XTM Racing X-Cellerator Nitro - Section 5: Becoming Familiar with the Xtm Racing.18 Nitro Engine

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❑ Carefully pull the air filter assembly off of the carburetor.
❑ Pull back on the throttle trigger. The carburetor barrel should
open completely and the brake should be disengaged.
❑ Let go of the trigger and the carburetor barrel should return to its
idle position - open about 1/16". The brake should still be disengaged.
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✦✦
✦IMPORTANT
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✦ If the carburetor barrel does not open when you
pull back on the trigger, flip the throttle servo reversing switch on
the top of the transmitter to change the direction.
If the carburetor barrel does not open completely, move the throttle
trim lever on the transmitter until the barrel is opened completely
when you pull back completely on the trigger.
❑ Push the throttle trigger forward. The carburetor barrel should
stay in the idle position and the brake lever should move and engage
the brake.
❑ Let go of the trigger and the brake lever should disengage.
✦✦
✦✦
✦IMPORTANT
✦✦
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✦ If necessary, you can adjust the brake linkage by
sliding the wheel collar (on the brake linkage wire) forward or back.
See page # 15 "Adjusting the Brake Linkage" for more details.
❑ Turn off the transmitter and receiver for now and push the air
filter back onto the carburetor. Never run your X-Cellerator Nitro
Stadium Racer without the air filter in place.
Your X-Cellerator Nitro Stadium Racer comes equipped with the user-friendly and powerful XTM Racing .18 nitro engine.
Before starting the engine for the first time, please read these next two sections very carefully.
Idle Stop Screw:
The idle stop screw is preset from the factory and should not require
adjustment. The idle stop screw adjusts the closure of the throttle
barrel. We recommend that the idle stop screw be adjusted so that
the carburetor barrel stays open about 1/16". Turning the screw
clockwise will cause the barrel to stay open more. Turning the screw
counterclockwise will allow the barrel to close more.
High Speed Needle Valve:
The high speed needle valve is preset from the factory for the initial starting procedure. Do not make adjustments to it at this time. The
high speed needle valve is used to meter the air/fuel mixture at full throttle. Turn the needle clockwise to lean the mixture or turn the
needle counter-clockwise to richen the mixture. When you start the engine for the very first time, the needle valve should be turned in
completely, then backed out 3 turns. When you start the engine after that, leave the needle valve in the same position it was in when you
shut down the engine.
SECTION 5: BECOMING FAMILIAR WITH THE XTM RACING .18 NITRO ENGINE
Please refer to the photo below to familiarize yourself with your engine's carburetor. You should have a small flat blade screwdriver
handy to make adjustments to the carburetor.