Yamaha EF7000 Service Manual page 105

3. Ignition spark gap
9 Disconnect the spark plug cap 1 from
the spark plug.
9 Connect the ignition checker 2 as
shown.
3
Spark plug cap 1 → Ignition checker 2
Ignition checker lead → Spark plug 3
9 Turn the crankshaft and measure the
ignition spark gap a.
Minimum spark gap:
6.0 mm (0.236 in)
MEETS
SPECIFICATION
The ignition system is good.
a
2
1
OUT OF
SPECIFICATION OR
NO SPARK
IGNITION SYSTEM
5-30
ELEC