LCT Engines Online Service Manual
Table of Contents Engine Model Number & Serial Numbering System General Specifications 2-3 4 General Troubleshooting 5-6 Advanced Troubleshooting (for authorized LCT technicians) 7-9 Spark Plug Service 9 Engine Oil Level Check 10 Engine Oil Change 10 Engine Oil Recommendations 10 Maintenance Schedule 11 Torque Specifications 12 208cc Summer Engine Dimensions 13 291cc Summer Engine Dimensions 14 414cc Summer Engine Dimensions 15 208cc Snow Engine Dimensions 16 291cc Snow Engine Dime
Engine Model Number & Serial Numbering System The first two lines of an engine’s number is the model number. It is alphanumeric and engraved on the side of the block to the right of the recoil. The third line is alphanumeric and is also the serial number. Serial Number Definitions: • • • • • The engine serial number consists of 11 to 12 alphanumeric characters.
Engine Model Number & Serial Numbering System Preproduction Plant Design Family Crankshaft Shaft Shaft Detail x P LM Moderate H Horizontal T Threaded XX S LS Intermediate V Vertical K StraightKeyed LX Extended P Tapered LD Diesel PLMHK14650124PBGPQRSE2 P Lister LM Moderate Design Family H Horizontal Crankshaft K Keyed PTO design 14 #14 Crankshaft Drawing 650 6.
General Specifications Item 208cc 291cc 414cc Maximum Speed 3850±50rpm 3850±50rpm 3850±50rpm Idle Speed 2150+/-50rpm 2150+/-50rpm 2150+/-50rpm Compression Ratio 8.5:1 8.2:1 8:1 Displacement 208cc 291cc 414cc Compression Release yes yes yes Cast Iron Sleeve yes yes yes Bore x Stroke 2.76" x 2.13" (70mm x 54mm) 3.15" x 2.28" (80mm x 58mm) 3.54" x 2.
General Troubleshooting Engine will not start: 1. Check oil level- Do you have the correct amount of oil? (Ref: Engine Oil Service, pg. 10) Remedy: Oil should be visible and to the top 2 threads of the LOWEST oil fill spout. 2. Is on/off switch on? Remedy: Turn to the on position. 3. Snow Only: a) Is the Run/Stop switch in the Run Position? Remedy: Push switch to the Run Position. b) Is the snow safety key inserted into slot? Remedy: Push key into slot to fully engage. 4.
General Troubleshooting Engine stops running: 1. 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. 2. Is the air filter dirty? Remedy: Replace air filter element if dirty. Clean prefilter of any dirt or dust. 3. Was the engine choked? Remedy: When starting the engine the choke lever should be pushed left to the on position and after starting pushed right to the off position.
Advanced Troubleshooting – For Authorized LCT Technicians ENGINE Complaint Symptom and possible causes Engine will not start, or is hard to start Compression too low Remedy 1. Valves out of adjustment Adjust 2. Worn valve guides or poor seating of valves Repair or Replace 3. Mistiming valves Adjust 4. Excessively worn piston rings Replace 5. Worn-down cylinder bore Replace 6. Poor seating of spark plug Retighten 7. Failed head gasket Replace Plug not sparking 1.
Noisy Engine Excessive Valve Chatter 1. Too large valve clearance Adjust 2. Weakened or broken valve spring Replace 3. Worn tappet or cam lobe Replace 4. Worn and burnt camshaft journal Replace Noise seems to come from piston 1. Worn down piston or cylinder Replace 2. Fouled with carbon combustion chamber Clean 3. Worn piston pin or piston pin bore Replace 4. Worn piston rings or ring grooves Replace Noise seems to come from crankshaft 1. Rattling bearings due to wear Replace 2.
Dirty or heavy exhaust smoke No spark or poor spark 1. Too much engine oil in the engine Adjust 2. Worn piston rings or cylinder Replace 3. Worn valve guides Replace 4. Scored or scuffed cylinder wall Replace 5. Worn valve stems Replace 6. Defective stem seal Replace 7. Worn oil ring side rails Replace 1. Defective ignition coil Replace 2. Defective spark plug Replace 3. Open-circuit wiring connection Check and repair Spark plug fouled with carbon 1.
Engine Oil Level Check Check the engine oil level with the engine stopped and with the engine in a level position. 1. Remove either side mounted filler cap dipstick or high oil fill dipstick and wipe it clean. 2. Insert and remove the dipstick without screwing it into the filler neck. Check the oil level shown on the dipstick. 3. If the oil level is low, fill to the edge of the oil filler hole with the recommended oil. 4. Securely screw in the filler cap/dipstick.
Maintenance Schedule Normal Operating Conditions (less than 40 hrs. per year) EACH USE Engine Oil Level Engine Oil Air Filter Spark Plug* Cylinder/Head Fins Oil Leaks Bolts Fuel Hose Clamps FIRST MONTH EVERY 6 MONTHS Replace Replace ONCE A YEAR Check Check Clean Clean / Replace Replace Clean Check Check Check * Spark plug gap to be set to 0.027 - 0.030 inches. Extreme Operating Conditions (greater than 40 hrs.
Torque Specifications 208cc 291cc 414cc Torque (N.M) Torque (N.M) Torque (N.
208cc Summer Engine Dimensions *Drawings do not accurately represent actual engine appearance. 16.250 in (412.75mm) 11.625 in (295.275mm) 3.475 in (88.265mm) 14.00 in (355.6mm) 13.45in (341.63mm) 4.17 in [106mm] 2.4309 in (61.7mm) .750 in (19.05mm) 3.05"(77.5mm) 5/16-24UNF 3.78 in [96mm] 5/16"-24 thread Key width 3/16 in (4.76mm) 3.190 in (81.026mm) 6.38 in [162mm] 10.110 in (256.79mm) 3.625 in [92mm] BOLT CIRCLE 4-5/16-24UNF 12.500" in (317.50mm) 7.28" (185mm) 3.622 41.25+0.
291cc Summer Engine Dimensions *Drawings do not accurately represent actual engine appearance. 90 106 14 2-ø10.5 ø12 Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC R13 R7 132 17 29 22.
414cc Summer Engine Dimensions *Drawings do not accurately represent actual engine appearance. 133±0.03 432 485 400 90 106 14 2-ø10.5 ø12 Rev:072409 Copyright © 2009 Liquid Combustion Technology, LLC R13 R7 132 17 29 22.
208cc Snow Engine Dimensions *Drawings do not accurately represent actual engine appearance.
291cc Snow Engine Dimensions *Drawings do not accurately represent actual engine appearance. 446 100 3º 60˚ 28 R2 34+10 65 73.03 R2 349 +1 59 0 R3 ø30 -0.04 -0.06 8x5/16-24 133.5+-0.05 133.5+-0.05 ø/10.5 3/8-24UNF-2B 4.5 424 0 6.4-0.05 0 ø25.4-0.025 402 0 9.12 -0.13 2º 73 81+- 0.1 369.03 296 ø113+-0.15 ø92+-0.15 90+- 0.1 105.5+-0.1 182 145 182 297 260 317 70.8 208.3 35 20 N 90+-0.1 118 0 4xø8.9-0.1 N 90+-0.
414cc Snow Engine Dimensions *Drawings do not accurately represent actual engine appearance. 465 249 100 118 3º 60˚ 28 R2 34+10 65 73.03 R2 359 +1 59 0 R3 ø30 -0.04 -0.06 133.5+-0.05 133.5+-0.05 ø/10.5 3/8-24UNF-2B 4.5 431 0 6.4-0.05 0 ø25.4-0.025 412 0 9.12 -0.13 2º 73 103 387.03 8x5/16-24 ø113+-0.15 ø92+-0.15 90+- 0.1 105.5+-0.1 314 183 103 223.2 322 225 270 70.8 35 640 22.5 90+-0.1 132 0 4xø8.9-0.1 N 90+-0.
5 47 4 27 30 37 31 34 49 16 29 36 40* 25 33 39 38 44 *Included with part# 40 41 10 12 40 22 32 23 45 42 7 26 15 21 1 3 6 2 28 46 19 18 13 8 11 48 20 17
208cc SERVICE KIT BREAKDOWN 208cc ELECTRIC START SNOW LCT ENGINE - PLMHK18650781DE-ABGJOQUVYE1M1S REFERENCE # PART DESCRIPTION PART # 1 HEATER BOX ASSY 532424932 2 SHIELD, HEATER BOX 532424934 3 SNOW MUFFLER ASSY 532424937 4 SNOW FUEL TANK ASSY 532424938 5 OVERSIZED FUEL TANK CAP(CLICK STYLE) 532424942 6 SNOW CARBURETOR ASSY 532424944 7 SNOW CHOKE LEVER,CARBURETOR 532424947 8 FUEL PRIMER BULB WITH HOSE 532424949 10 ELECTRIC STARTER ASSY 532424953 11 KEY SWITCH ASSY 532424954 12 CDI BOX 532424955 13 ON/OFF S
5 4 37 36 27 47 49 30 34 31 33 29 10 38 40* 25 39 44 12 *Included with part# 40 40 41 50 22 26A 23 21 42 15 51 16 32 7 28 3 6 13 18 19 48 1 Electric Start Only 11 8 20 17
291CC SERVICE KIT BREAKDOWN 291cc ENGINE - PLMHK19850781DE-ABGIJOQUVE1M/S REFERENCE # 1 3 4 5 6 7 8 10 11 12 13 15 16 17 18 19 20 21 22 23 25 26 26A 27 28 29 30 31 32 33 34 36 37 38 39 40 41 42 44 46 47 48 49 50 51 PART DESCRIPTION HEATER BOX ASSEMBLY-SNOW MUFFLER ASSEMBLY-SNOW FUEL TANK ASSEMBLY-SNOW FUEL TANK CAP-OVERSIZED (CLICK STYLE)-SNOW CARBURETOR ASSEMBLY-SNOW CHOKE LEVER,CARBURETOR-SNOW PRIMER BULB ASSEMBLY W/HOSE-SNOW ELECTRIC STARTER ASSEMBLY-SNOW KEY SWITCH ASSEMBLY-SNOW CDI BOX ASSEMBLY-SNOW O
5 4 37 36 27 47 49 30 34 31 33 29 10 38 40* 25 39 44 12 *Included with part# 40 40 41 50 22 26A 23 21 42 15 51 16 32 7 28 3 6 13 18 19 48 1 Electric Start Only 11 8 20 17
414CC SERVICE KIT BREAKDOWN 414cc SNOW ENGINE - PLMHK191150781DE-ABGIJOQUVE1MK REFERENCE # 1 3 4 5 6 7 8 10 11 12 13 15 16 17 18 19 20 21 22 23 25 26 26A 27 28 29 30 31 32 33 34 36 37 38 39 40 41 42 44 46 47 48 49 50 51 PART DESCRIPTION HEATER BOX ASSEMBLY-SNOW MUFFLER ASSEMBLY-SNOW FUEL TANK ASSEMBLY-SNOW FUEL TANK CAP-OVERSIZED (CLICK STYLE)-SNOW CARBURETOR ASSEMBLY-SNOW CHOKE LEVER,CARBURETOR-SNOW PRIMER BULB ASSEMBLY W/HOSE-SNOW ELECTRIC STARTER ASSEMBLY-SNOW KEY SWITCH ASSEMBLY-SNOW CDI BOX ASSEMBLY-S
