www.iFourWinns.com

Hello everyone, I'm new to this forum.

I have a 2001 Horizon 190 with a 5.0GL Volvo engine.
I've had this boat for about four years.
I have been working on it and have changed the fuel filter and changed the oil and filter.
Next I want to change the oil in the drive unit, per manual I have loosen the oil dip stick and the oil level plug but can't get the oil drain plug loose, its a straight blade screw but won't loosen. Does anyone have an idea how to get this out?
Thanks for any help.

This is what I use...just make sure it’s going the correct direction.

https://www.amazon.com/Hi-Spec-Shock-Re ... NrPXRydWU=

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Jon Miller
1998 four Winns Horizon H200
Volvo Penta 4.3 GL
Newtown, CT

untitled-545 by millerjont, on Flickr

I have the same tool but have also used a heavy screwdriver and tapped the edge of the screw with a hammer on end of the screwdriver. That is how I saw it done by the mechanic at my dealer. Just be careful to not damage the screw. Comes loose rather easy with the proper strike.

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2008 Vista 278 Volvo Penta 8.1 Gi 375 hp
1999 Horizon 220 5.7 GSi

I use the biggest flat screw driver i own. You might want to order up some replacement plugs to have on hand just in case.

Go to HD or Lowes and get a giant flathead screwdriver. This flathead should be MUCH bigger than the largest screwdriver that comes in a standard 8-10 normal screwdriver set. It can double as a murder weapon. I have a Husky brand one. It has served me well.

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2007 FW Horizon 200 5.0GXi/SX-A

https://shop.snapon.com/product/Marine- ... river-(Red)/SGD155CR

best investment you'll ever make working on drive units.

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2002 FourWinns Horizon H180
4.3L Volvo Penta GXi

I also use a tool like jontmiller identified.

Another tip for straight or phillips screwdrivers to reduce or prevent slipping is to use a small amount of valve grinding compound on the screwdriver tip. The gritty texture works well. Be sure to not get the compound into places you don't want it.

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Surface Interval: A scuba diving term for that time between dives to relax and prepare for life's next great adventure.

Current boat: '02 FW 268 Vista
Previous boat: '95 FW 190 Horizon

I know this topic is old but I thought I'd add some useful advice.
You can clamp a set of vicegrips on the handle of the screwdriver for more torque and grip.

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1998 220 Horizon 5.7L GSI Volvo Penta DPX