Does this fit the Mountfield RS100?

Sorry but can’t say for sure. I ordered this a couple of years ago for my Briggs & Stratton engined mower. Bought this as it was a genuine spare which I knew would fit.

will this fit the JS63c mower?

Unfortunately we do not have any information on products other than from Briggs & Stratton. We would recommend to contact your product's manufacturer for the suited replacement part.

would this fit a mcallister 500E series petro; mower (Briggs & Stratton 09P602?

Not sure, let me know if you need a picture of my mower with the part to see if it'll be of any use to you.

Will this fit a 450E ? As the one on the motor looks to have a pre formed hole in it!

Hello, yes, this primer bulb is suitable for the Briggs & Stratton 450E Series engine.

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⛽ Prime your power, start smarter!

PRECISION OEM FIT - Engineered to exact Briggs & Stratton standards for seamless compatibility.
LIGHTWEIGHT DURABLE - Constructed from high-quality plastic weighing just 4.54g for lasting performance.
OPTIMIZED FUEL PRIMING - Enhances engine start-up efficiency with Pulsa Prime carburetor systems.
UNIVERSAL COMPATIBILITY - Fits multiple Sprint, Classic, and Quattro engine models—check your manual to confirm.
GENUINE REPLACEMENT PART - Authentic Briggs & Stratton component ensuring reliability and peace of mind.

The Briggs & Stratton Carburettor Primer Bulb 694394 is a genuine OEM replacement designed for Sprint, Classic, and Quattro engines with Pulsa Prime carburetors. Lightweight and precision-engineered, it ensures optimal fuel priming for quick, reliable engine starts. Perfect for professionals who demand seamless performance and hassle-free maintenance.

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€ 7.70

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Manufacturer	Briggs and Stratton
Part Number	694394
Product Dimensions	2.54 x 20.32 x 17.78 cm; 4.54 g
Item model number	694394
Size	1
Colour	Multi
Style	694394
Material	Plastic
Power Source	Petrol powered
Item Package Quantity	1
Number of Pieces	1
Usage	Fuel priming systems in engines with Pulsa Prime carburettor, especially lawn mowers
Included Components	1 x Primer Briggs & Stratton for Carburettor 694394, 1 Pack
Batteries included?	No
Batteries Required?	No
Item Weight	4.54 g

Briggs and Stratton Carburettor Primer Bulb. 694394. Sprint/Classic/Quattro Engines

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