Tecumseh HHM80 Technician's Handbook

89
59
60
61
COUNTERBALANCE SERVICE
To correctly align the Ultra-Balance
®
system, rotate the
piston to top dead center (TDC) and insert the
counterbalance shaft into its boss in the cylinder block
with the arrow on the gear pointing toward the crankshaft.
Slide the drive gear on the crankshaft, making sure the
drive gear is located on the crankshaft key and that the
arrow on the drive gear is aligned with the arrow on the
gear on the counterbalance shaft (diag. 59 & 60).
FLYWHEEL SERVICE
Some Tecumseh engines have polypropylene fans that are
replaceable. A damaged fan can be replaced by tapping
on the outside portion of the fan until it separates from the
iron portion of the flywheel (diag. 61).
A new fan may be installed by heating the polypropylene
fan in a pan of boiling water. Suspend the fan off the bottom
of the pan while heating. Using adequate protection, install
the hot fan to the flywheel. Make sure the fan locators fit
into the hub area of the flywheel.
Flywheel magnets are factory installed and permanently
bonded to the flywheel. If the magnets are damaged or
lose their magnetic strength, the flywheel must be replaced.
COUNTER
BALANCE
SHAFT
DRIVE
GEAR
KEYWAY
CAMSHAFT
DRIVE GEAR
GOVERNOR
FLANGE
POLYPROPYLENE
PORTION OF
FLYWHEEL
IRON WHEEL

Tecumseh HHM80 Specifications

General

Brand	Tecumseh
Model	HHM80
Category	Engine
Language	English