Page 2 - Table of Contents
Table of Contents Engine Model Number & Serial Numbering System 2-3 General Specifi cations 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 Sc...
Page 3 - Engine Model Number & Serial Numbering System
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 2 The fi rst 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 ...
Page 5 - General Specifi cations; Item
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 4 General Specifi cations 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 Displac...
Page 6 - General Troubleshooting; Engine will not start:
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 5 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...
Page 7 - Engine stops running:
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 6 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 ...
Page 8 - Advanced Troubleshooting
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 7 Advanced Troubleshooting – For Authorized LCT Technicians ENGINE Complaint Symptom and possible causes Remedy Engine will not start, or is hard to start Compression too low 1. Valves o...
Page 10 - Spark Plug Service; Recommended spark plugs: Torch Plug: F6RTC; • Champing plug cross reference is: RN9YC (some tables show RN9YCC)
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 9 Dirty or heavy exhaust smoke 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 Replac...
Page 11 - Engine Oil Level Check; Engine Oil Change; Max Upper
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 10 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 fi ller cap dipstick or high oil fi ll...
Page 12 - NOTE; Maintenance Schedule
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 11 NOTE Following proper maintenance is critical under extreme operating conditions. Maintenance Schedule Normal Operating Conditions (less than 40 hrs. per year) EACH USE FIRST MONTH EV...
Page 13 - Torque Specifi cations
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 12 Torque Specifi cations 208cc 291cc 414cc Item Torque (N.M) Torque (N.M) Torque (N.M) Drain bolt 17-18 (150-160 in-lbs.) 24 (210-220 in-lbs.) 24 (210-220 in-lbs.) Oil drain tube (if equ...
Page 14 - 08cc Summer Engine Dimensions; mm
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 13 208cc Summer Engine Dimensions *Drawings do not accurately represent actual engine appearance. 4-5/16-24UNF 5/16-24UNF 16.250 in (412.75mm) 14.00 in (355.6mm) 11.625 in (295.275mm) 4....
Page 15 - 91cc Summer Engine Dimensions
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 14 291cc Summer Engine Dimensions *Drawings do not accurately represent actual engine appearance. 22.5 29 17 R13 R7 132 90 14 106 ø12 2-ø10.5
Page 16 - 14cc Summer Engine Dimensions
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 15 414cc Summer Engine Dimensions *Drawings do not accurately represent actual engine appearance. 22.5 29 17 R13 R7 132 ø12 2-ø10.5 90 400 485 14 106 432 133±0.03
Page 17 - 08cc Snow Engine Dimensions
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 16 208cc Snow Engine Dimensions *Drawings do not accurately represent actual engine appearance. '' ' '
Page 18 - 91cc Snow Engine Dimensions
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 17 291cc Snow Engine Dimensions *Drawings do not accurately represent actual engine appearance. 317 70.8 182 145 182 297 260 35 349 100 73 81 0.1 + - 317 70.8 182 145 182 297 260 35 349 ...
Page 19 - 14cc Snow Engine Dimensions
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 18 414cc Snow Engine Dimensions *Drawings do not accurately represent actual engine appearance. 70.8 322 35 359 100 73 103 270 70.8 183 103 225 35 100 73 + - + - + - + - + - + - 59 +1 0 ...
Page 20 - 08cc Manual Start Summer Engine Service Kit
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 19 208cc Manual Start Summer Engine Service Kit 1 Cylinder Head Assembly SK2081000 2 Push Rod Assembly SK2081001 3 Valve Cover Assembly SK2084500 4 Cylinder Assembly SK2081300 5 Piston A...
Page 21 - 91cc Manual Start Summer Engine Service Kit; RESIDENTIAL
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 20 291cc Manual Start Summer Engine Service Kit 1 Cylinder Head Assembly SK2911000 2 Push Rod Tappet Kit SK2911001 3 Valve Cover Assembly SK2914500 4 Choke Lever, Carburetor SK4142120 5 ...
Page 22 - COMMERCIAL
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 21 291cc Manual Start Summer Engine Service Kit 1 Cylinder Head Assembly SK2911000 2 Push Rod Tappet Kit SK2911001 3 Valve Cover Assembly SK2914500 4 Choke Lever, Carburetor SK4142120 5 ...
Page 23 - 14cc Manual Start Summer Engine Service Kit
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 22 414cc Manual Start Summer Engine Service Kit PLMHK291150124PBGPSTUVE2S RESIDENTIAL 1 Cylinder Head Assembly SK4141050 2 Push Rod Tappet Kit SK4141001 3 Valve Cover Assembly SK4144500 ...
Page 24 - 14cc Electric Start Summer Engine Service Kit
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 23 1 Cylinder Head Assembly SK4141050 2 Push Rod Tappet Kit SK4141001 3 Valve Cover Assembly SK4144500 4 Choke Lever, Carburetor SK4142120 5 Piston Assembly SK4141400 6 Connecting Rod As...
Page 27 - 08cc Manual Start Snow Engine Service Kit
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 26 208cc Manual Start Snow Engine Service Kit PLMHK18650781DP-ABGOQUVE1M/S 1 Heater Box Assy SKSN0100 2 Shield, Heater Box SKSN0101 3 Snow Muffl er Assy SKSN0200 4 Snow Fuel Tank Assy SKS...
Page 28 - 08cc Electric Start Snow Engine Service Kit
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 27 208cc Electric Start Snow Engine Service Kit PLMHK18650781DE-ABGJOQUVYE1M/S 1 Heater Box Assy SKSN0100 2 Shield, Heater Box SKSN0101 3 Snow Muffl er Assy SKSN0200 4 Snow Fuel Tank Assy...
Page 29 - 91cc Manual/Electric Start Snow Engine Service Kit
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 28 1 Heater Box Assembly-Snow SKSN2100 3 Muffl er Assembly-Snow SKSN4200 4 Fue Tank Assembly-Snow SKSN4300 5 Fuel Tank Cap-Oversized (Click Style)-Snow SKSN4301 6 Carburetor Assembly-Snow...
Page 30 - 14cc Manual/Electric Start Snow Engine Service Kit
Rev:041310 Copyright © 2010 Liquid Combustion Technology, LLC LCT Engine Service Manual: 208cc, 291cc & 414cc 29 1 Heater Box Assembly-Snow SKSN4100 3 Muffl er Assembly-Snow SKSN4200 4 Fue Tank Assembly-Snow SKSN4300 5 Fuel Tank Cap-Oversized (Click Style)-Snow SKSN4301 6 Carburetor Assembly-Snow...