How to remove the lower unit on a mercury outboard

Remove anode for the 5th and one more underneath where the anode came off. Outboard motor - Wikipedia Nell Johnson Since then Mercury has grown out of its barn accommodations and into a leading manufacturer of outboards.

Second the easiest way is pull the prop off and run the engine in gear while on flushing muffs.

How to remove the lower unit on a mercury outboard. Remove the trim tab bolt and the trim tab followed by the 15mm lower unit mounting bolt hidden beneath the trim tab. Support the lower unit to prevent it from dropping and remove the four 16mm lower unit mounting bolts from around the top of the lower unit. Remove the lower unit from the outboard.

15 hp 1998 mercury outboard manual shows a coupler wjam nut to disconnect the upper and lower shift shaft for removal of the lower unit my engine has a one piece shaft how do I separate the lower. Im trying to remove the lower unit of a 200 hp mercury optimax. I cannot seem to get the unit to come free.

I have removed the 4 nuts and the bolt going to the corrosion protection on rear. The unit is in forward gear but its like its painted on. First thing check the lower unit oil.

If there is water in it the bent shaft is a mute point. Second the easiest way is pull the prop off and run the engine in gear while on flushing muffs. Look at the center mark of the shaft and see if it wobbles even a little.

How do you remove a boat prop shaft. How To Remove an Inboard Boat Propeller. Leave the Nut On.

How to Remove Mercury 200XL Verado Lower Unit. Remove the top cowling the rear cover assembly and both side chaps. Remove the oil fill cap so the system can vent then position a drain pan beneath the oil drain bolt and remove the drain bolt.

Support the lower unit to prevent it from suddenly dropping then remove the four 16mm lower unit mounting bolts. Carefully slide the lower unit away from the outboard being careful not to damage the drive shaft or the shift shaft and youre done. LOWER UNIT REMOVAL DISASSEMBLY.

Always disconnect the battery cable before removing lower unit. Shift to NEUTRAL position. Remove bolt and trim tab 1.

Remove seven 7 bolts 2 and separate gearcase 3 from driveshaft housing. Remove clutch rod from clutch shaft if necessary. Place a drain pan under oil drain plug.

For motors with serial numbers 0D283222 and above. I hope this video helps someone. I found a lot of videos online but none of my exact motor.

One piece of a. Outboard motor - Wikipedia Nell Johnson Since then Mercury has grown out of its barn accommodations and into a leading manufacturer of outboards. Sealing the gear oil inside the gearcase and keeping water from intruding into the gearcase are the two aims of all the shaft seals o-rings spaghetti seals and gaskets in a lower unit.

The shifter on these lower units uses a spring loaded clutchThe clutch is spring loaded into forwardAs you turn the shift shaft the cam pushes the pin and moves the clutch to the neutral position and then the reverse position. Your problem is that you turned your shifter counter clockwise right past the reverse position and into a position where the shifter moves freely for around a half turn with. This is for 1980-2005 Johnson Evinrude EnginesWater Pump Kit Reference Chart.

Use the socket wrench extender and 916-inch socket to remove the hidden bolt holding the lower unit in place. Pull the lower unit away from the rest of the motor twisting the lower unit if necessary to free the drive shaft and shifter. Use appropriate caution when removing the unit and wear safety shoes.

Slide the lower unit straight down and off the outboard. Set the lower unit upright in a bench vise. Remove the four bolts holding the water pump together from the water pump housing with a socket wrench.

Slide the impeller from the lower unit and slide them up and off the driveshaft. 2004 Mercury 115 ELPT Lower Unit Removal One nut at front of LU near the shift rod. Two just back that attach on top.

Two more under the plate. Remove anode for the 5th and one more underneath where the anode came off. You noted 5- there are 6.

Although being labeled the father of Mercury Outboards its interesting that Kiekhaefer actually worked as a draftsman for Evinrude outboard motors in 1927 however was fired after just 3 months employment with Evinrude. Kiekhaefer had 3 unique qualities that made him less than the ideal employee 1 He had a keen eye to see inherent flaws in mechanical designs 2 He often fixated and worked tirelessly trying. The lower unit LU on outboards house the water pump and gearbox as well as supporting the thrust bearing for the propeller.

There are several seals that can go bad and necessitate LU removal. Water pump maintenance also requires removal and will typically be done at least once a. The lower unit is the part of the motor lower than the exhaust housing.

It holds the drive shaft the propeller shaft the water pump and the gears. The lower unit on Mercury outboards must be removed to change the water pumps impeller. Replacing the lower unit.