Air Filter Tune Up Kit With Primer Bulb Diaphragm And Gasket For BS 550 400 450 500 Series Small Engines Fits 3.5HP To 4.75HP Classic Sprint Quattro For Faster, Smoother Starts And Reliable Power

High-Performance Tune-Up Kit for BS Small Engines
✔️ Replaces air filter, diaphragm kit, primer bulb, and spark plug for BS 400-500 series engines, ensuring smooth starts and reliable power

This tune-up kit is a set of essential replacement parts designed for small engines in lawn mowers, generators, and outdoor power equipment, helping keep them running efficiently in home or professional settings.

✅ Compatible with BS 9B902 and 10A902 series engines after code 02101000
✅ Includes replacements for B&S 698369 air filter and 495770 diaphragm kit
✅ Features primer bulb for B&S 494408/694394 and spark plug for B&S 796112
✅ Works with BS 3.5-4.5 HP engines, including Classic, Sprint, and Quattro models with plastic air cleaner housings

💡 How can a tune-up kit boost the performance of small engines?
Tuning up your engine keeps it in top shape for everyday use.
- Reduces starting issues and improves fuel efficiency over time
- Extends engine life by replacing worn parts like filters and bulbs
- Enhances power output for tasks like mowing or powering tools
- Prevents breakdowns in outdoor gear used in yards or workshops