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20/25hp carb number difference
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<blockquote data-quote="onthewater102" data-source="post: 421331" data-attributes="member: 13702"><p>Different casting for the bigger bore. Take your S/N and a S/N off a 25hp and look up the component parts & you'll see they have different sized jets & several other differences...the 25hp carbs are cheaper to find rebuild kits for too...</p><p></p><p>BTW you need to synch your motor and adjust your timing advance after swapping the 20hp for 25hp carb. Other than that you're good to go.</p><p></p><p>Perform these procedures (starting in the lower right corner of the 1st page section 6-15) only in a test tank or on the water, never with muffs on the motor.</p><p></p><p><img src="https://i.imgur.com/5uuunQnh.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="https://i.imgur.com/luexWmkh.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="onthewater102, post: 421331, member: 13702"] Different casting for the bigger bore. Take your S/N and a S/N off a 25hp and look up the component parts & you'll see they have different sized jets & several other differences...the 25hp carbs are cheaper to find rebuild kits for too... BTW you need to synch your motor and adjust your timing advance after swapping the 20hp for 25hp carb. Other than that you're good to go. Perform these procedures (starting in the lower right corner of the 1st page section 6-15) only in a test tank or on the water, never with muffs on the motor. [img]https://i.imgur.com/5uuunQnh.png[/img] [img]https://i.imgur.com/luexWmkh.png[/img] [/QUOTE]
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20/25hp carb number difference
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