Tohatsu 2.5–3.5 HP Outboard Carburettor Float Needle Valve

Replacement carburettor float needle valve for selected Tohatsu 2.5 HP and 3.5 HP 2-stroke outboard engines, with additional applications on compatible Mercury / Mariner models.

Tohatsu OEM Part Number: 309-03147-1

The float needle valve controls the flow of petrol into the carburettor float chamber. A worn or damaged valve may cause fuel leakage, carburettor flooding, difficult starting or poor engine performance.

Tohatsu Outboard Fitment – UK & European Models

HP	Engine Models	Engine Type
2.5 HP	M2.5A2	2-Stroke
3.5 HP	M3.5A2	2-Stroke
3.5 HP	M3.5B2	2-Stroke

Mercury / Mariner Applications

Also cross-referenced for selected Tohatsu-manufactured Mercury / Mariner 2-stroke outboards:

2 HP
2.5 HP
3 HP
3.3 HP
3.5 HP

Important: Mercury / Mariner compatibility depends on the original carburettor design. Please check the engine serial number and original needle valve before ordering.

OEM Part Numbers

309-03147-1 – Tohatsu
309031471M – Tohatsu alternative format
309-03147-0 – Earlier reference

Related Mercury / Mariner References

952631 – Float needle valve
95263A1 – Needle and seat kit
8M0171808 – Replacement needle and seat kit

Product Details

Condition: New
Product: Carburettor Float Needle Valve
Engine Type: 2-Stroke
Application: Selected Tohatsu 2.5–3.5 HP and Mercury / Mariner 2–3.5 HP outboards
Main Part Number: 309-03147-1
Quantity: 1 × Float Needle Valve

Please refer to the product photographs for the exact part supplied.

This listing is for the individual float needle valve only, not the complete carburettor or needle and seat kit.

Important – Check Compatibility

Please confirm your engine model, serial number and original carburettor part number before ordering.

Some earlier carburettors use a different needle, seat and float hinge arrangement. These components must not be mixed with incompatible versions.

If the part looks the same as yours, this does not always mean it is correct for your outboard.

If unsure, contact SSI Marine with your engine details before purchasing.

Why Buy From SSI Marine?

Official Tohatsu Outboards Dealer
Over 10,000 genuine and aftermarket outboard parts stocked in the UK
Experienced marine engineers offering technical support
Same-day dispatch before 1 PM Monday–Friday
Royal Mail Tracked 24 UK delivery
Collection available from Leigh, Greater Manchester
Celebrating 10 years supplying the UK marine market

Buyer Responsibility: Please confirm your engine model and serial number before purchasing.

2–3.5 HP Tohatsu Outboard Carburettor Float Needle Valve 309-03147-1