Evinrude 4906B 4HP 1969 Owner's Manual page 49

3-8 POWERHEAD
Reed stops centered
Reed Stops
If the reed stops have become distorted,
the most effective
replace the stop instead
tempt at adjustment.
Reed to Base Plate Check
The specified clearance
the base plate, when the reed is at rest, is
0.010" (0.254- rnrn) at the tip of the reed.
An al tern ate method of the checking the
reed clearance is to hold the reed up t;; the
sunlight and look through
Some air space should be visible, but not a
great amount. If in doubt, check the reed at
the tip with a feeler gauge.
clearance should not exceed
mrn),
Using a feeler gauge
between the reed tip and the reed plate.
over the reeds.
corrective action is to
of making an at-
of the reed from
the back side.
The maximum
0.010" (0.254
to measure the clearance
Close view showing the dimple
reed
The leaves must
over
centered the openings for proper operation.
The reeds must
an attempt to correct
action would cause the reed to flex in the
opposite direction and the reed would break
in a very short time.
REED VALVE ADJUSTMENT
In many instances,
the reed plate in such a manner to cover the
openings in the plate.
accompanying illustration,
manufactured into the face of the plate.
The leaves of the reed should be centered
this identation for proper operation.
reed is being replaced,
reed stops should be replaced as a set.
V-Type Reed Boxes
As the name implies,
are shaped in a "V" with a set of reeds and
V-type reed box installed
on the reed plate.
straddle the dimple and be
NEVER
be turned over in
a problem. Such
the reed is placed on
As shown in the
a small indent is
If the
both reeds AND the
these reed boxes
9.5
on the hp engines.
on