2019 Kawasaki KX85 Owner's Manual (Page 152 of 179)

2019 Kawasaki KX85 Owner's Manual
Posted on 29 Jan, 2019
Model: 2019 Kawasaki KX85
Pages: 179
File size: 3 MB

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TUNING 151
j
TUNING
Carburetor
Tuning a carburetor is not the mysterious science
many racers believe it t
o be. One only needs to
establish a basic k nowledge of the identification an d
function of carburetor components as well as how
they work together to d
o the job well.
Tem p e ratu re-an d altitude-related mixture
adjustment
Condition*
Mixture will be Adjustment
Cold Air
Leaner Richer
Warm Air Richer Leaner
Dry Air Leaner Richer
Low Altitude
Standard
None
High Altitude
(above 1 500 m
or 4 900 ft)
Richer Leaner
*: at constant atmospheric pressure and humidity
The main jet size should be increased or de-
creased by one to five sizes and the engine tested
until its power is maximum .
Symptoms of Improper Mixture
If your ma
chine exhibits one or several of the
symptoms listed below, it may need carburetor
tuning. Before attempting any changes, however,
make sure that everyth
ing else is in good shape
and properly tuned. Check the condition of the
spark plug, make sure the ignition timing is correct,
service the air clean
er element and decarbonize the
muffler.
If your machine has run properly on a certain track
in the past and then s
tarts running poorly with the
same carburetor settings, the problem is almost cer-
tain to be elsewhere; changing the carburetor set-
tings in such a case w
ould probably be a waste of
time.
Symptoms when the mixture is too rich
Poor acceleration
Misfire at low engi
ne speeds
Excessive smok e
Spark plug fouling
A "deep" exhaust noise
Symptoms when the mixture is too lean
Pinging or rattling
Erratic acceleration
Same as when running out of fuel
High engine temperature


General
Year 2019
Make Kawasaki
Model KX85
Language English
Pages 179
Filetype PDF (Download)
File size 3 MB

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