Idle Speed; Engine Oil - Yamaha XZ550RJ 1982 Service Manual

Idle speed

1. Start the engine, and warm it up for a few
minutes.
2. Set the engine idle speed to the specified
level by adjusting the throttle stop screw on
the rear cylinder carburetor. Turning the
throttle stop screw in (clockwise) increases
the engine speed; turning it out (counter-
clockwise) decreases the engine speed. Use
a tachometer for checking and adjusting the
engine speed.
Engine idle: 1,300 ± 50 r/min

Engine oil

Recommended oil
Use Yamalube 4-cycle oil or SAE 20W40 SE motor
oil if the temperature does not go below 5°C (40°F).
Use SAE 10W30SE motor oil if the temperature
does not go above 15°C (60° F).
Oil level measurement
1. Place the motorcycle on its center-stand.
Warm up the engine for several minutes.
NOTE:
Be sure the motorcycle is positioned straight up
when checking the oil level; a slight tilt toward the
side can produce false readings.
2. With the engine stopped, check the oil level
through the level window located at the
lower part of the left side crankcase cover.
NOTE:
Wait a few minutes until the oil level settles before
checking.
1. Level window 2. Maximum mark
3. The oil level should be between the maxi-
mum and minimum marks. If the level is
lower, add sufficient oil to raise it to the
proper level.
Oil change (without changing the filter)
1. Start the engine and stop after a few minutes
of warm-up.
2. Place an oil pan under the engine and re-
move the oil filler cap.
3. Remove the drain plug and drain the oil.
1. Engine drain plug
4. Reinstall the drain plug (make sure it is
tight).
Drain plug torque:
43 Nm (4.3 m-kg, 31.0 ft-lb)
3. Minimum mark
24