Craftsman CMXGWAS020737 gas power washer Parts

Use clean, fresh, unleaded gasoline (87 octane/87 AKI minimum) in your Craftsman CMXGWAS020737 gas power washer. Fresh fuel helps the engine start easier, run smoother, and reduces carburetor and fuel-system problems during storage.

Fuel type and what to avoid

• Use unleaded gasoline, 87 AKI (87 octane) or higher
• Buy fuel you will use within about 30 days
• Avoid old fuel that smells sour or looks dark
• Avoid mixing oil into the gas (this is a 4-cycle style setup on most units)
• Avoid overfilling; leave room for fuel expansion

Quick fill checklist (safe, no-mess)

1. Shut the engine off and let it cool.
2. Move the unit to a well-ventilated area.
3. Clean around the fuel cap so dirt does not fall into the tank.
4. Fill slowly and stop below the top of the filler neck.
5. Tighten the cap and wipe up any spills before starting.

Common fuel choices

Fuel option	Works for CMXGWAS020737?	Best for
Regular unleaded (87 AKI)	Yes	Everyday use
Mid-grade/premium (89 to 93 AKI)	Yes	Hot weather, heavy loads (not required)
Ethanol-free (if available)	Yes	Storage and fewer fuel issues

Why it matters

Using the right gasoline helps prevent hard starting, surging, and loss of pressure caused by fuel varnish and clogged carburetor passages. If you are also troubleshooting low pressure, a worn or leaking hose can contribute; the pressure washer water hose 84006753 is a model-matched replacement option.

You can order replacement parts for your Craftsman CMXGWAS020737 from the parts list for this model, or search by model number on Sears PartsDirect.

Last updated: February 2026

A good PSI for a gas pressure washer depends on what you’re cleaning. For most homeowner jobs with your Craftsman CMXGWAS020737 (siding, decks, patios, driveways), we recommend targeting about 2,000 to 3,000 PSI because it cleans effectively while staying controllable on common surfaces.

Recommended PSI by job type

Use PSI as your “cutting power” guide, then fine-tune with nozzle choice, spray distance, and detergent.

• 1,500 to 2,000 PSI: cars, outdoor furniture, grills, softer woods (use extra care)
• 2,000 to 3,000 PSI: decks, fences, siding, most concrete and pavers
• 3,000 to 4,000+ PSI: heavy concrete staining, paint prep, stubborn buildup (higher risk of surface damage)

Quick reference table

Cleaning task	Good PSI range	Notes
Vehicle washing	1,500 to 2,000	Use a wider fan tip and keep distance
Deck or fence	2,000 to 2,800	Too much PSI can fur wood
Siding	2,000 to 3,000	Avoid forcing water behind panels
Driveway/patio	2,500 to 3,200	Use steady passes for even results
Paint stripping	3,000 to 4,000+	Test a small area first

PSI is only half the story (PSI vs GPM)

Two pressure washers with the same PSI can clean very differently. GPM (gallons per minute) controls how fast you rinse away dirt. In real-world cleaning, a slightly lower PSI with higher GPM often finishes faster than high PSI with low flow.

How to get better cleaning without “cranking up” PSI

These steps improve results and reduce damage risk:

• Start with a 25° or 40° fan tip; avoid a 0° tip for general cleaning
• Keep the spray wand moving; don’t dwell in one spot
• Increase cleaning power by moving closer slowly, not by starting close
• Pre-soak with detergent when needed, then rinse top to bottom
• Make sure your supply hose is unrestricted; a kinked hose can cause poor performance
• Replace a worn or leaking hose so you maintain steady pressure (see pressure washer water hose 84006753)

Why it matters

Choosing the right PSI helps you clean faster while preventing common problems like etched concrete, damaged wood fibers, and water intrusion behind siding.

If you’re shopping for replacement parts or accessories for the CMXGWAS020737, we list model-matched items on the parts list for this model, and you can also search by model number on Sears PartsDirect.

Last updated: February 2026

Yes. For washing a car, 3400 PSI is more pressure than you need and it increases the risk of damaging clear coat, forcing water past seals, or etching trim. With a Craftsman CMXGWAS020737 gas power washer, we recommend using the widest spray pattern and keeping pressure low at the surface.

Safe PSI and setup for car washing

Most car-wash results come from the right nozzle, distance, and technique, not maximum PSI.

• Target range at the paint: about 1200 to 2000 PSI
• Use a 40-degree (white) nozzle or a dedicated low-pressure soap nozzle
• Keep the tip 12 to 24 inches from the paint; increase distance on edges and decals
• Avoid spraying directly into door seals, window trim, emblems, and vents
• Test on a small lower panel first, then adjust distance and angle

Quick nozzle and risk guide

Nozzle / pattern	Typical use on a car	Risk level
40-degree (wide fan)	Rinse and gentle cleaning	Low
25-degree (medium fan)	Wheels and heavy grime (carefully)	Medium
15-degree (narrow fan)	Not recommended on paint	High
0-degree (pencil jet)	Never on a car	Very high

How to “turn down” a 3400 PSI pressure washer

Even if your washer is rated around 3400 PSI, you can make it car-safe by reducing effective pressure at the surface.

• Choose the widest fan nozzle you have
• Back away until the spray feels like a strong rinse, not a cutting jet
• Use soap first, then rinse; do not rely on pressure to remove stuck grit
• If your spray is pulsing or surging, check for kinks, air leaks, or a restricted supply hose
• Replace a worn or leaking supply hose so the pump stays properly fed (see pressure washer water hose 84006753)

Why it matters

Automotive paint and clear coat are thin compared to concrete or siding. Too much pressure, too close, or the wrong nozzle can cause permanent marks, lift decals, and drive water into places it should not go.

Ordering the right parts

We list model-matched replacement parts for Craftsman CMXGWAS020737 on this page (including hoses and decals). For additional parts lookups by model number, use Sears PartsDirect.

Last updated: February 2026