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20/25hp carb number difference
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<blockquote data-quote="onthewater102" data-source="post: 421378" data-attributes="member: 13702"><p>I did the conversion already on my motor - Mercury tech support was where I found the factory timing settings are different between the 20hp and 25hp models, I did need to adjust mine to get the 25hp setup to idle smoothly, but I think my motor had other gremlins that happened to get ironed out at the same time as the swap. </p><p></p><p>These carbs are so simple that unless there were bore differences in the port from the jet to the throat there really isn't much else for there to be different besides the throat. Easy enough to test with a small drill bit if you're so inclined.</p></blockquote><p></p>
[QUOTE="onthewater102, post: 421378, member: 13702"] I did the conversion already on my motor - Mercury tech support was where I found the factory timing settings are different between the 20hp and 25hp models, I did need to adjust mine to get the 25hp setup to idle smoothly, but I think my motor had other gremlins that happened to get ironed out at the same time as the swap. These carbs are so simple that unless there were bore differences in the port from the jet to the throat there really isn't much else for there to be different besides the throat. Easy enough to test with a small drill bit if you're so inclined. [/QUOTE]
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