MASSEY FERGUSON MF 135 - Air Filter Servicing

distributor is not in good working condition.
The distributor should be checked every 100
hours of operation and serviced as follows:
Check the high tension wiring. Frayed
or corroded wire tips, loose, dirty or
greasy connections and terminals will build
up a resistance to proper current flow,
therefore, causing poor performance.
Breaker Points
e The breaker points are a critical part
of the ignition system. Check the points for
signs of wear, pitting and burning.
Points with an overall gray color and a
slight roughness or pitting may be dressed
with a clean, fine-cut contact file. There is
no necessity to remove all roughness, or
dress the points smooth. Just remove any
scale and dirt.
NOTE: Do not use emery cloth to
clean the points, as particles can
become embedded and cause arch-
ing and rapid burning of the points .
Burned or badly pitted points should be
replaced with a new set of points.
NOTE: New sets of points and con-
denser are available through your
MF Dealer.
Check and reset the breaker points. The
procedure is the same for old or new points.
Turn the engine over until the high point
of the cam is contacting the segment of the
breaker point arm with the points open the
full amount.
Loosen screw, adjust the gap to 0.021
irtch, and tighten screw making sure points
are aligned and making full contact.
Ignition Timing
e It is recommended that the ignition
system be timed with a timing light by your
authorized MF Dealer. This provides an ac-
curate method of checking the distributor au-
tomatic advance mechanism.
The gasoline engine is timed at 26° be-
fore top dead center with the engine running
at 2250 rpm (no load).
Air Filter (See Fig. 61)
The air filter is of the dry-element type.
It is essential that the filter be kept clean
and free from any type of restriction. Tan-
gential air flow through the air filter, swirls
the air so that the coarse particles of foreign
material are spun off and collected in a res-
ervoir and are then expelled through an un-
loader valve attached to the bottom of the air
filter assembly.
Fig. 61 - Dual Air Cleaner
The outer elements should be replaced
yearly, or after three washings, whichever
comes first. Replace inner element yearly.
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Important Air Cleaner
Pre cautions
1. Do not loosen or remove
the air cleaner element with the
engine running. NEVER OPERATE
THE ENGINE WITHOUT THE FIL-
TER ELEMENT INSTALLED IN
THE AIR CLEANER.
2. The element is of the dry-
type . Do not oil element. Also,
never wash element in gasoline,
fuel oil or sol vents.
3. With the element in place,
make sure the knurled knob is fully
tightened "finger tight".