Thrust Washer: The washer used along with the prop nut to help protect
and hold the propeller on to the motor.
Carburetor: usually located on the front of the motor. It has an opening
which allows air to enter and mix with the fuel.
Throttle Arm: Usually located on the right side of the carburetor. When
moved back and forth this advances carburetor barrel open and closed
Carburetor Barrel: looking inside the air intake of the carburetor move
the throttle arm back and forth, you’ll see a round cylinder with a machined hole through it. As you move the throttle
back and forth the hole opens and closes. This is the Carburetor Barrel.
High and Low Throttle: when the carburetor barrel hole is completely
open this is the high throttle position. When the barrel hole is almost closed (1/8 to 1/16 open) this is low throttle. Completely
closing the barrel will turn the motor off.
Back Plate: The metal covering on the very rear of the motor usual held
on by 4 screws, though some screw on.
High Speed Needle: This is mostly located in two different areas. On
the left side of the carburetor (looking at it from the rear forward) itself or on the left side of the motor attached to
the back plate.
Low Speed Needle: most are hidden or recessed in the throttle arm. Looking
at the motor from the side there is a small straight edge screw right dead center of the throttle arm. Though it may look
like a screw to hold down the throttle, in fact this is the low end needle valve. upon further inspection you will probably
find a small set screw or thin nut holding the throttle arm on.
Glow Plug: this resembles a miniature spark plug and sits on the very
top of the motor. Some are positioned towards the rear of the motor or angled slightly back to help keep fingers out or away
from the propeller. When power is added to the glow plug with a glow plug driver, it should glow bright orange.
Ni Starter / Glow Plug Driver: a device with a built in battery or wires
that hooked to a battery, used to supply power to the glow plug for starting.