'78 70HP carb jets

MESS147415

Seaman
Joined
Jul 5, 2004
Messages
61
While i'm waiting for my manual, can anyone tell me how many jets i should be able to find and clean in each carb - so far ive only found one jet behind a sealed screw in the inlet to the carb. Are there any adjustments on these carbs? - everything appears fixed<br /><br />thanks steve
 

Hooty

Rear Admiral
Joined
Oct 2, 2001
Messages
4,496
Re: '78 70HP carb jets

It only has the one fixed orfice (high speed) and the adjustable low-speed needle valve.<br /><br />c/6<br />Hooty
 

MESS147415

Seaman
Joined
Jul 5, 2004
Messages
61
Re: '78 70HP carb jets

Thanks hooty, haver found a fixed jet but no adjustable needle valve - should this be obvious? steve
 

Hooty

Rear Admiral
Joined
Oct 2, 2001
Messages
4,496
Re: '78 70HP carb jets

It's right above the air inlet.<br /><br />
site1112.jpg
<br /><br />c/6<br />Hooty
 

MESS147415

Seaman
Joined
Jul 5, 2004
Messages
61
Re: '78 70HP carb jets

Have i found my problem? - found the blanking plug on 2 of 3 tickover jets were not properly tightened which i think would allow air entry and weak mix at tickover - problems were bad tickover and stalling when going into drive. Not had chance to try on water yet.
 
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