Get free shipping on your order, with any water filter subscription. Find my filter

Open Hamburger Menu
Sears Parts Direct
Tips to find your model number

Makita AF503 pneumatic brad nailer Parts

Here are the diagrams and repair parts for Makita AF503 pneumatic brad nailer, as well as links to manuals and error code tables, if available.

Makita AF503 pneumatic brad nailer
By Schematic
SELECT DIAGRAM
?

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

Browse Parts for AF503 Power Tools

  • Trigger A for Makita AF503 - Part A250-04

    Pneumatic brad nailer, 18 gauge diagram

    Trigger A

    Part #A250-04

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

  • Exhaust Valve Set for Makita AF503 - Part A346-06

    Pneumatic brad nailer, 18 gauge diagram

    Exhaust Valve Set

    Part #A346-06

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

  • Release Catch (b) for Makita AF503 - Part A280-47

    Pneumatic brad nailer, 18 gauge diagram

    Release Catch (b)

    Part #A280-47

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

  • Compression Spring for Makita AF503 - Part A210-61

    Pneumatic brad nailer, 18 gauge diagram

    Compression Spring

    Part #A210-61

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

  • Screw 4-25 for Makita AF503 - Part A203-27

    Pneumatic brad nailer, 18 gauge diagram

    Screw 4-25

    Part #A203-27

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

  • Lower Mag. for Makita AF503 - Part A271-96

    Pneumatic brad nailer, 18 gauge diagram

    Lower Mag.

    Part #A271-96

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

  • Exhaust Valve Assembly for Makita AF503 - Part B346-06

    Pneumatic brad nailer, 18 gauge diagram

    Exhaust Valve Assembly

    Part #B346-06

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

  • Head Valve Piston for Makita AF503 - Part A340-06

    Pneumatic brad nailer, 18 gauge diagram

    Head Valve Piston

    Part #A340-06

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

  • O-ring 22-1.5 for Makita AF503 - Part A311-OQ

    Pneumatic brad nailer, 18 gauge diagram

    O-ring 22-1.5

    Part #A311-OQ

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

  • Remote Housing for Makita AF503 - Part A251-22

    Pneumatic brad nailer, 18 gauge diagram

    Remote Housing

    Part #A251-22

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

Repair guides for front-engine lawn tractors

How to replace a blade clutch cable on a riding lawn mower

How to replace a blade clutch cable on a riding lawn mower

If the blades don't spin on your riding mower when you shift the lever, the blade clutch cable could be broken. Here’s h…

Repair time and Difficulty

 30 minutes or less
How to replace a ground drive belt on a riding lawn mower

How to replace a ground drive belt on a riding lawn mower

Replace the ground drive belt if it's broken or too worn to spin the transaxle pulley.…

Repair time and Difficulty

 45 minutes or less
How to replace a riding lawn mower blade drive belt

How to replace a riding lawn mower blade drive belt

Replace the blade drive belt if it's broken or won't spin the cutting blades because of wear.…

Repair time and Difficulty

 45 minutes or less

Articles and videos for front-engine lawn tractors

Should I get an electric riding mower?

Should I get an electric riding mower?

Get help deciding whether to make the switch to a battery-powered riding mower…

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.…

How to tell if a fuse is blown

How to tell if a fuse is blown

Learn how to tell whether a fuse is blown…

Parts & More

Bottom-Mount Refrigerator
Dishwasher
Dryer
Electric Range
Front-Engine Lawn Tractor
Gas Snowblower
Lawn Sweeper
Parts
Power Drill
Side-By-Side Refrigerator
Tool Storage
Washer
Weight System
Wine & Beverage Cooler