Chapter 12: Setup & Maintenance
Parts & Service
on non-motor hardware improvements
Winterizing your Paramotor by Alex Varv
This decompressor is no longer used because of problems
but, if you find a motor with it still installed...
use vacuum from the motor to create a hole in the cylinder so that the
motor is easier to pull through compression. It must remain open for easy
starting and stay closed afterward for proper running.
decompressor is stuck open (motor not firing):
- It may be contaminated. They get a little oil in them and it can
congeal. Remove the decompressor and clean with gasoline.
- The vacuum line may be blocked or have a hole in it.
The most common
reason for not getting a spark is a bad plug. They can look fine but be
broken internally. They're cheap and easy to replace so start there. Other
- Connector Primer bulbs are common culprits. Consider removing the
bulb from the system and joining the fuel line with a simple nipple to
see if that cures it.
- Fuel line cracks. These can be impossible to see. Usually they show
up where the fuel line goes into a nipple or around a bend or gets
chafed (rubbed enough to cut into the material).
- Vent: The gas tank must vented to allow air in as fuel is
burned. Otherwise a vacuum forms that eventually prevents free fuel
flow. Unscrew the cap and blow into the vent line. If you cannot blow
into then either a one-way valve has malfunctioned (if installed) or
there is something blocking it. Replace the vent line and/or one-way
- Fuel Line: Make sure there's gas in the tank, disconnect the
fuel line from the carb and blow into (or pressurize somehow) the vent
line. Fuel should push up and out of the fuel line's end. If it does
not, the filter (if installed) may be plugged or the fuel line may
kinked or pinched.
Black Devil Decompressor
unit is difficult because of the close cooling fins that prevent getting a
socket around the main part. Do NOT
- Bullet1: Bullet text.
- Bullet2: More bullet text