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Author Topic:   Changing a rectifier on a 40 hp mercury

grw66 posted 09-02-2003 09:09 PM ET (US)
Has anyone ever changed a rectifier in a 40 hp 2 stroke mercury motor? The motor was built in 95. If so is it hard to do, expensive and where is the darn thing located? Thanks Gary
grw66 posted 09-05-2003 03:33 PM ET (US)
Hi Friend, After you remove the motor cover you will see a plastic cover held on by about 6 bolts, (I think there 5/16 heads). The plastic cover might read CAUTOION, HIGH VOLTAGE. Remove the plastic cover and you will see the rectifer located on the bottom right hand side. It is held on by two bolts. The color of the rectifier is clear. You can see inside the rectifer. They use some kind of clear plastic to cover the printed circuit board inside. The cost is about $135.00. I believe there are about four wires that plug and un-plug for simple removal. It's a very easy job. Good luck.
Jamie 20 outrage posted 09-05-2003 08:04 PM ET (US)
Dear grw66, I hope you are careful about listening to grw66's advice, unless you know him well......
slazerow posted 09-14-2003 06:37 PM ET (US)
I just did replaced the regulator on my 95 Merc 40. It was very easy on only cost about $80 for the part from Shad Connection. Just match up the wires on the old on.

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Author	Topic: Changing a rectifier on a 40 hp mercury
grw66	posted 09-02-2003 09:09 PM ET (US) Has anyone ever changed a rectifier in a 40 hp 2 stroke mercury motor? The motor was built in 95. If so is it hard to do, expensive and where is the darn thing located? Thanks Gary
grw66	posted 09-05-2003 03:33 PM ET (US) Hi Friend, After you remove the motor cover you will see a plastic cover held on by about 6 bolts, (I think there 5/16 heads). The plastic cover might read CAUTOION, HIGH VOLTAGE. Remove the plastic cover and you will see the rectifer located on the bottom right hand side. It is held on by two bolts. The color of the rectifier is clear. You can see inside the rectifer. They use some kind of clear plastic to cover the printed circuit board inside. The cost is about $135.00. I believe there are about four wires that plug and un-plug for simple removal. It's a very easy job. Good luck.
Jamie 20 outrage	posted 09-05-2003 08:04 PM ET (US) Dear grw66, I hope you are careful about listening to grw66's advice, unless you know him well......
slazerow	posted 09-14-2003 06:37 PM ET (US) I just did replaced the regulator on my 95 Merc 40. It was very easy on only cost about $80 for the part from Shad Connection. Just match up the wires on the old on.