YS 110 glow plug hole too small

[Eddie Batchelor]

I just purchased a YS 110. While attempting to install a YS -F glow plug
with a Magnum 4-way wrench, I discovered I could not get the 4-way wrench
into the opening. I had to use a socket head screwdriver to tighten the glow
plug.

I realize it's a cheap 4-way wrench but it goes into the opening on my used
YS 91AC with no difficulty.

Is the YS110 supposed to have a smaller opening?

How can I enlarge this opening to accept a 4-way wrench?

has anyone else seen this?

Eddie
AMA 80330
NSRCA 3584
KD5RJQ

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