SWM RS 300 R 2019 Manuel - Utilisation - Entretien page 99

ADJUSTING THE MANUAL DECOMPRESSOR CABLE
TENSION
In order to adjust the lever (1) decompressor free
play (approximately 3 mm- 0.12 in.), the lever holder
is provided with the adjuster (2); the adjustment
can be also effected with the tightener (3) on the
R.H. side of the engine (use this tightener if it is not
possible to obtain the correct free play with the ad-
juster on the handlebar).
2
SPARK PLUG CHECK
Spark plug (2) gap shall be 0.028 in.
A wider gap may cause difficulties in starting the
engine and overload the coil.
A gap that is too narrow may cause difficulties
when accelerating, when idling or poor performance
at low speed.
Clean the scale away from the base of the spark
plug before removing it from the cylinder, after re-
moving the cap (1).
It is very useful to examine the state of the spark
plug just after it has been removed from the engine
since the scale deposits on the plug and the colour
of the insulator provide useful indications.
1
Correct heat rating:
The tip of the insulator should be dry and the colour
should be light brown or grey.
3
High heat rating:
In this case, the insulator tip is dry and covered with
dark deposits.
Low heat rating:
In this case, the spark plug has overheated and in-
sulator tip is vitrified (glazed), white or grey in col-
our.
WARNING*: If the spark plug is replaced, use
one with the same rating.
1
0,7 ÷ 0,8 mm
2
EN - 27