Yanmar 6CXM-GTE, Руководство по обслуживанию

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3.11.17 Automatic timer
(1) Feature
The automatic timer controls the fuel injection timing
automatically through the centrifugal force of its rota-
tion.
The automatic timer adjusts the advancing angle auto-
matically as follows: - When the speed is increased, the
fly weight expands outward from the fly weight holder
under centrifugal force.
The roller installed on the fly weight moves outward
along the guide cam while compressing the timer
spring. Because the guide cam is connected directly to
the camshaft, the camshaft rotates only as far as the
timer spring has been compressed, and injection timing
is advanced.