Cub Cadet Challenger MX 550 Camo Operation Manual - Page 19

Cleaning Primary Air Filter Element Open the air cleaner cover once a week under ordinary conditions - or daily when used in a dusty place - to get rid of large particles of dust and dirt. Note: Do not run the engine with filter element removed. 1. Remove the air filter access panel. 2. Remove the air filter cover (a) from the three air filter cover holders (b). See Figure 5-25. (b) (b) (a) (b) Figure 5-25 3. Remove the air filter element. See Figure 5-26. Note: Be sure to refit the air filter cover with the arrow (on the rear of air filter cover) upright. If the air filter cover is improperly fitted the evacuator valve will not function and dust will adhere to the air filter element. Cleaning the Air Intake Air Intake Screen 1. Remove the hood and locate the air intake. 2. Remove the rubber seal (b) around the front of the air intake (a) and remove the air intake screen (c). See Figure 5-28. (a) (b) (c) Figure 5-28 3. Rinse the air intake screen (c) with water and replace the air intake screen (c) and rubber seal (b). See Figure 5-28. Drain the Air Intake 1. Remove the nine Allen-head bolts (a) and washers (a) securing the middle skid plate to the bottom of the utility vehicle. See Figure 5-29. Check Fuel Line & Fuel Filter WARNING Be sure to stop the engine and remove the key. Check the fuel lines periodically. The fuel lines are subject to wear and old fuel may leak onto a running engine which may cause a fire. The fuel line connections should be checked annually or every 100 service hours whichever comes first. The fuel line is made of rubber and wears regardless of service period. Important: When the fuel line is disconnected for maintenance or repair, close both ends of the fuel line with a piece of clean cloth or paper to prevent dust and dirt from entering. Particular care must be taken not to allow dust and dirt into the fuel pump entrance. Even a small amount of dust or dirt cause premature wear and the malfunction of the fuel pump and injector components. 1. Park the vehicle on a flat surface and remove the engine access panel. There is a primary fuel filter on the gas tank and an in-line fuel filter between the gas tank and the engine. 2. If the fuel line and clamps are damaged or deteriorated, replace them. 3. There are two main lines (a) coming into the primary fuel filter (b) and one main line (c) exiting the primary fuel filter (b). See Figure 5-31. (c) (a) (a) (a) (a) (a) (b) (a) (a) Figure 5-26 4. Remove the inner filter (a) from the paper element (b). See Figure 5-27. (b) (a) (a) (a) 4. (a) (a) 5. Figure 5-29 2. Remove the drain and allow the water to run out. Then replace the drain and the middle skid plate. See Figure 5-29. Figure 5-31 Check the fuel filter if it is clogged by debris or contaminated with water, replace it. To remove the in-line fuel filter, use pliers to squeeze tabs on the clamps (b), then slide the clamps (b) away from the in-line fuel filter (a). Twist and pull the fuel lines off of the in-line fuel filter (a). See Figure 5-32. (a) (b) Figure 5-27 5. Clean the paper element with a soft brush or low pressure air. Be careful not to damage the paper pleats during cleaning. 6. Inspect the inner filter for deposits or damage. 7. If either filter are excessively dirty or damage replace filters as a set. 8. Re-install the primary air filter element. 9. Install the air filter case cover and be sure the crankcase breather hose is connected. (a) Figure 5-30 (b) Figure 5-32 6. Check the in-line filter (a) for debris and/or water contamination. Replace as necessary. Section 5 - Product Care 19