Section 3. Seals - Tecumseh HH100 Handbook

Use an oil seal protector when removing covers from
crankshaft. See Chapter 11 of Mechanics Manual
under "Tools", using tool as shown. Remove the cylinder
cover at either the P.T.O. or flywheel end. Drive the
seal out of the cylinder cover from the inside out.
Install a new seal. Use new gaskets. Use the seal
protector when replacing the cover.
OIL SEAL MUST BE
SQUARE IN BORE
Remove the covers before installing the oil seal.
The crankshaft cannot protrude while the seal is
being installed.
Lay the cover on a flat clean surface. Use a seal
driver and the correct seal installer to drive the seal
into position. (See Chapter 11, Technician's Manual
for tools). Place the seal onto the seal protector/
installer and then over the bore, center the driver
over the seal and drive the seal into position with a
hammer.
USE A SEAL PROTECTOR EVERY TIME THE OIL
SEAL IS PUT ONTO OR PULLED OFF OF THE
CRANKSHAFT.
42

SECTION 3. SEALS

DRIVE OIL SEAL FLUSH
TO .025 (.635 mm)
BELOW SURFACE
CYLINDER COVER
C/S SEAL MAG. END
DRIVE OIL SEAL
FLUSH TO .025 (.635 mm)
BELOW SURFACE
OIL SEAL MUST BE
SQUARE IN BORE
C/S SEAL PTO END
SEAL PROTECTORL
DRIVE DOWN
WITH HAMMER
UNTIL SEAL IS
FLUSH WITH COVER
OIL SEAL
BEARING OR
CYLINDER COVER
(Removed from engine)
USE THIS METHOD TO DRIVE OIL SEALS FLUSH
AND SQUARE INTO THE SEAL RECEPTACLE
SEAL DRIVER
SEAL
PROTECTOR/
INSTALLER