IDLE MIXTURE
1. Fully warm engine and ensure choke is fully open.
2. Air cleaner in place.
3. Set desired speed with the air screw.
4. Adjust the IMS on ONE side to get the maximum possible RPM.
Do not go rich beyond the maximum speed point.
5. If the above changed the idle speed more than 40 RPM, then readjust the speed.
6. Adjust the side OPPOSITE of that in Step 4 to get maximum RPM.
7. Reset the speed.
8. Carefully trim each IMS to again get the maximum idle RPM.
9. Go leaner just enough to get a 20 RPM drop in speed.
10. Reset the speed to the desired RPM.
11. This is a Lean-Best Idle Set. Setting richer than this will not
improve idle quality or performance, but could tend to foul plugs.

CHOKE ADJUSTMENT
To adjust the choke piston linkage (Figure 10) open the choke valve and insert a .026" wire, with a 90 degree bend 1/8" from the end, between the top of the slot in the choke piston
cylinder and the bottom of the slot in the piston. Hold the wire in position and close the choke valve by pressing on piston lever A until resistance is felt. The dimension C should be .100"
between the top edge of the choke valve and the air horn. To adjust, bend rod B.

To adjust the fast idle linkage (Figure 11) place the fast idle screw A between the two notches on the cam. Close the choke valve as far as possible without forcing it. The dimension C
should be 3/64" between the choke valve and the air horn. To adjust bend rod D.

Fast idle may be adjusted to manufacturers specifications (usually 1500 rpm) during normal choke cold operation. The fast idle screw A can be adjusted with engine off and throttle held
open to allow screw head access. Recheck fast idle speed after each adjustment.

The length of time during which the choke will stay closed is determined by the position of the choke cap. As the choke cap is turned clockwise the choke will stay closed longer. To properly
set the choke loosen the chock housing retaining screws then turn the choke cap to the leanest notch on the choke housing and run the engine until normal operating temperature is reached.
With the engine running, slowly turn the choke cap clockwise until the choke valve begins to close. Now turn the choke housing one notch counterclockwise (lean) and tighten the choke
housing retaining screws. Periodic readjustment of the choke will be required as the temperature changes throughout the year. It is recommended that you use the notches in the choke
housing as a reference, one notch clockwise for rich or one notch counterclockwise for lean. After each adjustment verify that the choke valve opens fully after the engine is warm.

Já nevim, já prostě nastavil bohatost tak, že jsem točil na jednu stranu a když poklesly otáčky se vrátil o půl až otáčku šroubu. Akorát si nepamatuju teď kterou :-) Myslim že jsem šel od chudý směrem k bohatý. Potom se to musí pár desítek km projet (normální jízdou) a podle barvy svíček přidat nebo ubrat půl otáčky.

Sytič jsem snad ani nijak nenastavoval, prostě za něj zatáhnu, zavře se škrtící klapka a funguje to. Jedině jsou na něm lehce vyšší volnoběžný otáčky.