Honda HHB25 Owner's Manual page 48

NOTE:
We recommend that you use a ball-pointed hex. wrench for smooth
adjustment of the throttle cable guide.
3. Tighten the flange bolt securely.
4. After adjusting the throttle cable, start the engine and check that the
throttle lever functions properly. The handy blower should turn at
high speed when the throttle lever is squeezed, and it should turn at
low speed when the lever is released.
5. If adjustment cannot be made properly, consult your authorized
Honda dealer.
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