
4
User’s Handbook, TSL 4230, Issue 4
31
4016-E61TRS
How to check the air cleaner restriction indicator
1 Examine the middle section of the restriction indicator (A1). It will remain clear while the air cleaner is in
serviceable condition.
2 When the filter reaches its contamination limit the restriction indicator will sense the change in manifold
pressure and the middle section will change to red.
3 At this point the air filter must be changed, see "How to change the air filter element and clean the gas mixer"
on page 32.
4 When the air filter has been changed reset the indicator by pressing the button (A2).
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