XY400–2 Maintenance Manual
Inspection and adjustment
30
Fine adjustment:
Pull open the rubber lagging, unscrew the
retaining nut A, and turn the adjusting solenoid to adjust
to a satisfied free stroke. And then screw up the
retaining nut A and mount the protective rubber lagging.
Coarse adjustment:
If the fine adjustment is not satisfying, separate
the throttle control line with throttle valve body and
unscrew the retaining nut B to make adjust the free
stroke in a larger range. Screw up the retaining but B
after the adjustment.
Check whether the throttle can turn smoothly from
full open to full close at any position. If there is clogging,
adjust or replace it.
Use not full throttle to the free stroke motorcycle is
a dangerous operation, rotating the handle, not full
throttle to the free stroke can make the engine
speed increases suddenly.
9. Brake
system
Check the front brake handle free stroke.
The brake handle free stroke 10-20mm.
Brake fluid level inspection:
Check the brake fluid level in the front brake cylinder: if
the level is too low but not emptied, directly refill brake
fluid (DOT 3 brake fluid).
If the brake fluid inside the cylinder is found cloudy,
impure or smelt, Drain and refill the brake fluid. Refer to
the brake fluid vacuum filling method in the next section.
I If the brake fluid in both the front cylinders is drained,
bleed air from the deflating valve of the brake caliper
with a vacuum pump, and then refill brake fluid into the
cylinder.
The fluid level in the pump reservoir may never drop
below the minimum notch (LOWER) (1) visible on the
port (2) on the rear of the pump body
Brake fluid vacuum filling method:
This method is only applicable to refilling brake fluid for
new vehicles or when the brake fluid in the cylinder is
drained.
WARNING:
Min. scale line
