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Old 11 July 2018, 16:51   #1
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Country: UK - England
Town: North East
Boat name: Sarah Louise
Make: Honwave T38IE
Length: 3m +
Engine: 15 Yamaha, 8 Mariner
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Posts: 228
B7HS-10 Vs BR7HS-10

Hi,

I have two engines, an 1984 15D Yamaha and a 1984(ish) 8hp Mariner.

The Mariner uses B7HS-10 and the Yam recommends BR7HS-10 spark plugs.

I have read the R stands for resistor and is supposed to reduce radio interference.

I want to stock up on spares but was wondering if one can be used in place of the other so I donít have to carry a number of spares for each engine?

I did read one type protects cdi engines (?).

Thanks in advance for any help.
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Old 13 July 2018, 02:35   #2
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Country: UK - England
Town: North East
Boat name: Sarah Louise
Make: Honwave T38IE
Length: 3m +
Engine: 15 Yamaha, 8 Mariner
Join Date: Jul 2008
Posts: 228
I guess this is a tricky question.

I have bought spares of both now so not to worry.
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