Joyner JNSZ1100SV Owner's Manual page 42

New and used coolant can be hazardous.
Children and pets may be harmed by new or used coolant.
Continuous or brief contact with coolant may be dangerous for your health.
Keep new and used coolant away from the children and pets. To minimize
your exposure to new and used coolant, wear a long sleeve shirt and
moisture-proof gloves (such as dishwashing gloves) when you change coolant.
If coolant contacts your skin, wash thoroughly with soap and water. Wash any
clothing or rags if wet with coolant. Recycle or properly dispose of used coolant.
Harm or damage may occur if use coolant that don't meet the specification
50% standard green coolant and 50% distill water
6. Idle Speed
Adjustment
Never make unnecessary adjustments. The factory recommended settings are correct
for most applications. It's not necessary to disassemble the screw unless the idle speed
needs to adjustment. (See Fig. 43)
Warm up the engine (5~10min)
6.1. Connect the tachometer; adjust the
throttle to limit the idle speed. The
standard value is (800-900RPM).
6.2. Adjust the screw and adjust the idle
speed to an ideal value.
6.3. Repeat step 6.2 until the RPM of engine
stables.
FIGURE 43