Re: Mercruiser D1.7 DTI - Drain Plugs
Draining closed system
(no need to do this if anti freeze is added, and systems holds correct temp)
IMPORTANT: Observe the following:
? Insert a wire into drain holes to ensure that foreign material is not obstructing the drain holes.
? Engine must be as level as possible to ensure complete draining of cooling system.
? Closed cooling section must be kept filled year round with recommended coolant. If engine will be exposed to freezing temperatures, make sure closed cooling section is filled with an ethylene glycol anti-freeze and water solution properly mixed to protect engine to lowest temperature to which it will be exposed.
? Do not use Propylene Glycol anti-freeze in the closed cooling section of the engine.
WARNING
Allow engine to cool before removing pressure cap. Sudden loss of pressure could cause hot coolant to boil and discharge violently causing severe injury.
1. Allow engine to cool. After engine has cooled, turn cap 1/4 turn to allow any pressure to escape slowly, then push down and turn cap all the way off of heat exchanger/coolant tank.
2. Drain coolant by removing drain plug.
a - Coolant Drain Plug
3. Clean out drain hole using a stiff piece of wire; repeat until entire system has drained.
4. After coolant has drained completely, coat threads of drain plug with Perfect Seal and reinstall. Tighten securely
5. Empty coolant recovery bottle.
6. If required, clean system.
Cold Weather or Extended Storage
(This you should do)
Power Package Layup
IMPORTANT: Mercury MerCruiser strongly recommends that this service be
performed by an Authorized Mercury MerCruiser Dealer. Damage caused by freezing IS NOT covered by the Mercury MerCruiser Limited Warranty.
CAUTION: The engine must be prepared for long storage periods to prevent internal corrosion and severe damage.
CAUTION: DO NOT operate engine without water flowing through the seawater pickup pump, as pump impeller may be damaged and subsequent overheating damage to engine or sterndrive unit may result.
IMPORTANT: If boat has already been removed from water, before starting engine a source of water must be supplied to water intake openings. Refer to
Flushing Cooling System.
1. Supply cooling water to water inlet openings on sterndrive unit.
2. Start engine and operate until it reaches normal operating temperature. Stop engine.
3. Change oil and filter.
4. Start engine and operate for about 15 minutes. Ensure there are no oil leaks.
5. Flush cooling system. Refer to Flushing Seawater Section of cooling system.
DRAINING INSTRUCTIONS
IMPORTANT: Drain seawater section of closed cooling system only.
IMPORTANT: Closed cooling section must be kept filled year-round with the
specified coolant.
IMPORTANT: Do not use Propylene Glycol anti-freeze in the closed cooling section of the engine.
1. Ensure that engine is as level as possible to ensure complete draining of cooling system.
CAUTION: If boat is to remain in the water, seacock must remain closed until engine is to be restarted to prevent water from flowing back into seawater cooling system. If boat is not fitted with a seacock, water inlet hose must be disconnected and plugged to prevent water from flowing into cooling system and/or boat. As a precautionary measure, attach a tag to the key switch or steering wheel with the warning that the seacock must be opened or the water inlet hose reconnected prior to starting the engine.
2. Close seacock, or disconnect and plug seawater inlet hose if boat is to remain in the water.
CAUTION: Avoid damage to heat exchanger and subsequent possible engine damage.
Remove all water from heat exchanger sections. Failure to do so could cause
corrosion or freeze damage to heat exchanger water passage tubes.
3. Remove drain plug from front cover of heat exchanger.
a - Drain Plug
b - Front Cover
c - Heat Exchanger
4. Remove drain plug from lower part of intercooler.
a - Drain Plug
b - Intercooler
5. Repeatedly clean out drain holes using a stiff piece of wire until entire system is drained.
6. Insert a small wire (repeatedly) to make sure that speedometer pitot tube, trim tab/anode cavity vent hole and trim tab/anode cavity drain passage are unobstructed and drained.
a - Speedometer Pitot Tube
b - Vent Hole
c - Drain Passage
7. After seawater section of cooling system has been drained completely, coat threads of drain plugs with Perfect Seal and reinstall. Tighten securely.
8. After draining, perform all checks, inspections, lubrication and fluid changes outlined in Maintenance Schedules.
9. Clean seawater strainer, if equipped.
10. Clean engine and coat with Corrosion Guard.
11. Lubricate all cables and linkages.
12. Remove and store battery in a cool, dry place. Do not store on a concrete surface or on the ground. Place on a dry, wood board or a thick plastic base (refer to battery manufacturer?s instructions).
CAUTION: Sterndrive unit should be stored in full DOWN / IN position. Universal Joint bellows may develop a set if unit is stored in raised position and may fail when unit is returned to service.
13. Place sterndrive unit in the full DOWN / IN position.
Now you have something you do
If you ask Don maybe you can borrow his manual?
