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Ignition timing
Before attempting to adjust ignition timing, make sure the
contact breaker point gap is adjusted properly.
With
timing
light
(Service
Tester
SRHS00,
Tool
No.
071719990000).
1.
2:
3. Direct
the beam of light toward the index mark. The
Connect timing light to the system properly. Refer to the
instructions furnished by the manufacturer.
Start the engine and allow it to idle at 1,200 rpm.
engine is timed when the index mark aligns with "F"
mark.
To adjust ignition timing, loosen the locking screws at the
base plate and rotate the plate as necessary.
Rotating the base plate clockwise advances the ignition,
and rotating counterclockwise retards the ignition.
. Raise the speed of the engine to 4,000 rpm. Again direct
the beam
of light toward
the index mark. Timing is
correct
if the
index
mark
is anywhere
between
two
advance marks.
With test lamp
1. Connect one lead of the test lamp to the contact breaker
spring, and the other to the engine (ground).
2. Turn on both the main and ignition switches.
3. Slowly turn the generator in a counterclockwise direction
until the lamp is about to light. Timing is correct if the
mark "F" is lined up with the index mark.
4. When
adjustment is necessary, loosen the locking screw
and rotate the base plate as necessary.
3. CARBURETOR
Make adjustments with the engine warmed up.
12 Close the throttle and adjust the throttle stop screw to
have the engine run at an idle speed of 1,200 rpm.
Rotation
of the stop screw
in a clockwise
direction
increases the speed.
. Turn
the
air screw
in or out until the engine
runs
smoothly, or approximately 3/4 to 1 1/2 turns open.
. If necessary, turn in or out the throttle stop screw to have
the engine run at the specified idle speed.
Idle speed:
1,200 rpm
. THROTTLE GRIP PLAY
1. Check the free play of the throttle grip. It should be held
within 10°—15° of the grip rotation. Adjustment is made
by loosening the adjuster lock nut and turning the adjuster
in or out as necessary. Tighten the lock nut firmly to
secure the adjustment.
. Check the rotation of the throttle grip. Turn the handle-
bar all the way between two extremes to see if the throttle
cable is not twisting or rubbing against adjacent parts. The
cable should also be routed properly.
Repair or, if necessary, replace the cable with a new one.
Fig. 2-4
@ Generator rotor @ Index mark
@ "F" mark
@ Advance mark
Fig. 2~5
@ Base plate locking screw
@ Test lamp (6V-3W)
@® Base plate
:
Fig. 2—6
@® Throttle stop screw
@ Air screw
Fig. 2—7
@® Lock nut
@ Grip play adjuster
15
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