Craftsman 917388651 gas walk-behind lawn mower Parts

Hydrostatic transmission repairs are typically a riding-mower cost; the Craftsman 917388651 is a gas walk-behind mower, so it normally does not have a hydrostatic transmission to repair. For hydrostatic-equipped mowers, repair costs commonly range from a few hundred dollars for minor service to $1,300 to $2,500 for a full transmission replacement.

What you are likely dealing with on a walk-behind mower

On a walk-behind mower like model 917388651, “won’t move” or “hard to push” symptoms are usually caused by deck drag, wheel/axle issues, or control/cable problems, not a hydrostatic drive.

Common causes to check first:

• Grass and debris buildup under the deck (can cause drag and loss of power)
• Cutting height set too low for conditions
• Worn, bent, or loose blade causing vibration and poor cut
• Wheel height set unevenly
• Control cable out of adjustment or damaged (if equipped)

For model-specific maintenance and troubleshooting steps, use the 917388651 owner's manual.

Typical hydrostatic transmission cost ranges (riding mowers)

Hydrostatic costs vary most by mower class (residential vs. heavy-duty), whether the unit is serviceable, and labor time.

Repair scenario	Typical parts cost	Typical total (parts + labor)
Fluid service or minor leak fix	$50 to $250	$150 to $600
Pump/motor component repair (when serviceable)	$200 to $800	$500 to $1,500
Full transmission replacement	$700 to $1,300	$1,200 to $2,500

Quick checks before pricing any “drive” repair

These steps help avoid paying for a major repair when the issue is basic maintenance.

• Confirm the mower type: walk-behind vs. riding mower
• Check for deck drag: clean under the deck and verify cutting height
• Inspect the blade and blade adapter for damage
• Verify wheel movement and axle condition
• If your mower uses a control cable, inspect for stretching, kinks, or binding (a common wear item)

If you need a replacement cable for this model, match it by model number and length; the walk-behind lawn mower engine cable 532176556 is a common control-cable part used on this platform.

Why it matters

Hydrostatic transmission replacement is one of the highest-cost mower repairs. Identifying whether you have a hydrostatic drive (usually riding mowers) versus a walk-behind deck or wheel issue prevents unnecessary parts purchases and reduces downtime.

Last updated: January 2026

For your Craftsman 917388651 gas walk-behind lawn mower, use fresh regular unleaded gasoline; in most areas that means E10 (up to 10% ethanol) is the standard, correct choice. Avoid old fuel, and never store gasoline from one mowing season to the next; follow the fuel guidance in the 917388651 owner's manual.

Fuel type and what to avoid

Use fuel that keeps the carburetor clean and starts easily.

• Use fresh regular unleaded from a busy station.
• E10 is OK for typical walk-behind mower engines.
• Avoid stale fuel (a common no-start cause).
• Avoid higher-ethanol blends (often labeled E15, E20, E85).
• Do not mix oil into the gas; this mower uses a 4-cycle engine (oil goes in the crankcase, not the fuel).

Quick checklist before you fill the tank

These steps prevent hard starting and fuel-system problems.

• Shut the engine off and let it cool.
• Fill outdoors, away from flames or sparks.
• Wipe dirt from around the fuel cap before opening.
• Use a clean gas can; replace it if it starts to rust.
• Add only the amount of fuel you will use soon.

Storage and “bad gas” prevention

The manual calls out fuel storage as a key reliability issue.

Situation	What we recommend	Why
Fuel left over after the season	Do not keep it for next season	Old fuel causes starting and running problems
Gas can shows rust or debris	Replace the can	Rust and dirt contaminate fuel
Mower stored indoors	Do not store with gas in the tank	Fumes can reach an ignition source

Why it matters

Correct gasoline helps your Craftsman 917388651 start on the first pulls, run smoothly under load, and reduces carburetor varnish that leads to “won’t start” complaints.

Last updated: January 2026

The model number for this Craftsman gas walk-behind lawn mower is 917.388651 (often written without the dot as 917388651). You can confirm it on the model tag and in the 917388651 owner's manual.

Where to find the model number on the mower

Look for the model tag in common locations used on Craftsman walk-behind mowers:

• On the rear of the deck near the discharge opening
• On the top of the deck near the engine mounting area
• Near the handle mounting brackets
• On a label near the height-adjustment area

How to confirm you have the right model (quick checks)

Use these identifiers together so you order the correct Craftsman parts:

• Model number: 917.388651
• Product type: gas walk-behind lawn mower (21-inch rear discharge)
• Engine family shown in documentation: Briggs & Stratton 4-cycle (example engine model listed as 123K02-0258-E1)

Model number vs. engine model number

These numbers are different and both can matter when ordering parts.

What it identifies	Example format	Used for
Mower model number	917.388651	Deck, handle, wheels, bagger, blade system parts
Engine model number	123K02-0258-E1	Engine-specific parts like carburetor, recoil starter, air cleaner

Why it matters

Parts diagrams and fit guarantees are tied to the mower model number. Using 917.388651 helps match the correct blade, blade adapter, cables, and hardware for your Craftsman mower.

Last updated: January 2026