Spark Plug - Cembre RDS-20P Operation And Maintenance Manual

• Paper Filter (P) (spare part code: 6003911)
– Remove the insert, take the fi lter out and shake or clean it carefully
with compressed air from the inside out, to remove the dust.
– Reassemble correctly.
NOTE: the paper fi lter must not be washed!
Depending on usage, the fi lter will have to be periodically
replaced with a new one.
A damaged air fi lter must be replaced immediately.
8.2) Fuel fi lter
(spare part code: 6003922)
A reduction in fuel fl ow towards the carburettor indicates that the fi lter is clogged up.
The fuel fi lter is located in the fuel tank and if it is clogged up, it must be replaced with a new
one as it cannot be cleaned.
Avoid dirt getting into the fuel tank during fi lter replacements.
Replace the fuel fi lter at least once a year.

8.3) Spark plug

(spare part code: 6003752)
Deposits on the spark plug's electrode can cause malfunctions or engine start-up problems. This
can be due to:
– A mix of fuel that contains too much oil.
– A dirty air fi lter.
– A carburettor that is not regulated properly.
To clean the spark plug:
– Remove the uppermost engine cover by unscrewing the two side screws.
– Disconnect the coil and unscrew the spark plug with the wrench supplied.
– Clean off all the deposits on the electrode using a wire brush, taking care
not to damage the ceramic support.
– Check, and if necessary, adjust the distance of the electrodes to 0,5 mm.
– Screw the spark plug back in, reconnect the lead and remount the cover.
– If a replacement is needed, use CHAMPION RCJ6Y, NGK BPMR7A or equivalent.
An unsuitable spark plug can damage the cylinder or the piston.
Replace the spark plug after about a month of work, or more often if necessary.
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