Counterbalance Service; Flywheel Service - Tecumseh ECV105 Technician's Handbook

COUNTERBALANCE SERVICE

To correctly align the Ultra-Balance
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. 56 & 57).

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. 58).
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.
® system, rotate the
DRIVE GEAR
CAMSHAFT
KEYWAY
DRIVE
GEAR
IRON WHEEL
GOVERNOR
FLANGE
56
COUNTER
BALANCE
SHAFT
57
POLYPROPYLENE
PORTION OF
FLYWHEEL
58
89