YANMAR AIR FILTER SERVICE
INTERVAL - 10 T0 50 HOURS
TIME REQUIRED - 10 MINUTES
Few things can destroy your engine as fast as a faulty
air cleaner. One might think that even though the filter is dirty-
no damage is hapening because contamination is still not getting
through. WRONG! As the filter clogs up with dirt and debris, the
vacuum on the filer increases. This pulls dirt in from tiny openings
that, without the added pressure, would be too small to allow dirt
to pass. The dirtier the filter gets, the more suction there is
until the paper element finally gives out and begins to tear away.
Your tractor will also lose up to 80% of its power as the filter
clogs. It is recommended that you service your air filter
every 10 to 50 hours depending on your environment or as directed
in your owners manual. It is also recommended that you replace your
filter with a new one every seasons or after the 5th cleaning. Yanmar
uses two types of air cleaners on their tractors. One that is a
flat round filter and one like the picture below. Both are serviced
in the same way.  What
you will need:
 To
clean your filter you will need to remove the air filter cover by
loosening a wing nut or opening a couple latches on the end cap.
 You
will then need to remove the filter by loosening the nut that holds
the filter in. Make sure to wipe (not blow) out all o the
dirt in the bottom of the air filter housing after the filter is
removed. Blowing after the filter is removed will force dirt directly
into the engine. Check the inside of your filter for any signs of
dirt. A dirty spot on the inside of the filter usually means that
the filter is leaking and needs to be replaced. Use a flashlight
on the outside while looking through the inside to help find any
holes.
 Inspect
the gasket portion of the filter. Any damage here can leak dirt
into the engine. Replace if damage is found. Using compressed air
at about 35-50 psi; blow from the inside out. You may need
to tap the filter on the ground a few times to loosen up the dirt
in the filter before it will blow out easily. Using compressed
air at a higher psi may damage the filter paper and allow dirt to
get into your engine!
 Most
filter lids will have a two piece cap that is designed to trap dirt.
You will need to either separate this cap and clean it or just be
sure that you have gotten all of the dirt our of it.
Replace filter in reverse order.
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