Starting The Engine; Engine Break-In - THUNDER TIGER EB 4 RALLY CAR Instruction Manual

14

STARTING THE ENGINE

a
a.
Turn on the radio (transmitter first, then receiver)
b.
Clip the glow plug igniter onto engine's glow plug.
c.
Pull on the engine starter, release, repeat until the engine starts. Throttle maybe required to be opened momentarily,
step 9a (release back to neutral immediately after it starts).
Remove the glow plug igniter from engine after engine has started and warmed up. If the engine stops right after
the igniter is removed, the carburetor setting is too rich. Please refer to engine setting section.
If engine starter becomes hard to pull, the engine maybe flooded. To unflood an engine, remove the glow plug from
engine, flip the car upside down, and pull on the starter to release excess fuel. Then, reinstall the glow plug and
repeat the engine starting procedure.
15

ENGINE BREAK-IN

For a new engine (break-in setting), the high speed needle needs to be set as rich as possible. Turn the high speed
needle 1/4 turn counterclockwise from initial setting (2.5 turns from fully closed). Repeat step 15b. Keep doing this
until the engine stalls at full throttle, then turn the high speed needle 1/4 turn clockwise. Run the car in an open parking
lot with this rich engine setting for at least 5 tanks of fuel to complete the break-in process. It is normal for new engines
to stall many times during this time due to the rich setting. When it does, just restart the engine. After break-in, follow
the engine setting procedure to set the carburetor for normal operations.
ENGINE SETTING
Due to different fuel formula, operating elevation, humidity . . . etc. The engine may / may not operate properly at initial
setting. Please follow the following procedure to achieve proper carburetor setting. Do not perform this procedure until
the engine has been properly broken in.
a. Start the engine.
b. With a running engine, run the car back and foreth in a straight line (full throttle achieved during each passage) in an
open parking lot. Repeat, and note the sound of the exhaust. Do not hold the throttle open with car off the ground or
the engine connect rod may break.
c. If the exhaust does not reach a high pitch note, turn the high speed needle (long needle, extending from carburetor,
pointing up) 1/4 turn clockwise, and repeat step 15b.
If the exhaust reaches a high pitch note immediately, turn the high speed needle 1/4 turn counterclockwise, and repeat
step 15b.
d. Repeat step 15c until the engine reaches optimum setting (turning in the high speed needle will no longer have an
effect at full throttle and turning out the needle will cause the engine's full throttle rpm to drop a little).
For normal operations, turn the high speed needle 1/4 turn counterclockwise from the optimum high speed needle
setting.
e. To set the idle, turn the idle screw in (higher rpm) or out (lower rpm).
Basically, the idle needs to be set at the lowest possible point before the engine stalls.
f. To set the low speed needle (larger needle on the side of carburetor body), the engine needs to be broken-in and
high speed needle needs to be set first.
g. Repeating step 15b every 10 seconds (1 second of full throttle and 10 seconds of idle). If the engine rpm at idle
drops after a few seconds and stalls, then turn in the low speed needle (clockwise) 1/4 turn. If the engine rpm stays
the same or goes up at idle, then turn out the low speed needle (counterclockwise) 1/4 turn.
h. Keep repeating step 15g until the engine rpm drops (goes to idle rpm, then drops a few more rpm after a few seconds)
but does not stall at idle.
b
7
c