MAINTENANCE
OPERATOR’S MANUAL PRESSURE WASHER
14
Fuel Pressure Adjustment:
To adjust fuel pressure, turn the adjusting screw clock- wise to increase, counterclockwise to decrease. Do not exceed 200 psi. NOTE: When changing the fuel pump, a bypass plug must be installed in the return port or the fuel pump will not prime.
Removal of Soot and Heating Coil:
In the heating process, fuel residue in the form of soot deposits may develop on the heating coil and block air flow which will affect burner combustion. When soot has been detected on visual observation, the soot on the coil must be washed off after following the coil removal steps.
1.Remove the tank head assembly by lifting the tank head off.
2.Remove the two pipe nipples and associated fit- tings.
3.Lift the coil out of the outer wrap.
CAUTION:The coil weighs about 80 lbs. Use proper lifting techniques.
4.Clean, repair and replace the coil by reversing the above steps.
Coil Reinstallation:
Reinstall by reversing the above steps 4 through 1.
Final Note:
The 12 VDC burner systems can draw as much as 18 amps! For such burners to run properly, the battery and engine charging system must be kept in good condition. The engine must run at the correct RPM to adequately charge the battery. It is equally important not to throttle down the engine on models without batteries, since all power to run the burner comes solely from the engine. Do not throttle down the engine at anytime while the machine is operating.