5 HP CRAFTSMAN edger engine muffler is loud and leaks from crack in middle

[StarTech]

What's different between the BPR and BKR? different hex size?

You got it. BPR is 13/16" and the BKR is 5/8". Other than that the specs are the same.

 

[Scrubcadet10]

You got it. BPR is 13/16" and the BKR is 5/8". Other than that the specs are the same.
View attachment 59796

Good chart, i'll have to remember it

 

[Craftsman Garage]

What's different between the BPR and BKR? different hex size?

different socket sizes to turn, and bkr insulator is thicker and heavier duty.

 

[Craftsman Garage]

I have found that Champions seem to give less problems in 2 strokes
So I use NGK's in most 4 strokes & Champions in most 2 strokes unless the customer specifies a particular plug brand
I also stock Bosh plugs as I got a good deal on 400 of them .

champions also seem to have a higher heat range, but get hot quicker on my engine, probably because we are go-kart tuning it so it will be at full throttle a lot of the time when we accelerate

 

[bertsmobile1]

Yes
B=14mm thread
P= projected tip
K = reduced hex size
I have some very thin walled plug sockets so I usually don't bother keeping K plugs as they are in the next price group up .