow to completely drain and retighten
the bowl nut being careful not to damage the
bowl gasket when tightening.
3. If "Gasohol" has been used, complete the above
procedure and then put one half pint of unleaded
gasoline into the fuel tank and repeat the above
procedure. If Gasohol is allowed to remain in
the fuel system during storage, the alcohol content
will cause rubber gaskets and seals to deteriorate.
Change Oil: If the oil has not been changed recently,
this is a good time to do it.
Oil Cylinder Bore:
1. Disconnect the spark plug wire and ground the
wire to the engine. Remove the spark plug and
put 1/2 ounce (14 ml) of clean engine oil into
the spark plug hole.
2. Cover the spark plug hole with a shop towel.
3. Crank the engine over slowly several times.
CAUTION: AVOID SPRAY FROM SPARK PLUG
HOLE WHEN SLOWLY CRANKING ENGINE
OVER.
4. Install the spark plug and connect the spark plug
wire.
Clean Engine: Remove the blower housing and clean
all dirt, grass or debris from the intake screen, cylinder
head, cylinder cooling fins, carburetor, governor levers
and linkage.
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