Power Steering Fluid
you are not getting a “false reading,” make sure the
followingstepsaredonebeforecheckingtheoillevel.
Use Quicksilver Power Trim and Steering Fluid, or
automatic transmission Fluid (ATF), Dexron, Dexron
II, Dexron IIl.
•
•
Boat “at rest” in the water, or
If boat is on a trailer, raise or lower bow until the
boat is setting at the approximate angle that it
would be if setting “at rest” in the water.
Transmission Fluid
•
Allow sufficient time for oil to drain into the crank-
case if engine has just been run or oil has just
been added.
Velvet Drive - 10 wt. tractor hydraulic fluid meeting
the C-3/TO-2 specification (preferably Mobil 424,
Chevron, or Citgo).
Hurth - Automatic transmission fluid (ATF) Dexron II
or Dexron IIl.
Checking Engine Oil Level/Filling
IMPORTANT: ENGINE CRANKCASE OIL MUST
BE CHECKED AT INTERVALS SPECIFIED IN
“MAINTENANCE SCHEDULE” CHART. It is nor-
mal for an engine to use a certain amount of oil
in the process of lubrication and cooling of the
engine. The amount of oil consumption is greatly
dependent upon engine speed, with consump-
tion being highest at wide-open-throttle and de-
creasing substantially as engine speed is re-
duced.
Coolant for Closed Cooling System
!
CAUTION
Alcohol or Methanol base antifreeze or plain wa-
ter, are not recommended for use in fresh water
section of cooling system at any time.
1.
2.
Stop engine and allow boat to come to a rest.
We recommend that the coolant section of closed
cooling system be filled with Quicksilver Pre-Mixed
Engine Coolant. In areas where the possibility of
freezing does not exist, it is permissible to use a solu-
tion of rust inhibitor and water (mixed to manufactur-
er’s recommendations).
Allow oil to drain back into oil pan - approximately
5
minutes.
3.
Remove dipstick. Wipe clean and reinstall. Push
dipstick all the way into dipstick tube.
4.
5.
Remove dipstick and note the oil level.
MerCruiser V-8 engines can use any type of perma-
nent antifreeze or any brand antifreeze solution that
meets GM specification 1825M.
Oil level must be between the FULL and ADD
marks.
6.
If oil level is below ADD mark, proceed to Steps
7
and 8.
Maintaining Crankcase Oil
Level
7.
8.
Remove oil filler cap from valve rocker arm cover.
Add required amount of oil to bring level up to, but
not over, the FULL mark on dipstick.
Overfilled Engine Crankcase
Changing Oil and Filter
Overfilled crankcases (oil level being too high ) can
cause a fluctuation or drop in oil pressure and rocker
arm “clatter” on MerCruiser engines. The over-full
condition results in the engine crankshaft splashing
and agitating the oil, causing it to foam (become aer-
ated). The aerated oil causes the hydraulic valve lift-
ers to “bleed down.” This, in turn, results in rocker
arm “clatter” and loss of engine performance, due to
the valves not opening properly.
1.
Start engine and run until it reaches normal oper-
ating temperatures.
IMPORTANT: Change oil when engine is warm
from operation, as it flows more freely, carrying
away more impurities.
2.
3.
Stop engine.
Remove drain plug from oil pan or from oil drain
hose.
Care must be taken when checking engine oil level.
Oil level must be maintained between the ADD mark
and the FULL mark on the dipstick. To ensure that
Index
1B-10 - MAINTENANCE
90-823224--2 796
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1993, 1994, 1995, 1996, 1997 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(4 votes, average: 4.5 out of 5)
Marine readers have rated 1993 1997 Mercury-MerCruiser GM V8 454 CID 7.4L and 502 CID 8.2L Marine Engines Service Manual Number 16 4.5 out of 5.0 based on 4 product reviews. Hugely helpful service manual! Perfect. Thank you!
Manuals are all Important for Technician
This book is invaluable if you do your own repairs. Great book.
Could not find a copy until a search brought me here.
Excellent print.
Thank you