Merc 25HP OC128527

[James R]

Can anyone tell me the correct plugs for this motor.
The manual shows plugs by year model but what year is this motor?
Thanks in advance.

 

[Fun Times]

Your serial number has your engine listed to be an 1989 MERCURY 25-HP (MH) (2 CYL.) Model Number 1025201GD.

https://www.crowleymarine.com/mercury-outboard/367.cfm?mdl=AUASMT&q=1025201GD

https://www.crowleymarine.com/mercury-outboard/parts/367_25.cfm?mdl=AUASMT

You'll want to see if you can open the following link of what should be Mercury Service Bulletin # 91-36 regarding the spark plugs to use, https://www.crowleymarine.com/sb/2/2220