Yamaha XV1600A1999, Service Manual

Page: 14 / 460

1-4
FEATURES
GEN
INFO
Operation
1. When the starter switch is pushed, electricity
is run to the decompression solenoid 1
causing it to push out the decompression so-
lenoid rod
2 .
2. When the decompression solenoid rod is
pushed out, the decompression connector
3 moves the decompression levers 4 in the
direction indicated by the arrows, and then
the levers push the decompression rods
5
toward the camshaft side.
3. The decompression cam 6 is pushed in the
direction indicated by the arrow, and then the
pin
7 raises the projection of the decom-
pression cam.
4. When the camshaft is rotated by the selftim-
ing motor, the exhaust valve lifters 8 are
lifted by the pin just before top dead center
(TDC) and the exhaust valve push rod
9 and
valve rocker arms are operated. Thus, open-
ing the exhaust valve becomes easy.
5. When the engine starts and reaches a spe-
cific engine speed the decompression sole-
noid is turned off and the decompression
system stops operating.