KEEWAY ATV250, Service And Maintenance Manual

Page: 72 / 97

68
Test of timming ignition
1.Remove the cap of ignition inspection.
2.Join the stroboscope according to the instruction of
the manufacturer.
3.Start the engine and aim the stroboscope to the ignition mark on the
flywheel of the magneto.
•Course of slow down:
“F”ignition mark snaps the “V” mark on the stroboscope’s inspective hole.
At 1700RPM, ignite at the pocht 15°fortvard the up-stop-point(watch the rev)
•Course of speeding up:
“II”high speed mark snaps the“V”mark on the stroboscope’s inspective hole,
at 4000RPM
，
ignite at the point 28°forward the up-stop-point, if the equipment
works unormal, replace it and check again.