Toro Heater Tune Up Kit is a maintenance kit designed to help you keep your 100,000 and 150,000 BTU heaters running smoothly. The kit includes everything you need to replace the spark plug, fuel filter, input filter, output filter, filter gasket, and nozzle O-ring.
Replacing these parts regularly can help to improve the performance of your heater and extend its lifespan. The spark plug helps to ignite the fuel, the fuel filter removes impurities from the fuel, the input filter prevents debris from entering the heater, the output filter removes impurities from the air that is circulated by the heater, the filter gasket creates a seal between the filter and the heater, and the nozzle O-ring creates a seal between the nozzle and the adapter.
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7 MODEL NO. 53595 FORM NO. 3314-642 INSTALLATION я INSTRUCTIONS HEATER TUNE UP KIT \_ For 100,000 and 150,000 BTU Heaters Since this instruction sheet covers only a small portion of the information necessary to maintain and operate your heat- er, we suggest that you keep this material with your Operator's Manual so that both may be referred to for instructions conceming safe operation and proper maintenance procedures. The kit should contain the following items: Spark Plug Fuel Filter Input Filter Output Filter Filter Gasket Nozzle O-Ring WARNING To prevent personal injury, disconnect the heater before servicing. REPLACE SPARK PLUG 1. Remove top cover from heater. 2. Loosen set screw holding spark plug to bumer and remove spark plug (Fig. 1). 3. Check spark plug gap. The proper gap should be .060 (1.5 mm). Adjust gap if it is not correct (Fig. 2). Clean or replace spark plug if needed. SET SCREW LL) RED LINE ON PLUG > MARK ON BURNER / hes BURNER | NOZZLE ADAPTER Figure 1 4. When replacing the spark plug, note that it is marked on the side with a red line (Fig. 2). This line must LB 148564 be pointed toward the center of the nozzle adapter or aligned with the mark on the bumer casting (Fig. 1). MARK ON PLUG ois 7 A L .060 (1.5 mm) Figure 2 INSTALL NEW O-RING (Fig. 3) 1. To disassemble the nozzle, loosen the set screw holding the adapter to the bumer. Va HEX CAP NOZZLE TUBE - ST NE ORING ——— AIR LINE 4 FUEL LINE — ——— oRIFICE— Figure 3 2. Detach fuel and air lines from adapter. 3. Carefully pull nozzle and adapter from bumer. 4. Remove nozzle from adapter. Care should be used to avoid damaging the nozzle adapter. 5. Remove the O-ring seal from the nozzle stem. 6. Install new O-ring over nozzle tube. Be sure O-ring is properly se ted into groove. ©The TORO Company - 1991 TPS 7. Firmly screw the nozzle into the adapter. Do not overtighten as damage could occur. Reinstall the nozzle, making sure it is tight against the bumer casting. 8. Tighten the set screw and replace the air and fuel lines. Note: If nozzle is very dirty, use compressed air to re- move dirt by blowing in the reverse direction of normal air flow through the nozzle. INSTALL NEW FUEL FILTER (Fig. 4) 1. Remove insert cover. 2. Remove fuel filter and replace with a new one. 3. Be sure to install filter with the fuel flow as indicated in Figure 4. Tighten all connections securely. 4. Reinstall all top covers. FUEL FLOW INSTALL NEW INPUT AND OUTPUT FILTERS AND FILTER GASKET (Fig. 5) 1. Remove grille. 2. Remove filter cover from filter housing. 3. Remove the old filters and replace with new filters. 4. Install a new gasket. 5. Reassemble filter cover. Tighten all fasteners se- curely to prevent air leaks. 6. Reinstall grille. / FILTER HOUSING AIR INPUT FILTER GASKET FILTER COVER Nar HIOZE В PRESSURE ADJUSTING SCRE Figure 4 Figure 5 Po
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