Yoder Smokers YS640 Operation Manual page 18

3. Remove the burn grate from the fi rebox. Inspect and clean thoroughly. Make certain that the
combustion holes in the burn grate and the igniter tube in the fi rebox are free of debris or ash build up.
Visually inspect the air way between the combustion fan and the fi rebox to be certain that it is free and
clear of ash and debris. (A shop vacuum works well for ash and debris removal.)
FIREBOX
MOUNT
4. Inspect for and remove any grease build up on the bottom of the cooking chamber.
5. Inspect the silicone seal around the fi rebox, paying particular attention to the seal above the fi rebox
at the hopper wall. It will be necessary from time to time to reapply high heat silicone such as Permatex
81878 in this area which ensures proper combustion and grill performance.
6. Reinstall the burn grate. Begin by resting the right hand side of the burn grate on the fi rebox and then
pressing down on the left hand side of the burn grate until fully seated. When the burn grate is properly
seated it rests fi rmly on the right hand side of the fi rebox and fi ts close to the hopper wall. Finally, check
that the igniter assembly is centered in the respective hole in the burn grate.
7. Reinstall the heat diff user/drip plate. The heat diff user plate attaches to the hook on the auger shield
FIREBOX
BURN GRATE
IGNITER
END IN
OPENING
RIGHT SIDE
FIG 11
BURN GRATE
FIG 12
17
ITEM # PART #
1 A91425 3 INCH CASTER WHEEL, 3/8-16
2 1420LNN NUT, NYLOCK, 1/4-20
3 3816WHN NUT, WHIZ, 3/8-16
4 1420X58WHB BOLT, WHIZ, 1/4-20 X 5/8" LONG
5 701-102-02 PIN
6 90398 AXLE
7 10X34HHSDS SCREW, HEX HEAD, SELF DRILLING, 10 X 3/4
8 90172LFP BOTTOM SHELF
9 W90786 RIGHT FRONT LEG
10 W90784 LEFT FRONT LEG
11 24252 WHEEL
12 90166LFP SKIRT, LONG, UNDERCARRIAGE
13 90165LFP SKIRT, SHORT, UNDERCARRIAGE WITH LOGO
14 W90782 REAR LEG
640 CART
DESCRIPTION
42
QTY.
2
16
2
16
2
2
16
1
1
1
2
2
2
2