Bleeding The Brake System - Yamaha MM700A Manual

3. Remove the brake disc (B, Figure 29).
4. If necessary, remove the drive key (Figure 30) from
the jackshaft.
NOTE
Measure brake disc thickness where the
pads contact the disc, not at the edge ofthe
disc.
5. Measure the thickness of the brake disc. Replace the
brake disc if the thickness is less than 9.5 mm (0.374 in.)
or the disc is damaged.
outer surface of the collar rides against the seal in the
chaincase. Replace the collar if excessively worn or dam-
aged.
7. Inspect the key, keyway in the jackshaft and key notch
in the brake disc. Replace any component that is exces-
sively worn or damaged.
8. Inspect the washer (Figure 32) and snap ring on the
9. Reverse the removal steps to install the brake disc. In-
stall the brake disc so the wide side of the hub is inboard.

BLEEDING THE BRAKE SYSTEM

This procedure is necessary only when the brake feels
spongy, there is a leak in the hydraulic system, a compo-
nent has been replaced or the brake fluid has been re-
placed.
clear hose to each bleeder valve on the caliper. Place the
other end of each hose into a clean container. Fill the con-
tainer with enough fresh brake fluid to keep the hose ends
submerged. The hoses should be long enough so a loop
can be made higher than the bleeder valve to prevent air
from being drawn into the caliper during bleeding.
CA UTION
Cover the snowmobile with a heavy cloth or
plastic tarp to protect it from accidental
ter and rinse completely.
2. Clean the top of the master cylinder of all dirt and de-
bris. Remove the cover and diaphragm (Figure 34). Fill
the reservoir to about 1/4-5/16 in. (6.4-7.9 mm) from the
top. Reinstall the diaphragm to prevent the entry of dirt
and moisture.
WARNING
Use brake fluid from a sealed container
marked DOT 4 only (specified for disc
fluid