Can a Tohatsu MFS9.9B 3V5 be upgraded to 15hp?

[burchy50]

Hi I'm seeing some things about upgrading a Tohatsu 9.9 to 15HP. Does anyone know if I can upgrade mine and if so parts needed? I am seeing some blogs saying its a quick single part swap that take 10 minutes.

MFS9.9B 3V5

 

[pvanv]

362637180m	throttle cam	$8.68

 

[km1125]

Is the MFS a four stroke or a two stroke?

 

[pvanv]

Oh duh. My bad. That cam is for the M9.9B 2-stroke... Not the MFS9.9 4-stroke. To do the 4-stroke, you need a different carburetor.

3R3035002M

CARBURETOR ASSY, 15A-B 4-STROKE

$248.55

 

[burchy50]

Sorry yeah it’s a 4 stroke. So it’s a simple carb swap only not cam and carb? Great!! Thank you guys for the help!

 

[pvanv]

Yep. Change the carb.