Care And Maintenance - O.S. engine MAX-21XM Owner's Instruction Manual

CARE AND MAINTENANCE

To ensure that you obtain long life and peak performance
from your engine, observe the follow-ing.
1
As previously observed, foreign matter in the fuel can
cause problems. Therefore:
rinse out the fuel tank with methanol or fuel before installing
it.
fit a fuel filter to the fuel delivery tube between tank and
carburettor.
fit a fuel filter to the outlet of your squeeze bottle, or to the
pump inlet if you use a manual or electric pump.
do not leave your fuel container open need-lessly.
O.S. 'Super-Filters' (large and small) are available, as op-
tional extras,to deal with this problem. One of these filters, fit-
ted to the outlet tube inside your refuelling container, will pre-
vent the entry of foreign material into the fuel tank.
2
Do not forget to clean the filters regularly to remove dirt
and lint that accumulate on the filter screens.
Also, clean the carburettor itself occasionally.
3
At the end of each operating session, drain out any fuel
that may remain in the fuel tank. Afterwards, energize the
glowplug and try to restart the engine, to burn off any fuel
that may remain inside the engine. Repeat this procedure
until the engine fails to fire. Leaving fuel residues within
the engine can result in difficult starting after a period of
storage. It may also cause corrosion.
To reduce such risks, it is helpful to inject some corrosion
inhibiting oil into the engine's air intake.
Rotate the engine many times to distribute the oil to all the
working parts.
4
Drain the water remaining in the water cooling head, and
wash out with methanol, then inject corrosion-inhibiting or
moisture-displacing oil.
5
When cleaning the exterior of the engine, use methanol or
kerosene. Do not use gasoline or any solvent that might
damage the silicone fuel tubing or any plastic parts of the
boat hull.
6
When the engine is not in use remove the glowplug and
rinse out the interior with kerosene (not gasoline), by
rotating the crankshaft. Shake out residue, then inject light
machine-oil through the plug hole again rotating the shaft
to distribute the protective oil to all working parts.
7
In the event of water having entered the cylinder,
crankcase, etc., refer to the procedures recommended in
the footnote to p.11.
8
Avoid unnecessary disassembly of your engine, but if
attention to the 21XM's flexible drive shaft appears
necessary, please refer to p.8.
14