Impeller Replacement on 496 HO
 

I need to replace the impeller in my 2005 Baja w/ 496 HO. From previous threads and talking with mechanics it appears the fuel pump needs to come off first. Information on this is limited. The Merc service manual does look like what is in my boat. I don't mind spending the time but I don't want to go at it blind. If anyone can provide some insight I would greatly appreciate it.

just done mine and it was easy dont know if they are diff but mine is 2001 twin so its a bit tight in there but i undone the nuts 2 and 1 bolt took off the idler bracket uncliped the presure sender and the two clips to the hoses my belt was allready off as i remove when i laye up for the winter the rest is easy soapy water on the new impeller and to make it real easy us a tie rap to pull the blades round a touch this will help getting the imeller started make sure you bend them the same way as they came out if the back plate is groved get it planned off i used a buffer in the vice with course sanding grit pad and ran the back plate back and forth untill all the groves were gone . hope this helps

No need to remove the fuel pump.

Like Paul says, take the entire bracket (#14) off.

http://www.mercruiserparts.com/Show_...=Seawater+Pump

Taking the WP housing off with the pump still attached to the motor is a PIA. My boat allowed pretty good access too. But, it was still hard to remove.

Outlaw Mike,

Rookie has an excellant article on rebuilding his pumps, see the link below.

http://www.offshoreonly.com/forums/d...fuel-pump.html