n ne ste
et ol
97
e
e an al
Engine Spark Plug Check/Replacement
)RUWKHW\SHRIVSDUNSOXJWREHXVHGVHH7HFKQLFDO
Data chapter.
Warning!
A wrong spark plug can
damage the engine.
1. Drive the machine on a level ground and engage
the parking brake.
2. Turn the ignition key to “0”.
3. Open the engine compartment hood with the
handle and fasten it with the support rod.
4. Lift and disassemble the right side bulkhead.
5. Disconnect the spark plug cap and remove dirt
around the spark plug.
6. Remove the spark plug with a proper wrench
(A).
7. Check the spark plug. Replace it if it is
GDPDJHGGLUW\LIWKHVHDOLQJZDVKHU%LV
damaged or if the electrode is worn.
8. Measure the distance between the spark plug
electrodes with a feeler gauge. Correct the
distance by bending carefully the side electrode
(C). The distance between the electrodes must be
of 0.70 - 0.80 mm.
9.
,QVWDOOWKHVSDUNSOXJPDQXDOO\ZLWKJUHDWFDUH
to avoid tightening it improperly.
10.
2QFHWKHVSDUNSOXJLVLQSODFHWLJKWHQLWZLWKD
proper wrench to press the sealing washer.
11.
:KHQDQHZVSDUNSOXJLVLQVWDOOHGWLJKWHQ
turn once the spark plug is in place to press the
washer.
12.
:KHQWKHRULJLQDOVSDUNSOXJLVUHLQVWDOOHG
tighten 1/8 - 1/4 turn once the spark plug is in
place to press the washer.
1RWH
$ORRVHVSDUNSOXJFDQRYHUKHDW
DQGGDPDJHWKHHQJLQH'R
QRWRYHUWLJKWHQRWKHUZLVHWKH
WKUHDGVLQWKHF\OLQGHUKHDG
FDQEHGDPDJHG
13. Perform steps 4 and 3 in the reverse order.
0.70 - 0.80mm
A
P200135
Summary of Contents for SW4000
Page 233: ......
