Considerations For Various Riding Conditions; Carburetor - Dinli DL-801 Service Manual

APPENDIX

Considerations for Various Riding Conditions

This vehicle has been designed and manufactured to
operate under a wide range of riding conditions. However, it
is not feasible to anticipate all of the conditions under which
this vehicle might be used. Extremes of temperature, altitude,
and riding usage may make changing some carburetor parts pr
the spark plug desirable to maintain the vehicle in peak
operating condition.

Carburetor:

Some an alteration may be desirable for good performance
under different riding conditions when proper mixture is not
obtained after the carburetor has been adjusted, and all parts
cleaned and found to be functioning properly.
If the engine still exhibits symptoms of overly rich or lean
carburetion after all maintenance and adjustments are
correctly performed, the main jet can be replaced with a
smaller or larger one. A smaller numbered jet gives a leaner
mixture and a larger numbered jet a richer mixture.
Carburetor Pilot Screw Adjustment:
Note:
Pilot screw is covered by a welsh plug. Plug removal will be
required to perform these procedures.
● Start engine and warm it up to operating temperature
(about 10 minutes).
● With engine off, turn pilot screw in (clockwise) until
lightly seated.
Note:
Do not tighten the pilot screw forcefully against the seat or the
screw and/or seat will be permanently damaged.
● Connect an accurate tachometer that will read in
increments of + or – 50 RPM. Start engine.
● Set idle speed to 1600 RPM.
Note:
Always heck throttle cable freeplay after adjusting idle speed
and adjust if necessary.
● Slowly turn mixture screw clockwise using the pilot screw
wrench until engine begins to miss.
● Slowly turn mixture screw counterclockwise until idle
speed increases to maximum RPM. Continue turning
counterclockwise until idle RPM begins to drop.
● Center the pilot screw between the points in Step 5 and 6.
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