XTM Racing X-Factor2 Operation Manual Download

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Connect a fully charged glow starter to the top of the glow plug, making sure that the

glow starter is locked firmly onto the top of the glow plug. You don't want it to fall off while
you're trying to start the engine.

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With the throttle still in the idle position, hold the truck firmly with one hand by the

carrying handle and carefully pull on the pull-starter cord, using short, quick pulls, until
the engine starts.

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After the engine starts, release the pull-starter cord, allow the engine to run for about

10 seconds, then remove the glow starter from the glow plug.

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IMPORTANT

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If the engine does not start after a dozen pulls, refer to the

troubleshooting guide starting on page # 25 before continuing.

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To stop the engine, carefully pinch the fuel line with your fingers until the engine stops.

Make sure to pinch the fuel pick-up line and not the fuel pressure line. The fuel pick-up
line is the one connected to the carburetor.

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PRO TIP

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When you pinch the fuel line to stop the engine, you must pinch it hard

and hold it. The engine will rev up quickly, then die. We suggest holding the truck by
the carrying handle while doing this, so that it doesn't lurch out of your hands.

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WARNING

✦

Be careful not to touch any parts of the engine or the exhaust pipe

because they will be hot.

Until you're actually ready to break-in the engine, do not run the engine for more than a few minutes. If you run the engine longer
without doing the proper break-in procedures, damage to the engine can occur.

WARNING ABOUT RUNNING YOUR ENGINE FOR THE FIRST TIME

SECTION 6: BREAKING IN THE XTM RACING 24.7 NITRO ENGINE

The XTM Racing 24.7 engine is an ABC engine. The cylinder sleeve is tapered at the top, causing severe resistance when the piston
moves through the top of the stroke. This is normal. When the engine heats up to operating temperature, this resistance will
decrease and the proper clearance will be achieved. The break-in procedure will guide you through the steps necessary to properly
break in your new engine. Please follow the steps closely.

Fuel Recommendation:

Fuel can make a big difference in the way your engine performs. For the
break-in period you should use a fuel specifically designed for R/C car engines
that contains no more than 20% nitromethane. Once the engine has been
adequately broken in (about 45 minutes of run-time) you can switch to an R/C car
fuel containing up to, but no more than, 30% nitromethane.

✦

WARNING

✦

We do not recommend using fuels designed for R/C airplane

engine use. These fuels do not contain the proper amount of lubricants;
therefore, they will cause the engine to overheat and severe damage to the
engine will result.

ENGINE BREAK-IN TIP

To make sure that you're not
leaning out the engine too
much and overheating it
during the break-in process,
we suggest using a temp gun
t o m o n i t o r t h e e n g i n e ' s
temperature. During break-in,
the temperature of the engine
should not surpass 230º.

When the engine is new, it can sometimes be difficult to turn over using the pull-starter.
You may find you need to pull the pull-starter harder than you expect. A trick to help this
is to loosen the glow plug slightly, start the engine, then remove the glow starter and
retighten the glow plug. This effectively lessens the engine's compression, making it
easier to turn over with the pull-starter.

NEW ENGINE STARTING TIP

Continued On Next Page

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