Kyosho GXR28 Manuel D'instructions page 2

●ENGINE STARTING & BREAK-IN
Proceed as follows when starting and breaking the engine in:
1. Make sure the needle valve is unscrewed 4 turns from
closed position.
2. Fill fuel into the tank. Move the throttle lever to the high
position, prime the engine (push the choke button 2 ~ 3
times or put 2 ~ 3 drops of fuel directly into the carburetor)
and move the throttle lever back to the slow throttle position.
CAUTION: carefully check if no dirt or deposits clog the
tank!
3. Attach the booster cord or one-touch glow plug heater to the
engine in order to electrify the glow plug.
4. Quickly pull the recoil starter rope (starter knob) several
times. Only pull out 20 - 30cm of cord.
Caution: Be careful not to pull out more than 50cm of cord
because you may tear it and the spring inside the recoil
starter!
5. Once the engine is started, wait 5 ~ 10 seconds before de-
taching the booster cord or one-touch glow plug heater.
6. Run the engine another 2 ~ 3 tanks and make sure you do
not apply full throttle. Also afterwards, do not increase RPM
abruptly! Tighten the needle valve by 1/8 turns and continue
to run the engine, handling it gently.
Caution: After each tank, allow the engine to cool off
naturally!
7. During the break-in, adjust the idle rpm with the throttle val-
ve adjustment screw. If rotating it clockwise (right), idle rpm
increase. Idle rpm are halfway between rpm when the
clutch engages and rpm when the engine stalls. Set idle
rpm towards the lower end if possible.
Tighten the throttle valve
adjustment screw to
increase rpm.
Wide opening
Throttle Valve
Adjustment Screw
Unscrew the throttle
valve adjustment screw
to decrease rpm.
Narrow opening
8. Now adjust the needle valve. Its optimum setting is when
the engine performs best and the throttle control is in the
high position. If tightening it further, engine rpm will drop,
leading to engine damage. Once you have found the needle
valve's optimum setting, unscrew it 10 ~ 20ß for normal
operation.
9. Once the setting for normal operation is done, set the
air/fuel mixture adjustment screw. Stop the car and move
the throttle control from the idle position to high position. If
fumes exiting the muffler are white and rpm increase slowly,
fuel is too abundant during the idle. To lean the mixture,
rotate the air/fuel mixture adjustment screw clockwise (right),
each time 30 ~ 40ß. In the opposite case, if the engine stalls ,
fumes are not visible and rpm increase slowly, fuel is not
abundant enough. This time, richen the mixture and rotate
the screw anticlockwise (left), each time 30 ~ 40ß .
Note: The optimum setting may vary according to the
kind of glow plug and glow fuel used!
Note: The optimum setting may vary due to changing
weather conditions!
The best position of Needle-Valve must be opened the
Needle-Valve in between 2-1/2 and 3 turns from the fully
closed position. Warning! Closing the Needle-Valve too
much carries the risk of seriously damaging the engine.
Caution: Do these adjustments (from step 8) only while
running your car! The engine will be damaged
if the wheels are aloof from ground and
spinning free.
●MAINTENANCE
＊After running the engine, draw out any leftover fuel from the
fuel tank.
＊Draw out fuel from inside the engine as well. Fuel that
remains inside the engine, may clog the engine and make it
difficult to start.
＊Remove any dirt from the outside of the engine using
methanol and a brush. Do not allow fire or any excessive
heat source to come into contact with methanol which is
highly inflammable! This may cause fires!
Never use gasoline or thinner when
cleaning!
This may cause Fires !
Warning