KTM 990 - Manual (Page 55)

Checking rear brake fluid level
The brake fluid reservoir for the rear disk brake is combined with the foot brake cylinder and
has an inspection window. The brake fluid level should not drop below the "MIN" mark when
the motorcycle is in a vertical position.
– If the brake fluid level drops below the minimum either the brake system has a leak or
the brake pads are completely worn down. In this case, consult an authorized KTM dealer
immediately.
– Have the brake fluid changed at an authorized KTM workshop every 2 years.
MAINTENANCE WORK ON CHASSIS AND ENGINE
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54
Checking the rear brake pads
The brake pads can be inspected from the rear. The thickness of the linings may not be less
than 1 mm (0.04 in).
At their most worn point brake pad linings should not be thinner than 1 mm, otherwise they
could lead to brake failure. For your own safety don’t put off having your brake pads changed.
If the brake pads are replaced too late so that the lining is partly or entirely worn away, the
steel components of the brake pad will rub against the brake disc, imparing the braking
effect and destroying the brake disc.
min.
1 mm