John Deere Products & Services D100 User Manual download pdf (Page 38)

10. Install new lter assembly back onto air cleaner base.

11. Install air cleaner cover and tighten two knobs.

12. Lower hood.

Checking and Cleaning Emission Filter (If

Equipped)

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

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2. Inspect lter (A) for dirt and damage, wash or replace if required.

a. Remove cover (B) and remove emission lter (A) from under rear

of fender deck.

b. Wash foam lter in a solution of warm water and liquid detergent.

Do not use oil.

c. Rinse lter thoroughly. Squeeze out excess water in a dry cloth

until lter is completely dry.

If foam lter cannot be cleaned properly or is damaged, replace

with a new lter.

d. Install foam air lter and secure with cover.

Checking Spark Plug

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

2. Let engine cool.

3. Lift hood.

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Twin cylinder engine shown

4. Disconnect spark plug wire(s) (A), one on each side on V-twin

engines.

5. Remove spark plug(s).

6. Clean spark plug carefully with a wire brush.

7. Inspect spark plug for:

• Cracked porcelain.

• Pitted or damaged electrodes.

• Other wear or damage.

8. Replace spark plug as necessary.

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9. Check plug gap (B) with a wire feeler gauge. To change gap, move

the outer electrode.

Gap must meet specications.

Specication

Spark Plug — Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.030 in. (0.76 mm)

10. Install and tighten spark plugs to specications.

Specication

Spark Plug — Torque. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 lb-ft (20 N·m)

11. Connect spark plug wire(s) and lower hood.

Adjusting Carburetor

NOTE: Carburetor is calibrated by the engine manufacturer and is not

adjustable.

If engine is operated at altitudes above 1006 m (3,300 ft), some

carburetors may require a special high altitude main jet. See your

authorized dealer.

If engine is hard to start or runs rough, check the TROUBLESHOOTING

section of this manual.

Possible engine surging will occur at high throttle with transmission in “N”

neutral and mower engagement lever disengaged. This is a normal

condition due to the emission control system.

After performing the checks in the troubleshooting section and your

engine is still not performing correctly, contact your authorized dealer.

Replacing Fuel Filter

NOTE: Change lter when fuel is low.

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

2. Let engine cool.

3. Lift hood.

4. Handle fuel safely. (See Handling Fuel Safely in the SAFETY

section.)

5. Put a drain pan under fuel lter.

Service Engine

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John Deere Products & Services D100 User Manual Page 38

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