Electric System
EL-21
Trouble analysis
Trouble Cause Method
Both the speed
division and the
distance count-
ing division of
the speedometer
do not work
Flexible shaft core broken Replace
Odometer rotating shaft seized Replace the odometer
Square connector nut slackened Tighten again
Only the speed
division of the
speedometer does
not work
Needle deformed and seized with dial or glass Correct
Drive worm wheel and worm, and inductive plate
seized, broken, or dirtied
Replace or clean
The needle and
the accumulated
machine do not
run simulta-
neously
Drive gear or driven gear of the speedometer dam-
aged
Replace meter
Meter failed Replace meter
The deflection
indication of the
needle is too
high.
Speedometer flexible shaft deformed or radius
area bent
Correct the flexible shaft
Input shaft or gear worn Replace meter
The speedometer
indication is on
the low side
Transmission output shaft slipped
Tighten the flange fork under the rec-
ommended torque
The magnetic effect of the magnetic steel reduced Replace
Needle indica-
tion error
Hairspring deformed or deviate from the original
position
Move the hairspring to one side to
adjust the indication of the needle
Magnetic body cracked Replace meter
Dimension of tyre is wrong Replace and use the recommended tyre
Speed gear worn or damaged Replace meter
The needle
deflection
exceeds the dial
Grease on the magnet Clean out the grease
The speed needle
of the speedome-
ter works
unsteadily
Hairspring broken Replace meter
At the constance velocity of the vehicle when the
speed needle's indication unsteadily reaches to
3km/h, it is in trouble. Check the curvature of the
flexible shaft to see if it is too small.
Adjust
Flexible shaft core seized Clean and lubricate
Speedometer nee-
dle oscillates
severely
The axial clearance of the flexible shaft is too big
causes the flexible shaft and speedometer's rotat-
ing shaft sometimes engaged, sometimes sepa-
rated.
Replace shaft core
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