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INDEPENDENT AUTHORIZED KODIAK SERVICE
CENTER FOR ROTAX® AIRCRAFT ENGINES
Recommended Jetting for Rotax Engines
It is recommended that the jetting be checked when installing a new engine in a new aircraft. Use this chart for referencing the jetting required.
The jetting chart is for sea level setting. If you are located 1,000 feet or more above sea level refer to the Main Jet Conversion Chart.
Lower section jetting is selected for the engine to provide an overlap in jetting giving you smoother acceleration. If jetting is leaned out through the ranges it will cause poor acceleration, high EGT readings and a stumbling of throttle response.
|
| Engine |
Main
Jet |
Idler
Jet |
Needle
Jet |
Jet
Needle |
Position |
Air Screw
Turns Out |
| 277 SCA |
148 |
45 |
2.72 |
8L2 |
2 |
1 |
| 277 SCB |
140 |
45 |
2.72 |
8L2 |
2 |
1 |
| 377 SCA |
165 |
45 |
2.70 |
8O2 |
2 |
.5 |
| 377 SCB |
155 |
45 |
2.70 |
8O2 |
2 |
.5 |
| 377 DCA |
135 |
50 |
2.62 |
8H1 |
2 |
.5 |
| 447 SCA |
165 |
45 |
2.70 |
15K2 |
2 |
.5 |
| 447 SCB |
155 |
45 |
2.70 |
15K2 |
2 |
.5 |
| 447 DCA |
135 |
50 |
2.70* |
6G1 |
3 |
1 |
| 503 SCA* |
180 |
45 |
2.74 |
8G2 |
3 |
.5 |
| 503 SCB* |
158 |
45 |
2.74 |
6H2 |
3 |
.5 |
| 503 SCA** |
185 |
45 |
2.72 |
15K2 |
3 |
.5 |
| 503 SCB** |
165 |
45 |
2.70 |
15K2 |
3 |
.5 |
| 503 DCA |
158 |
45 |
2.70 |
11K2 |
2 |
.5 |
| 503 DCC |
148 |
45 |
2.68 |
11K2 |
2 |
1 |
| 532 SCA |
195 |
55 |
2.74 |
15K2 |
3 |
1 |
| 532 SCB |
170 |
55 |
2.74 |
15K2 |
3 |
1 |
| 532/582 DCA |
165 |
55 |
2.72 |
11G2 |
3 |
1 |
| 532/582 DCC |
145 |
55 |
2.68 |
15K2 |
3 |
1 |
| 618 DCA PTO |
160 |
50 |
2.68 |
DN9M10J |
2 |
1.5 |
| 618 DCA MAG |
170 |
50 |
2.68 |
DN9M10J |
2 |
1.5 |
| 618 DCC PTO |
135 |
50 |
2.68 |
DN9M10J |
2 |
1 |
| 618 DCC MAG |
145 |
50 |
2.68 |
DN9M10J |
2 |
1 |
*Up to serial number 503 engine model 3785371 - 503 SC
** From serial number 3785372 - 503 SC |
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Rotax aircraft engines, Kodiak Research Ltd.
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