Kawasaki Tune Up Kit for FX751V/FX801V/FX850V Engines — 99969-6537 with 10W-40 Oil & Filters

The Kawasaki 99969-6537 Tune Up Kit is a factory-original maintenance pack containing 10W-40 KTech oil, replacement filters, and spark plugs specifically selected for many FX751V, FX801V and FX850V carbureted and EFI Kawasaki engines.

This genuine Kawasaki service kit gathers the most frequently replaced items into one box so you can perform a professional-quality tune-up without searching for individual parts. It’s intended for compatible FX-series commercial and residential engines; confirm fitment by model, type and serial number before ordering. The kit consolidates oil change consumables and ignition and fuel/air filtration to help restore running condition after routine service intervals.

Which engines and variants will this kit work with?

This kit is made to fit select Kawasaki FX751V, FX801V and FX850V engine models, covering both carbureted and EFI configurations. Because Kawasaki builds multiple sub-specs and serial ranges, the kit does not automatically fit every unit labeled with those model numbers.

• Designed for many FX751V, FX801V and FX850V engines (carb & EFI).
• Check your engine’s model, type and serial number to confirm compatibility.
• OEM Kawasaki part number: 99969-6537 — use as a cross-reference.

What components are included and why they matter?

This tune-up kit includes two quarts of 10W-40 KTech oil, an oil filter, an air filter, a fuel filter and two spark plugs — the core items that usually wear or degrade between scheduled services. Replacing these parts together helps ensure consistent lubrication, clean intake air and fuel, and reliable ignition timing.

• Two quarts of 10W-40 KTech oil for proper viscosity across operating temperatures.
• OEM oil filter to trap contaminants and protect engine bearings and rings.
• Air filter to prevent dust and debris from entering the combustion chamber.
• Fuel filter to keep injectors or carburetor circuits free of particulates and varnish.
• Two spark plugs sized for these FX engines to restore spark consistency.

How should I use the kit during a tune-up?

Use the kit as a one-stop service package: drain and replace engine oil with the included 10W-40, swap the oil filter, fit the new air and fuel filters, and install fresh spark plugs. Follow Kawasaki’s torque specs, service intervals and safety steps from your engine manual for best results.

• Drain warm oil, replace with supplied KTech 10W-40 per capacity specifications.
• Replace oil filter and install new filter gasket if applicable.
• Change air and fuel filters and inspect intake and fuel lines for wear.
• Gap and fit the two spark plugs, then start engine and check for smooth idle.

Are there any fitment or installation cautions?

Yes — confirm the kit suits your engine’s exact model/type/serial number before installing; not all FX751V, FX801V or FX850V variants use the same parts. Dispose of used oil, filters and spark plugs responsibly and follow Kawasaki’s service manual for torque and maintenance procedures.

• Verify model, type and serial number for correct fitment.
• Use correct torque specs when tightening plug and filter fittings.
• Recycle oil and filters at authorized facilities to meet environmental rules.

Who is this kit for? This Kawasaki 99969-6537 Tune Up Kit is aimed at owners, fleet managers and service technicians who maintain FX751V/FX801V/FX850V Kawasaki engines and prefer OEM parts for reliability and fit. It’s a convenient choice for scheduled maintenance or pre-season servicing of lawn, grounds or light-commercial equipment — provided you confirm compatibility with your specific engine variant.