MVC,

Here is some information from the parts list and manuals area.

Optional top springs for LM carburettor:

CR03417A 150g-I.5N Red

CRO 3643A 200 g-2.0 N Yellow

CRO 3594 250 g-2.5 N Natural

CRO 3638 300 g-3,0 N Green

Vortex and turbo blade disc models which are governed to 2700-3250 rpm have a restrictor installed in the governor vacuum line where it is attached to end cap.

This restrictor reduces the engine speed approximately 150 rpm. In addition to the rest restrictor, the poppet valve in these carburettors must be set with the letter A facing the spray hole. Refer to heading Adjustable Poppet Valve if necessary.

The final engine speed adjustment is pre-set in
factory to ensure that the engine noise level does not exceed The decibel reading requirement. During normal service it is not necessary to change the colour coded spring. cheers2

Regards,
[Linked Image]

Bruce


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