JDLLONG Fuel Pump Kit for Kohler CH11-CH16 & CV11-CV16 Engines — Direct-Fit Replacement, Complete Assembly

JDLLONG 12-559-02-S / 12-559-01-S fuel pump kit is a direct-fit, brand-new replacement engineered to restore fuel delivery on Kohler CH and CV series engines and compatible John Deere models.

This kit contains the precision replacement components designed to match OE fit and function for a range of small gasoline engines. It addresses the common wear points in mechanical fuel pumps so lawn tractors, mowers, and utility machines regain reliable fuel flow. Every part is manufactured to professional-grade tolerances and sold as a complete assembly to simplify repairs.

Which engines and machines will this fuel pump kit fit?

This pump kit is compatible with many Kohler CH and CV series engines and corresponding John Deere part numbers. Verify your engine model and OEM reference to confirm fitment before ordering.

• Compatible Kohler engine families: CH11, CH12.5, CH13, CH14, CH15, CH16, CH410, CH430, CH450, CV13, CV15, CV16, CV460–CV493.
• Common John Deere applications: AM133627 fitments used on LX, LT, GT, GS and LTR model garden tractors and mowers.
• Multiple part numbers: replaces 1255902-S, 1255901-S, 1239303 and related OEM references.

How does this kit restore engine performance?

The replacement pump restores consistent fuel pressure and volume to carburetors, reducing hard starts, stalling, and poor throttle response caused by worn diaphragms or leaking valves. It is sold new to avoid issues found in rebuilt cores.

• New diaphragm and valves to re-establish correct pump action and seal integrity.
• Factory-grade materials to withstand fuel exposure and vibration typical in outdoor equipment.
• Complete assembly for a single-step swap—no improvised repairs needed.

What should I check before ordering or installing this fuel pump?

Confirm part compatibility and inspect mounting, linkage, and fuel line orientation prior to installation. Small engines can look similar; matching model and part numbers prevents returns and helps ensure a correct fit.

• Compare the kit part numbers with your existing pump and engine manual.
• Inspect mounting bolt pattern, pushrod or linkage length, and fuel line connections for match.
• Consider replacing accompanying fuel filters, hoses, or clamps while you have the area open.

How difficult is installation and what tools are needed?

Installation is straightforward for anyone comfortable with small-engine maintenance. Typical installs require basic hand tools and minimal disassembly of the engine shroud or nearby components.

• Common tools: socket set, screwdrivers, pliers, and gasket scraper if needed.
• Allow time to drain fuel, remove old pump, and route hoses correctly to avoid air leaks.
• If unsure, consult a small-engine technician or the OEM service manual for torque values and linkage setup.

Who is this for: This JDLLONG fuel pump kit is intended for DIY mechanics, professional service shops, and equipment owners who need a reliable replacement for Kohler CH/CV engines or John Deere machines using part AM133627. It’s ideal for restoring dependable fuel delivery on mowers, garden tractors, and light-duty utility equipment where OEM-matching performance and new-component reliability matter.