Silk 700s mk2 38 mm mk2 carb.

[Eric Ratcliffe]

Hi,
technical question.
If pilot jet, is fitted in the body. two stroke.
Should its position in float bowl, four stroke, have a blanking plug.



Eric.

[gasman]

NO whichever is not used is left open

[hendred]

Agree with Gasman, no blanking plug in the pilot jet positions.  My pilot jet is in the float bowl (not the usual position for a 2 stroke according to Amal). It is easy to get the pilot and starting jets mixed up when they are both in the float bowl and have been removed together!

[HENDRED]

Eric,

Sorry to cause confusion about jets and blanking plugs in my previous response.  I had my carb. to pieces again today and I believe the following is correct:

If the jet is in the float bowl, the blank is in the body.

If the jet is in the body, the blank is in the float bowl.

I have just changed mine over from the float bowl to the body and the idle seems smoother.  Found the explanation why in Phil Irving's Two-Stroke Power Units; Their Design and Application.  A thoroughly good read on two design and tuning