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#1
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Lower Unit Removal on Johnson 225
I am in the process of changing the water pump on my Johnson 225, which is on my 84' model V20. The best I can tell, the motor is the same year, but was told by previous owner it was an 86 model. Either way, I have all of the bolts out, double checked, but cannot get lower unit off. There is a slight gap all the way around where it meets up, but that is the most I can get. I have read that it could be where it splines together at engine or something??? I am definately not familiar with these but would be considered very mechanically inclined. Any help on what I can do here to get it off without causing significant damage would be so very appreciated. Thanks in advance for the tips/suggestions!!
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#2
08-05-2012, 04:13 PM
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Did you disconnect the linkage for the shift mechanism just under the carbs? Johnson has a disconnect under the carbs that when partially disassembled will release the shift rod that travels from there to the lower unit. It will hang from the rod if you haven't made the disconnect.
__________________
 1996 -19' NV Flats 115 Mercury 4-stroke 1983 -20' Wellcraft Center Console 250 XS
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#3
08-05-2012, 04:31 PM
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And have you removed the bolt beneath the steering torque plate (trim tab)?
We have had instances where the shaft was seized to the crank or the o-ring on the shaft just held it unbelievability. We'd first engage the foot in gear and try to push down with our foot on the edge of the prop to see if it'll drop. This simply adds a little pressure to the splines and some downward force. If that didn't produce some movement, we'd then start a wedge and drive system to start separating the foot from the midsection. This starts out as small wood wedges in various locations to protect the foot and midsection and driving a screwdriver between them. Then progressing to larger wedges and chisels as it separates. Have had an instance where we made no appreciable progress and let it set for a few days with the tension of the wedges. Checking it a few time a day and driving the wedges tighter. Finally easily breaking free.
__________________
 '75 Cuddy with '00 Johnson Ocean Pro 150 horse Benny
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#4
08-06-2012, 08:08 AM
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I forgot to mention that I did remove the bolt from the shifter linkage as suggested along with the bolt underneath the trim tab, I apologize. So, I guess I should just start with some small wood shims and slowly increase the size as it drops? I will try that because a screwdriver did seem to mess things up a bit, which brings me to another question. Once I get the lower unit off, can I just repair what I "damaged with the wrong tools" before assembling with no future problems? I mean, besides cosmetics, is it critical that there is a water tight seal where the lower unit joins back up because if there is, I am sure I can repair it with no problems. I guess you guys see where the name "boatrookie" comes from, huh?!! I do appreciate all of the help though........
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#5
08-06-2012, 08:28 AM
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I had a older 225 at one point, and when the water pump went the same thing happened to me! After trying everything and hanging the motor upside down for a few days still nothing?? BS the founding member here came over and tried all his tricks and still nothing, sold the motor to another guy and that was the last I ever saw it, Thank God!! But till that it was a great motor.
__________________
1986 V20  Old Fishermen never die, we just SMELL that way!!
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#6
08-06-2012, 10:06 AM
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Also, does anyone know what the philips head screw right beside the water inlet is and if it has to be removed? I am not referring to the fill and drain plugs, but this one is right beside one of the inlet holes and it's only on one side. Thanks
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#7
08-06-2012, 12:48 PM
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The Phillips holds the strainer in. No need to remove it.
There's always water leaking between the foot and midsection, it's not sealed. Just file off any burrs you created. Also forgot to mention (if need be) with the tension of the wedges in place, you can whack the crank with a brass hammer. Careful to not damage the nut and flywheel. This jarring and already downward force might free it.
__________________
'75 Cuddy with '00 Johnson Ocean Pro 150 horse Benny
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#8
08-06-2012, 01:44 PM
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Pinion bearing retaining screw, but it is not a phillips. Manual says the V-6 doesn't use the pinion bearing retaining screw. So What Tsubaki said..
__________________
1996 -19' NV Flats 115 Mercury 4-stroke 1983 -20' Wellcraft Center Console 250 XS Last edited by RidgeRunner; 08-06-2012 at 01:52 PM.
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#9
08-06-2012, 02:47 PM
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this is why you change a water pump every year. had one on an older mako do the same thing,
like tsubaki said, keep tapping the wedges a little every day, went out one morning and it was laying in the driveway.
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#10
08-07-2012, 07:09 AM
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That is what I will do and pray that I too will walk out one morning and it be laying on the ground! Thank you all for the information
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