k181 governor adj. wrench

[sqrlgtr 1,039]

Does anyone happen to know what size wrench fits nut behind the governor arm? I need to adjust rpms on the little 856 I've been working on. Looks like it needs to be a pretty thin wrench and was wanting to buy a cheap one and grind/mill thinner. Thanks

[squonk 44,607]

54 minutes ago, sqrlgtr said:

Does anyone happen to know what size wrench fits nut behind the governor arm? I need to adjust rpms on the little 856 I've been working on. Looks like it needs to be a pretty thin wrench and was wanting to buy a cheap one and grind/mill thinner. Thanks

I used the wrench I got with my angle grinder. Even used the grinder on the wrench so it fit

[wallfish 18,625]

It's 3/4" 

 

[sqrlgtr 1,039]

1 minute ago, wallfish said:

It's 3/4" 

 

thanks ishould have plenty of them laying around.

[rmaynard 16,584]

I use the wrench from my table saw. It's the correct size and is thin enough to fit without binding.

 

 

[ebinmaine 74,541]

16 hours ago, wallfish said:

It's 3/4" 

 

 

5 hours ago, rmaynard said:

I use the wrench from my table saw.

 

 

I r  not as smartererer

 

I struggled with a pair of needle nose pliers. 

 

 

 

You guys and your simple solutions.....

[wallfish 18,625]

4 hours ago, ebinmaine said:

I struggled with a pair of needle nose pliers. 

 

 

 

You guys and your simple solutions.....

That's exactly why it's good to have some of those cheap crappy tools around. I have no problem grinding or bending or both on them to make unique tools when needed. Wrenches, screwdrivers, pliers etc etc. You name it. Don't be scared to pay a dollar for some cheap tools that can be modified without remorse.

A modified wrench works good for those carb bolts too.

 

[Retired Wrencher 6,058]

On 9/28/2025 at 5:30 PM, sqrlgtr said:

Does anyone happen to know what size wrench fits nut behind the governor arm? I need to adjust rpms on the little 856 I've been working on. Looks like it needs to be a pretty thin wrench and was wanting to buy a cheap one and grind/mill thinner. Thanks

What you’re looking for is a tapit  wrench. It is a thin wrench for getting into tight spaces, so you can adjust your tapits on an engine. Well worth the investment.

Edited October 12 by Retired Wrencher

[pfrederi 18,969]

1 hour ago, Retired Wrencher said:

What you’re looking for is a tapit  wrench. It is a thin wrench for getting into tight spaces, so you can adjust your tapits on an engine. Well worth the investment.

The nut is 3/4"  Tappet wrenches are not usually that big.

[squonk 44,607]

I have 7/16" to 9/16" thin wrenches I used on hospital equipment. The 7/16" is great for those carb bolts. I have a bunch of 11/16" 3/4 and 7/8 "   flame wrench modified

wrenches "  I used on some large air handler motor belt tension adjusters.

 

 

[Retired Wrencher 6,058]

21 hours ago, pfrederi said:

The nut is 3/4"  Tappet wrenches are not usually that big.

 

[Retired Wrencher 6,058]

Back in 1973 when I got my real first job making very good money. I decided to start buying tools on Friday when I got out of work. So I go to Sears/ or Craftsman automotive  and looked around. They had to set of tappet wrenches that went up to 3/4 of an inch very thin. It fits well. So that is what I use. 

Edited October 14 by Retired Wrencher

[sqrlgtr 1,039]

I used a grinder and modified a wrench I already had. I ground it thinner and rounded it off some and it worked really well. Just happened to stumble across a set of (3/8-7/8) thin wrenches I forgot I had a day or two later . They were left to me from my grandpa, and I had totally forgot about them. They were Japan made but had to have been purchased in the 70's. Some of the cheap stuff made back then are better than some of the high dollar stuff made today.