Reply To: Mark 55 won’t shift after impeller change

[Pondrocket]

John,

when installing lower unit to mid do not have boat side controls hooked up to engine.

• lower unit in proper working order
• set LU shift shaft in forward or Neutral with pliers
• install lower cam on shift shaft at roughly 45 degree angle per book do not disturb shift shaft position
• grease up and install upper reverse locking cam in mid section
• Install lower unit to mid section
• driveshaft 1st into powerhead spin flywheel to engage
• next is shift shaft this is tricky at times need to align upper shift shaft with lower in correct position might need a screwdriver or flat tool to center up then once engaged keep going up.
• last but not least install copper tube to water outlet
• then keep going don’t go all the way up need to thread on 2 bolts then the 3rd 5/16” allen set screw at rear of housing
• once all is installed shift in forward & neutral on engine lever to make sure all is working properly
• this installation can be done by 1 person that understands installation, its best for a 2 person operation to help out.

 

Toughest part is getting shift shaft set up and aligned properly. Hope this helps

 

Travis

 

 

Travis