Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Tips to find your model number
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
NEC
Office

Model # 3550 Official NEC sheet feeder plus printer

Here are the diagrams and repair parts for Official NEC 3550 sheet feeder plus printer, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 433 parts  |
Belt M M-175-9.5 808-805077-003-A
#44

Roller feed assembly diagram

Belt m m-175-9.5

Part #808-805077-003-A

The manufacturer no longer makes this part, and there's no substitute part

Pulley Collar 136-753450-A
#43

Front inserter diagram

Pulley collar

Part #136-753450-A

The manufacturer no longer makes this part, and there's no substitute part

Left Hopper Pocket 136-781218-002-A
#12

Sheet feeder -- model 4123 diagram

Left hopper pocket

Part #136-781218-002-A

The manufacturer no longer makes this part, and there's no substitute part

Rear Cover 136-741638-A
#17

Tractor unit assembly diagram

Rear cover

Part #136-741638-A

The manufacturer no longer makes this part, and there's no substitute part

Arm Ass'y, Tension (l) 136-760127-001-A
#61

Model 4103 sheet feeder plus -- rev. a6 and higher diagram

Arm ass'y, tension (l)

Part #136-760127-001-A

The manufacturer no longer makes this part, and there's no substitute part

Shear Pin 803-010006-210-A
#6

Paper guide assembly diagram

Shear pin

Part #803-010006-210-A

The manufacturer no longer makes this part, and there's no substitute part

Boss 136-743153-A
#33

Front inserter diagram

Boss

Part #136-743153-A

The manufacturer no longer makes this part, and there's no substitute part

Piece, Hopper Release (r) 136-745944-003-A
Piece, hopper release (r)

Part #136-745944-003-A

The manufacturer no longer makes this part, and there's no substitute part

Stay, Front 136-745982-A
#23

Dual bin adapter -- model 4104 diagram

Stay, front

Part #136-745982-A

The manufacturer no longer makes this part, and there's no substitute part

Gear 23 136-743120-A
#5

Paper guide assembly diagram

Gear 23

Part #136-743120-A

The manufacturer no longer makes this part, and there's no substitute part

Symptoms for top-mount refrigerators

Why is there water in the bottom of the fridge under vegetable drawers?

Main causes: frozen or clogged defrost drain tube, cracked water system tubing…

Read more

Repair guides for top-mount refrigerators

How to replace a refrigerator water valve

How to replace a refrigerator water valve

Replace the water valve that feeds water to the ice maker and water dispenser if it no longer controls the flow of water…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace the evaporator fan motor in a top-freezer refrigerator

How to replace the evaporator fan motor in a top-freezer refrigerator

The evaporator fan motor blows air across the evaporator coils and through the refrigerator cabinet for cooling. Replace…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace the compressor start relay in a top-freezer refrigerator

How to replace the compressor start relay in a top-freezer refrigerator

The compressor start relay starts the compressor and shuts it off if the motor overheats. Replace the start relay if it'…

Read more
Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your office

Office and smart products articles | Sears PartsDirect

View all
How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

Read more
Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

Read more
What does the Amazon Fire Stick Lite do?

What does the Amazon Fire Stick Lite do?

Learn what the Amazon Fire Stick Lite video streaming device does.…

Read more

Parts & More