24Figure 4.5 — 14, 17 & 20kWEngine Air CleanerCoverFilterScrew4.5.2 10KW GENERATORSSee "The Generator" section for the location of the air cleaner. Usethe following procedure (Figure 4.6):1. Lift the roof and remove the door.2. Turn the worm gear clamp screw counterclockwise to loosen.3. Pull the old filter off the divider panel hub.4. Wipe away dust or debris from the panel hub.5. Install the new air cleaner onto the hub.6. Turn the worm gear clamp screw clockwise to tighten.7. Replace door and roof.Figure 4.6 — 10kW Engine Air CleanerAir Filter4.5.3 8KW GENERATORSee "The Generator" section to locate the air box. Use the followingprocedures to replace the dirty air filter within the air box (Figure4.7).1. Lift the roof and remove the door.2. Push back on the latch of the yellow air filter access door toswing open.3. Pull out the old air filter and discard appropriately.4. Install the new filter, open end first into the air box.5. Swing the yellow door shut and snap to close.6. Replace door and close roof securely.Figure 4.7 — 8kW Engine Air Cleaner LocationAir CleanerCover4.6 SPARK PLUG(S)Reset the spark plug(s) gap or replace the spark plug(s) as neces-sary. See the Service Schedule section for maintenance require-ments.1. Clean the area around the base of the spark plug(s) to keepdirt and debris out of the engine.2. Remove the spark plug(s) and check the condition. Replacethe spark plug(s) if worn or if reuse is questionable. See theService Schedule section for recommended inspection. Cleanby scraping or washing using a wire brush and commercialsolvent. Do not blast the spark plug(s) to clean.3. Check the spark plug gap using a wire feeler gauge. Adjust thegap to 0.030 inch (0.76 mm) for 8, 10 and 20kW; and 0.040inch (1.02 mm) for 13, 14, 16 and 17kW by carefully bendingthe ground electrode (Figure 4.8).Figure 4.8 – Setting the Spark Plug GapMaintenance