SOHC.co.uk Forums > CB750

Slow Jet Size?

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Andrew-S:
Thanks for the info Paul, very useful.

Cheers,
Andrew

Andrew-S:
Well, the jets are finally out - the carbs were inside pretty clean although there's evidence they've been very dirty in the past, so they'll be ultrasonically cleaned and reassembled.

Jet sizes: the jets removed were 35 slow and 120 main, so given modern fuel runs cooler giving symptoms of rich running on a std step-up and I believe NGK recommend using a hotter plug, so I'll go with Trigger and Paul G's recommendation of 40/110.

Plugs: what plugs are 750 owners running especially if using the 40/110 set-up?

Cheers, Andrew

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