Kawasaki FS-Series Cross-Reference: Filters, Plugs & Oil

The Kawasaki FS series is the commercial-grade cousin of the FR engines, and it shows up under a huge range of zero-turns and walk-behinds. Like the FR line, these engines share most of their consumables. They have the same spark plug, same oil and same primary fuel filter. However, the FS series adds a wrinkle the FR line mostly doesn’t: the air filter setup and even the oil filter can change with your engine’s spec number. Get the spec number right and the rest falls into place. Here’s everything in one spot, from the parts counter.

Full FS-Series Cross-Reference Table

*Capacities are approximate and assume a full oil filter. Always verify on the dipstick. †Exact part depends on your engine spec/code number (see below). Fuel-filter upgrade on any model: 49019-0031. Spark plug 92070-7004 = NGK BPR4ES.

Why Two of the “Same” Engine Take Different Parts

This is the part that trips up even good counter people. Kawasaki builds one base engine, an FS691V say, and to dozens of different spec (code) numbers. A mower brand like Cub Cadet, Exmark or Bad Boy can order that engine built to their preference: with or without an air pre-filter, with the standard or the upgraded fuel filter, or with one of two different oil filters (49065-0734 or 49065-0736). They’re all stamped “FS691V,” but the parts list isn’t identical.

Standard parts diagrams default to the base model. So if you order by engine model alone, or a counterperson looks it up without your spec number, you can walk out with a filter that doesn’t match what’s actually bolted to your machine. The fix is simple: pull the spec/code number off the engine label (it’s a separate line from the model often after a dash or labeled “CODE”) and match to that. This same spec-number variation runs across the FR, FS and FX families, it’s not unique to one engine.

Air Filters 11013-7049 / 11013-0752

The smaller engines like FS481V, FS541V, FS600V use a two-piece setup: Kawasaki main filter 11013-7049 plus a separate Kawasaki pre-filter 11013-7046. Aftermarket, Rotary 16509 comes as the filter and pre-filter together while Stens splits it, primary 102-442 and pre-filter 100-801 (the pre-cleaner also crosses to 108-822 and 12797).

The FS651V, FS691V and FS730V step up to 11013-0752. Kawasaki doesn’t list a pre-filter for these though the FS730V can be built with one depending on spec. Heads up: the aftermarket Rotary 16509 includes a pre-filter wrap, so on a no-pre-filter spec you can simply leave it off. Replace at least once a season, sooner in dust, and tap it out rather than blasting it with high-pressure air.

Check PriceKawasaki 11013-0752Check PriceKawasaki 11013-7049

Check PriceRotary 16509

Check PriceKawasaki 11013-7046

Spark Plugs 92070-7004 ×2

Same plug as the whole FR/FS family, and each engine is a V-twin, so you need two. Kawasaki 92070-7004 is a re-branded NGK BPR4ES, the NGK off the shelf is the same plug and Rotary 9873 is the aftermarket cross. They come pre-gapped, so they install straight out of the box; replace both at once so the engine runs even.

Fuel Filter 49019-7005 (and the upgrade)

The FS primary fuel filter is Kawasaki 49019-7005, a 30-micron filter. For aftermarket, Stens 120-562 is also 30-micron, it matches OEM filtration while Rotary 7998 is 60-micron, which flows fine but filters to a coarser particle size, so I lean toward the 30-micron options. Kawasaki 49019-0031 is the upgrade filter, and it’s a valid step-up on any FR, FS or FX engine where it isn’t already the primary.

Either way, stay with a genuine Kawasaki filter or a quality 30-micron cross. The cheap universal inline filters are less than optimal. It’s a couple-dollar part protecting a fuel system that costs a great deal more.

Check PriceKawasaki 49019-0031Check PriceKawasaki 49019-7005Check PriceStens 120-562

Oil Filter 49065-0734 / 49065-0736

This is where the spec number bites hardest. The small FS engines (481/541/600) use 49065-0734. The larger ones can take 49065-0736 or 49065-0734 depending on the spec. The FS651V and FS730V are documented both ways, and the FS691V is usually 49065-0734 but the factory may list otherwise by spec. Rotary 6929 or ECOGARD SE-1 cross the 49065-0736; the 49065-0734 crosses to ECOGARD X4476. Change it with every oil change.

Engine Oil 99969-6296 & Capacities

All six engines take the same Kawasaki 99969-6296. The FS481V/541V/600V hold roughly 1.8 quarts (grab two); the FS651V about 2.1 quarts; the FS691V and FS730V about 2.2 quarts (grab three). Use the viscosity called out in your operator’s manual for your temperature range.

Check PriceKawasaki 49065-0734Check PriceKawasaki 49065-0736

Check PriceECOGARD X4476

Check PriceKawasaki 99969-6296 oil

Check PriceECOGARD SE-1

Kawasaki Tune-Up Service Kit

Kawasaki bundles the routine maintenance parts into one factory service kit that covers the entire FS line carbureted and EFI:

One kit number spans the whole FS line and both fuel systems and the FS air filter changes across the series so confirm the kit’s contents match your engine’s spec number and air-filter setup before relying on it.

Check PriceKit 99969-6671

Quick Reference by Engine

FS-Series Parts FAQ