Craftsman 917375520 rotary lawn mower Parts

For Craftsman rotary lawn mower model 917375520, the engine crankcase capacity is 20 oz (about 0.6 qt) of oil. Use a high-quality detergent oil rated API SG-SL, and keep the level at the full mark as shown in the 917375520 owner's manual.

Oil type and when to change it

We recommend choosing viscosity based on temperature (SAE 30 is common for warm weather). Multi-viscosity oils (like 10W-30) can help cold starts but may increase oil consumption in warmer conditions.

• Use high-quality detergent oil rated API SG-SL
• Check oil before each start and after every 5 hours of continuous use
• Change oil every 25 hours of operation or at least once per year
• Tighten the oil plug securely after checking or draining

Quick capacity reference

Item	Spec for Craftsman 917375520
Engine oil capacity	20 oz (0.6 qt)
Oil rating	API SG-SL
Typical change interval	Every 25 hours or yearly

How to drain oil safely (high level)

Before tipping the mower to drain oil, run the engine until the fuel tank is empty, then follow the safe steps in the manual.

• Disconnect the spark plug wire
• Remove the oil cap and set it on a clean surface
• Tip the mower as directed and drain into a suitable container
• Refill with 20 oz, then recheck the level

Why it matters

Running low on oil is one of the fastest ways to damage a small engine. Keeping the correct 20 oz fill level and checking it regularly helps prevent overheating, accelerated wear, and hard starting.

Last updated: January 2026

The model number for this Craftsman walk-behind rotary lawn mower is 917.375520 (often written without the dot as 917375520). You can confirm it on the mower’s model tag and in the 917375520 owner's manual.

Where to find the model number on the mower

Check these common locations on Craftsman walk-behind mowers:

• On the rear of the mower deck near the discharge area
• On the top of the deck near the engine mounting area
• Near the handle mounting brackets
• On a sticker or metal plate that also lists engine details

Why the dot sometimes appears (917.375520 vs 917375520)

Both formats refer to the same mower; the dot is a formatting style used in some manuals and parts diagrams.

You might see it as	What it means	Use it for
917.375520	Same model number with a dot	Manuals, decals, diagrams
917375520	Same model number without a dot	Parts lookup, ordering

Why it matters

Using the exact model number ensures you get the right Craftsman parts and diagrams for your mower’s 22-inch deck and drive system. Even small model-number differences can change the blade, belt, or control cable fit.

Last updated: January 2026

On a Craftsman rotary lawn mower like model 917375520, we typically find the model and serial number on a printed label or stamped plate on the mower deck or frame, most often near the rear wheel area or close to the engine. Confirm the exact label location in the 917375520 owner's manual.

Common places to check on model 917375520

Look for a silver or white label, or a stamped metal plate, in these spots:

• On the mower deck (top side), near the rear wheels
• On the frame rail near the rear axle area
• Near the engine mounting area on the deck
• On the handle bracket area (where the handle bolts to the deck)
• Under grass buildup areas (wipe the deck clean to reveal the label)

Quick steps to find it fast

• Turn the engine off and let it cool completely
• Disconnect the spark plug wire for safety
• Tip the mower only as directed in the 917375520 owner's manual (to avoid fuel or oil leaks)
• Wipe dirt and grass from the deck and rear frame area
• Use a flashlight and take a photo of the tag for easier reading

What the label usually shows

Label item	What it’s used for
Model number (example: 917.375520)	Matching parts and diagrams
Serial number	Identifying production run
Engine info	Getting correct engine parts (plug, filter, carb parts)

Why it matters

Using the exact model number helps us match the correct Craftsman walk-behind mower parts (like a blade, drive belt, or control cable) and prevents ordering a similar-looking part that will not fit.

Last updated: January 2026