Table of Contents
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TC3, 4, 5000 GAS TRIMMER, MODELS 51643, 51644, 51645
Table of Contents – Page 1 of 4
ABOUT THIS MANUAL
SAFETY INFORMATION
FOR YOUR SAFETY...
SPECIFICATION
TOOL REQUIREMENTS:
TROUBLESHOOTING
MAINTENANCE
MAINTENANCE - AIR CLEANER
MAINTENANCE - MUFFLER
MAINTENANCE - SPARK PLUG
MAINTENANCE - FUEL FILTER
MAINTENANCE - COOLING SYSTEM
MAINTENANCE - TRIMMER IMPLEMENT
MAINTENANCE - PREPARATION FOR STORAGE
MAINTENANCE - GEARBOX LUBRICATION
SECTION 1 CARBURETOR
CARBURETOR OPERATION
CARBURETOR OPERATION - THE DIAPHRAGM PUMP
CARBURETOR OPERATION - FUEL METERING & MIXING
CARBURETOR OPERATION - THE PRIMER SYSTEM
CARBURETOR - REMOVAL
CARBURETOR - DISASSEMBLY
CARBURETOR - REASSEMBLY
CARBURETOR - INSTALLATION
CARBURETOR ADJUSTMENT - IDLE SPEED
CARBURETOR ADJUSTMENT - MIXTURE
CARBURETOR ADJUSTMENT - THROTTLE VALVE
SECTION 2 FUEL SYSTEM
FUEL TANK - FUEL TANK - REMOVAL
FUEL TANK - INSTALLATION
PRIMER PUMP - PRIMER PUMP - PROPER USE
PRIMER PUMP - OPERATION
PRIMER PUMP - DISASSEMBLY
PRIMER PUMP - INSPECTION
PRIMER PUMP - REASSEMBLY
FUEL PICKUP TUBE AND FILTER - SERVICE
FUEL CAP - FUEL CAP - OPERATION
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Summarization of Contents
SAFETY INFORMATION
FOR YOUR SAFETY...
Safety precautions for operation and maintenance.
SPECIFICATIONS
Engine Specifications
Technical data for TC3000, TC4000, TC5000 engines.
TC3000 and TC4000 Service Specifications
Service specifications for TC3000 and TC4000 models.
TC3000 and TC4000 Service Specifications (Cont'd)
Continued service specifications for TC3000 and TC4000.
TC5000 Service Specifications
Service specifications for TC5000 model.
Carburetor Specifications
Technical specifications for the carburetor.
Fastener Torques
Torque values for various fasteners in the assembly.
TROUBLESHOOTING
Engine Does Not Produce Spark
Diagnosing and fixing no-spark issues in the engine.
Engine Floods During Starting
Diagnosing and fixing engine flooding during startup.
Engine Not Getting Fuel
Diagnosing and fixing engine fuel supply issues.
Engine Lacks Power
Diagnosing and fixing engine power loss.
Engine Has Low Compression
Diagnosing and fixing low engine compression issues.
Engine Backfires (indicated by burnt air cleaner element)
Diagnosing engine backfiring indicated by air cleaner.
Trimmer Vibrates Excessively
Diagnosing and fixing excessive trimmer vibration.
MAINTENANCE
Maintenance - Air Cleaner
Servicing the air cleaner for optimal performance.
Maintenance - Muffler
Decarbonizing or replacing the muffler.
Maintenance - Spark Plug
Inspecting, gapping, and replacing the spark plug.
Maintenance - Fuel Filter
Replacing the fuel filter element.
Maintenance - Cooling System
Inspecting cooling air inlet, fins, and openings for debris.
Maintenance - Trimmer Implement
Cleaning the trimmer implement and drive shaft area.
Maintenance - Preparation for Storage
Procedures for storing the trimmer for extended periods.
Maintenance - Preparation for Storage (cont'd)
Continued steps for preparing the trimmer for storage.
Maintenance - Gearbox Lubrication
Lubricating the cutter head gearbox.
SECTION 1 CARBURETOR
Carburetor Operation
Explanation of how the diaphragm style carburetor works.
Carburetor Operation - The Diaphragm Pump
How the diaphragm pump moves fuel using crankcase pulses.
Carburetor Operation - Fuel Metering & Mixing
How fuel is metered and mixed with air for combustion.
Carburetor Operation - The Primer System
How the primer system ensures fuel for cold starts.
Carburetor - Removal
Step-by-step procedure for removing the carburetor.
Carburetor - Disassembly
Detailed steps for disassembling the carburetor.
Carburetor - Reassembly
Steps for reassembling the carburetor.
Carburetor - Installation
Procedure for installing the reassembled carburetor.
Carburetor Adjustment - Idle Speed
Adjusting the engine idle speed.
Carburetor Adjustment - Throttle Valve
Adjusting the throttle valve linkage and operation.
SECTION 2 FUEL SYSTEM
Fuel Tank - Removal
Steps to remove the fuel tank from the trimmer.
Fuel Tank - Installation
Steps to install the fuel tank onto the trimmer.
PRIMER PUMP
Information regarding the primer pump system.
Primer Pump - Proper Use
Correct procedure for using the primer pump.
Primer Pump - Operation
Explanation of how the primer pump operates.
Primer Pump - Disassembly
Steps for disassembling the primer pump assembly.
Primer Pump - Inspection
Inspecting disassembled primer pump parts for damage.
Primer Pump - Reassembly
Steps for reassembling the primer pump.
Fuel Pickup Tube and Filter - Service
Inspecting and servicing the fuel pickup tube and filter.
FUEL CAP
Information regarding the fuel tank cap.
Fuel Cap - Operation
Explanation of how the fuel cap's valve system works.
Fuel Cap - Inspection
Inspecting the fuel cap for proper venting and function.
Fuel Cap - Disassembly
Steps for disassembling the fuel cap.
Fuel Cap - Reassembly
Steps for reassembling the fuel cap.
SECTION 3 IGNITION
Ignition Operation
Overview of ignition system components and their roles.
Ignition Operation - Flywheel
How the flywheel magnets generate electricity.
Ignition Operation - Ignition Coil
Function of the ignition coil as a transformer.
Ignition Operation - Trigger Module
How the trigger module amplifies voltage for spark.
AIR GAP ADJUSTMENT
Adjusting the air gap between coil and flywheel magnets.
Ignition Operation - Spark Plug
Function and construction of the spark plug.
TC3000/TC4000 Air Gap Adjustment - Preparation
Preparation steps for adjusting TC3000/TC4000 air gap.
TC3000/TC4000 Air Gap Adjustment
Procedure for adjusting the air gap on TC3000/TC4000.
TC3000/TC4000 Air Gap Adjustment - Reassembly
Reassembly steps after TC3000/TC4000 air gap adjustment.
TC5000 Air Gap Adjustment - Preparation
Preparation steps for adjusting TC5000 air gap.
TC5000 Air Gap Adjustment
Procedure for adjusting the air gap on TC5000.
TC5000 Air Gap Adjustment - Reassembly
Reassembly steps after TC5000 air gap adjustment.
Coil - Removal
Steps for removing the ignition coil.
Coil - Installation
Steps for installing the ignition coil.
SECTION 4 RECOIL STARTER
Recoil Starter - Operation
Explanation of how the recoil starter mechanism works.
Recoil Mechanism - Removal
Steps for removing the recoil starter unit.
Recoil Mechanism - Disassembly
Steps for disassembling the recoil starter mechanism.
Recoil Mechanism - Reassembly
Steps for reassembling the recoil starter mechanism.
Recoil Mechanism - Installation
Steps for installing the recoil starter mechanism.
Starter Pulley - Removal
Starter Pulley - Installation
Steps for installing the starter pulley.
SECTION 5 CLUTCH SHOES AND FLYWHEEL
Clutch Shoes and Flywheel - Operation
Explanation of centrifugal clutch operation.
Clutch Shoes and Flywheel - Inspection
Inspecting clutch pads, drum, and flywheel magnets.
Clutch Shoes and Flywheel - Disassembly
Steps for disassembling the clutch shoes and flywheel.
Clutch Shoes and Flywheel - Reassembly
Steps for reassembling the clutch shoes and flywheel.
Clutch Shoes and Flywheel - Removal
Steps for removing the clutch shoes and flywheel.
CLUTCH DRUM and CLUTCH HOUSING
Information on clutch drum and housing.
Clutch Drum and Clutch Housing - Disassembly
Steps for disassembling the clutch drum and housing.
Clutch Drum and Clutch Housing - Reassembly
Steps for reassembling the clutch drum and housing.
ISOLATION MOUNT (TC4000 and TC5000 only)
Information on the vibration isolation mount.
Isolation Mount - Operation
Explanation of how the isolation mount reduces vibration.
Isolation Mount - Disassembly
Steps for disassembling the isolation mount.
Isolation Mount - Reassembly
Steps for reassembling the isolation mount.
SECTION 6 ENGINE
Engine - Operation
Explanation of the two-stroke, port-to-port engine design.
Engine - Removal From Drive Tube
Steps for removing the engine from the drive tube.
Engine - Disassembly
Detailed steps for disassembling the engine.
Engine - Cleaning After Disassembly
Cleaning engine parts after disassembly.
Engine - Inspection
Inspecting engine parts for wear and damage.
Engine - Reassembly
Steps for reassembling the engine.
Engine - Installation on Drive Tube
Steps for installing the engine onto the drive tube.
SECTION 7 CONTROLS
Control - Disassembly
Steps for disassembling the throttle control unit.
Control - Reassembly
Steps for reassembling the throttle control unit.
Grip - Removal
Steps for removing the grip from the handle.
Grip - Installation
Steps for installing the grip onto the handle.
SECTION 8 HANDLE
TC3000 Handle - Removal from Drive Tube
Steps for removing the TC3000 handle.
TC3000 Handle - Installation on Drive Tube
Steps for installing the TC3000 handle.
TC3000 Handle - Adustment
Adjusting the TC3000 handle height.
TC4000 Handle - Removal From Tube
Steps for removing the TC4000 handle.
TC4000 Handle - Installation on Drive Tube
Steps for installing the TC4000 handle.
TC4000 Handle - Adjustment
Adjusting the TC4000 handle for optimal position.
TC5000 Handle - Removal From Drive Tube
Steps for removing the TC5000 handle from the drive tube.
TC5000 Handle - Installation on Drive Tube
Steps for installing the TC5000 handle onto the drive tube.
TC5000 Handle - Adjustment
Adjusting the TC5000 handle for optimal position.
SECTION 9 SHIELD
Shield - Removal from Drive Tube
Steps for removing the shield from the drive tube.
Shield - Installation on Drive Tube
Steps for installing the shield onto the drive tube.
Shield - Mounting Cutter Knife on Shield
Mounting a cutter knife onto the shield for line length.
SECTION 10 GEARBOX
Gearbox - Removal
Steps for removing the gearbox.
Gearbox - Installation on Drive Tube
Steps for installing the gearbox onto the drive tube.
Gearbox - Seal Removal
Steps for removing the gearbox seal.
Gearbox - Seal Installation
Steps for installing the gearbox seal.
SECTION 11 DRIVE SHAFT AND TUBE
DRIVE SHAFT
Information on the drive shaft.
Drive Shaft - Removal
Steps for removing the drive shaft.
Drive Shaft - Installation
Steps for installing the drive shaft.
DRIVE TUBE - Removal
Steps for removing the drive tube.
Drive Tube - Installation
Steps for installing the drive tube.
SECTION 12 LEECO® MANUAL FEED HEAD
Leeco® Manual Feed Head - Spool Removal
Steps for removing the spool from the Leeco head.
Leeco® Manual Feed Head - Line Replacement
Procedure for replacing trimmer line in the Leeco head.
Leeco® Manual Feed Head - Line Replacement (cont'd)
Continued procedure for replacing trimmer line.
Leeco® Manual Feed Head - Spool Installation
Steps for installing the spool onto the Leeco head.
Leeco® Manual Feed Head - Disassembly
Steps for disassembling the Leeco manual feed head.
Leeco® Manual Feed Head - Inspection
Inspecting Leeco head components for damage.
Leeco® Manual Feed Head - Reassembly
Steps for reassembling the Leeco manual feed head.
SECTION 13 KAAZ® MANUAL FEED HEAD
Kaaz® Manual Feed Head - Line Replacement
Procedure for replacing trimmer line in the Kaaz head.
Kaaz® Manual Feed Head - Disassembly
Steps for disassembling the Kaaz manual feed head.
Kaaz® Manual Feed Head - Reassembly
Steps for reassembling the Kaaz manual feed head.
SECTION 14 PLASTIC FIXED LINE HEAD
Plastic Fixed Line Head - Removal
Steps for removing the plastic fixed line head.
Plastic Fixed Line Head - Line Replacement
Procedure for replacing trimmer line in the plastic head.
Plastic Fixed Line Head - Installation
Steps for installing the plastic fixed line head.
SECTION 15 METAL FIXED LINE HEAD
Metal Fixed Line Head - Line Replacement
Procedure for replacing trimmer line in the metal head.
Metal Fixed Line Head - Removal
Steps for removing the metal fixed line head.
Metal Fixed Line Head - Installation
Steps for installing the metal fixed line head.
SECTION 16 TAP AND TRIM® HEAD
TAP AND TRIM® LINE REPLACEMENT
Procedure for replacing trimmer line in the Tap and Trim head.
Tap and Trim® Spool - Removal
Steps for removing the Tap and Trim spool.
Tap and Trim® Spool - Line Replacement
Procedure for winding new line onto the Tap and Trim spool.
Tap and Trim® Spool - Installation
Steps for installing the Tap and Trim spool.
Tap and Trim® Head - Disassembly
Steps for disassembling the Tap and Trim head.
Tap and Trim® Head - Inspection
Inspecting the Tap and Trim head for damage.
Tap and Trim® Head - Reassembly
Steps for reassembling the Tap and Trim head.
SECTION 17 METAL BLADES
Metal Blade - Removal
Steps for removing a metal blade.
Metal Blade - Installation
Steps for installing a metal blade.
SECTION 18 HARNESSES
Standard and Deluxe Harness - Assembly
Steps for assembling and adjusting the trimmer harness.
SECTION 19 Spark Arrestor Muffler
Spark Arrestor Muffler - Removal
Steps for removing the spark arrestor muffler.
Spark Arrestor Muffler - Installation
Steps for installing the spark arrestor muffler.
Spark Arrestor Muffler - Maintenance
Maintenance procedures for the spark arrestor muffler.
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