MTD World Tiller - Series 240 Betreibershandbuch PDF herunterladen (Seite 16)

Remove the thumb screw and the air cleaner cover.

Remove the elements and separate them. See Fig. 10-2.

Replace paper element when dirty or damaged. Clean

foam element or replace when damaged.

Paper Element

Foam Element

Figure 10=2

2. To clean foam element, separate it from the paper element

and wash in liquid detergent and water. Allow to dry

thoroughly before using. Do not oil the foam element.

SparkPlugService

_ WARNING: DO NOT check for spark with spark

plug removed. DO NOT crank engine with spark

plug removed.

To ensure proper engine operation, the spark plug must be

properly gapped and free of deposits.

1. Remove the spark plug boot and use a spark plug wrench

to remove the plug. See Fig. 10-3.

Spark Plug

Figure 10=3

_ ARNING: If the engine has been running, the

muffler will be very hot. Be careful not to touch the

muffler.

2. Visually inspect the spark plug. Discard the spark plug

if there is apparent wear, or if the insulator is cracked or

chipped. Clean the spark plug with a wire brush if it is to be

reused.

Measure the plug gap with a feeler gauge. Correct as

necessary by bending side electrode. See Fig. 10-4. The gap

should be set to 0.030 in.

Electrode

_ 0.030 in.

Figure 10-4

Check that the spark plug washer is in good condition

and thread the spark plug in by hand to prevent cross-

threading.

After the spark plug is seated, tighten with a spark plug

wrench to compress the washer.

NOTE:When installing a new spark plug, tighten 1/2 turn

after the spark plug seats to compress the washer. When

reinstalling a used spark plug, tighten 1/8-1/4 turn after the

spark plug seats to compress the washer.

IMPORTANT:The spark plug must be securely tightened.

An improperly tightened spark plug can become very hot

and may damage the engine.

SECTION10-- ENGINE MAINTENANCE

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 27 28

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