Walk-Behind Mower

Model # 3901 Official Craftsman lawn mower

Here are the diagrams and repair parts for Official Craftsman 3901 lawn mower, as well as links to manuals and error code tables, if available.

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

Browse Parts for
3901 Lawn Mower
Knob 12681-6167-0
#130

Recoil starter diagram

Knob

Part #12681-6167-0

Replaced by #31-904

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Manufacturer substitution
This part replaces 12681-6167-0. Substitute parts can look different from the original.
This item is not returnable
In Stock
O-ring 04811-0018-0
#40

Oil filler pipe diagram

O-ring

Part #04811-0018-0

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

Float 12681-4472-0
#310

Carburetor (component parts) diagram

Float

Part #12681-4472-0

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

Screw 13941-4434-0
Screw

Part #13941-4434-0

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

Stopper 12191-5746-0
#290

Governor diagram

Stopper

Part #12191-5746-0

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

Exhaust Valve 12681-1312-0
#110

Crankcase cover diagram

Exhaust valve

Part #12681-1312-0

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

Pin 05511-5021-5
Pin

Part #05511-5021-5

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

Label 12681-8852-0
#130

Bonnet - spark plug diagram

Label

Part #12681-8852-0

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

Guard 65621-2115-0
#60A

Cutter housing diagram

Guard

Part #65621-2115-0

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

Insulator 12681-4615-0
#180

Air cleaner - muffler - carburetor diagram

Insulator

Part #12681-4615-0

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

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