Desa B50G Owner's Manual

Contents

Desa B50G Owner's Manual Manual pdf 10 page image

10102016ReliefValvePressureGaugePlugContinuedPump PressureAdjustment1. Remove pressure gauge plug fromfilter end cover.2. Install accessory pressure gauge(part number HA1180).3. Start heater (see Operation, page6). Allow motor to reach full speed.4. Adjust pressure. Turn relief valveto right to increase pressure. Turnrelief valve to left to decreasepressure. Set pump pressure at 3.4psi.5. Remove pressure gauge. Replacepressure gauge plug in filter endcover.Spark Plug1. Remove upper shell (see page 9).2. Remove fan (see page 9).3. Remove fuel and air line hosesfrom nozzle assembly.4. Remove spark plug wire fromspark plug.5. Remove two screws using 5/16"nut-driver and remove burnerstrap.6. Place hex-body of spark plug intovise and tighten.7. Remove spark plug mounting nutusing 11/16" open-end wrench.8. Remove burner strap from sparkplug.9. Clean and regap spark plugelectrodes to .055" gap.10.Replace burner strap onto sparkplug. Rotate burner strap toposition spark plug electrodes (seeFigure 12, page 11).11.Tighten spark plug with spark plugmounting nut.12.Release hex-body of spark plugfrom vise.Fuel Filter1. Remove side cover screws using5/16" nut-driver.2. Remove side cover.3. Pull upper fuel line off fuel filterneck.4. Carefully pry bushing and fuelfilter out of fuel tank.5. Wash fuel filter with clean fuel andreplace in tank.6. Attach upper fuel line to fuel filterneck.7. Replace side cover.Figure 7 - Pressure Gauge Plug Removal PressureGaugeFigure 8 - Adjusting Pump PressureBend Hereto AdjustGap.055" GapFigure 11 - Spark Plug GapFigure 10 - Spark Plug RemovalAir LineHoseBurnerStrap Spark PlugWireNozzle AssemblyFuel Line HoseSparkPlugSpark PlugMounting NutCombustionChamberFuel FilterSideCoverUpper Fuel LineFigure 9 - Fuel Filter Removal