Derbi Rambla 250 Manual page 35

Maintenance
Locking torques (N*m)
SPARK PLUG 12÷14 (8.9÷10.3 ftlb)
•
Check the gap between the electrodes
with a thickness feeler gauge.
•
The gap should be 0.7 - 0.8 mm; adjust
if necessary by carefully folding the
earth electrode.
•
Make sure the washer is in good con-
ditions. Once the washer is fitted, man-
ually screw the spark plug to avoid
damaging the thread.
•
Tighten to the prescribed torque using
the spanner supplied in the tool kit;
make the spark plug complete 1/2 a
turn to press the washer.
•
Refit the tube «1» of spark plug «2»
adequately so that it does not get de-
tached when exposed to engine vibra-
tion.
CAUTION
WHEN REPLACING A SPARK PLUG, CHECK THE PITCH
AND LENGTH OF THE THREAD. IF THE THREADED SEC-
TION IS TOO SHORT, CARBON DEPOSITS WILL BUILD UP
ON THE THREAD SEAT AND THUS THE ENGINE MAY GET
DAMAGED WHEN THE SUITABLE SPARK PLUG IS REFIT-
TED. USE SPARK PLUGS OF THE RECOMMENDED TYPE
ONLY. OTHERWISE, ENGINE LIFE AND PERFORMANCE
COULD BE COMPROMISED. CHECK THE GAP BETWEEN
THE ELECTRODES WITH A THICKNESS FEELER GAUGE
TO AVOID DAMAGING THE PLATINUM COATING.
CAUTION
TIGHTEN THE SPARK PLUG CORRECTLY, OTHERWISE
THE ENGINE MAY OVERHEAT AND GET IRRETRIEVABLE
DAMAGED.
CAUTION
MAKE SURE THE TUBE «1» ON THE SPARK PLUG «2» IS
CORRECTLY POSITIONED.
Hub oil
Ride a few kilometres until the regular working temperature is reached, then shut off the engine.
NOTE
USE RECOMMENDED OIL ONLY. REFER TO THE RECOMMENDED PRODUCTS TABLE.
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