Every 3,000 Km; Checking The Spark Advance - PIAGGIO MSS X9 EVOLUTION 250 Workshop Manual

MSS X9 Evolution 250
Secondary air filter (external/internal) - cleaning (125)
10'
Engine oil - level check/ top-up
Carburettor
- Disassemble the carburettor in its parts, wash all of them with solvent, dry all body grooves with
compressed air to ensure adequate cleaning.
- Check carefully that the parts are in good condition.
- The throttle valve should move freely in the chamber. Replace it in case of excessive clearance due
to wear.
- If there are wear marks in the chamber causing inadequate tightness or a free valve slide (even if it
is new), replace the carburettor.
- It is advisable to replace the gaskets at every refit
WARNING
PETROL IS HIGHLY EXPLOSIVE ALWAYS REPLACE THE GASKETS TO AVOID PETROL LEAKS

Checking the spark advance

- To check the ignition advance, use the strobo-
scopic lamp with induction collet connected to the
spark plug power supply cable.
- Connect the induction collet according to the right
polarity (the arrow on the collet must be facing the
spark plug).
- Set the lamp selector to the central position (1
spark = 1 driving shaft revolution as in 2 stroke
engines).
- Start the engine and check that the lamp is in
good working order and that the rpm counter reads
high speeds too (e.g. 8,000 rpm).
- If you detect abnormal flashes or rpm reads, in-
crease the resistive load on the spark plug supply
line (10 - 15 KΩ in series with the H.V. cable).
- Remove the slit plastic cap on the flywheel cover.
- Adjust the lamp flash dephasing corrector to
make the reference on the flywheel cover collimate
with the level on the water pump drive. Read the
Action

EVERY 3,000 KM

Action
Maintenance
MAIN - 35