KNOVA KN GEN-30 Manual page 12

MAINTENANCE
• Clean the fuel valve lever sediment cup
Fuel valve
1. Close the fuel valve and remove the sediment bowl.
Take out the O-type seal ring and strainer.
2. Clean the sediment bowl, O-type seal ring and strainer
with incombustible or high-flash solvent.
3. Reinstall the O-type seal ring and strainer, and tighten
the sediment bowl.
4. Open the fuel valve and inspect for leakage.
• Clean the spark plug
Recommended spark plug models F7RTC and F7TC
Spark plug
wrench
Sediment
cup
Fuel
filter
O-ring
Sediment
cup
Spark plug
cap
1. Remove the spark plug cap.
2. Clean the spark plug base.
3. Remove the spark plug with the spark plug socket spanner.
4. Open Inspect the spark plug insulator visually for
damage. If it is damaged, replace a new one.
5. Measure the spark plug gap with a fap gauge.
Twist the side electrode to adjust the gap.
The gap should be kept between 0.70 and 0.80 mm.
6. Inspect if the washer of the spark plug
is in good condition.
7. Reinstall the spark plug and tighten it with the spark plug
socket spanner. Press down the washer of the spark plug
and place the spark plug cap.
• Valve clearance
(should be conducted by a professional person)
Feeler
gauge
Remove the cylinder head cover and measure the valve
clearance with the feeler gauge. The clearances are 0.1 mm
for the inlet valve and 0.15 mm for the outlet valve.
10,000-DC, 10,000D-DC: The clearances are 0.07 mm for
the inlet valve and 0.10 mm for the outlet valve.
11
0.70-0.80 mm