After the trasnporting the motor, before starting the engine and at regular intervals, is recommended to check your paramotor for possible damages.

The parts frequently at risk are: the propeller, the frame and the guarding net

The  frame can be buckled following bad packaging and transporting, in such a case you can easily see that the distance between the prop's edge and the frame differs from point to point when turning it (do this with the engine off and by slowly hand turning the propeller). When the engine is on, because of vibrations, the propeller may "touches" the frame which can result  in a permanent damage such as a breakage ; in case of a light damage, you can try to solve the problem by hand pulling the frame to its original shape; for big repairing go to a workshop, or replace the frame with a new one.

T he strings of the guarding net must be checked because in case of breakage they may be caught by the propeller and cause a mess. those frayed must be immediately replaced.

The nylon net can be mended, by hand sewing with thick polyester yarn weaving two or three times in order to reach the original thickness .

The parts to be replaced must be removed by cutting them with a hot tool (a soldering will be all right) in order to melt the tip to avoid fraying .

nodo.gif (3361 byte)Periodically, you must also checks the knots and verify the tension of the net, in order to avoid slackening.


The tension of the net is set by the tensioning cable that is controlled by adjusting of the knots, as specified in the chapter  assembling .


T o avoid fraying :
all the knots of the Kevlar strings (easy recognizable because of the inner yellow fiber), must be fixed by 1/2 drops of cyanic-acrylic glue on their tips. After few seconds, cut them in the hardened portion.


Warning.gif (151 byte) Exclaim.gif (1443 byte) Before starting the engine, always check for parts that may take off while the engine is on 


Possibile cause Solution
Cold starting mixture too rich or too poor

follow the procedures

go to "engine starting "

go to "carburetion "

air bubbles in the circuit

charge the circuit before starting the engine , go to "engine starting "

power failure to the spark

remove it and check

hot starting

mixture too poor

go to "carburetion "

after switching off when the engine is still hot

vapour look

 wait few minutes or use a colder spark

different troubles

 low battery or failure un the electric circuit 

go to power failure

different troubles  with float type carburetor

 the gas from the float chamber spread on the sump

go to "engine starting "

different troubles with diaphragm carburetor

after a long resting the carburetor is "dried "

go to "engine starting "

UNEVEN POWER (high revs. power loss ) AND UNSTEADY IDLING
in case these troubles show simultaneously
carburetion lean because of gas shortage carburetion go to "carburetion "
air suction in the fuel circuit  replace pipes, filters and joints
obstructions in the fuel flow 
  • replace the gas filter
  • clean the inner filter in the carbutetor
  • clean the needle jets and fu e l ways inside the carburetor

go to  carburetor maintenance

the carburetor doesn't provide enough fuel
  • clean the intake pressure hole
  • the carburetor gasket is broken or badly mounted
  • replace the diaphragms *

go to carburetor maintenance

* must be done when fuel swiftly goes back to the fuel tank when switching off the engine
carburetion lean due to an excess of air carburetion go to "carburetion "
fuel suction through the sump or its gaskets
  • check and waterproof by suitable products all the junctions and gaskets
  • r eplace the crankshaft gaskets
  carbur etion too rich go to "carburetion "
  • too much oil in the mixture

  • unsuitable oil


spark plug electrodes distance 

0,5 mm (tool supplied )

distance coil / fly-wheel

0,3 ; 0,5 mm

 short circuit on the switch off circuit

check thermostat (if any), the switch off button, the coil electric wire to the terminal 


to the speed-reducer

oil lack  check the oil level

bearings or gears damaged


to the muffler

mountings or muffler manifold

fix or replace the mountings

muffler ineffectual

replace glass wool


muffler disconnectet


to the propeller

 damaged by foreign bodies

fix or replace

before taking off again check the engine bolts and nuts


Just after starting

Air bubbles in fuel circuit

Accelerate the engine slightly to draw the bubbles through

Upon acceleraring, the engine wants to die

Mixture too Lean

Richen (open) the adjuster

During idling, the engine dies

Mixture too lean

Richen (open) the adjuster

Engine misses a few beats occassionally

Air bubbles or fuel-vapour bubbles in line

Check for leaks, re-route fuel pipe away from vibrating parts

Difficult to get full power

Leaks on engine gaskets allowing air to enter

Replace all engine gaskets

Sporadic power surges and losses

Spark Plug too old

Replace with new spark plug


Problems with Chassis
Difficult to insert (or remove) Radial Rods in Plastic fittings Tip Surface scratched Polish tips with 600 grit sandpaper
Anti-Vibration Rubber-Mount Isolators fail prematurely Propellor Imbalance causing destructive vibration Re-balance or replace propellor

Spark Plug: Set the Spark Plug gap to between 0.5mm and 0.6mm
Replace the Spark Plug every 12 hours flying

Never fly with a damaged propellor!

The forces within a spinning propeller are huge and a damaged propeller might disintegrate without warning, with potentially disastrous consequences. The fragments become high-velocity shrapnel and could do serious damage to property or injury to people.

An unbalanced propeller causes destructive vibrations which could cause serious damage to welds on your chassis and to other components.