FUEL SYSTEM/CARBURETION
4.5
/ pilot screw adjustments and PVT adjustments may
be required to suit operating conditions.
CARBURETOR JETTING
CAUTION:
A main jet that is too small will cause a lean
operating condition resulting in serious engine
damage. Select the correct main jet carefully for
elevation and temperature according to the
charts Chapter 1 specifications or in the Owner’s
Safety and Maintenance Manual for each
particular model.
IMPORTANT: The following guidelines must be
followed when establishing a main jet setting:
1. Select the lowest anticipated temperature at
which the machine will be operated.
2. Determine the lowest approximate altitude at
which the machine will be operated.
3. Select the correct mainjet from thechart on page
1.4.
4. Clutching changes may also be required for
changes in elevation. Refer to clutching chart on
page 1.4 for recommendations.
MIKUNI JET PART NUMBERS
Main Jets
Jet Number Part Number
112.5 3130554
115 3130555
117.5 3130556
120 3130557
122.5 3130558
125 3130559
127.5 3130560
130 3130561
132.5 3130562
135 3130563
137.5 3130564
140 3130527
142.5 3130566
145 3130567
147.5 3130568
150 3130569
152.5 3130570
155 3130571
157.5 3130572
160 3131141
162.5 3131142
165 3131143
167.5 3131144
170 3131145
Jet Number Part Number
40.0 3130624
42.5 3130526
Pilot Jets
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