Yoder Smokers YS 640, Operation Manual

33

Fuse Replacement

If there is no display on the power switch with the switch in the “on” position, check the power source 

to verify the GFCI hasn’t tripped. If the power source is working, check the Yoder fuse. The fuse holder 

is located on the left front side of the pellet hopper below the control panel (on the standard backyard 
carts). (see 

FIG 33

). * On the competition cart models the fuse holder is located on hopper end panel.

Verify that the power switch is in the “o

ff

 ” position and disconnect the Yoder from its power source. Insert 

a small 

fl

 at blade screwdriver into the slot on the top of the fuse container and twist it counterclockwise 

to open. If the fuse is blown, replace it with the supplied replacement fuse. (The fuse is a 1.6-ampere 

quick-blow fuse.) Reconnect the power and turn the Yoder on. If the fuse blows again, contact us for 

technical support.

Storing Your Grill

Cover your Yoder Smoker to protect it from the weather and to keep the pellets dry. If storing your cooker 

inside, be sure the smoker is cool to the touch before moving it inside. Inspect the hopper and cooking 

chamber for any remaining embers before storing the unit.

FIG 33

26

Variable Displacement Damper

The YS640 is 

fi

 tted with a variable displacement damper for managing heat distribution in the pit from the 

fi

 rebox to the chimney end. (See 

FIG 24

)

When the YS640 is set up with the heat di

ff

 user in place the Variable Displacement Damper allows the pit 

master additional temperature control at the grate level. With the damper pushed all the way in, the left 

half of the grill will run hotter (FIG 25). When positioned all the way open, the right side of the grill will run 

hotter. With the damper pushed in about 5 inches, the grate surface will cook evenly, creating an ideal 

environment for slow cooking.

With the direct grill kit in place, it is recommended that the damper is completely open to develop heat 

across the entire cooking surface.

• 

By pushing the damper all the way in (toward the 

fi

 rebox) heat is 

concentrated for grilling on the left side of the Yoder. (See 

FIG 25

)

DAMPER

HANDLE

CHIMNEY

STACK

DAMPER AT MID-LOCATION

DAMPER AT MID-LOCATION

FIREBOX

FIG 24

EXAMPLE:   DAMPER ALL THE WAY IN

(Top View)

FIREBOX

DAMPER POSITION

HANDLE

HEAT 

CONCENTRATION

FIG 25