Henny Penny 500 Service Manual page 101

Be sure capillary bulb of high limit is located behind
capillary bulb of thermostat. Both capillary bulbs
and bulb holders should be positioned as not to
interfere with basket or when cleaning the frypot
wall, or damage to capillary tube could result.
14. With excess capillary line pulled out, tighten smaller
nut.
15. Replace front panel.
16. Refill with shortening.