Yamaha EH63 - Fittings and Fasteners

PERIODIC MAINTENANCE
2-18
1
2
3
4
5
6
7
8
9
10
PERIODIC CHECKS AND ADJUSTMENTS
7. Adjust:
• Low engine speed
Adjustment steps:
a. Start the engine.
b. Check that the governor arm “1” is not pulled by
the spring “2”.
c. Move the carburetor’s throttle stop screw “3” in
the direction “a” or “b” until the low engine speed
reaches 1900–2100 r/min with no load on the
engine.
FITTINGS AND FASTENERS
1. Check:
• All fittings and fasteners
Loose  Tighten.
Rough movement  Replace the defective part(s).
Damage/pitting  Replace.
1
2
3
a
b
Direction “a”
Low engine speed is increased.
Direction “b”
Low engine speed is decreased.