Instruction manual

45 | Page

ADJUSTING THE FUEL NEEDLE

The engine must be running in order to adjust the Fuel Needle. If the engine will

not run and the fuel needle is set between 1/2 and 3/4 turn out (open), the Fuel

Needle setting is not likely to be the problem.

If the engine will not run and the Fuel Needle is not set between 1/2 -3/4 turn out,

set the Needle to this setting. The machine should start in this range.

1. Once the machine is running proceed as follows:

With Fuel Oil or Flushing solution in the Formulation Tank, move the machine

where it can safely be used to fog for a brief period.

2. Install the #72 flow control orifice (or if equipped, set the Formulation Metering

Valve to "10") and start the machine.

CAUTION

If the machine is running too lean or too rich, the next step may cause the engine

to stop and a small amount of flame may exit the engine discharge.

NOTE

A pulse-jet-engine that has a LEAN fuel:air mixture will not carry fog and the

engine will want to stop running. A pulse-jet-engine that is set RICH will run

rough or sputter frequently.