5.1 V
PS_Gb_01239_130717.doc 5.1
Adjusting idling speed: (nominal idling speed: 3,000 rpm)
If the engine stalls when idling:
Turn the idling speed screw Item ① clockwise until the tip begins to vibrate and then go a ¼ turn
backwards, so that the tip no longer vibrates when the engine is idling.
If the tip vibrates at idling speed:
Turn the idling speed screw Item ① anti-clockwise until the tip stops vibrating and then turn the screw
an extra ¼ turn in the same direction.
If the tip continues to vibrate after resetting, have your lightweight portable vibrator repaired by your specialist dealer.
5.1.7 Spark plug
Should the engine lack power, be difficult to start, or give problems when
idling; always check the state of the spark plug before anything else.
Proceed as follows to remove the spark plug:
➊ Disconnect the plug cap Item ③ and
remove any dirt from around the
spark-plug Item ④ (See Fig.2).
➋ Remove the spark plug Item ④ with a 5/8”
plug spanner.
➌ Check the plug. Replace it if damaged or
extremely dirty, if its sealing washer is in
poor condition or if its electrode is worn.
➍ Measure the gap between the electrodes
(See Fig.3). If necessary, correct the gap
by bending the side electrode. The gap
between the electrodes should be 0.6 /
0.7mm.
Always use spark plugs with suppressors
(See §2.3 “Technical Characteristics”).
Other spark plugs may damage the piston
and cylinder.
Proceed as follows to refit the spark plug:
➊ Screw in the plug.
➋ Replace the plug cap firmly in position (See Fig. 2).
A plug that is not screwed in sufficiently tightly may cause overheating and
possibly damage the engine. Over-tightening the plug may damage the
threads in the cylinder head.
5.1.8 Cleaning/replacing the air filter
A dirty filtration system may give rise to the following problems:
- Abnormal fuel consumption.
- Problems in starting up the engine.
- A drop in engine power.
- Premature engine wear.
Proceed as follows to clean or replace the air filter:
➊ Push in the locking tab, Item ⑤ and
remove the cover on the air filter, Item
⑦ (See Fig.4).
➋ Remove the air filter, Item ⑥, and then
clean or replace it depending on its
condition.
➌ Refit the air filter and then put the filter
cover back in place.
1
2
Fig.4
Fig.3
Fig.2
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