Timing Adjustment - Robin EC05-2 Service Manual

With the Model EC05-2,07:2, 10, 17 and 25-2 engines, the spark is timed t o occur 18"
-
23" before the position reaches
TDC on
the compression stroke.
This
spark advance of 18"
-
23" is
controlled by the breaker point opening and this ad-
vance is obtained when the breaker point opening is adjusted according to the BREAKER POINT ADJUSTMENT to its
proper point opening. However, the advance timing
is
more accurately adjusted through the following procedures using a
timing light as shown in Fig. 7-3-3.
NOTE: Spark advance
of
each model is as follows:
EC05, EC07-2, EC25-2 23"
EClO : 1 8
EC17
.-
2 2 "
NOTE: Refer to section "4-1 I IGNITION. "and "12. CHECKSand CORRECTIONS."
7-3-1 ALIGNMENT MARK for TIMING ADJUSTMENT (See Fig. 7-3-1.)
For timing adjustment, the following alignment marks are provided as
shown on Fig. 7-3-1.
*Line mark on crankcase
*Line mark on flywheel circumference and cooling fan
7-3-2 DEFERENCE
among
MAGNETO for D TYPE, V TYPE and B TYPE (See Fig. 7-3-2.)
D type and V type: Clockwise arrow
is
embossed on cooling fan.
B type: Counter-clockwise arrow is embossed on cooling fan.
TIMING M A R K S
Fig. 7-3- 7
-
30
-
Fig. 7-3-2