Winterizing 496 HO Mag
#11
Registered
Thread Starter
Join Date: Feb 2013
Location: Mason, MI
Posts: 111
Likes: 0
Received 0 Likes
on
0 Posts
I drain the water out of the system, and run 3 gallons through on just stabilized gas.
Then I add the 2-stroke oil to the fuel/water separate and run another 3 gallons through.
6 per engine if done that way.
If you drain the water, and mix up 2-stroke cocktail in a separate can; 5 gallons would be minimum; and standard for any BBC.
Then I add the 2-stroke oil to the fuel/water separate and run another 3 gallons through.
6 per engine if done that way.
If you drain the water, and mix up 2-stroke cocktail in a separate can; 5 gallons would be minimum; and standard for any BBC.
#13
Registered
I mix up the "cocktail" in a 1 gallon gas can per the Merc manual. It's fresh gas, 2 stroke oil and Sta-Bil (I forget the exact amount of oil). I simply remove the main fuel line off of the gas tank and stick it in my little gas can. Then I run the engine on this mixture for an extended period until I see smoke coming out the pipes. You'll also smell the 2-stroke oil in the exhaust. I installed a plastic hose spiget on the bottom of a 5 gallon bucket. I fill the bucket with pink Prestone RV anti-freeze and put it on the swim platform. I then remove the garden hose from the muffs and I install a 3-4 foot pc. of hose from my bucket spiget to the muffs. I restart the engine and let it run until the pink anti-freeze starts coming out of the exhaust pips and around the drive. Gravity provides enough pressure to feed the anti-freeze to the seawater pump. After this, I let the engine cool down and I remove the 2 filters from the cool fuel module and replace them.
#14
Registered
#15
Registered
Just found the bulletin:
Fogging Mixture
In a 6 US gal (23 L) remote outboard fuel tank, mix:
5 US gal (19 L) regular unleaded 87 octane (90 RON) gasoline.
64 fl oz. (1.89 L) Mercury or Quicksilver Premium Plus 2-Cycle TC-W3 Outboard oil.
5 fl oz. (150 mL) Mercury or Quicksilver Fuel System Treatment and Stabilizer, OR
1 fl oz. (30 mL) Mercury or Quicksilver Fuel System Treatment and Stabilizer
Concentrate.Page 2 of 2 SEPTEMBER 2001 2001-15
New Fogging Procedure
1. Disconnect and plug boat’s fuel line from Water Separating Fuel Filter inlet.
2. Connect remote outboard fuel tank (with the fogging mixture) to the inlet of the Water
Separating Fuel Filter.
IMPORTANT: If the boat is out of the water, follow instructions for running engine on
flush device as found in service manual for the engine being fogged.
3. a. Cool Fuel models: Start and run engine at 1300 rpm for 5 minutes.
b. VST models: Start and run engine at 1300 rpm for 10 minutes.
4. After specified running time is complete, slowly return throttle to idle rpm and shut engine
off.
IMPORTANT: Do not run engine’s fuel system dry of this fogging mixture in the 6 US
gal (23 L) remote outboard fuel tank.
Fogging Mixture
In a 6 US gal (23 L) remote outboard fuel tank, mix:
5 US gal (19 L) regular unleaded 87 octane (90 RON) gasoline.
64 fl oz. (1.89 L) Mercury or Quicksilver Premium Plus 2-Cycle TC-W3 Outboard oil.
5 fl oz. (150 mL) Mercury or Quicksilver Fuel System Treatment and Stabilizer, OR
1 fl oz. (30 mL) Mercury or Quicksilver Fuel System Treatment and Stabilizer
Concentrate.Page 2 of 2 SEPTEMBER 2001 2001-15
New Fogging Procedure
1. Disconnect and plug boat’s fuel line from Water Separating Fuel Filter inlet.
2. Connect remote outboard fuel tank (with the fogging mixture) to the inlet of the Water
Separating Fuel Filter.
IMPORTANT: If the boat is out of the water, follow instructions for running engine on
flush device as found in service manual for the engine being fogged.
3. a. Cool Fuel models: Start and run engine at 1300 rpm for 5 minutes.
b. VST models: Start and run engine at 1300 rpm for 10 minutes.
4. After specified running time is complete, slowly return throttle to idle rpm and shut engine
off.
IMPORTANT: Do not run engine’s fuel system dry of this fogging mixture in the 6 US
gal (23 L) remote outboard fuel tank.
#16
[ATTACH=CONFIG]510221[/ATTACH]
http://www.mercruiserparts.com/Show_...ND+FUEL+COOLER
#18
Roger that. You have the later model 496HO with the replacement element fuel/water separator.
The early models have spin on replacements, just like an oil filter.
Early models like I have, are easy to remove the f/w separator, pour out 1/2 the gas, and add 2-stroke oil, re-install and fog the motor that way.
Later models, like you have, are a little easier to fog with the cocktail/separate tank method.
FWIW, I leave the fuel/water separator on the boat over the winter, and when I first fire in the spring; I'll fire up with that f/w separator that still has some of the two-stroke oil in it. IMHO, that lubes the cylinders a little bit extra from top down come first fire in the spring. After the first fire, then I put on new f/w separators for the season.
The early models have spin on replacements, just like an oil filter.
Early models like I have, are easy to remove the f/w separator, pour out 1/2 the gas, and add 2-stroke oil, re-install and fog the motor that way.
Later models, like you have, are a little easier to fog with the cocktail/separate tank method.
FWIW, I leave the fuel/water separator on the boat over the winter, and when I first fire in the spring; I'll fire up with that f/w separator that still has some of the two-stroke oil in it. IMHO, that lubes the cylinders a little bit extra from top down come first fire in the spring. After the first fire, then I put on new f/w separators for the season.
#20
It is a good idea to change your oil and oil filters just prior to running the engine for the fogging procedure. You don't want the old dirty oil sitting in your engines all winter and having fresh oil in during the fogging process will coat the internal parts with the fresh oil.