Collection: Graco LineLazer 3400 Parts

Graco produced the LineLazer 3400 in two generations. Many parts differ significantly — verify your generation before ordering.

The Graco serial number is on the frame near the engine mount. If unsure, text a photo of the ID plate to (833) 670-5756 for same-day identification.

Graco 3400 Overview Video

Our walkthrough of the LineLazer 3400 line striper — features, use cases, and what to look for when buying used.

Common Repair Categories

• Pump service — packings, piston rods, seats, rebuild kits
• Filters & strainers — inlet strainer, gun filters
• Hoses & fittings — 50-ft airless hose, whip hose, quick-disconnects
• Guns & tips — LineLazer guns, HD tips, tip guards
• Wheels & drive — front caster, rear wheels, wheel bearings, tie-rods
• Engine & throttle — Honda GX160 parts, throttle cables, spark plugs
• Seals & gaskets — pressure adjustment, o-rings, packing kits

Use the filter menu above the product grid to narrow by category.

Why Buy Genuine OEM from Pittsburgh Spray Equipment

• Genuine OEM parts shipped from Graco
• Same-day part ID help — text a photo of your machine's ID plate to (833) 670-5756
• Financing available on machines over $1,000
• Ships direct from stocked Pittsburgh warehouse

FAQ

My LineLazer 3400 won't prime — where do I start?
Nine times out of ten it's the inlet strainer clogged with dried paint. Pull it, clean or replace, and re-prime. If the pump still won't build pressure, next check the pump packings (rebuild kit 244-194 for 1st gen). The pressure-adjustment knob has a bleed valve — it must be closed.

Are 1st gen and 2nd gen LineLazer 3400 parts interchangeable?
Some are: hoses, LineLazer guns, HD tips, wheels, and Honda GX160 engine parts fit both. Pump internals do NOT interchange — 1st gen uses the Endurance pump (246428), 2nd gen uses the Endurance II (17C718). Frame parts and gun rods also differ.

What Honda engine oil does the LineLazer 3400 take?
Honda GX160 spec: SAE 10W-30 or 5W-30, API service SJ or later. Capacity about 0.6 quart. Honda recommends oil changes every 50 hours of run time.

How do I identify my LineLazer 3400 serial number and generation?
Two labels: one on the frame near the engine mount (Graco serial), the second on the engine itself (Honda serial). Use the Graco model number to determine generation: 248861 = 1st generation, 25M224 = 2nd generation.