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spudulike

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Morten is correct, the L screw controls the idle and low - mid revs - make it a bit richer.

 

It is the H screw that ultimately controls flat out speed - on these older carbs, changing the L screw will affect the high speed running so set this once the low speed is good.

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Cheers guys will have a play tomorrow, spud do you have any pictures of a muffler mod on the 020/200t? Just a 13mm hole isn't it?

 

I use a 10mm - you run the risk of going through the wall of the muffler with a 13mm - it can be done but the 10mm is fine.

 

You need to look at the bottom of the muffler - there is a small semicircular section on the underside by the exit part of the muffler. You need to drill the hole in the side of the muffler that lines up with this - I usually centrepunch the side and dril a pilot hole and go up in 3mm increments.

 

If the side cover is in damn good nick, I often make the hole a little higher to avoid melting it -

all part of the service - make sure all the swarf is blown out - if you do it on the machine - rev the nuts off it for a few seconds:thumbup:

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I use a 10mm - you run the risk of going through the wall of the muffler with a 13mm - it can be done but the 10mm is fine.

 

You need to look at the bottom of the muffler - there is a small semicircular section on the underside by the exit part of the muffler. You need to drill the hole in the side of the muffler that lines up with this - I usually centrepunch the side and dril a pilot hole and go up in 3mm increments.

 

If the side cover is in damn good nick, I often make the hole a little higher to avoid melting it -

all part of the service - make sure all the swarf is blown out - if you do it on the machine - rev the nuts off it for a few seconds:thumbup:

 

Cheers spud, glad you mentioned the side cover...... its brand new haha

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