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M1.1.BG25M-BG30M-BG50E-BG65ED-BG75E.NLFREN - 11062020
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S S p p a a r r k k P P l l u u g g S S e e r r v v i i c c e e
8�7 Spark plug service
In order to service the spark plug, you will need a spark plug wrench (commercially available).
In order to service the spark plug, you will need a spark plug wrench (commercially available).
R R e e c c o o m m m m e e n n d d e e d d s s p p a a r r k k p p l l u u g g s s : : F F 7 7 T T C C
Recommended spark plugs: F7TC
To ensure proper engine operation, the spark plug must be properly gapped and free of deposits.
If the engine has been running, the muffler will be very hot. Be careful not to touch the muffler.
To ensure proper engine operation, the spark plug must be properly gapped and free of deposits.
If the engine has been running, the muffler will be very hot. Be careful not to touch the muffler.
1. Remove the spark plug cap.
2. Clean any dirt from around the spark plug base.
1. Remove the spark plug cap.
3. Use a spark plug wrench to
2. Clean any dirt from around the spark plug base.
remove the spark plug.
3. Use a spark plug wrench to remove the spark plug.
4. Visually inspect the spark plug. Discard it if the insulator is
4. Visually inspect the spark plug.
cracked or chipped. Clean the spark plug with a wire brush if
Discard it if the insulator is cracked
it is to be reused.
or chipped. Clean the spark plug
5. Measure the plug gap with a feeler gauge. Correct as
necessary by carefully bending the side electrode.
with a wire brush if it is to be reused.
The gap should be: 0�70-0�80 mm (0�028-0�031
5. Measure the plug gap with a feeler gauge.
inch)
6. Check that the spark plug washer is in good condition, and
Correct as necessary by carefully bending the
thread the spark plug in by hand to prevent cross-threading.
side electrode.
7. After the spark plug is seated, tighten with a spark plug
wrench to compress the washer.
T T h h e e g g a a p p s s h h o o u u l l d d b b e e : : 0 0 . . 7 7 0 0 - - 0 0 . . 8 8 0 0 m m m m ( ( 0 0 . . 0 0 2 2 8 8 - - 0 0 . . 0 0 3 3 1 1 i i n n ) )
If installing a new spark plug, tighten 1/2 turn after the spark plug seats to compress the washer. If reinstalling a used spark
plug, tighten 1/8-1/4 turn after the spark plug seats to compress the washer.
CAUTION!
The spark plug must be securely tightened� An improperly tightened spark plug can become very
hot and could damage the engine�
Never use spark plug which have an improper heat range� Use only the recommended spark
plugs or equivalent.
Plug gap
2
47
M M A A I I N N T T E E N N A A N N C C E E
Spark plug wrench
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