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Adam X20
04-22-10, 02:13 PM
Does anyone have Service Manual for Merc 250 Optimax?

I need to know what Spark Plugs are specified for the motor,
and gap too...

Thank-you!

Adam.

Dr Honda
04-22-10, 07:51 PM
Since you are a premium member, you can get it here. But...


NGK PZFR5F-11

Gap; 0.043

Hope that helps :cheers:

Adam X20
04-24-10, 09:21 PM
I found NGK ZFR5F-11
(no P) NGK PZFR5F-11
what does the P represent?

Is there a iridium plug available?

Thanks,
Adam

Adam X20
05-27-10, 10:36 PM
Bought the plugs the manual advised : NGK PZFR5F-11

Turns out they are not the only type!

My motor uses IZFR5G (still Laser Iridium type)