19 MI-1070
TAPPET ADJUSTMENT (Fig. 26)
With tappet in its lowest position, hold valve down
and insert feeler gauge between valve and tappet
stems. The clearance with engine
cold:
inlet – 0.006 inch exhaust – 0.012 inch
Caution:
Be sure exhaust tappet is not riding on com-
pression release spoiler cam.
If the clearance is less than it should be, grind the
end of the valve stem a very little at a time and re-
measure. Stems must be ground square and flat. Re-
assemble the valve springs, exhaust rotator and inlet
spring seat, locking them in place with the retainer
locks. Be sure the valve springs are seated properly
in the valve spring locating cups lest they cock off
to one side and hamper the valve action.
To check tappet clearance on an assembled engine;
turn crankshaft so that take-off or flywheel keyways
are up, or in a 12 o’clock position, and on compres-
sion stroke. Observe position of valve stems in the
inspection compartment. Both valves should be in
their lowest position (closed), then proceed to check
clearance.
FLYWHEEL (Fig’s. 27 and 28)
Place a 1-1/2” box or socket wrench on to flywheel
nut and give the wrench a sharp blow with a soft ham-
mer.
Do not remove nut,
simply unscrew it flush with
end of shaft.
Use a
knock-off
type
puller
to loosen flywheel. If
this type of tool is not available, proceed as follows:
Turn crankshaft, by means of the flywheel, until the
flywheel keyway is located in about a 10 o’clock
position. Wedge a box wrench or pry bar between fly-
wheel and crankcase at the above keyway position, to
act as a lever. Then, strike end of flywheel nut with a
babbitt hammer and at the same time wedge outward
with the pry bar.
See Fig. 28.
Loosen flywheel but do not remove:
It is necessary
that the flywheel be left on to support crankshaft dur-
ing removal of gear cover and connecting rod, and thus
prevent damage to the oil seal in the stator plate.
Take
flywheel off after piston and rod are removed.
Summary of Contents for Air Cooled TR-10D
Page 6: ...MI 937 2 4 Fig 1 289860C TAKE OFF rear and LEFT HAND SIDE VIEW of ENGINE...
Page 7: ...5 MI 938 2 FAN END front and RIGHT HAND SIDE VIEW of ENGINE...
Page 8: ...MI 939 2 6 SECTIONAL VIEWS OF ENGINE...
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Page 29: ...PARTS FOR ENGINE MODELS TRA 10D AND TR 10D...
Page 30: ...PARTS FOR ENGINE MODELS TRA 10D AND TR 10D...
Page 31: ...PARTS FOR ENGINE MODELS TRA 10D AND TR 10D...
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Page 46: ...WISCONSIN MOTOR CORPORATION MILWAUKEE WISCONSIN 532466 PRINTED IN U S A...