User Manual

5
PULL START ENGINES:
1. Installtheengineintoyourvehicle.
2. Turn on the radio system.
3. Make sure the throttle trigger on the transmitter is in
the idle (neutral) position and the carburetor is in the
idle position also.
4. Connect the glow igniter to the engine.
5. Use short quick pulls to start the engine.
When using a recoil starter, never pull the rope out its full
length. Doing so may cause damage and recoil starter
failure. Quick, short pulls of the recoil starter are the best
technique to use. Never extend the starter rope more than
12 inches. Should the pull starter be extremely difficult
to pull (will not extend out of the assembly), the engine
may be flooded (hydro-locked). Excess fuel between the
cylinder head and piston will not allow the piston to travel
through its full range of compression, effectively “locking
up” the engine. Should this occur, remove the glow igniter
from the plug. Use a glow plug wrench (DYN2510) to
remove the glow plug and turn the model upside down.
Give the recoil starter a few short pulls to clear out the
fuel, reinstall the glow plug and start again.
Anothercommonoccurrencewithnewenginesisfor
the piston to become stuck at the top of its travel in
the sleeve. This occurrence is completely different from
hydro-locking and is caused by the tight fit of the piston
andsleevewhentheengineisnew.Inordertorelieve
the stuck piston use a flat blade screwdriver through the
flywheel’s access hole in order to pry the flywheel through
its rotation.
This sticking issue should be completely eliminated by the
break-in procedure.
Ifavailable,werecommendusingaspinstarteror
starter box for the initial starts, even with a pull start
equipped engine.
You may need to “blip” the throttle on the transmitter
(applying throttle on/off) while trying to start the engine,
as new engines are more difficult to start due to the tight
piston/cylinder fit.
TANK-BY-TANK BREAK-IN PROCEDURE:
TANK #1
1. Once the engine starts the exhaust should emit lots
of blue/white smoke, indicating that the engine is rich
(a good thing during break-in). During the first tank
of fuel, you may wish to set a higher than normal idle
speed and/or leave the glow igniter attached in order
to keep the engine from stalling.
2. Drive your vehicle on a large, flat, paved surface. Over
a 2-second time span, gently pull the throttle trigger
to1/4throttleandbackagaintoidle.Accelerateand
decelerate as smoothly as you can.
3. While accelerating, look for thick blue/white smoke
fromtheexhaust.Ifthereisnosmoke,richenthe
high-speed fuel mixture 2 hours by turning the needle
counterclockwise.Imaginetheslotintheneedleis
likethehourhandonaclock.Adjustitasthough
you were moving the hour hand from one hour to the
previous one.
4. Regularly check the fuel level while running. When
the fuel tank is nearly empty, shut off the engine by
touching the flywheel with a tool handle or small
block of wood. Do this when the engine is at idle
speed only.
5. Rotate the flywheel so that the piston is at bottom
dead center (BDC). BDC can be found by rolling the
engine over by the flywheel with your finger into the
area of rotation that is “free” and without any drag.
Let the engine cool for 15 minutes.
TANK #2
1. Drive your vehicle on a large, flat, paved surface. Over
a 2-second time span gently pull the throttle trigger
to1/2throttleandbackagaintoidle.Accelerateand
decelerate as smoothly as you can.
2. Regularly check the fuel level while running. When
the fuel tank is nearly empty, shut off the engine by
touching the flywheel with a tool handle or small block
of wood. Do this when the engine is at idle speed
only.
3. Rotate the flywheel so that the piston is at bottom dead
center (BDC). Let the engine cool for 15 minutes.
TANK #3
1. Drive your vehicle on a large, flat, paved surface. Over
a 3-second time span gently pull the throttle trigger
to1/2throttleandbackagaintoidle.Accelerateand
decelerate as smoothly as you can.
2. Astheenginebreaksin,theidlespeedmayincrease
and cause your vehicle to try to creep forward when
stopped.Ifthisbeginstooccur,reducetheidlespeed
by turning the idle adjustment on the carburetor
counterclockwise.
3. Regularly check the fuel level while running. When
the fuel tank is nearly empty, shut off the engine by
touching the flywheel with a tool handle or small block
of wood. Do this when the engine is at idle speed only.
4. Rotate the flywheel so that the piston is at bottom dead
center (BDC). Let the engine cool for 15 minutes.
TANK #4
1. Drive your vehicle on a large, flat, paved surface. Over
a 3-second time span gently pull the throttle trigger
to3/4throttleandbackagaintoidle.Accelerateand
decelerate as smoothly as you can.
2. Regularly check the fuel level while running. When
the fuel tank is nearly empty, shut off the engine by
touching the flywheel with a tool handle or small block
of wood. Do this when the engine is at idle speed only.
3. Rotate the flywheel so that the piston is at bottom dead
center (BDC). Let the engine cool for 15 minutes.