O.S. Engines 18TZ(S)-T - Manual (Page 53)

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This kind of damage is not covered under the warrenty.
• If the flywheel can't be tightened onto the engine without it trying
to turn over, grip the drive washer in a pair of large adjustable
pliers, like Channel Locks™, with the drive washer protected
under several layers cloth. You could also try a strap wrench.
•If you feel more adventurous, you can remove the rear cover of
the engine and insert a piece of wooden dowel stock or plastic
rod to keep the crankshaft from turning. Don't put anything into
the engine that will hit the piston.
KEEP AWAY FROM
SILICONE SEAL AND
THREAD STICKERS
Silicone sealers usually have a smell like vinegar when they're
curing. Vinegar is mostly acetic acid and that causes corrosion.
•The inside of an engine has two kinds of metal in it...
aluminum for most of the parts and steel for the crankshaft
and bearings.
•Two different kinds of metal will start to corrode if they have
some kind of electrolyte between them and a tiny bit of acid
will do the job.
• Aluminum corrosion can cause the entire inside of the
engine to turn a dark grey or nearly black color. Corroded
steel is rust. See above about rust.
KEEP IT DRY
While it sounds obvious, keeping water out of your engine isnt as
easy as it sounds. Sure, you can dry it out when you've run
through some mud or puddles, but how about condensation?
•Changes in temperature can cause moisture in the air to
condense inside the engine. This can happen in the winter
and summer, so keep your model inside the house, not in the
garage.
•Keeping it inside the house also gives you good reason to
keep it clean just try to explain oil spots on the carpet when
your engine is dripping oil from a just-finished running
session.
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