A durable repair to an exhaust system
which effectively prevents leaks is acceptable providing the system
is structurally sound.
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1. Examine the condition of the whole exhaust system including the
silencers and mountings, for security, deterioration and completeness.
2. With the engine running assess the effectiveness of the silencer
in reducing as far as is reasonable the noise caused by the exhaust
from the engine.
3. check the silencer(s) on all machines for unacceptable markings
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1.
a. Any part of the exhaust system missing or excessively deteriorated
b. A leak in an exhaust system which causes excessive noise to be
emitted
c. An exhaust system mounting missing or one which is in such a
condition that it does not fully support the exhaust system.
2. A silencer which is in such a condition or is of such a type
that the noise emitted is clearly in excess of that which would
be produced by a similar machine fitted with a standard silencer
in average condition.
3. A silencer marked 'NOT FOR ROAD USE', TRACK USE ONLY' or similar
words.
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