Extended Description

• Description: Genuine Walbro K5-WYTA Spiral Metering Diaphragm Upgrade Kit - Includes Brass "W"
• Gauge
• Editorial: Walbro's patented spiral metering diaphragm upgrade kit allows you to convert your
• carburettor from the traditional rubber metering diaphragm to Walbro's ethanol
• compliant spiral metering diaphragm. The new spiral metering diaphragm is
• impervious to the effects of Ethanol and additives in modern fuels and does not
• deteriorate with age.
• Replaces OEM: Walbro K5-WYTA
• Fits: This genuine Walbro K5-WYTA spiral metering diaphragm and gasket upgrade kit is
• suitable for use with selected Walbro carburettor models including but not limited
• to WTF-3, WTF-4, WTF-8 and WTF-9. Please refer to the notes below.
• Features: A membrane with a high grade teflon film in the centre and a stainless steel spiral
• diaphragm - impervious to the effects of Ethanol and other additives found in
• modern fuels.
• Currently over 500 Walbro diaphragm carburettor model numbers can be upgraded to
• use the new spiral diaphragm kits.
• All parts (except the metering lever) are contained in a clever installation sleeve
• to make assembly quicker and easier (refer to notes below).
• Standard Pack Quantity: 1
• Please Note: Warning - These parts are extremely durable inside the carburettor but fragile to
• handle - DO NOT bend or crease the membrane when handling or during assembly! The
• stainless steel spiral is more forgiving but care is still required when handling
• it. The metering lever must be replaced with the new one supplied, please reuse the
• old metering lever pin.
• Note: Fitting instructions -
• 1. Remove metering cover, old diaphragm and gasket.
• 2. Remove the metering lever and replace with the new one supplied, reusing the old
• metering lever pin.
• 3. Reset the metering lever height using the updated version of the brass "W" gauge
• part number OMK500-528 which is included in this spiral diaphragm kit. The
• adjustment point on the brass gauge is on the bottom, the indentation you need to
• set the lever height is below the word "Spiral".
• 4. 4. Install the new gaskets and diaphragm onto the carburettor while still
• contained inside the installation sleeve (Important - install onto the two metal
• pins, making sure that the word "TOP" printed on the installation sleeve is facing
• up).
• 5. Hold the installation sleeve with one hand and put the metering cover on over
• the top to hold it down.
• 6. Install the four screws and start them by just one turn each.
• 7. Then remove the clip off the end and pull the installation sleeve out, then
• torque the screws down normally.
• Footnote: When comparing this fitment application information to your carburettor model
• please disregard all letters (A, B, C) and -1 that may be at the end of your
• carburetor model number.
• Brand: Genuine Walbro,
• Product Line: Diaphragm and Gasket Set, Gasket and Diaphragm Set, Metering Diaphragm and Gasket
• kit - Spiral, Spiral Metering Diaphragm and Gasket Set,

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