LCT 208cc Service Manual

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Service manual (32 pages)

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Jeremy

August 3, 2025

I hooked my 208cc cmxx mother to a pressure washer pump and it starts and runs but I got a hold the red throttle lever over manually wide open if not the motor dies

Donald Roger Christianson

June 20, 2025

Valve lash measurement

Summary of Contents for LCT 208cc

Page 1 LCT Engines Online Service Manual...
Page 2: Table Of Contents
Table of Contents Engine Model Number & Serial Numbering System General Specifications General Troubleshooting Advanced Troubleshooting (for authorized LCT technicians) Spark Plug Service Engine Oil Level Check Engine Oil Change Engine Oil Recommendations Maintenance Schedule Torque Specifications 208cc Summer Engine Dimensions...
Page 3: Engine Model Number & Serial Numbering System
5. Shaft - This column is used for the description of the PTO shaft. This will aid in determining what will be the engine’s primary use. 6. Shaft Detail - This column references a chart that designates which LCT engineering drawing corresponds to the PTO shaft.
Page 4: Engine Model Number & Serial Numbering System
Cap w/ Tether Cord Two Low Oil Fill Plugs C&U Bearings Viton Oil Seals Single Coil DC Charging System Dual Coil DC Charging System (TBD) Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc...
Page 5: General Specifications
.20 +/- .02mm (.007-.009 in.) Dry Weight (Summer Engines) 35lbs (16.6kg) 57.32lbs (26kg) 69.45lbs (31.5kg) Dry Weight (Snow Engines) 38lbs (17.25kg) 61.5lbs (28.9kg) 75.5lbs (34.3kg) Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc...
Page 6: General Troubleshooting
7. Is the spark plug boot securely fastened to the spark plug? Remedy: Slide over spark plug and fit securely. 8. Has the fuel being used been purchased within the last three months and was it stored in a plastic container? Remedy: Replace old fuel with new fuel. 9. Is the engine flooded? Remedy: Remove spark plug and replace with any of the spark plugs listed under Spark Plug Service, pg. 9. • NOTICE Using an incorrect spark plug may cause engine damage. Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc...
Page 7: General Troubleshooting
Remedy: Refuel engine. 6. Is the fuel petcock turned to the on position? Remedy: Turn to the on position. 7. Is the throttle set too low (variable speed models only)? Remedy: Increase the throttle. Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc...
Page 8: Advanced Troubleshooting (For Authorized Lct Technicians)
Engine stalls easily 1. Dirty/gummed up carburetor Clean 2. Fouled spark plug Replace 3. Clogged fuel line Replace 4. Valves out of adjustment Adjust Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc...
Page 9 10. Too much engine oil Adjust 11. Air fins clogged on engine causing to overheat Remove debris 12. Not enough oil in engine Adjust Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc...
Page 10: Spark Plug Service
A loose spark plug can overheat and damage the engine. Over-tightening the spark plug can damage the threads in the cylinder head. 6. Attach the spark plug cap. Ensure spark plug cap snaps into place securely. Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc...
Page 11: Engine Oil Level Check
The SAE oil viscosity and service classification are in the API label on the oil container. The manufacturer recommends you use API SERVICE category SJ engine oil, or better. Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc...
Page 12: Maintenance Schedule
Oil Leaks Check Bolts Check Fuel Hose Clamps Check * Spark plug gap to be set to 0.027 - 0.030 inches. NOTE Following proper maintenance is critical under extreme operating conditions. Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc...
Page 13: Torque Specifications
Cylinder cover bolt (crankcase/ PTO cover) 24-26 24-26 Cylinder head bolt 40-42 Flywheel nut 75-80 96-102 96-102 Flange bolt for value cover (head cover) 12-13 12-13 Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc...
Page 14: 208Cc Summer Engine Dimensions
12.500" in (317.50mm) 6.38 in [162mm] 5/16"-24 thread 4-5/16-24UNF 7.28" (185mm) 6.38" (162mm) 2.200" 3.622 41.25+0.025 2.58" (65.5±0.05mm) 4-5/16-24 6.34" (162±0.05mm) 7.70" (195.5±0.05mm) Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 4.13" (105±0.05mm)
Page 15: 291Cc Summer Engine Dimensions
291cc Summer Engine Dimensions *Drawings do not accurately represent actual engine appearance. 22.5 Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc...
Page 16: 414Cc Summer Engine Dimensions
414cc Summer Engine Dimensions *Drawings do not accurately represent actual engine appearance. 22.5 Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc...
Page 17: 208Cc Snow Engine Dimensions
208cc Snow Engine Dimensions *Drawings do not accurately represent actual engine appearance. Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc...
Page 18: 291Cc Snow Engine Dimensions
ø92 0.15 81 0.1 81 0.1 90 0.1 105.5 0.1 369.03 70.8 70.8 208.3 90 0.1 105.5 0.1 4xø8.9 -0.1 90 0.1 105.5 0.1 Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc...
Page 19: 414Cc Snow Engine Dimensions
73.03 ø113 0.15 ø92 0.15 90 0.1 105.5 0.1 387.03 70.8 70.8 223.2 22.5 90 0.1 105.5 0.1 4xø8.9 -0.1 90 0.1 105.5 0.1 Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc...
Page 20: Exploded Parts Drawings
*Included with part# 40...
Page 21 208cc SERVICE KIT BREAKDOWN 208cc ELECTRIC START SNOW LCT ENGINE - PLMHK18650781DE-ABGJOQUVYE1M1S REFERENCE PART DESCRIPTION PART # HEATER BOX ASSY 532424932 SHIELD, HEATER BOX 532424934 SNOW MUFFLER ASSY 532424937 SNOW FUEL TANK ASSY 532424938 OVERSIZED FUEL TANK CAP(CLICK STYLE) 532424942...
Page 22 *Included with part# 40 Electric Start Only...
Page 23 291CC SERVICE KIT BREAKDOWN 291cc ENGINE - PLMHK19850781DE-ABGIJOQUVE1M/S REFERENCE PART DESCRIPTION PART # HEATER BOX ASSEMBLY-SNOW 532429206 MUFFLER ASSEMBLY-SNOW 532429208 FUEL TANK ASSEMBLY-SNOW 532429209 FUEL TANK CAP-OVERSIZED (CLICK STYLE)-SNOW 532429211 CARBURETOR ASSEMBLY-SNOW 532429215 CHOKE LEVER,CARBURETOR-SNOW 532429216 PRIMER BULB ASSEMBLY W/HOSE-SNOW 532429218 ELECTRIC STARTER ASSEMBLY-SNOW 532429220...
Page 24 *Included with part# 40 Electric Start Only...
Page 25 414CC SERVICE KIT BREAKDOWN 414cc SNOW ENGINE - PLMHK191150781DE-ABGIJOQUVE1MK REFERENCE PART DESCRIPTION PART # HEATER BOX ASSEMBLY-SNOW 532429294 MUFFLER ASSEMBLY-SNOW 532429208 FUEL TANK ASSEMBLY-SNOW 532429209 FUEL TANK CAP-OVERSIZED (CLICK STYLE)-SNOW 532429211 CARBURETOR ASSEMBLY-SNOW 532429295 CHOKE LEVER,CARBURETOR-SNOW 532429296 PRIMER BULB ASSEMBLY W/HOSE-SNOW 532429218 ELECTRIC STARTER ASSEMBLY-SNOW 532429297...

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