BEFORE OPERATION:
•
Prepare only the amount of gasoline needed.
•
If the engine was just run, make sure you allow enough time for it
to cool down before you run it again. Also, wipe off any residue the
engine may have blown on the FireHammer MT.
•
Fuel the FireHammer MT with the adequate gasoline mix.
ENGINE BREAK IN:
•
To break in your FireHammer MT engine, you need to run the
engine for two tanks of fuel with a fuel mixture that contains a
25:1 (4%) fuel/oil ratio (5oz. per 1 gallon).
•
Do not adjust the high-speed needle on the carburetor to break
in the engine. If you do so, carbon will accumulate in the spark
plug and making ignition difficult.
•
Do not run at full power for extended periods of time while
breaking in your engine.
•
Run the FireHammer MT with the body off for break in.
RUNNING THE FIREHAMMER MT AFTER BREAK IN:
•
Once the engine is broken in, use 40:1 (2.5%) fuel/oil mix
(3.2oz. per 1 gallon).
ENGINE ADJUSTMENTS:
•
Always make high and low speed needle adjustments with the
engine shut off.
•
Always make small adjustment to the needles to prevent over-
adjustment.
•
To lean the engine, make a clockwise adjustment to the desired
needle.
•
It is not necessary to change the needle settings if the engine
is running smoothly. Normally only the high speed needle will
need adjustment from time to time, and only a small amount.
IDLE ADJUSTMENT:
Do not confuse the idle screw with the low speed needle. The idle
screw physically adjusts how much the carburetor valve can close. The
low speed needle adjusts the gasoline to air mixture when the engine
is running at low rpm. If your engine appears to work correctly except
that the low rpm are not as low as you want them to be, then adjust the
idle screw. If your engine behaves erratically at low rpm, then adjust the
low speed needle. When adjusting, turn the screw about 1/8th of a turn
each time. A dirty plug will make it difficult to adjust the idle rpm.
PRECAUTIONS
•
Do not use silicone fuel tubing on the model. The gasoline will
attack it. Use vinyl or neoprene rubber fuel line.
•
Make sure the fuel line is not against the cylinder head. The
heat from the head can damage the fuel tubing.
•
The engine will be hot after being run. Allow the engine to
thoroughly cool before touching it.
•
Do not leave fuel in the tank or lines while transporting.
FUELING THE FIREHAMMER MT
1. Unscrew the fuel cap from the fuel tank.
2. Pour the proper fuel mixture into the fuel tank.
3. Thread the fuel cap back into the fuel tank, making sure that the
fuel cap is thoroughly tightened.
4. Wipe off any fuel that may have spilled onto the truck during the
fueling process with an old towel.
STARTING THE FIREHAMMER MT
1. Turn on the transmitter and then the receiver.
2. Check the throttle and steering to make sure they are
functioning properly.
3. Prime the engine. Push the primer button until you start to see fuel
in it. Note: Do not press the primer after you start to see fuel.
This will flood the engine and cause it to be hard to start.
4. Rotate the choke lever to the closed position.
5. Tug on the recoil until the engine starts. (The engine should start
after a few pulls). It may be necessary to slightly open the
throttle to get the engine to start.
6. Once the engine starts, return the throttle to neutral and open the
choke back up. Note: If you do not open the choke after the
engine starts, it will probably die quickly.
SHUTTING THE FIREHAMMER MT OFF
To stop the engine press the red shut off switch on the engine. We
recommend that you familiarize yourself with the switch and what
the easiest way is to get to it with the body on. This way you are
not fumbling around to find it in case of an emergency.
SPARK PLUG
The recommended spark plug is a DuraTrax NGK CMR 7H Spark
Plug (DTXG3100). To avoid improper operation or possible engine
damage, do not use any other type of spark plugs. The plug gap
should be .025" to .030" (if the plug gap is incorrect, adjust it with
a spark plug gapping tool, wash it with gasoline and allow it to dry
completely before you reinstall the plug into the engine).
CHOKE
CLO
S
ED
CHOKE
OPEN
R
R
UNNING
UNNING
THE
THE
ENGINE
ENGINE
IDLE
HIGH
S
PEED
LOW
S
PEED
PREP
PREP
ARE
ARE
THE
THE
ENGINE
ENGINE
7
