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Jan 23rd, 2013
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75hp optimax merc service #12507203
11/17/17 10:49 PM
11/17/17 10:49 PM
Joined: Oct 2017
Posts: 79
Cleburne
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Thumpy Offline OP
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Thumpy  Offline OP
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Joined: Oct 2017
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Cleburne
I'm new to this. What oil do you guys run in the opti? How often do I need to clean/replace the fuel filter? How often do I need to replace lower end oil? 2007 model lowe stinger, 75hp mercury opti.

Bought this boat couple months ago, I've put 80 hours on my electeocnos, I assume around 40ish on the motor. Thanks in advance!

Re: 75hp optimax merc service [Re: Thumpy] #12507218
11/17/17 11:09 PM
11/17/17 11:09 PM
Joined: Oct 2017
Posts: 79
Cleburne
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Thumpy Offline OP
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Thumpy  Offline OP
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Joined: Oct 2017
Posts: 79
Cleburne
Electronics***

Re: 75hp optimax merc service [Re: Thumpy] #12507549
11/18/17 03:25 AM
11/18/17 03:25 AM
Joined: Nov 2014
Posts: 6,603
Red Oak, Galveston, and Pagosa...
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Joined: Nov 2014
Posts: 6,603
Red Oak, Galveston, and Pagosa...
Fuel filter changes as often as needed (especially with today's [censored] gas)...lower unit oil annually when you change the water pump impeller.....Penzoil synthetic blend in the oil tank. Also make sure to use a fuel stabilizer to help the above mentioned gas not turn bad as quick.

As for the hours.....highly unlikely that you are actually running the motor 50% of the time that the electronics are being used. In an 8 hour day of using the graphs, I might use the big motor for 15-30 minutes. More time if I'm idling through a stump field, and less time if I'm just moving from a spot to a spot.


Eat. Sleep. Fish.
Re: 75hp optimax merc service [Re: Thumpy] #12507777
11/18/17 12:36 PM
11/18/17 12:36 PM
Joined: May 2003
Posts: 11,496
Littlefield Tx & Lake A. H. US...
gary purdy Online content
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gary purdy  Online Content
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Littlefield Tx & Lake A. H. US...
Everything annually.


The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
Re: 75hp optimax merc service [Re: Thumpy] #12507872
11/18/17 02:35 PM
11/18/17 02:35 PM
Joined: Oct 2017
Posts: 79
Cleburne
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Thumpy Offline OP
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Is the fuel filter cleanable or replace?

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