STEP 36:
Reinstall the carburetor with a new o-ring, header, a
NEW glowplug, and engine mount. Use a new header
gasket when re-installing the header on the engine.
Reinstall the engine in the truck in the reverse order
of removal. Don’t forget to reconnect the yellow
grounding wire to the engine mount.The rebuilt
engine must now be broken in.
STEP 31:
Reinstall the backplate and a new backplate gasket
with the 3x8mm caphead machine screws.Tighten the
screws in small increments, in a criss-cross pattern
until all the screws are tight.
STEP 32:
Install the appropriate size ball bearing into one side of
the clutch bell gear. The Nitro Stampede comes stock
with an 18-tooth clutch bell gear which requires
5x11mm ball bearings.
STEP 33:
Turn the gear over and install the other ball bearing.
STEP 34:
Install the split-beveled cone onto the crankshaft.Next,
install the flywheel. Install the clutch adapter nut with a
10mm deep socket. Grip
the flywheel with pliers
while tightening the
adapter nut.
engagement). Next, install
installed). Install the
clip (see step 14).
STEP 25:
To assemble the connecting rod and piston, place a
drop of caster oil in the top end of the connecting rod.
Insert the wrist pin through the piston and the top of
the connecting rod. Secure the wrist pin with the G-
clip. Make sure the G-clip fits securely into the groove
machined in the piston. Be careful not to scratch the
sides of the piston.
STEP 26:
Reinstall the crankshaft into the engine and make sure
that it spins freely. Insert the connecting rod and piston
assembly through the top of the crankcase. The G-clip
should face the carburetor. Put a drop of castor or
after-run oil in the bottom end of the connecting rod.
Use your fingers to gently push the end of the con-
necting rod over the crankshaft journal.
STEP 27:
Place another drop of oil on the connecting rod bush-
ing. Rotate the crankshaft several times to distribute
the oil.
STEP 28:
Insert the sleeve into the top of the crankcase. Rotate
the sleeve so that the notch in the sleeve will line up
with the pin in the crankcase. Holding the engine
upside down will make it easier for the sleeve to go
over the piston.
STEP 29:
Install new head gaskets on the head. Use one thick
and one thin gasket. Reinstall the head using the
3x12mm caphead machine screws.Tighten the screws
in small increments, in a criss-cross pattern, until all
the screws are tight.
STEP 30:
Reinstall the starter shaft. Align the notch in the starter
shaft with the crankshaft journal pin (arrow).
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