Checking and Cleaning Air Cleaner Element

Models Z525E, Z535M, Z535R, Z540M and Z540R

1. Park machine safely. (See Parking Safely in the SAFETY section.)

2. Let engine cool.

3. 
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   Model Z525E

   
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   Models Z535M and Z535R

   
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   Models Z540M and Z540R

   Clean dirt and debris from the air cleaner cover (A).

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4. Loosen two knobs (B) and remove cover.

5. IMPORTANT: To prevent engine damage, do not allow any foreign objects to fall into the carburetor air intake.

   NOTE: During filter cartridge removal, any material or foreign object that enters the air intake must be removed before replacement of the cartridge.

   
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   Model Z525E

   
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   Models Z535M and Z535R

   
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   Models Z540M and Z540R

   Lift out filter cartridge (C) and inspect it for damage.

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6. IMPORTANT: Dirt and debris can enter the engine through a damaged filter element:

   • Do not wash paper element.

   • Do not attempt to clean paper element by tapping against another object.

   • Do not use pressurized air to clean element.

   • Replace element only if it is dirty, damaged or the seal is cracked.

   Inspect the foam precleaner (D) (If Equipped) without removing it. If the foam precleaner is dirty:

   1. Remove it from the filter carefully.

   2. Wash precleaner in a solution of warm water and liquid detergent.

   3. NOTE: Do not put engine oil on pre cleaner. Engine oil may wick into the paper filter element and result in poor engine performance.

      Rinse precleaner thoroughly. Squeeze out excess water in a dry cloth until pre cleaner is dry.

   4. Replace the precleaner if damaged or missing.

7. Inspect paper filter element. Replace the filter element if damaged or dirty.

8. Clean air cleaner base carefully. Prevent any dirt from falling into carburetor or air intake tube.

9. Install foam precleaner (D) mesh side up on paper filter element. Position air filter in air filter base:

   • Model Z525E install cartridge. Make sure that cartridge and seal are properly seated and sealing the carburetor air intake area.
   • Models Z535M, Z535R, Z540M and Z540R, install also on air intake tube (E). Align air filter clamp on intake tube groove and tighten clamp by turning thumbscrew clockwise until secure.
   
   

10. Install air cleaner cover and tighten knobs. Do not overtighten.