John and Kathy Boehm
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Engine parts for Hercules NXB engines can be found here


L4135R Manifold gasket, used, $10

L/LA/LU exhaust elbow, braze your own muffler to this elbow, has a repairable hole at the beend (see photo), as-is, $15

AL20222T, John Deere genuine piston rings, new, five rings (missing one oil ring), 3 1/2" standard for Model LA, $25

3 1/4 standard pistons for L $30 for one

Nice matched pair of 3 1/4 L pistons, standard bore, AL2347T, $60 for the pair

AL2348T 3 1/4 + .020 over pistons for L, $40 each, $70/pair, piston pins included, four available



Standard bore pistons, similar to above, includes piston pin, $20 each

AL2736T 3 1/2 inch plus .020 over piston for LA, piston pins included, $70/pair

Connecting rod for L or LA, used bearings with nice bearing surfaces, $30 each

Connecting rod for L or LA, used bearings bearing surfaces may be slightly scored, as is, $13 each

1 1/2 rain cap to fit muffler, $9

L/LA exhaust elbow, one broken ear, clean it up and braze an AC B muffler onto it to duplicate the original muffler assembly, as-is, $10

L4234T head for LA and LUC, no breaks or repairs, $25


Two views of L4106T head for L, $40, your choice

Head bolts, $0.75 each

L4118T #2 pulley for L only with JD engine, teeth show some wear, hole for mounting pin is enlarged, $40


Crankshaft pulleys for JD LA/LUC engine (not for Hercules engine or for L with JD engine):
NOTE: Casting # L4240T is the same as catalog part # AL2876T

L4240T (AL2876T) Crankshaft pulley #5, worn teeth, $30

L4240T (AL2876T) Crankshaft pulley Pressed steel pulley, $15

AL2699T Good Crankshaft, $35 (Can ship inexpensively in a flat rate box)


L4115T Front oil seal plate, $5

AM1597T Clutch pilot bushing with retainer, $18

AM1597T pilot bearing, used, $10

L587T Ferrule, fuel inlet line, $2

Set Screw and jam nut for starter, $15


Rear engine seal housing, with used seal, $5

Camshaft and gear, $25

L803T Idler shaft thrust washer, $5 each

Idler shaft with gear, $20

Oil pump, $25
Oil pump screen, $20
Oil line, $8


Cap, spring, and piston for oil pressure relief valve, $30

AT14098T Used dipstick, good condition, $5

Valve cover, $8

AL2675T Valve lifters, $5 each
Good used exhaust valves, none available at this time; Good used intake valves, $5 each; Springs $1 each; keeper rings, $1 each, Pins, $1 each

L/LA valve guide, new, $8

Oil pan similar to above, $10

Flywheel cover similar to above, $15

Front engine mounting bracket, $15

Spark plug wire holder, $15

Internal parts for governor as shown: $10

Governor housing and attached parts: $14

L4197T, $11

Rod from carb to governor, $15

L4252T bracket, $10

Bolt with 14H377 jam nut, $1

L4311T, Control cable clip, $9

L602T, Spring on throttle rod at ratchet plate, $25

L4248T Throttle plate without spring, $4


L4248T Throttle rod plate with spring, $29

AM669T Dented breather cap, one very small dent, $25


AM669T Dented breather caps, usable, similar to above, $8 each

AL2726T Breather/Oil filler tube $5

Oil pipes to oil gauge, $8

25H125 Grooved and tapered pin for crankshaft pulley, new, $2 each


Fan assemblies with very good bushings, similar to above, Ready to use, $85

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Good fan blades, $15 each, similar to above

AL2663T Engine front cover plate, $9

LA/LA/LI clutch pressure plate, $20
LA/L/LI clutch disk, $20

NOS L4128T Dowel pin used on front of engine block, $5



LA engine 3 1/2 standard bore, all internal parts plus crankshaft pulley, clutch disk, and pressure plate included, engine is stuck, but bore looks good, $60