Type "F" 1 1/2W, 2 1/2WA, 3 1/2WB

Parts listed here are for the sparkplug model Lauson engine equipped with the Wico "EK" magneto.  Some parts may interchange with the earlier ignitor model. We can help on bearings, rings, valves, etc. for larger sizes.

Part# Description Price
L01 Inst. & Parts, 1 1/2-3 1/2HP, with Wico "EK" 2.75
ALP001 Bearing, Rod 1-1/2HP 42.00
ALP002 Bearing, Rod 2-1/2HP 50.45
ALP003 Bearing, Rod 3-1/2HP 56.60
ALP004 Bearing, Main 1-1/2HP 47.60
ALP008 Carb Air Damper (Choke) 1 1/2HP 8.45
ALP009 Carb Needle Valve 23.00
ALP010 Carb Needle Valve Seat 28.60
ALP011 Check Valve 11.80
ALP015 Exhaust Rocker Lever 17A - 1-1/2HP 49.65
ALP0152 Exhaust Rocker Lever, 2-1/2HP 52.10
ALP017 Exhaust Rocker Lever Pin 78 all HP 11.80
ALP020 Exhaust Push Rod Fork 49.15
ALP025 Fuel Tank, 1-1/2HP 63.25
ALP0255 Fuel Tank, 1-1/2HP, rear fill 63.25
ALP030 Gasket, Cyl. Head, for 1-1/2HP with 3-5/8" bore 8.80
ALP040 Magneto Bracket (Wiko EK) 47.60
ALP041 Magneto Bracket (Wiko EK) with sparkplug hole in bracket
Not sure which one you need? Call us!
ALP042 Magneto Assy. Swivel Pin 26.35
ALP044 Magneto Retard Sleeve Pin 26.35
ALP045 Magneto Trip Rocker 58.8
ALP050 Magneto Trip Operating Lever 49.30
ALP051 Magneto Trip Operating Lever Screw 17.4
ALP052 Magneto Trip Rod #331 23.00
ALP054 Magneto Trip Sleeve #332 13.50
ALP060 Piston (up to 0.030 oversize available) 185.00
ALP062 Piston Pin 1-1/2HP (give piston dia.) 23.00
HMR27 Piston Ring 3 5/8" X 3/16" 6.60ea
HM01 Spark Plug, 7/8" straight thread 5.50
ALP065 Spring, Exhaust valve, 1-1/2 to 3-1/2HP 5.25
ALP066 Spring, Intake valve, 1-1/2 to 3-1/2HP 5.25
We substitute Stover springs - they may need to be shortened)
ALP067 Spring, gov. Detent 92 (all) 4.00
ALP068 Spring, Magneto Drive (Wico "EK") 4.50
ALP069 Spring, Magneto Return (Wico "EK") 4.50
ALP075 Valve, Exhaust 1-1/2HP 42.00
ALP077 Valve, Exhaust 3-1/2HP 46.50
ALP080 Valve, Intake 1-1/2HP 42.00
ALP082 Valve, Exhaust 3-1/2HP 46.50

AEROMOTOR "8 Cycle Pump Engine"

This unique engine is actually a 4 cycle with a cam and gears designed to let the engine fire every eighth revolution. The second half of the 8 cycle drew air into the cylinder without combustion, a slick way of cooling the engine. We have some used parts, but pickins are slim.

Part# Description Price
L005 Setting up & Operating Brochure 1.50
LS2 Aeromotor "For Pumping and Power" Catalog 3.50
HM012 Carb (Mixer) Needle Valve 23.00
HM013 Carb Needle Valve Bushing 19.75
HM0136 Exhaust Rocker Detente Latch 23.00
HM0137 Exhaust Rocker Roller 17.40
HM0138 Exhaust Rocker Roller Pin 15.40
HM01392 Fuel Tank Spacer 17.40
HM0145 Piston, cast iron, like original 185.00
HMR13 Piston ring 3" X 1/4" 6.60ea
HM015 Spring, Ignitor Tension 7.25
HM016 Spring, Ignitor Torsion 7.25
HM020 Valve, Exhaust 42.00
HM021 Valve, Intake 42.00


Associated, United and Amanco are basically the same engine. There may be differences in the hopper and carb, but most parts interchange with part #s being the same also. If your engine has an oval shaped nameplate on the hopper the HP rating will be slightly higher (the 2HP will be the same as 1-3/4HP, the 2-1/2 same as 2-1/4HP, etc.) If in doubt, give us your cylinder bore diameter when ordering. Please call for used parts.

Part# Description Price
L02 Inst. & Parts, Associated 1-1/2 to 18HP 6.60
L645 Inst. & Parts, United 1-1/2 to 18HP 4.40
HM024 Bearing, Rod CHC 1-1/2HP, two halves 42.00
HM025 Bearing, Rod CGM, 1-3/4HP 42.00
We should be able to help on any size rod bearing you may have to send us the rod and cap. Main bearings have to be poured in block & caps. We can supply babbitt and offer a brochure on pouring babbitt.
HM0251 Bearing, Rod DEA 3HP, two halves 47.60
HM0252 Bearing, Rod CGH, 4HP, two halves 53.25
HM0255 Cam roller, DTF, Exh push rod, 1-1/2 to 8HP 20.75
HM0255A Cam roller pin, DTH, 1-1/2 to 4HP 20.75
HM027 Carb Needle Valve AEM 1-1/2 to 12HP 30.85
HM0275 Carb Needle Seat DPP 1-1/2 to 2-1/4HP 22.80
HM028 Carb Bushing AEP 1-1/2 to 12HP 26.90
HM036 Decal, all engines 7.30ea
HM037 Exhaust Valve Lever CHK, 1-1/2HP 48.20
HM038 Exhaust Valve Lever AEB 1-3/4 to 2-1/4HP 48.20
HM039 Ex. Valve Lever DDY 3HP 52.40
HM0392 Ex. Valve Lever Pin 1-3/4 to 3-1/2HP 28.60
HM0394 Ex. Pushrod Guide Clamp ACS, 1-1/2 to 4HP 33.90
HM026 Gasket, Carb to Head 1-1/2 to 2-1/4HP 2.20
HM0289 Gasket, Head 1-1/2HP 8.25
HM029 Gasket, Head 1-3/4 (2-1/4 Air Cooled) 9.35
HM030 Gasket, Head 2-1/4 Water Cooled 9.35
HM0301 Gasket, Head 3HP 11.55
HM0302 Gasket, Head 4HP 13.20
HM0303 Gasket, Head 6HP 15.40
HM044 Gasket, Ignitor 1-1/2 to 12HP 3.30
HM0395 Gov. Collar AEH, 1-3/4 to 2-1/4HP 48.20
HM0398 Gov. Detent Lever Pivot Pin ADK, 1-3/4 to 4HP 16.35
HM040 Gov. Detent or Catch Block 1-1/2 to 4HP ADZ 26.90
HM041 Gov. Detente Roller ACV 1-1/2 to 8HP 15.70
HM042 Gov. Detente Adj. Needle ACU 30.85
HM0438 Ignitor anvil 47.45
HM047 Mag Lead-out, replaces G322 13.05
HM048 Muffler, 1-1/2HP, Cast Iron 56.00
HM049 Muffler, 1-3/4HP to 2-1/4HP, Cast Iron 56.00
HMR28 Piston Ring 3-5/8" X 1/4", 1-1/2HP 6.60ea
HMR31 Piston Ring 3-3/4" X 1/4", 1-3/4HP 6.60ea
HMR34 Piston Ring 4" X 1/4", 2-1/4HP 8.80ea
HMR42 Piston Ring 4-1/2" X 1/4", 3HP (See Piston Ring Listing For Larger Sizes) 8.80ea
HM9253 Pulley 4"X4", Set Screw Only 1-3/4 to 2-1/4HP * 85.00
HM9263 Pulley 4"X4", Set Screw & Keyway 1-3/4 to 2-1/4HP * 94.00
*Cast iron-for shafts up to 1 1/2" diam. (Give diam. and width of keyway)
HM043 Spring, Gov. Weight 4.95
HM0435 Spring, Gov. Weight adjusting screw ACY (all) 6.75
HM045 Spring, Ignitor Tension 1-1/2 to 12HP 7.40
HM046 Spring, Ignitor Trip "Pick" FTT 17.40
HM060 Spring, Exhaust Valve 1-1/2 to 2-1/4HP 6.05
HM061 Spring, Intake Valve 1-1/2 to 2-1/4HP 6.05
HM063 Valve, Exhaust ADA, 1-1/2 to 2-1/4HP 42.00
HM064 Valve, Intake ADB, 1-1/2 to 2-1/4HP 42.00
HM065 Valve, Exhaust DET, 3HP 46.50
HM066 Valve, Intake DES, 3HP 46.50
HM067 Valve, Exhaust BMK, 4HP 41.55
HM068 Valve, Intake BMB, 4HP 51.55
HM069 Valve, Exhaust ANL, 6HP 61.60
HM070 Valve, Intake AME, 6HP 61.60
(Valves available for all HPs)