Service; Disassembly Procedure - Tecumseh ECV105 Technician's Handbook

5. Check the engine valve lash. Reset the valves at the proper lash.
6. Check the valves for proper seating and valve guide lash. Recondition the valves and seats. Replace the valves
if necessary.
7. Check the ignition timing. Check the flywheel key for partial shearing.

SERVICE

DISASSEMBLY PROCEDURE

The following procedures apply to most engine models.
Actual procedure may vary.
1. Disconnect the high tension lead from the spark plug.
Remove the spark plug.
2. Drain the oil from the crankcase. Drain or shut off the
fuel supply.
3. Remove the air cleaner assembly.
4. Remove the fuel tank if it is attached to the engine.
Fuel tanks may be held on with bolts, screws, or some
models require taps upward with a soft face hammer
loosening the plastic tank wedged in the blower
housing slots.
On some LEV engine models, removal of the bezel
cover is necessary to view the engine identification
or to provide access to the recoil assembly screws.
Push in toward the spark plug end (as shown), lift up
to clear the recoil, then pull the cover away from the
spark plug to remove. (diag. 11)
5. Remove the blower housing by first unscrewing the
screw holding the dipstick tube to the blower housing
or unscrewing the dipstick tube and removing the
remaining bolts on the blower housing.
6. Unplug the ignition kill wire from the terminal on top
of the ignition module and unbolt the ignition module.
7. Remove the flywheel nut, washer, and starter cup.
Use a strap wrench (part # 670305) to hold the
flywheel from turning (diag. 12). Thread the
appropriate flywheel knock-off tool part # 670103,
(7/16") or part # 670169 (1/2") on the crankshaft until
it bottoms out, then back-off one complete turn. Using
a large screwdriver, lift upward under the flywheel
and tap sharply and squarely on the knock-off tool to
break the flywheel loose. If necessary, rotate the
flywheel a half turn and repeat until it loosens (diag.
13). A flywheel puller (part # 670306) may be used
on engines with cored holes and also on flywheels
with holes drilled and tapped (diag. 14).
NOTE: DO NOT USE A JAW TYPE PULLER.
8. Remove the flywheel key, stator, and baffle plate.
9. Remove the muffler.
10. Remove the intake pipe and the carburetor. Be careful
not to bend or damage the linkage when removing.
Mark the hookup points or diagram the linkage
arrangement to aid in reassembly.
11. Remove the cylinder head.
12. Remove the crankcase breather.
MODEL AND
D.O.M. NUMBER
DECAL
LOCATED
UNDER COVER
(IF SO EQUIPPED)
FLYWHEEL
METAL HAMMER
(continued on top of next page)
COVER BEZEL
SOCKET WRENCH
FLYWHEEL
TOOL
KNOCK OFF TOOL
PRESS IN AND LIFT
HERE TO RELEASE
COVER
11
12
SCREWDRIVER TO
RAISE FLYWHEEL
13
14
79