Hunter Marine sailing yacht Owner'S Manual Download

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ENGINE, TRANSMISSION & DRIVETRAIN

PAGE

ENGINE

Follow the fuel and lubrication requirements
in the Engine Manual. Check the engine oil
level before and after operation and use a
quality motor oil (refer to Engine Manual).
Be certain the proper amount of oils is in the
crankcase at all times

Engine Alignment:

the engine should be

aligned  by  experienced  marine  service
personnel.  Final  alignment  should  be  done
after launching, with all normal gear aboard.
A description of the procedure follows:

The  coupling  flanges  must  come  together
evenly at all points, a feeler gauge is used to
check  the  gap.  If  adjustment  is  necessary,
the  engine  is  tilted  up  or  down  and/or  side-
to-side until the flanges meet evenly. Severe
vibration  will  result  from  misalignment  and
can  cause  strut  bearing  and  shaft  damage.
Alignment  should  be  checked  again  after
several  weeks  of  use.    Routine  checks  of
coupling bolts are a must to ensure they are
tight.

Shaft Alignment:

1. Separate the coupling, move the shaft
end back to clear the pilot in the center.

2. Establish the shaft in the center of the
shaft log by raising the shaft until it touches
the top of the log

–

note position

–

lower the

shaft until it touches the bottom of the log

–

note position

–

repeat sideways and locate

shaft  in  the  center;  block  shaft  in  this
position,  using  a  block  of  wood  under  the
shaft packing gland.
3.  Now,  adjust  the  engine  mounts  to  allow
the  pilot  on  the  coupling  halves  to  slip
together  without  moving  shaft  up  down  or
sideways.
4.  Adjust  the  engine  mounts  as  necessary
until  a  .004

”

feeler gauge will not enter

anywhere  along  the  edge  of  the  flange
between the faces.
5.  Tighten  the  locks  on  the  adjustable
mounts
6.  Recheck  coupling  with  feeler,  readjust  if
necessary.
7.  Check  stuffing  box  (allow  to  drip  3  to  5
drops per minute).

Any  questions  or  problems  concerning  the
engine,  please  contact  the  U.S.  distributor,
Mastery  Marine  at  (727)  522-9471,  or  your
local Yanmar service agent.

TRANSMISSION

Follow the lubrication requirements of the
engine manual. The oil level should be

checked immediately after operation.

STUFFING BOX

The stuffing box is held to the stern bearing
by a rubber hose secured with hose clamps.
(See  the  Shaft  and  Propeller  section).  The
clamps should be tight and no water should
leak  from  this  location.  While  underway  a
slight  drip  from  the  stuffing  box  at  the  shaft
exit  is  necessary  (three  to  five  drops  a
minute) and is normal. To adjust, loosen the
locknut,  tighten  the  gland  nut  one-quarter

turn, a retighten the locknut. If excessive
water flow persists after adjustment, replace
the packing with 3/16

”

(or 5mm) square flax

packing and then adjust as above.

NOTE: Some models use a packless
sealing system. Page 56 or Pages 56A, B,
C, reflects the type of stuffing box used
on this model.