Nilfisk-Advance SW4000 Service Manual

Engine System - Petrol 97Service Manual – SW4000
Engine Spark Plug Check/Replacement
For the type of spark plug to be used, see Technical
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
damaged, dirty, if the sealing washer (B) is
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. Install the spark plug manually with great care,
to avoid tightening it improperly.
10. Once the spark plug is in place, tighten it with a
proper wrench to press the sealing washer.
11. When a new spark plug is installed, tighten 1/2
turn once the spark plug is in place to press the
washer.
12. When the original spark plug is reinstalled,
tighten 1/8 - 1/4 turn once the spark plug is in
place to press the washer.
Note: Aloosesparkplugcanoverheat
anddamagetheengine.Do
notovertighten,otherwisethe
threadsinthecylinderhead
canbedamaged.
13. Perform steps 4 and 3 in the reverse order.
0.70 - 0.80mm
A
B
C
P200135

Nilfisk-Advance SW4000 Specifications

General

Brand	Nilfisk-Advance
Model	SW4000
Category	Floor Machine
Language	English