Funbikes QD03K Owner's Manual page 18

● SPARK PLUG
Keeping the spark plug in good condition will reduce fuel consumption and increase engine
performance.
To perform the check, simply slide off the electrical connection tube and unscrew the spark
plug.Examine the distance between the electrodes with a feeler. This distance should be from
0.5 to 0.6 mm. If it is not, it may be corrected by bending the earth electrode.
Check as well that there are on cracks in the insulation or corroded electrodes. If so, replace
immediately.
When replacing the spark plug, screw it in by hand until it stops, then tighten with a wrench.
● BRAKES
 Adjusting the Brake
The mini quad is with 2 front brake and 1 rear brake.
WARNING: The brake is capable of causing the electric mini quad to skid the tire throwing an
unsuspecting rider. Practice in an open area free from obstacles until you are familiar with the
brake function. Avoid skidding to a stop as this can cause you to lose control or damage the
rear tire.
Check
To check the wear of front and rear brake pads A,
simply inspect the brakes calipers as shown in the
figure.
The thickness of the lining on the ends of the four
pads should never be less than 1mm.
Should the lining be thinner, immediately replace the
brake pads.
We recommend having the brake
replaced by an authorized dealer
pads