Cleaning Engine Shroud

CAUTION: Compressed air can cause debris to fly a long distance.

• Clear work area of bystanders.

• Wear eye protection when using compressed air for cleaning purposes.

• Reduce compressed air pressure to 210 kPa (30 psi).

IMPORTANT: An obstructed air intake screen can cause engine damage due to overheating. Keep air intake screens and other external surfaces of the engine, including cooling fins, clean at all times to allow adequate air intake.

For models Z435, and Z625, also clean fins on oil cooler.

CAUTION: Touching hot surfaces can burn skin. The engine, components, and fluids are hot if the engine has been running. Allow the engine to cool before servicing or working near the engine and components.


Model Z425

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

  2. Clean air intake screen and external engine surfaces (see Cleaning Air Intake Screen and Engine Fins in ENGINE Section).

  3. MXAL47081
    MXAL47081-UN-16APR13

    Locate rotating screen guard (A) at top of engine, and the two retaining tabs (B), embossed with a finger symbol. Remove screw at front of screen guard (if equipped).


  4. Push in on the two retaining tabs and lift off guard (A).

  5. Clean guard and flywheel cover of debris.

  6. IMPORTANT: Be careful to maintain position of fuel pump assembly (D), clips, (E) and fuel line. Also any other attached components when removing parts from side of engine.

    Remove bolts and engine shroud (C).

  7. Remove four bolts and rotating screen (F).

  8. MXAL47082
    MXAL47082-UN-16APR13

    Clean debris from:

    • Fan areas (G)
    • Cylinder head cooling fins (H)
    • Engine cooling fins
    • Area between engine and frame


  9. Install rotating screen with four bolts.

  10. IMPORTANT: Engine shroud must be assembled so that slots in shroud align with ridge in air intake and mating surfaces along sides of engine. Failure to assemble correctly will prevent the air filter from sealing and may cause engine damage.

    Install shroud with hardware.


Models Z435, and Z625

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

  2. Clean air intake screen and external engine surfaces (see Cleaning Air Intake Screen and Engine Fins in ENGINE Section).

  3. Remove air cleaner cover.

  4. GXT001680
    GXT001680-UN-16SEP14

    Loosen clean out port screws (A) until the cover can be removed.


  5. Remove port covers (B).

  6. GXT001681
    GXT001681-UN-27OCT14

    Clean debris from clean out ports (C) on either side of air cleaner.


  7. Install port covers.

  8. Secure with screws that were previously loosened.

  9. Install air cleaner cover.

  10. GXT001684
    GXT001684-UN-17SEP14

    Clean fins on oil cooler (D) as needed.



Models Z445, Z465, Z645, Z655, and Z665

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

  2. Clean air intake screen and external engine surfaces (see Cleaning Air Intake Screen and Engine Fins in ENGINE Section).

  3. MXT005355
    MXT005355-UN-31JUL13

    Loosen two knobs and remove air cleaner cover (A) and air filter.


  4. MXT005379
    MXT005379-UN-31JUL13

    Remove three rivets (B) by prying them up using a screwdriver under the head until it pops up.


  5. Remove the rotating screen guard (C).

  6. IMPORTANT: Be careful to maintain position of fuel pump assembly (D), clips for fuel line, and any other attached components when removing parts from side of engine.

    Remove two screws holding fuel pump (D) to side of engine.

  7. Remove bolts, the rotating screen, (F) and engine shroud (E).

  8. MXT005356
    MXT005356-UN-31JUL13

    Clean debris from:

    • Fan areas (G)
    • Cylinder head cooling fins (H)
    • Area between engine and frame


  9. IMPORTANT: Engine shroud must be assembled so that the slots in the shroud align with ridge in air intake and mating surfaces along sides of engine. Failure to assemble correctly will prevent the air filter from sealing and may cause engine damage.

    Install shroud, fuel pump, rotating screen and any other components removed earlier.

  10. Install rotating screen guard with three rivets. Rivets can be reinstalled by pushing them into the fastened position.

  11. Install air filter and air cleaner cover.

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