10
en
MaIntenance
After performing the necessary procedures for storage (see When
You Are Finished, above), put several drops of after run oil in the
carburetor and turn the engine over with the starter for several seconds
to coat the internal engine parts.
Clean the air filter regularly using warm soapy water, then allow
it to air dry before applying air filter oil. Keeping your air filter
clean and oiled is vital to the life of your engine.
When you are fInIshed
1. Allow the vehicle to idle until it has used all of the fuel in the tank.
Never store the vehicle with fuel in the tank or without running the
engine completely out of fuel. Doing so will damage the engine.
3. Replace the AA batteries in the battery holder if necessary or
recharge the receiver pack (if you choose a 6V Ni-Cd or Ni-MH
receiver pack).
2. Power off the receiver and then power off the transmitter.
Remove the receiver battery pack from the vehicle.
POWER
ST. TRIM
TH. TRIM
ST. RATE
hi-speed adjustment
After initial acceleration, the engine should pull at a steady rate while
maintaining a two-stroke whine and a noticeable trail of smoke. If the
engine labors and is sluggish with heavy smoke, the mixture is too rich
and needs to be leaned by turning the high-speed needle clockwise in
one-hour increments until it runs smoothly. If the engine isn’t smoking
or starts to die after acceleration, it is too lean and you must richen the
mixture by turning the needle counterclockwise. Don’t be confused by
the sound of the engine and the actual performance. A leaner mixture
will produce an exhaust note with a higher pitch but this does not
necessarily mean improved performance, as the engine is on the verge
of overheating and may incur possible damage. Ideally you want to run
the engine so that it is on the slightly rich side of optimum. This will
give you the best combination of speed and engine life.
cautIon:
The engine is too lean and overheating if it
accelerates rapidly with a high-pitched scream then seems to
labor, stops smoking, or loses speed. This can be caused by the
terrain, atmospheric conditions, or drastic altitude changes. To
avoid permanent engine damage,
immediately
richen the mixture
by turning the high-speed needle counterclockwise at least “two
hours” and be prepared for further adjustments before running
any more. The normal operating temperature should be in the
190 to 220° F (88 to 105° C) range.
