Deck Hatch Square Head Size?

[YamahaCC]

Can someone please confirm the square head size used to remove the deck hatch over the fuel tank? I bought one a few years back when I replaced the sender but can't find it and want to gain access again. Thanks!

 

[ZippyBoater]

Can someone please confirm the square head size used to remove the deck hatch over the fuel tank? I bought one a few years back when I replaced the sender but can't find it and want to gain access again. Thanks!

I saw it in the FAQ yesterday when I was researching the Fuel Sending Unit.

"https://jetboaters.net/faq/#faq-41"

 

[scokill]

#4 Robertson Bit. I forgot where I bought mine, but here is a link on Amazon. $20 for 10. I believe I paid $4/bit and bought 3. Wera Series 1 868/1 Z Sheet Metal Bit, Square-Plus # 4 Head x 1/4" Drive (Pack of 10): Screwdriver Socket Bits: Amazon.com: Gateway

 

[Tom Dolhancryk]

Ordered the Roberson #4 square head bits and did not fit the deck hatch on my 2007 SX210, ordered the #4 phillips head, perfect got 10 out without breaking , will have to drill out the other two.

 

[zipper]

A #4 square bit is the tool to use on my M/Y. Cleaning sand from the head and setting the bit with a couple of taps with a hammer did the trick for me. The factory uses a sealant on the threads. Using the same motion, loosen/tighten, that you would as cutting threads with a tap/die helped release the sealant.

https://jetboaters.net/threads/the-official-what-did-you-do-to-your-jet-boat-today-thread.2661/page-44#post-234198

 

[Tom Dolhancryk]

Yes, i don't know what to say.... the square tips would not grab. I had bought an impact tool from Harbor Freight, it had only as high as a [HASH=677]#3,,it[/HASH] got two out before breaking, so I ordered the 10 pack of #4 phillips on Amazon. They did the trick for me.....and yes, easy does it, back and forth with plenty of penetrant oil along the way. The two broke off left the studs standing, tried to loosen with a pair of vise grips, but it just broke off flush.
Any idea what size drill bit to use to drill it out? Put it back together to salvage the remainder of the season.Will get to it after the season here in Wildwood NJ