What did I screw up this time?
#1
Senior Member

Thread Starter

F225, 2003 Yamaha Four stroke
Dropped the lower unit to replace the impeller, no problems everything came apart and went back together easily
But I can not get the lower unit into the engine. I am pretty sure the top spline just wont line up but after nearly two hours of sweating, cursing, bleeding, cursing some more I finally gave up
What did I do wrong? I have had this lower unit off three times and never an issue getting it back together.
Any tips before I go crawling to a mechanic and beg them to work me in? (All have a four week wait since they were all shut down by the state due to covid)
Dropped the lower unit to replace the impeller, no problems everything came apart and went back together easily
But I can not get the lower unit into the engine. I am pretty sure the top spline just wont line up but after nearly two hours of sweating, cursing, bleeding, cursing some more I finally gave up
What did I do wrong? I have had this lower unit off three times and never an issue getting it back together.
Any tips before I go crawling to a mechanic and beg them to work me in? (All have a four week wait since they were all shut down by the state due to covid)
#5
Admirals Club 


You can rotate the drive shaft with vice grips. I had to do this to get my lower units to engage the last time I dropped them. One motor I got it on the first adjustment, the second took three tries.
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#6

tilt the engine down straight . then send it straight up.
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#7

I would not put the motor in gear. Just rotate the shaft slightly by hand.
#8
Senior Member

Hit it harder...
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#9
Admirals Club 


Make sure the shift rod is lined up.
put gear case and shifter lever into forward gear. Rotate prop to help drive shaft splines line up.
Have someone jiggle the shift lever while you push up the lower unit, this helps the shift shaft splines line up
put gear case and shifter lever into forward gear. Rotate prop to help drive shaft splines line up.
Have someone jiggle the shift lever while you push up the lower unit, this helps the shift shaft splines line up
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