Description
Overview:
The Walbro Carburettor Pressure Tester is a precision tool for diagnosing and leak-testing diaphragm carburettors used on small petrol engines such as chainsaws, brushcutters, strimmers, hedge trimmers, and leaf blowers. Built with a durable metal gauge and a flexible, fuel-resistant hose, it helps verify the integrity of carburettor diaphragms, needle valves, fuel lines, pulse lines, and crankcase seals. The gauge is scaled to 0.25 MPa (approx. 2.5 bar / 36 psi) for clear, repeatable readings, with a safety pressure release valve for controlled depressurising after tests. Supplied with a reducing tube connector to suit small ports often found on Walbro diaphragm carburettors (e.g. common WT and WA types), it supports accurate setup and maintenance to keep small engines reliable and within manufacturer test limits.
Key Features:
- Gauge scaled to 0.25 MPa (approx. 2.5 bar / 36 psi) for precise pressure checks on small engines
- Clear, easy-to-read dial with MPa and PSI markings for quick diagnostics
- Integrated pressure release valve for safe, controlled venting after tests
- Reducing tube connector included for a secure fit on small carburettor and pulse line fittings
- Robust construction with a metal gauge body and fuel-resistant hose for long service life
- Helps detect air leaks at needle valves, metering diaphragms, gaskets, crank seals, and fuel lines
- Supports correct tuning and reduces repeat faults like poor idle, stalling, and hard starting
- Suitable for workshop and mobile use by tradespeople and DIY users
- Compatible with diaphragm carburettors and other small engine components found on handheld tools and compact equipment
- Provides headroom above typical test pressures (often around 10-15 psi / 0.7-1.0 bar) for reliable leak checks
Typical Applications:
Leak testing Walbro diaphragm carburettors, checking crankcase sealing on two-stroke engines, verifying pulse line integrity, and pressure-testing fuel lines and fittings. Useful during carburettor rebuilds, after gasket or seal replacement, and when diagnosing symptoms such as fuel starvation, erratic idle, or loss of power.
Also known as:
Carb pressure tester, carburettor leak tester, pressure loss gauge, diaphragm carb tester, small engine carb pressure tool.
Product Specifications
| L&S Part No. | 350 504 |
|---|---|
| Manufacturer | Walbro |
| OEM No. | 243-504 |
| Unit of Sale | 1 |
| Machine Type | Engines |
