Engine Speed (With Throttle Lever Model) - Yamaha MZ250 Service Manual

1
a
PERIODIC MAINTENANCE
1
2-14
6. Install:
9 Cylinder head cover gasket
9 Cylinder head cover
Cylinder head cover bolt:
Refer to "TIGHTENING TORQUES"
in the Supplementary service
manual.
9 Breather hose
9 Spark plug
Spark plug:
Refer to "TIGHTENING TORQUES"
in the Supplementary service
manual.
9 Spark plug cap
ENGINE SPEED (WITH THROTTLE LEVER
MODEL)
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 High engine speed (with no load)
Out of specification → Adjust
High engine speed:
Refer to "SPECIFICATIONS" in
the Supplementary service
manual.
Measurement steps:
a. Move the throttle lever 1 to the high
engine speed position a.
b. Check the high engine speed.
CHK
ADJ