Yamaha EF7000 - ADJUSTING THE ENGINE SPEED

2-15
CHK
ADJ
PERIODIC MAINTENANCE
1
1
a b
ADJUSTING THE ENGINE SPEED
(Except for EF7000/EF7200)
1. Warm up the engine for a few minutes.
2. Attach:
9 Digital tachometer 1
Digital tachometer:
YU-39951-B, 90890-06760
3. Measure:
9 Economy control engine speed and
engine speed (with no load)
Out of specification → Adjust
Economy control engine speed
(with no load):
2300–2400 r/min
Engine speed (with no load):
3110–3210 r/min
4. Adjust:
9 Economy control engine speed
Adjustment steps:
a. Turn the economy control switch 1 to “I”
(ON).
b. Turn the adjusting screw to obtain the
proper engine speed.
9 Engine speed
Adjustment steps:
a. Turn the economy control switch 1 to
“3” (OFF).
b. Turn the adjusting screw to obtain the
proper engine speed.
Turn to a
The engine speed decreases.
Turn to b
The engine speed increases.