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#11123142 - 09/23/15 03:42 PM putting shims in your lower unit??
Skeeter man ZX225 Offline
Extreme Angler

Registered: 05/30/03
Posts: 2534
How do you know when you need to shim your lower unit as you are rebuilding it with a new shaft?

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#11124293 - 09/24/15 08:11 AM Re: putting shims in your lower unit?? [Re: Skeeter man ZX225]
Tommy Yetts Offline
TFF Team Angler

Registered: 12/14/02
Posts: 3448
Loc: Rockwall, TX USA
You should always check the shimming, however most of the time when you are just replacing a propshaft or driveshaft it doesn't change the shimming. However in some of the late model Mercury motors changing a propshaft does require shimming.


Edited by Tommy Yetts (09/24/15 08:12 AM)
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Rockwall Marine
Tommy Yetts

www.rockwallmarine.com

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#11124450 - 09/24/15 09:15 AM Re: putting shims in your lower unit?? [Re: Skeeter man ZX225]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10863
Loc: Littlefield Tx & Lake A. H. US...
You need a good factory service manual.
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“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” GOD IS GOOD

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#11125430 - 09/24/15 04:33 PM Re: putting shims in your lower unit?? [Re: Skeeter man ZX225]
Skeeter man ZX225 Offline
Extreme Angler

Registered: 05/30/03
Posts: 2534
Mr. Purdy where can I find one of the good factory service manuals for a 2007 hpdi 225

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#11125440 - 09/24/15 04:35 PM Re: putting shims in your lower unit?? [Re: Skeeter man ZX225]
Skeeter man ZX225 Offline
Extreme Angler

Registered: 05/30/03
Posts: 2534
Tommy? what am I looking for when checking the shimming? back a forth play? I replaced the prop shaft 5 years back in the 150 hp Yamaha that I had and it was still running when I sold it, but I did nothing with the shims and it had a bit of back and forth play. Plus thank you for your input

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#11125953 - 09/24/15 08:42 PM Re: putting shims in your lower unit?? [Re: Skeeter man ZX225]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10863
Loc: Littlefield Tx & Lake A. H. US...
Through a Yamaha dealer.
_________________________
“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” GOD IS GOOD

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#11126554 - 09/25/15 08:00 AM Re: putting shims in your lower unit?? [Re: Skeeter man ZX225]
Skeeter man ZX225 Offline
Extreme Angler

Registered: 05/30/03
Posts: 2534
Thank you

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#11126622 - 09/25/15 08:36 AM Re: putting shims in your lower unit?? [Re: Skeeter man ZX225]
Tommy Yetts Offline
TFF Team Angler

Registered: 12/14/02
Posts: 3448
Loc: Rockwall, TX USA
Skeeter, Like I said when you replace the propshaft in your motor you did not need to check the shimming. The shimming process makes sure your gears mesh properly at the right depth. You will always have a little end play in the propshaft.
_________________________
Rockwall Marine
Tommy Yetts

www.rockwallmarine.com

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