Etesia mvehh evoloution carb help

[J.D]

Afternoon folks, i have recently purchased the above machine and all seems as it should, however the carb is giving me some problems.

 

The mixture seems very rich, plugs are fouled excessively, fuel lasts no time at all and the exhaust fumes are black.

 

So, I have had the air filter off and cleaned it, new fuel filter and then I tried to adjust the carb, I turned the idle screw in until it stopped, then back a turn and a half. Then I tried to adjust the screw on the bottom end (bowl) but it was tight in against the stop. On loosening the screw say half a turn petrol started leaking from the area around the screw.

 

So, I have screwed that back in and need advice as to what to do next ?

 

New part perhaps, or am I mistaken in thinking that this screw adjusts the mixture etc ?

 

As for the idle screw, I have it backed off as far as possible but the engine speed is only coming down to 2000 rpm, is this a cable or linkage problem, or is it perhaps something more serious ?

 

 

Cheers in advance

 

J.D

[Jonesie]

If its a Briggs engine the screw at the bottom is to remove the carb bowl so you don't need to touch that. You have done the right thing with the slow running idle adjuster screw(screw in till it starts to cut out and back off 1/2 a turn).

If when its on tick over and it's still running to fast check that the cable going to the linkage has not been caught and pulled it back, reset the cable and then adjust the throttle stop screw. (make sure you do this before you try to adjust the idle adjuster)

 

Hope this is of help. I know what I mean but it might sound a bit vague.

[J.D]

If its a Briggs engine the screw at the bottom is to remove the carb bowl so you don't need to touch that. You have done the right thing with the slow running idle adjuster screw(screw in till it starts to cut out and back off 1/2 a turn).

If when its on tick over and it's still running to fast check that the cable going to the linkage has not been caught and pulled it back, reset the cable and then adjust the throttle stop screw. (make sure you do this before you try to adjust the idle adjuster)

 

Hope this is of help. I know what I mean but it might sound a bit vague.

 

Cheers Jonesie, that makes things a bit clearer mate.

 

 

How do i adjust the mixture then

 

 

I'ts the 18hp V Twin engine on board if that makes a difference ?

 

 

 

PS, I got the equipment I rang up about the other day mate,

 

Thanks very much

[Jonesie]

It should have fixed jets on it so you don't need to adjust the carb. Just make sure the air filters are clean and it should run fine. If you was a bit closer I'd take a look for you.

If I think of anything else I'll let you know.

[J.D]

It should have fixed jets on it so you don't need to adjust the carb. Just make sure the air filters are clean and it should run fine. If you was a bit closer I'd take a look for you.

If I think of anything else I'll let you know.

 

 

Cheers Jonesie.

 

 

I wonder if the carb could do with a strip down and clean ( something sticking maybe ) that being the case then, It's a right thirsty bugger. I've never had anything this greedy.

 

J.D

[J.D]

Bump, any more thoughts guys ?

[david]

is it still running rough?

 

or is it the amount of petrol its using? (roughly how much per hour)

[J.D]

is it still running rough?

 

or is it the amount of petrol its using? (roughly how much per hour)

 

It's not running to bad, but it seems to be using 4 or 5 litres per hour at a guess mate, we have had other slightly smaller engined machines that didnt use any where near the same amount.

 

J.D

[ukminch]

To be honest that doesn't seem that high, it's amazing how much fuel they do use if you've moved up to a bigger machine. I think I use about 8-10 litres (the tank size) every couple of hours in both my machines.

 

R

[J.D]

Oh right, well I will put some fuel treatment through the tank, make sure all the linkages are moving freely etc and see if that brings any improvement in usage.