5 ) Remove the flywheel without turning crankshaft at all.
6)Loosen the lock screw of the breaker point support plateso that the breaker point canbe rotated.
7)By rotating the support plate of the breaker point, find the exact point when the buzzer within timing tester starts ringing from being silent. (See Figs. 43 and 44.)
8) Put the flywheel back and check by rotating flywheel slowly. If the buzzer in timing tester starts ring- ing when line mark on the flywheel is in the line with line mark on the crankcase.When the line marks are in alignment, the timingis correct.
9)If the timing mark lines are not in alignment, then readjust the point opening accordingto the BREAK-
ER POINT ADJUSTMENT,by removing the flywheel and repeat the checking procedure3) through 5 ) .
10)After completing the timing adjustment remount the blower housing and connect the coil primary lead to the stop switch.
6 - 4 MAGNETOTROUBLESHOOTING
When the engine does not start or starts with difficulty, or when its operationisunstable, the following tests will clarify if they are caused by a defectin the magneto.
1)Check igntion cable for possible corrosion, broken, worn insulator or loose connection.
2)Check the sparkingas described later in this section.
3)Check if thebreakerpointsrequire cleaning, or adjustingornot.Ifthepoints are badlycorrodedor pitted, condenser mayhave to be replaced too.
Refer to “BREAKER POINT ADJUSTMENT.”
4)If no spark takes place, replace ignitioncoil.
“SPARK TESTING
Remove spark plug from cylinder head and place it on blower housing, with the ignition cable connected to it.
Crank the engine serveral times by starting pulley and observe the sparkin the spark gap of spark plug. If the spark is strong, the ignition systemcan be eliminated as the source of trouble.
if the spark is weak or there is no spark at all, repeat the checks accordingto the procedures 1) through
3)above.-
The correct electrode gap is 0.6 0.7 mm. (Refer to section ”13. CHECKS and CORRECTIONS.”)
6-5 SOLIDSTATE IGNITION
Thefollowing solid stateignitionsystemsare available as optional part of EY 15V; and to EY20Vengine these systems are equipped as standard parts.
T.I.C. (TRANSISTORIGNITIONCIRCUIT)
On the outsideof the flywheel, an ignitioncoil is installed, which is
,
,-
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