Gilera Nordwest, Workshop Manual

Page: 33 / 136

AIR FILTER
After the saddle removal, untighten the filter box cover screws.
Remove the air filter from the filter box.
Using a cloth, clean the filter box internal side.
Clean the air filter by immersing it in kerosene.
Wring out the filter, assuring that you don’t twist it.
Using clean water, rinse out the filter and then let it dry completely.
Saturate the filter with “BEL RAY MC6-FOAMFILTER OIL (or exceptionally,
with gearbox oil SAE 90).
Spread a thin coating of grease on filter lips leaning on filter box and fit it op-
erating in the reverse order of disassembly.
SPARK PLUG
Disconnect the spark plug protection and remove it.
Check carefully the protection and, if the insulating material is cracked or bro-
ken, replace it.
Using a feeler gauge, measure the electrodes gap, and in case, adjust by
bending the external electrode.
Electrode gap: 0.6 ÷ 0.7 mm
Suitable spark plug
Champion RA4HC
Assure that the sealing washer is not damaged.
Fit the spark plug by hand and then tighten it to the appropriate torque.
Connect the protection to the spark plug.
DECOMPRESSION SYSTEM
After the timing left side cover removal, check the decrompressor control
transmission.
The (D) lever (fig. 62) must be separate from the pin (C) not more than 1.5 mm.
The sheath (E) (fig. 61) in its housing must be free of play; in case act on
adjusting nut (F).
3 - 6