38-Gram Tank For Longer Listed Runtime
The 38 g tank lists about 40 minutes at high power or 80 at low power. This upright torch weighs about 368 g; use its gas knob for adjustment and shutdown.

LX-761
The LX-761 is an upright butane torch with an approximately 38 g tank and 368 g net weight. Published high/low runtime estimates are 40/80 minutes, and separate gas and air controls adjust flame size and type.
The 38 g tank lists about 40 minutes at high power or 80 at low power. This upright torch weighs about 368 g; use its gas knob for adjustment and shutdown.

The gas knob changes flame size; the air valve selects jet or diffusion. The torch remains lit after the ignition button is released, so follow its gas-knob shutdown sequence.

The package supplies the LX-761 torch and a detachable stand, packed separately. Refined butane is not included; this is not a catalyst-and-contact-tip soldering kit.

Choose by tank capacity, net weight and the gas-knob shutdown procedure.
| Model or task | Works | What to check |
|---|---|---|
| Refined butane | Required | Fuel is supplied separately; follow the model filling instructions. |
| Kitchen finishing | Listed use | Match the flame and exposure to the food/cookware task. |
| Open-flame soldering | Application dependent | Confirm joint, solder and heat demand; no universal size rating. |
| LX-TIP contact-soldering assemblies | Fit not verified | The tip system names LX-770 and LX-771, not LX-761. |
| Jet and diffusion flame selection | Documented | Use this model's air control after ignition. |
| Work near flammable vapors | No | Keep pressurized fuel and hot flame away from ignition hazards. |
The LX-761 tank is listed at approximately 38 g (1.3 oz), compared with 20 g for LX-760. Its high/low runtime estimates are 40/80 minutes rather than 20/40.
Net torch weight is approximately 368 g (13.0 oz), with the stand listed separately at about 18 g. The packed shipping weight should not be substituted for those net figures.
Yes, the manual says it remains lit until turned off. Shutdown uses the gas adjustment knob, so releasing the igniter alone is not the documented way to stop this model.
Allow 7.2 in (183 mm) for the torch height and 1.8 in (45 mm) for the tank diameter. Height with the stand is 7.28 in (185 mm).
No. Approximately 80 minutes is the low-power estimate; the high-power estimate is 40 minutes. Neither value guarantees every operating condition.
No leakproof guarantee is established. If a filled LX-761 loses fuel while switched off, stop and follow the manual's leak response instead of treating that as normal working runtime.
The manual lists a 2372 F (1300 C) core and 1292 F (700 C) extended flame. These distinct maxima do not mean the workpiece or solder joint reaches those temperatures.
The core flame is approximately 0.9-1.6 in (24-40 mm), and the extended flame is 3.5-6.1 in (90-155 mm). Keep the full extended flame clear of nearby materials.
It uses a gas adjustment knob: turn counterclockwise to increase and clockwise to decrease. A gas safety lock must be held to start gas flow, following this model's sequence.
Yes. On LX-761 the air-control valve selects the flame type after ignition: open vent for jet, closed vent for diffusion. The gas knob still controls flame size.
Industrial use is excluded from warranty coverage. Assess whether the torch suits your task separately from warranty eligibility; this 38 g model has no industrial-use coverage.
LX-761 includes a removable stand, packed separately from the torch. It supports stability on a suitable horizontal surface; keep the flame tool away from flammable material.
LX-761 lists a 38 g tank, about 368 g net weight and 40/80-minute high/low estimates. LX-760 lists 20 g, about 175 g and 20/40 minutes. Choose between greater listed capacity and the lighter body based on the task.
Those replacement accessories identify LX-770 and LX-771 complete systems. A larger LX-761 tank does not establish the required catalyst and contact-tip fit.
No verified joint-thickness or material-wide brazing rating is supplied. The tank capacity and maximum flame temperature are not measured heat-transfer performance for every joint.
The manual identifies a refillable butane tank and piezo ignition button. It does not specify mains power or a battery as a requirement for the documented operation.
The model manual requires refined butane and warns against ordinary gas labeled simply butane. LX-761 is supplied without fuel; confirm the refill can and suitable nozzle before use.
12 months standard; 24 months when you register online within 90 days of purchase. The larger-capacity torch still has defects-only terms: commercial use is capped at 12 months, industrial use and normal wear are excluded.
Stop using the torch and treat suspected leakage according to the leak instructions. Keep it clear of sparks or flames and contact Lexivon; do not repeatedly refill a leaking tool.
Turn the gas adjustment knob clockwise until you hear a click and the gas safety lock engages. Then move the ignition safety-lock lever down to secure the ignition button.
The LX-761 manual says it will not light that way. Start gas flow with the gas safety lock and adjustment knob first, then unlock and press the ignition button in the documented order.
Its troubleshooting section says to press and hold the gas lock while turning the adjustment knob. If the control remains damaged or abnormal, stop and contact support rather than forcing it.
No. The noise alone does not establish a root cause, but suspected gas loss needs the manual's stop-use leak response and Lexivon support rather than continued operation.
Use the LX-761 instructions: room-temperature torch, no use for five minutes before filling, then allow up to five minutes afterward for escaped fuel to evaporate. Ensure the tank and surroundings are dry before lighting.