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Another lower unit oil change question #11489739 03/21/16 12:06 AM
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TxRanger1 Offline OP
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Trying to get the screws loose to change lower unit oil. These are in so tight that I cant break them loose with a screw driver. Any suggestions as to how to break them loose? I do not want to strip out the screw driver slot in the screw head.
Thanks guys

Re: Another lower unit oil change question [Re: TxRanger1] #11489773 03/21/16 12:30 AM
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jwcromer Offline
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is this your first time to remove them?.........left loose........right tight.

Re: Another lower unit oil change question [Re: TxRanger1] #11489795 03/21/16 12:43 AM
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Eric Reeves Offline
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Use a small punch and a hammer. Same effect as an impact

Re: Another lower unit oil change question [Re: TxRanger1] #11489799 03/21/16 12:45 AM
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TxRanger1 Offline OP
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It is the first time for me on this motor. It isnt the first time this motor has had an oil dchange. The screws are very tight.

Re: Another lower unit oil change question [Re: TxRanger1] #11489805 03/21/16 12:49 AM
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justchillin Online Embarrased
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Mine were like that to some degree. I could not seem to find a screwdriver that would fit just right into the shallow groove. I ended up having to take a bigger screwdriver and grind it down slowly, checking for the perfect fit. Grind a little , check fit ,grind more , check fit. After getting it ground to fit , I then put something around the handle for grip an pushed in on the screwdriver while trying to turn it and worked them loose. Hope this helps a little. Good luck.

Re: Another lower unit oil change question [Re: TxRanger1] #11490278 03/21/16 03:44 AM
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Bobby Milam Offline
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Go ahead and order new screws. You know you'll mess atleast one head up if they are that tight. When they are tight they are a pain to get off. The metal doesn't seem to be that hard.

Re: Another lower unit oil change question [Re: TxRanger1] #11490339 03/21/16 04:53 AM
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danwill12 Offline
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Go ahead and buy an impact driver set. You can use it for other things around the house? Mac, Snap On or Hobo Fright .

Re: Another lower unit oil change question [Re: danwill12] #11492373 03/22/16 02:49 AM
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jbobo Offline
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This will work. Just be careful hammering on the impact driver. Aluminum housing!
Originally Posted By: danwill12
Go ahead and buy an impact driver set. You can use it for other things around the house? Mac, Snap On or Hobo Fright .


22 ft. Wellcraft Deep V CC
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Re: Another lower unit oil change question [Re: TxRanger1] #11492453 03/22/16 03:23 AM
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stratos caster Online Content
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I had that problem I used a large craftsman screwdriver that has the flats on the shaft. Put a cresant wrench on the shaft and push in hard as you turn with the cresant.

Re: Another lower unit oil change question [Re: TxRanger1] #11492516 03/22/16 04:15 AM
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JimmyP Offline
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Snap-On has a Dzus button tool that works like a champ on these. If you know what they are and have access to a Snap-On truck you can get one for about 15 bucks i think. I had one from my racing days. Or Sears makes a real short Craftsman screwdriver in 5/16 I think, but that came out of the tool catalog. Not sure they have them in the store. Both have a square shank that you could put a small crescent on and turn while pushing in on the driver.

Last edited by JimmyP; 03/22/16 04:17 AM.
Re: Another lower unit oil change question [Re: TxRanger1] #11493420 03/22/16 04:38 PM
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redchevy Offline
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Always wondered why they couldn't put a hex/torx head screw in there and provide a torque spec... so much easier!

Re: Another lower unit oil change question [Re: TxRanger1] #11493818 03/22/16 07:27 PM
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JimmyP Offline
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An Allen head would be too simple. LOL Anything that raises costs lowers profit.

Re: Another lower unit oil change question [Re: TxRanger1] #11493944 03/22/16 08:22 PM
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Jiff7210 Offline
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A speed handle with a large bit works well too. You can really put some pressure on it.


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Re: Another lower unit oil change question [Re: JimmyP] #11497099 03/24/16 01:04 AM
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TxRanger1 Offline OP
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Originally Posted By: JimmyP
An Allen head would be too simple. LOL Anything that raises costs lowers profit.


Actually , I bought 2 new screws and washers and they are allen heads. Also got a impact screw driver and got them out.
Thanks for the help.

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