Mercury MerCruiser 496 CID 8.1L Gasoline Marine Engines Service Manual Number 30

SERVICE MANUAL NUMBER 30
VELVET DRIVE 5000 SERIES TRANMISSION
Velvet Drive 5000 Series
Engine
All current production engines are LH rotation. Engine rotation is described when observed
from the rear of the engine (transmission end) looking forward (water pump end).
Installed angle of MIE inboard transmission and engine should not exceed a maximum of
18
° of the water line.
Transmission
Transmission gear ratio is marked on transmission identification plate, which is located on
the port (left) side of transmission. Transmission output shaft rotation and propeller rotation
required is indicated on a decal on transmission case. Transmission rotation is described
when viewed from the rear of transmission with transmission in forward gear selector posi-
tion.
DO NOT start or crank engine without fluid in transmission.
Use only recommended fluid in transmission.
Except in an emergency, never shift transmission at engine speeds above 1000 rpm.
Free wheeling of one propeller (in a twin engine boat), at trolling speeds, will not cause
damage to the transmission; however, boat  operation above trolling speed should be
avoided. Be sure proper fluid level exists before free wheeling propeller.
DO NOT paint shift lever poppet ball and spring. Paint will prevent proper action of the
detent.
Always replace oil cooler and hoses after a transmission failure or prior  to installing a
new or rebuilt transmission. Metallic particles from a failure tend to collect in the cooler
and hoses and will gradually flow back into the fluid system and damage transmission.
Always use specified oil cooler, hoses and fittings.
Propeller
Propeller rotation is described when observed from the rear of the boat (stern) looking for-
ward (bow end). The term left-hand (LH) refers to rotation in the counterclockwise (CCW)
direction. The term right-hand (RH) refers to rotation in the clockwise (CW) direction. A LH
propeller will move  the boat forward when  rotated counterclockwise. A RH propeller  will
move the boat  forward when rotated  clockwise. Propeller rotation is  not necessarily the
same as engine rotation.
INDEX
90-863161
SEPTEMBER 2000
Page 8A-7
Product Specification
CategoriesMercury MerCruiser Manuals
Tags
Model Year1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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Mercury MerCruiser 496 CID 8.1L Gasoline Marine Engines Service Manual Number 30 SKU UPC Model
Sven-Erik Walin on Jun 10, 2018. crankcase ventilation

How many openings for crankcaseventilation is there on
Merc 496 HO ?


John fox on Apr 11, 2018. Manual

Great down load . it was all there an more


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