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Honda 2008 150 hp

Re: Honda 150 hp

WHAT???? I don't own a 150, but that is ridiculous. Look again. It's basic maintenance.

Here is where it is on my 225, which should be similar. The prop shaft comes out of a rounded area on the bottom of the engine. On the bottom of that rounded area, on the port side, you will see a slotted screw. That's the lower unit drain. About 14 inches above that screw, under the cavitation plate, you will see a second slotted screw. That's the fill (top-off) plug.

Place your drain pan under the bottom plug. Remove the bottom plug. Then remove the top plug. The oil will drain out into your pan. Note the amount of filings on the bottom plug. It is magnatized. Filings should not be excessive.

To refill, purchase a lower unit pump that fits a gallon container. Purchase a gallon of the specified 90W marine gear lube. Also, purchase an adapter that fits the Honda bottom fill opening. Make sure the threads on the adapter match the plug you removed to drain the lower unit. Attach the adapter to the end of the pump line and screw it into the lower plug hole. Pump in gear lube until it starts to come out of the top plug hole. I think it's about 1.2 liters. When it starts to come out of the top opening screw in the top plug screw. Remove the filler adapter and stick your finger over the bottom hole until you can screw in the bottom plug.

It's always good practice to use new O rings on both plug screws.
 
Re: Honda 150 hp

Believe it or not there is nothing on the lower unit lube change in the Honda 150hp owners manual.

It sounds just like my old 1985 175hp Merc except that required that after you filled to the vent hole you let back out 1 oz to allow for lube expansion for when the lube became hot.

Thanks for the info.

chawk_man said:
WHAT???? I don't own a 150, but that is ridiculous. Look again. It's basic maintenance.

Here is where it is on my 225, which should be similar. The prop shaft comes out of a rounded area on the bottom of the engine. On the bottom of that rounded area, on the port side, you will see a slotted screw. That's the lower unit drain. About 14 inches above that screw, under the cavitation plate, you will see a second slotted screw. That's the fill (top-off) plug.

Place your drain pan under the bottom plug. Remove the bottom plug. Then remove the top plug. The oil will drain out into your pan. Note the amount of filings on the bottom plug. It is magnatized. Filings should not be excessive.

To refill, purchase a lower unit pump that fits a gallon container. Purchase a gallon of the specified 90W marine gear lube. Also, purchase an adapter that fits the Honda bottom fill opening. Make sure the threads on the adapter match the plug you removed to drain the lower unit. Attach the adapter to the end of the pump line and screw it into the lower plug hole. Pump in gear lube until it starts to come out of the top plug hole. I think it's about 1.2 liters. When it starts to come out of the top opening screw in the top plug screw. Remove the filler adapter and stick your finger over the bottom hole until you can screw in the bottom plug.

It's always good practice to use new O rings on both plug screws.
Click to expand...
 
Re: Honda 150 hp

I checked it out and they were exactly where you said they would be.

chawk_man said:
WHAT???? I don't own a 150, but that is ridiculous. Look again. It's basic maintenance.

Here is where it is on my 225, which should be similar. The prop shaft comes out of a rounded area on the bottom of the engine. On the bottom of that rounded area, on the port side, you will see a slotted screw. That's the lower unit drain. About 14 inches above that screw, under the cavitation plate, you will see a second slotted screw. That's the fill (top-off) plug.

Place your drain pan under the bottom plug. Remove the bottom plug. Then remove the top plug. The oil will drain out into your pan. Note the amount of filings on the bottom plug. It is magnatized. Filings should not be excessive.

To refill, purchase a lower unit pump that fits a gallon container. Purchase a gallon of the specified 90W marine gear lube. Also, purchase an adapter that fits the Honda bottom fill opening. Make sure the threads on the adapter match the plug you removed to drain the lower unit. Attach the adapter to the end of the pump line and screw it into the lower plug hole. Pump in gear lube until it starts to come out of the top plug hole. I think it's about 1.2 liters. When it starts to come out of the top opening screw in the top plug screw. Remove the filler adapter and stick your finger over the bottom hole until you can screw in the bottom plug.

It's always good practice to use new O rings on both plug screws.
Click to expand...
 
Re: Honda 150 hp

My Honda 150hp owners manual says the following about changing the lower unit lube:

"These items should be serviced by an authorized Honda Marine dealer, unless you have the proper tools and are mechanically proficient.
Refer to the Honda shop manual for service procedures."
 
Re: Honda 150 hp

Well, that IS strange.

You might want to invest in a shop manual for that engine. Order it from Helm. You can access them through the Honda Marine website.
 
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