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Old 26 May 2011, 13:08   #1
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Country: UK - England
Town: Fareham
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Posts: 31
Yamaha 4hp 4st Jet Clean

Hi Panel,

Engine will only run with choke out.

Have removed the large jet in the float chamber (was coated in brown gunk)

There is a smaller jet above this larger one.

Do I just unscrew it? Clean it and screw it back in?

Or is it at a preset depth? And need to measure it's position?

Any other tips?

The fuel in the remote tank is only 9 months old. Do I not use it?

Is it worth filtering it? Or use it in the car?

Thanks.
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Old 31 May 2011, 15:59   #2
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Country: UK - England
Town: Fareham
Length: no boat
Join Date: May 2009
Posts: 31
Quote:
Originally Posted by Ribbie View Post
Hi Panel,

Engine will only run with choke out.

Have removed the large jet in the float chamber (was coated in brown gunk)

There is a smaller jet above this larger one.

Do I just unscrew it? Clean it and screw it back in?

Or is it at a preset depth? And need to measure it's position?

Any other tips?

The fuel in the remote tank is only 9 months old. Do I not use it?

Is it worth filtering it? Or use it in the car?

Thanks.
Up Date 31/05.

Removed second jet, it was blocked, used carb cleaner and copper wire to clear it.

Now starts and runs fine.

What is this brown stuff in the fuel?
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