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UPgrADE TIP
To prevent your
X
ST 4WD Truggy RTR from going out of control should the radio control system
encounter signal loss, we strongly suggest using an electronic failsafe. The electronic failsafe is
connected between the throttle/brake servo and the receiver. The failsafe is designed to elec-
tronically bring the throttle to idle and apply a preset amount of braking force should the radio
control system lose its signal. This will prevent the
X
ST 4WD Truggy RTR from driving out of control and causing damage/injury.
A failsafe will not will not work if the radio control system loses its signal due to battery failure (i.e., loss of battery capacity
or the battery coming unplugged) or throttle servo failure.
WArnIng!! PlEASE rEAD THIS InFOrMATIOn BEFOrE PrOCEEDIng!!
BECOMIng FAMIlIAr WITH THE XTM rACIng 24.7 nITrO EngInE
Your
X
ST 4WD Truggy RTR comes equipped with the user-friendly and powerful XTM Racing 24.7 nitro engine. Before starting the
engine for the first time, you
MUST
read this section and the next two sections very carefully. This section details the different parts
of the engine's carburettor and how to adjust the carburettor's needle valves to tune the engine. The remaining two sections detail
fueling and starting the engine, then breaking in the engine.
Failure to read this information may result in your not knowing how
to properly operate your new engine, which can result in poor engine performance and even damage to the engine itself.
STEP 4: InSTAllIng THE AIr FIlTEr
q
Remove the foam air filter element from the plastic bag and push it onto the air filter
base. Secure the top of the air filter in place, using the screw provided.
IMPORTANT:
The foam air filter element comes pre-oiled with air filter oil. See the
information below on how to clean and reoil the foam air filter element when it
gets dirty.
l
To clean the air filter, remove the air filter
element and wash it thoroughly in warm water
and a small amount of liquid detergent. After
it's clean, allow it to dry, then reoil it and install
it back onto the air filter housing. To wet the
air filter element, simply squeeze an ample
amount of air filter oil onto the air filter element
and work it through the air filter element, using
your fingers. Use enough oil to completely
saturate the air filter element. The entire air filter element should be oiled, but not so much that excess oil is dripping from it.
Under no circumstances should you operate the engine without the air filter installed on the carburettor. The air filter prevents
dust and debris from entering the engine and damaging it. If you operate your engine at any time without the air filter installed,
the engine will be quickly damaged and require replacement of the piston and sleeve (liner).
If you'll be running your
X
ST 4WD Truggy RTR in dusty
or wet conditions, we suggest using a prefilter sleeve
over the air filter. Wet the main air filter element, then
simply slide the prefilter sleeve over the air filter. It's
not necessary, nor desirable, to oil the prefilter sleeve.
We suggest using XTM Racing 1/8th Scale Prefilter
Sleeves (P/N 149412).
UPgrADE TIP
PRO TIP:
Place the cleaned air filter element in a plastic bag and then apply the air filter oil on it. Close the plastic bag and work the
oil into the air filter element. This allows you to work the oil into the element without getting excess oil on your hands.
q
Slip the
short end
of the silicone elbow onto the base of the air filter and secure it
in place, using one nylon cable tie; then, slip the
long end
of the air filter assembly
over the base of the carburettor and secure it in place, using a second nylon cable
tie.
IMPORTANT:
The short end of the silicone elbow is attached to the air filter and the
long end is attached to the carburettor, otherwise it could foul the spur gear.
