Engine Spark Plug Check/Replacement (Lpg Version) - Nilfisk SW5500 Bedienungshandbuch

ENGLISH

ENGINE SPARK PLUG CHECK/REPLACEMENT (LPG version)

For the type of spark plug to be used, see Technical Data
chapter.
CAUTION!
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 (51) to "0".
3. Open the engine compartment hood (19) and fasten it with
the support rod (47).
4. Lift and remove the right side panel (31).
5. Disconnect the spark plug cap (A, Fig. 28) and remove dirt
around the spark plug (B).
6. Remove the spark plug with a suitable wrench (C).
7. Check the spark plug. Replace it if it is damaged, dirty, if
the sealing washer (D) 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 (E). 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.
CAUTION!
A loose spark plug can overheat and damage the
engine.
Do not overtighten, otherwise the threads in the
cylinder head can be damaged.
13. Install the cap on the spark plug.
38
All manuals and user guides at all-guides.com
INSTRUCTIONS FOR USE
SW5500, FLOORTEC R 985 - 1466472000
B
A
C
0,7 - 0,8 mm
D
Figure 28
E
P100929
03/2016