Marquis 500 Sport Bridge, Owner'S Manual

Page: 105 / 124

M
aintenance
M
aintenance
surfaces with a solution of fresh water and mild liquid detergent . Remove fine scratches with a fine automotive acrylic rubbing and
polishing compound .
CauTiON
DO nOt USE gLASS cLEAnERS, AbRASivE cLEAnERS, OR AROmAtic SOLvEntS On pLEXigLAS. AbRASivE cLEAn-
ERS EtchES thE pLEXigLAS.
m
eCHaniCaL
s
Ystems
Mechanical Systems explains how to maintain the yacht’s propulsion, electrical, fresh water, bilge and sanitation systems .
ENGINES/GENERATOR
Refer to the engine and generator OEM information for instructions on maintaining the yacht’s engines and generator .
As an option, a seawater strainer may be installed in the water intake lines for each engine and the generator . At least once every 30
days, close the seawater seacocks, then open and clean the strainers . Refer to Section 9:
Hatches and/or Engine Room for the exact
location of the strainers .
Inspect the strainers more frequently if the yacht is operated in dirty waters or areas with a high degree of aquatic vegetation . A
clogged strainer restricts the intake of seawater which can cause the affected engine or the generator to overheat .
ThRU-hULL VALVES
Inspect the thru-hull valves on a monthly basis . Items to inspect are as follows:
Make sure the connections between the hose and the valve are tight . •
Look for water leaks around the area where the valve and hull meet . •
Every 30 days, open and close each valve two or three times . Turning, guards against the valve seizing in the open or closed •
position .
Make sure the valve handle is securely fastened . Tighten any loose handles . Refer to Section 9:
• Thru-Hull Fittings for the
location of the thru-hull valves .
PROPELLER ShAFT SEALS
The propeller shaft extends through a shaft seal which is a watertight fitting . Check the shaft seal every month for leakage; contact
your Marquis Dealer if signs of leakage are found .
DaNgEr
kEEp OUt OF thE EnginE ROOm WhiLE OnE OR bOth EnginES ARE OpERAting. thE EnginE ROOm cOntAinS mOv-
ing, hOt mAchinERy. chEck thAt thE EnginES ARE OFF bEFORE inSpEcting thE pROpELLER ShAFt SEALS.
PROPS
Inspect the props often . Keep a swim mask in the yacht to inspect the props while swimming . Out-of-balance or damaged props can
diminish the yacht’s performance by reducing speed, causing steering problems, and creating vibrations . Vibrations can lead to drive
train damage .
Have the propellers balanced by an established propeller repair shop at least once a year . Repair or replace damaged props .
DaNgEr
WEAR gLOvES WhEn hAnDLing thE pROpELLER. thE pROpELLER bLADES ARE ShARp.