MCD Racing RR5 Competition - Engine Operation and Tuning; Fuel Preparation and Engine Shut-off; Carburetor Mixture Adjustment

9
Fll the fuel tank. Use only mnmum 95 Octane gasolne mxed wth hgh qualty two-cycle engne ol.
Use a 20:1 rato gasolne to ol. (e.g. 250ml oil mixed with 5lt Fuel)
Carburetor default settings
Starting the engine
Starting the Engine
Preparing fuel
The engne s provded wth an ntegrated fuel pump to get fuel to the
carburetor. The carburetor features a manual pump (B) wth a transparent
cover to see the fuel flow. Follow the steps below to start the engne.
Be sure you understand all engne nstructons before attemptng to start the engne. Turn on the transmtter
frst, then the recever before startng the engne.
1. Pump the prmer bulb on the carburetor(B n
Figure M) untl t s flled.
2. Set the choke lever(A n Figure M) as shown.
3. Pull the starter cord 3 tmes slowly for the fuel
to get n the cylnder.(Do not pull the cord fast
and more than 50-60cm)
4. Set the choke lever as shown.
5. Pull the starter cord rapdly 5-6 tmes untl the
engne starts.(Do not pull the cord more than 50-60cm)
6. When the engne starts, set the dle f ts too hgh
(vehcle moves at dle) or too low(engne stops runnng
from the dle screw shown n Figure N.
7. If the engne does not start set the carburetor to
default settngs as ndcated above.
Caution!
Figure M
Shutting the engine o
Push engne stop swtch E shown n Figure M. ( For RR5 cut the body from the ndcated
area n order to access the engine switch when the body s mounted.)
Slght adjustments of the carburetor mght be needed dependng on the external factors such as mxture,
spark plug, muffler and envronmental factors(ar pressure, humdty and temperature).
Fne-tunng dle and full throttle settngs wll only work after the engne s fully broken n. The factory settngs
provde a rch mxture that results n a sgnfcant blue smoke from the exhaust.
In case the dle-mxture needle L or the man needle H were accdentally altered, turn the settng screws H
and L clockwse as far as they wll go. Afterwards, turn the H screw 1hour 30mns +- 5mns turns counter-clockwse
and the L-screw 1 hour 10mns +- 5mns counter-clockwse. (As explaned n Figure O below)
H needle
L needle
Idle Screw
Figure N
1 hour(60mns) 5mns30mns
H Needle:
1Hour 30mns
+- 5mns
+ +-
1 hour(60mns) 5mns10mns
L Needle:
1Hour 10mns
+- 5mns
+ +-
Figure O