Zenoah BK3420FL-EZ - Manual (Page 22)

22
7. Maintenance
■ FUEL FILTER
When you mount or dismount the fuel filter, be careful
not to damage the rubber packing. A damaged rubber
packing or insufficient mounting of the fuel filter will
cause fuel to leak.
Check how heavily the fuel filter is clogged from the fueling
port of the fuel tank every 25 hours of use.
If the fuel filter is clogged with dust, empty the fuel tank, take
the fuel filter out, and clean it with a brush, etc.
If the clogging of the fuel filter cannot be removed or the fuel
filter is damaged, replace it with a new one.
Part No.: Z4551-85100
If the fuel filter is clogged, the engine rotation speed might
not increase, or rotation fluctuations might occur.
(1) Rubber packing (2) Fuel filter
■ SPARK PLUG
Do not touch the spark plug with bare hands
immediately after stopping the engine. The spark plug is
still so hot and might cause burns.
Take out the spark plug, check the electrodes, and if
contaminated, clean them with a wire brush, etc. every 25
hours of use.
When mounting the spark plug, screw the plug in with your
fingers, and then tighten it with the plug wrench supplied as
a standard accessory.
The spark gap should be adjusted to 0.6 to 0.7 mm.
[Tightening torque]
9.8 to 11.8 N-m (100 to 120 kgf-cm)
Designated spark plug
Champion : CJ-6Y
NGK : BPM7A
If you use the plug wrench to start tightening the spark plug,
the thread might become damaged.
IMPORTANT
WARNING
IMPORTANT
WARNING
MA4
MA5