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Hard starting 20HP Mercury
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<blockquote data-quote="onthewater102" data-source="post: 449259" data-attributes="member: 13702"><p>PM Sent in reply to your PM.</p><p></p><p>You should be able to prime the fuel line until the bulb is hard, then when you pull the enrichment knob out you should hear a squirt of fuel go into the carb. Push the knob back in then try to start it. Leaving it pulled out it will flood - it is not a choke.</p><p></p><p>The enrichment valve bypasses the jet and allows the pressure in the fuel line to introduce a small amount of fuel into passages that get to the carb throat.</p><p></p><p>If you have a knob on it do not pay it much mind, it changes the timing advance slightly - that's all and it's really not needed. Later models didn't have it.</p></blockquote><p></p>
[QUOTE="onthewater102, post: 449259, member: 13702"] PM Sent in reply to your PM. You should be able to prime the fuel line until the bulb is hard, then when you pull the enrichment knob out you should hear a squirt of fuel go into the carb. Push the knob back in then try to start it. Leaving it pulled out it will flood - it is not a choke. The enrichment valve bypasses the jet and allows the pressure in the fuel line to introduce a small amount of fuel into passages that get to the carb throat. If you have a knob on it do not pay it much mind, it changes the timing advance slightly - that's all and it's really not needed. Later models didn't have it. [/QUOTE]
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