VORTEX FACTORY: Via E. Fermi, 5 – 27040 Campospinoso (PV)– ITALY – Tel. +39 0385 765200
VORTEX FACTORY: Via E. Fermi, 5 – 27040 Campospinoso (PV)– ITALY – Tel. +39 0385 765200
OTK KART GROUP srl
Via dei Soprini, 16 – 25080 PREVALLE (Brescia) ITALY-‐Tel. +39 030 6804601 – Fax +39 030 6804698
Rev. 30/09/15
assembly will cause the loss of the intake
silencer.
Changing main jet:
1.
Take the intake silencer off the carburettor by
unscrewing the clamp. It is
not
necessary to
unscrew the bracket. The intake silencer will
turn easily.
2.
Disconnect the throttle cable from the
carburetor together with its spring and slide it.
3.
Took the carburetor off the engine and open
the float chamber (22) by unscrewing the four
screws (23). Clean the parts, openings and
passages with compressed air.
4.
Unscrew the main jet (4) by using a cross
screwdriver. Place a new one. Be careful,
washer (18) has only one position. Wrong
assembling will cause totally black out of
carburettor.
5.
Check the float chamber gasket (21) and
eventually change it if damaged.
6.
Close the float chamber by screwing the four
screws (23) and re-‐place the carburettor in the
engine.
7.
Clean the inside of the intake silencer.
8.
Attach the intake silencer assembly to the
adaptor.
9.
Tighten it with the specific clamp. Wrong
assembly will cause the loss of the intake
silencer.
5.7. Spark Plug
Cleaning:
Oils produce carbon deposits or residues that
make necessary the spark plug to be checked
and cleaned, at least every 5 hours.
Unplug the spark plug and clean it by using a
metal brush.
Setting Plug Gap:
Use a specific spark plug gap gauge to set up
correct gap. Correct gap: 0,8 mm.
