ENGINE
3-11
8. Connect:
● Spark plug
● Spark plug cap
EAS20700
CHECKING THE IGNITION TIMING
NOTE:
Prior to checking the ignition timing, check the
wiring connections of the entire ignition system.
Make sure all connections are tight and free of
corrosion.
1. Remove:
● Timing plate cover
2. Connect:
● Timing light “1”
● Digital tachometer
(to cylinder #1 high tension cord)
3. Check:
● Ignition timing
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Start the engine, warm it up for several min-
utes, and then let it run at the specified en-
gine idling speed.
b. Check the firing range as shown.
Incorrect firing range → Check the ignition
system.
NOTE:
The ignition timing is not adjustable.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
4. Remove:
● Timing light
● Digital tachometer
5. Install:
● Timing plate cover
EAS20710
MEASURING THE COMPRESSION
PRESSURE
The following procedure applies to all of the cyl-
inders.
NOTE:
Insufficient compression pressure will result in a
loss of performance.
1. Measure:
● Valve clearance
Out of specification → Adjust.
Refer to “ADJUSTING THE VALVE CLEAR-
ANCE” on page 3-4.
2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Disconnect:
● Spark plug cap
4. Remove:
● Spark plug
CAUTION:
ECA13340
Before removing the spark plugs, use com-
pressed air to blow away any dirt accumulat-
ed in the spark plug wells to prevent it from
falling into the cylinders.
5. Install:
● Compression gauge “1”
● Adapter “2”
Timing light
90890-03141
Inductive clamp timing light
YU-03141
Digital tachometer
90890-06760
YU-39951-B
Engine idling speed
970–1170 r/min
1
To Next Page
Loading...
Need help?
General
