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Intake air screen removal

#1

4

40cpe

I have a Gravely zero turn with a Kawasaki FX691V engine. I have adjusted the valves and while I was at it wanted to remove the cooling shroud to clean the head fins. The intake air screen that rotates with the fan has hex head screws to hold it on. A metric 3mm is a loose fit and 4mm is too large. A SAE hex key doesn't fit any better. The 3mm hex key just slips in the screw head. I'm looking for a solution to get them out. Thanks in advance for any advice.


#2

R

Rivets

I have found that sometimes using a torx wrench will grab. Not best way to do it, but sometimes you need to think out of the box.


#3

StarTech

StarTech

And you find a hammer and punch very useful in freeing them up too. They do seize so tight it doesn't matter what you use the heads will strip if you don't use a hammer and punch.


#4

ILENGINE

ILENGINE

StarTech said:
And you find a hammer and punch very useful in freeing them up too. They do seize so tight it doesn't what you use the heads will strip if you don't use a hammer and punch.
Click to expand...
Which is probably the reason the heads got messes up to begin with.


#5

R

Rocky J

A cut off wheel to cut standard screw driver slots can work .


#6

S

slomo

Get you an I-Fix-It-Kit. They have a ton of precision ground bits in all kind of unique sizes.


#7

S

slomo

StarTech said:
And you find a hammer and punch very useful in freeing them up too. They do seize so tight it doesn't what you use the heads will strip if you don't use a hammer and punch.
Click to expand...
Yup, steel screws in aluminum parts. Dissimilar metals....... Glob on some anti-seize when you get them out.

Carb bowl screws. Dope them up when you clean a carb. Much easier to remove for the next guy. Blade retaining bolts.


#8

sgkent

sgkent

You say "Hex head." Is it Torx, Allen, or Star? Look closely and Google them if that means nothing to you. You need the right one for whatever kind of bolt it is.


#9

R

RayMcD

40cpe said:
I have a Gravely zero turn with a Kawasaki FX691V engine. I have adjusted the valves and while I was at it wanted to remove the cooling shroud to clean the head fins. The intake air screen that rotates with the fan has hex head screws to hold it on. A metric 3mm is a loose fit and 4mm is too large. A SAE hex key doesn't fit any better. The 3mm hex key just slips in the screw head. I'm looking for a solution to get them out. Thanks in advance for any advice.
Click to expand...
Soak overnight in Kroil Oil before you start. ☺


#10

O

outdoorpowermike

40cpe said:
I have a Gravely zero turn with a Kawasaki FX691V engine. I have adjusted the valves and while I was at it wanted to remove the cooling shroud to clean the head fins. The intake air screen that rotates with the fan has hex head screws to hold it on. A metric 3mm is a loose fit and 4mm is too large. A SAE hex key doesn't fit any better. The 3mm hex key just slips in the screw head. I'm looking for a solution to get them out. Thanks in advance for any advice.
Click to expand...
I think the screws are 15-25 torque type heads. Should remove them.


#11

4

40cpe

OK guys, I have a confession to make here. I'm 82 and my eyes aren't what they should be. There was dust on the screw heads and I thought they were allen head. I tried a torx as suggested and it was the correct tool. After using the torx head I could see where the "teeth" slots were. Thank you all for the suggestions!


#12

O

outdoorpowermike

Using the wrong size torque socket and maybe have damaged them. Pretty sure they are somewhere like a T20, T25, T27, T30, T35, Tap on socket lightly with hammer, maybe dirt packed in the top of screws, blow dirt out.


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