AIRTUG
®
Assembly & Operations Instructions
MODEL: 10-SW
Airtug, LLC is not responsible for aircraft damage sustained when proper clearance is
not maintained between the tug and the aircraft and the surroundings.
WARNING:
This tug is shipped WITHOUT gas or oil in the engine. Using the 10W-30 oil provided,
fill to the “Full” mark on the dipstick. Fill the fuel tank with regular unleaded gasoline (Ethanol Free).
Engine Operation:
To start the engine, push the throttle all the way forward to the “choke”
position and press the
starter button
by foot located on the tug frame behind the engine. “Warm”
starts typically do not require the choke setting. Once started, adjust the engine to a low-mid range
power setting. For heavier aircraft, increase the power setting accordingly. The engine is stopped by
pulling the throttle all the way back towards the operator. Use a low amp battery charger (available at
Airtug 216-941-9781) to maintain a fully charged battery between use and especially in colder
environments.
Tug Operation:
The twist grip handle operates the hydrostatic transaxle.
Rotating the twist grips
forward or aft moves the Airtug accordingly. Rotating the grip slightly in either direction will move the
tug very slowly. As you increase the rotation of the handle grips, the tug speed increases. Maximum
torque is applied at very slow speeds ensuring excellent maneuverability in the hangar and around
other aircraft while rotating the handle grips fully results in maximum tug speed and minimum torque.
The hydrostatic transaxle provides smooth variable speed control throughout the entire range of grip
motion. The twist grip is spring loaded to “return-to-brake position.” This position locks the power-
train. The tug will not move in this position. Nevertheless, it is not recommended to walk away from
the tug while the engine is running. While moving the aircraft, braking is effected by gradually
returning the grip to the neutral or brake position. Even while moving an aircraft on a downgrade, the
tug will only go as fast as you have the twist grip turned. Braking too abruptly with a heavy aircraft or
moving too fast can seriously damage the differential ring gear. This is considered abuse and is not
covered by the transaxle warranty. When moving an aircraft over the hangar door weather edge or
door rail, it’s recommended to have a little momentum and to smooth the transition. Hangar Ramps
can be purchased from Airtug.
SAVE THIS DOCUMENT AND ENSURE ALL OPERATORS READ IT PRIOR TO MOVING ANY AIRCRAFT
1
