Troy-Bilt 78 Benutzerhandbuch

Generally air filters come in two different types, a 

pleated-paper element or foam. A combination of the two 
are used on the MTD engine.

•

Air filters used on the MTD engine are designed 
to prevent particles larger than 3-5 micron from 
passing through into the engine.

•

The filter should be checked on a regular basis 
possibly several times in a season. 

NOTE: Never use compressed air on a paper air fil-

ter. Compressed air will remove the tiny 
fibers that are used to catch the dirt in the 
air. Without these fibers the filter is useless.

NOTE: Refer to Chapter 1: Introduction for the 

maintenance interval and cleaning instruc-
tions for the air filter. 

To replace an air filter:

1.

Wipe down the air filter housing to prevent any 
debris from getting into the engine.

2.

Unthread the two wing nuts in the air filter cover. 
See Figure 3.4.

NOTE: The wing nuts are part of the filter housing 

and do not come off.

3.

Swing the housing away from the fuel tank.              
See Figure 3.5.

4.

Remove the air filter assembly.

Foam pre-filter

Paper-pleated element

Wings nuts

Air filter 

housing

Air filter assembly

For Parts Call 606-678-9623 or 606-561-4983

www.mymowerparts.com