Breaking The Force 28 Nitro Engine - Carson CNB Betriebsanleitung

IMPORTANT!
lf the EMS-System does not work properly, please do not
force it! The engine has probably become flooded. Proceed as
described on page 28.
Once the engine is running, 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 carburretor.
WARNING
Be careful not to touch any parts of the
engine or the tuned pipe because they
will be hot.
g. Breaking the Force 28 nitro engine
The Force 28 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 16% 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, 25 % nitromethane.
Breaking the engine
Warning!
Do not adjust the low speed needle valve until
after the engine has been broken in. You can begin to adjust
the low speed needle valve after you have broken in the engine
and after you have read and understood step 2: Fine tuning
the engine below. The high speed needle valve is preset from
the factory for easy starting in most conditions for the break-in
period.
Engine tuning tip:
No two engines will have the exact same needle valve settings
once broken in. Different fuels used, different types and
heat-ranges of glow plugs, the outside air temperature and air
pressure all affect the engine.
The factory needle valve settings on page 14 are break-in
settings. lf you reset the needle valves to the factory settings,
the engine will run very rich and you will need to retune the
engine.
Picture 24
Air filter:
The air filter is a very important part of your engine. Failure to
use the air filter will damage the engine in a very short period
of time. Make sure that you „wet" the air filter as described on
page 15 and use a prefilter sleeve if you are driving in dusty
conditions.
Engine break in tip:
During break-in, it's normal for excessive fuel oil and exhaust
residue to drip from the tuned pipe. Break-in the engine without
the body installed. It's important that the engine have aid
during the break-in process.
Once the engine starts, keep the glow starter attached to the
glow plug and let the engine run for about 10 seconds without
giving it throttle. This will allow the engine to warm up. At this
point the engine should be running very „rich" and the engine
will also sound like it's running rough.
After the engine has been running for about 10 seconds,
remove the glow starter from the glow plug. Advance the
throttle in short, quick bursts and drive the Buggy for about 2-3
minutes. lf the engine is running rich enough, you should notice
smoke coming from the tuned pipe and the engine should
sound like it's running very rough. Also, the Buggy will barely
be moving because the engine is running so rich that it won't
produce much power. This is what you want for now.
lf there is not smoke coming from the tuned pipe, richen the
high speed needle valve 1/4 turn. After 2-3 minutes stop the
engine by pinching the fuel line to the carburretor.
CARSON Nitro Buggy CNB 204016
GB
19