33
Yoder YS 640
Igniter
When inspecting the firebox assembly, confirm that the igniter assembly, tube and
igniter rod are free of ash or other debris. Periodically check the four set screws that
secure the igniter rod into the tube. (See FIG 31). Verify that the igniter rod is centered
in the tube and that the tip of the igniter rod is extended approximately 1/8” out from
the igniter tube.
Extending 1/8”
out of igniter tube.
Fan Cooled Hopper Assembly
Always disconnect the power to the grill before
performing any service
1. Remove any debris from the combustion air fan intake. Use compressed air to re-
move dust and debris from both fans.
2. Inspect and clean the pellet hopper area. The interior hopper surface can be wiped
down using warm water and detergent. To protect the surface and promote smooth
pellet feeding, coat the surface with car wax.
3. Inspect the metal auger area and remove any debris or sawdust that may have built
up.
4. Using a 5/16” socket you can remove the 11 screws securing the end panel to the
hopper assembly (See FIG 32). This will allow you to perform the following:
• Check and clean any debris within the hopper housing.
• Check and clean any debris in the fan blades or housing.
• Check and clean any debris from the auger motor.
• Visually inspect the wiring harnesses and terminal connections.
5. Upon inspection (and any required maintenance) replace all screws. Hand start each
screw to ensure proper threading.
FIG 31
