4A-16 90-13645--2 495POWERHEAD
Thermostat
Wash thermostat with clean water. Using a thermo-
stat tester, similar to the one shown, test thermostat
as follows:
S Open thermostat valve, then insert a thread be-
tween valve and thermostat body. Allow valve to
close against thread.
S Suspend thermostat(fromthread)andthermome-
ter inside tester so that neither touches the con-
tainer. Bottom of thermometer must be even with
bottom of thermostat to obtain correct thermostat
opening.
S Fill thermostat tester with water to cover
thermostat.
S Plug tester into electrical outlet.
S Observe temperature at which thermostat begins
to open. Thermostat will drop off thread when it
starts to open. Thermostat must begin to open
when temperaturereaches5_ F(3_ C)abovedes-
ignated stamping on bottom of thermostat.
S Continue to heat water until thermostat is com-
pletely open.
S Unplug tester unit.
S Replace thermostat, if it fails to open at the speci-
fied temperature, or if it does not fully open.
51087
Reed Blocks
NOTE: Do not disassemble reed blockunlessneces-
sary. It may be necessary to apply heat to bolt (e) to
soften LoctiteR before removal.
19331
a
b
c
d
e
a - Reed Block
b - Reed (3 Sets)
c - Retaining Washer
d - Tab Washer
e - Bolt
IMPORTANT: Do not “flop” (reverse) the reed for
additional use - replace reed when necessary.
BACKSIDE - REED BLOCK ASSEMBLED
19332
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