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New valve guide install ?

#1

R

ruscar

I had to install a new exhaust valve guide in my 13 hp 28M707 and I need to know what size reamer I need. The best I can tell the valve is app. .309/.310. All help appreciated.
Thanks
Russell


#2

StarTech

StarTech

The closest to the Briggs finish reamer for 5/16 valves is a 8 mm. I actually measure .3145" on my finish reamer. It is also a LH twist version which might be throw calipers off a tad. Note if you installed Briggs 230655 bushing , it does not require finish reaming.


#3

R

ruscar

StarTech said:
The closest to the Briggs finish reamer for 5/16 valves is a 8 mm. I actually measure .3145" on my finish reamer. It is also a LH twist version which might be throw calipers off a tad. Note if you installed Briggs 230655 bushing , it does not require finish reaming.
Click to expand...
Thanks for your reply. I have 261961 bushing as that's what the online parts list called for.
So a .3125 reamer is too small? Never replaced one before and all I know comes from youtube.


#4

Scrubcadet10

Scrubcadet10

Google Drive: Sign-in

Access Google Drive with a Google account (for personal use) or Google Workspace account (for business use).
docs.google.com


#5

StarTech

StarTech

ruscar said:
Thanks for your reply. I have 261961 bushing as that's what the online parts list called for.
So a .3125 reamer is too small? Never replaced one before and all I know comes from youtube.
Click to expand...
All I can provide is the size of the finish reamer provided by Briggs which is .3145 [7.98mm].


#6

R

ruscar

StarTech said:
All I can provide is the size of the finish reamer provided by Briggs which is .3145 [7.98mm].
Click to expand...
Got it, 8mm it will be. Thanks again!


#7

R

ruscar

Scrubcadet10 said:

Google Drive: Sign-in

Access Google Drive with a Google account (for personal use) or Google Workspace account (for business use).
docs.google.com
Click to expand...
Thank you for the good reading!


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