LawnMaster NPTGSS2617A Service Manual
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LawnMaster NPTGSS2617A Service Manual

26cc-2 cycle grass trimmer
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SERVICE MANUAL
26cc-2 Cycle Grass Trimmer
NPTGSS2617A
NPTGCP2617A
Read all safety rules and instructions carefully before servicing this tool.
601 Regent Park Court Greenville, SC 29607, 1-866-384-8432

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Summary of Contents for LawnMaster NPTGSS2617A

  • Page 1 SERVICE MANUAL 26cc-2 Cycle Grass Trimmer NPTGSS2617A NPTGCP2617A Read all safety rules and instructions carefully before servicing this tool. 601 Regent Park Court Greenville, SC 29607, 1-866-384-8432...

  • Page 2: Table Of Contents

    CONTENTS Section Page CONTENTS SPECIFICATIONS GENERAL SAFETY RULES PARTS AND FEATURES 6-12 WIRING DIAGRAM AND MANAGEMENT GENERAL TROUBLESHOOTING 14-22 AIR & FUEL SYSTEM 23-30 THROTTLE AND STARTER SYSTEM 31-33 NOPULL™ STARTER SYSTEM 34-37 26CC 2-CYCLE ENGINE GEAR HEAD AND SPOOL 39-43 MANUFACTURER'S WARRANTY AND CONTACT...

  • Page 3: Specifications

    SPECIFICATIONS UNIT SPECIFICATIONS Engine Engine Size 2-Stroke / Full Crank Engine Displacement 26cc Ignition Capacitor Discharge Ignition (CDI) Fuel System Carburetor All Position Diaphragm Type With Primer Bulb Air Filter Foam (Dry) Engine Shut Off Auto-Reset Throttle Control Variable Speed Trigger Fuel / Oil Ratio 40 : 1 Fuel Tank Capacity...
  • Page 4 LED light panel to starter switch base Tighten the screw (ST3.9×16F) securing the starter 9-13 1-1.5 switch pressing plate and the start button. Debris guard mounting bracket to 13-18 1.5-2 shaft (Straight shaft the debris guard mounting bracket to shaft. NPTGSS2617A only)

  • Page 5: General Safety Rules

    GENERAL SAFETY RULES SAFETY To protect the eyes from loose objects that could be thrown from the trimmer, always wear eye protection with side shields marked to comply with ANSI Z87.1 when operating the trimmer. Use only genuine manufacturer’s replacement parts for this product. Failure to do so may cause poor Scarfs, neckties, jewelry, jackets or other loose clothing and accessories should be avoided as they can be caught on or become entangled in the trimmer.

  • Page 6: Parts And Features

    PARTS AND FEATURES NPTGSS2617A EXPLODED VIEW...
  • Page 7 PARTS AND FEATURES NPTGSS2617A PARTS LIST Application Description Quantity Number 321001101 Cleva 26cc 2-Cycle Engine 321001102 Throttle-body & Starter Set 321001103 Throttle-body Set 321001104 Starter Set 2.2.1 321001105 Electric Switch 2.2.2 321001106 Starter Switch Assembly 2.2.3 321001107 Stop Switch Set 2.2.4...
  • Page 8 PARTS AND FEATURES NPTGCP2617A EXPLODED VIEW...
  • Page 9 PARTS AND FEATURES NPTGCP2617A PARTS LIST Application Description Quantity Number 321001101 Cleva 26cc 2-Cycle Engine 321001102 Throttle-body & Starter Set 321001103 Throttle-body Set 321001104 Starter Set 2.2.1 321001105 Electric Switch 2.2.2 321001106 Starter Switch Assembly 2.2.3 321001107 Stop Switch Set 2.2.4 321001108 PCB Assembly...
  • Page 10 PARTS AND FEATURES EXPLODED VIEW 26CC 2-CYCLE ENGINE...
  • Page 11 PARTS AND FEATURES 26CC 2-CYCLE ENGINE PART LIST Application Description Quantity Number 321001130 Spark Plug Cover 321001131 321001132 Upper Engine Cover 321001133 Logo 321001134 321002109 Cylinder Air Damper 321001136 321001137 321001138 Insulation Sheet 321001139 Spark Plug 321002110 Gasket 321002111 Ignition Coil Assembly 321002112 Positive Stop Switch Cable 321002113...
  • Page 12 PARTS AND FEATURES 321001155 Fuel Tank Bracket 321002126 Negative Stop Switch Cable 321001156 Lower Engine Cover 321002127 Crankshaft Set 321002128 Piston Ring 321002129 Piston 321002130 Retainer Ring 321002131 Retainer Ring 321002132 Needle bearing 321002133 Piston Pin 321002134 Crankcase Assembly 321002142 Flywheel 321002143 321002144...

  • Page 13: Wiring Diagram And Management

    WIRING DIAGRAM AND MANAGEMENT - IGNITION AND STARTING Push-Start 2S Battery Pack Starter Switch (Self-reset) Battery Connector VCC’ VCC’ Bullet Terminal(BL) Battery PCB ASSEMBLY Connector Electric Motor Handle Engine Bullet Terminal(BL) Ignition Handle Stop Switch(Self-reset) 3.5 Bullet Terminal 3.5 Bullet Terminal lgnition Coil Spark Plug...

  • Page 14: General Troubleshooting

    GENERAL TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION The electric motor does The battery is not fully Charge the battery fully and insert it not start, and the battery charged or not inserted correctly. correctly. The motor does not start, Allow the battery to cool to room The battery may be and the battery indicator temperature.
  • Page 15 GENERAL TROUBLESHOOTING Check if the piston ring sinters and the piston and piston ring wear status. Check Abnormal engine the carbon deposit status in combustor. compression. Check the wear status inside cylinder. Check if the spark plug loosens. Remove the spark plug. Crimp the fuel line to prevent fuel entering.
  • Page 16 GENERAL TROUBLESHOOTING Electrode of the spark plug Replace the spark plug. is burnt out. High voltage line of the Replace the high voltage line. ignition coil is broken. Stator of the ignition coil is Replace the stator. broken or burnt out. Poor contact of the high voltage line and the jump Repair.
  • Page 17 GENERAL TROUBLESHOOTING Idle speed is too high. Adjust the engine. After release the throttle Clutch spring is broken. Replace. lever, the trimmer head Clutch friction plate is rotates at idle. Replace. broken. The engine accelerates, Spline of the drive shaft or but the trimmer head does the spline of the transmission Replace.
  • Page 18 GENERAL TROUBLESHOOTING Engine Compression (See Figs. 1-3) Low compression will cause erratic idling, low power, and hard starting when hot. To test the engine compression: the wrench counter-clockwise to remove the spark plug (Fig. 2). Fig. 1 Fig. 2 Place the choke lever in the RUN position. Engage the throttle safety and throttle trigger together to open the throttle and the choke lever in the on position.
  • Page 19 GENERAL TROUBLESHOOTING the carbon deposit in the spark plug. The spark plug gap should be 0.65±0.05mm. Inspect the electrodes for wear and deposits (Fig. 7). (Fig. 8). in. (0.30-0.40 mm) as instructed in step 3 of the Ignition Coil Replacement section (Fig. 9). Feeler Gauge Outer Electrode 0.026 in.
  • Page 20 GENERAL TROUBLESHOOTING Clutch Replacement (See Figs. 12-18) Bolts Fig. 12 Fig. 13 Flat Washers Fig. 14 Fig. 15 washers into the clutch, with the side of the clutch marked with the direction of rotation facing upwards (Fig. 16). Corrugated Washers Fig.
  • Page 21 GENERAL TROUBLESHOOTING for 3-5 screw threads and then re-install the clutch (Fig. 17 & 18). Fig. 17 Fig. 18 Flywheel (Rotor) Replacement (See Figs. 19-22) Fig. 19 Fig. 20 counter-clockwise to its 1/4 to 1/2 length. Ensure the screw rods are protruded longer than screw rod .
  • Page 22 GENERAL TROUBLESHOOTING Fig. 21 Fig. 22...

  • Page 23: Air & Fuel System

    AIR & FUEL SYSTEM Air Filter Replacement (See Figs. 23-26) Air Filter Cover Air Filter Cover Air Filter Air Filter Knob Fig. 23 Fig. 24 correctly will decrease the chances of engine wear caused by dirt entering the engine (Fig. 25). Fig.
  • Page 24 AIR & FUEL SYSTEM T Screw L Screw H Screw Fig. 27 Fig. 28 H screw counter-clockwise 1/4 turn. To adjust the carburetor, a tachometer is needed (Fig. 29). When testing the speed, the tachometer should be placed near the spark plug of the trimmer. CLOCK SET RESET Fig.
  • Page 25 AIR & FUEL SYSTEM Max speed NPTGSS2617A (straight shaft) About 9000-9300RPM NPTGCP2617A (curved split About 7500-7800RPM shaft) CLOCK SET CLOCK SET RESET RESET Fig. 30 Fig. 31 the throttle trigger quickly to operate the trimmer at full throttle, and observe the RPM displayed on clockwise using the screwdriver.
  • Page 26 AIR & FUEL SYSTEM again. Make sure they are correct (Fig. 33). CLOCK SET CLOCK SET RESET RESET Fig. 33 General Fuel Systems Operations (See Figs. 34-50) Carburetor Replacement Fig. 34 Fig. 35 Fig. 36 entering. The black tube is for fuel entering. The transparent is for fuel return (Fig. 37). Fuel Tube (Black) Fuel Return Tube (Transparent)
  • Page 27 AIR & FUEL SYSTEM necessary. Place the washer correctly with the hole upwards. Align the hole on washer with the hole on carburetor mount (Fig. 38 & 39). NOTE: were removed. Carburetor washer with hole upwards Fig. 38 Fig. 39 Fig.
  • Page 28 AIR & FUEL SYSTEM replace if needed. (Fig. 42). Fig. 42 Fuel Tank Replacement screwdriver (Fig. 43 & 44). Fig. 43 Fig. 44 46). Fig. 45 Fig. 46 NOTE: If only replacing the fuel tank, do not remove the carburetor. Just remove the fuel tubes from the carburetor.
  • Page 29 AIR & FUEL SYSTEM Fig. 47 Fig. 48 Fig. 49 NOTE: Insert the Fuel Tube Connect the fuel tubes with the carburetor. The black tube is for fuel entering. The transparent is for fuel return. The fuel tubes should be connected to the turning position as shown (Fig. 50). NOTE: Do not damage or fold the fuel tubes.
  • Page 30 AIR & FUEL SYSTEM Exhaust System Service (See Figs. 51-54) Fig. 51 Fig. 52 NOTE: Do not allow the carbon deposit to fall into the cylinder when removing the buildup (Fig. 54). Fig. 53 Fig. 54...

  • Page 31: Throttle And Starter System

    THROTTLE AND STARTER SYSTEM Disassembly, Inspection & Repair of Throttle and Starter System (See Figs. 55-66) LED Light Cable Fig. 55 Fig. 56 starter cover plate. Remove the cable tie. A new cable tie is needed for reassembly (Fig. 57). LED Light Cable Cable Tie...
  • Page 32 THROTTLE AND STARTER SYSTEM ensure that terminals of the LED cable are connected in place (Fig. 59). the shaft in the direction of the arrow to place the protrusion on the retainer into the position hole on the shaft. Fasten the retainer with a new cable tie (Fig. 60). Position hole on the retainer Position hole on the shaft...
  • Page 33 THROTTLE AND STARTER SYSTEM Fig. 63 Fig. 64 the engine cover. the corrugated pipe buckle must be connected tightly, without any warp or twist. Fig. 65 Fig. 66...

  • Page 34: Nopull™ Starter System

    NOPULL STARTER SYSTEM Special troubleshooting instructions for No-Pull™ Start Button (See Figs. 67-74) Starting Operation Lift the start button cover and press the start button to start the electric motor. Release the start button to stop the electric motor (Fig. 67). NOTE: When the start button remains pressed, the electric motor will run for about 5 seconds then it will stop automatically.
  • Page 35 NOPULL STARTER SYSTEM charged. Check the electric motor and the motor drive lines as below: Open the corrugated pipe buckle and disconnect the male and female terminals of the motor drive the short circuit occurs in the motor drive lines of the handle. Terminals of Black (-) motor drive...
  • Page 36 NOPULL STARTER SYSTEM F. If the battery indicator LED does not turn on, the possible causes are as below: 1). The microswitch is broken. Replace it. 2). The wiring harness of the microswitch has detached. Re-weld it. 3). There is failed contact in the battery connector to the PCB. Adjust the battery connector (Fig. 71).
  • Page 37 NOPULL STARTER SYSTEM male and female terminals in the corrugated pipe buckle; 3). The stop switch has broken. Fig. 73 B. Test the stop switch wiring harness of the engine (Fig. 74). If conduction fails, the possible causes are: 1). An open circuit in the connection position between the wiring harness of the engine and the ignition coil;...

  • Page 38: 26Cc 2-Cycle Engine

    26CC 2-CYCLE ENGINE Internal Engine Disassembly Inspection & Repair Engine Start Requirements and Inspection carburetor intake. Engine Disassembly and Inspection deposits. Adjust the spark plug gap (0.65±0.05mm). motor is broken; test if the wires are in good condition and the gears are in working order. if leakage occurs.

  • Page 39: Gear Head And Spool

    GEAR HEAD AND SPOOL Gear Head (See Fig. 75) The gear head of the straight shaft grass trimmer (NPTGSS2617A) has a left hand rotation (Fig. 75). The gear head of the split shaft grass trimmer (NPTGCP2617A) has a right hand rotation.
  • Page 40 Fig. 78 SPOOL REPLACEMENT (See Figs. 79-85) Straight shaft grass trimmer (NPTGSS2617A) - Rapid Reload™ Spool the trimmer head housing. Then remove the trimmer head cover (Fig. 79). NOTE: It is not necessary to remove the trimmer head housing from the drive shaft.
  • Page 41 Make sure they are secured tightly (Fig. 85). Locking tabs on the trimmer head Eyelet housing Fig. 84 Fig. 85 LINE REPLACEMENT (See Figs. 86-91) Straight shaft grass trimmer (NPTGSS2617A) - Rapid Reload™ Spool line in the spool. trimmer head cover as shown (Fig. 86). NOTE:...
  • Page 42 GEAR HEAD AND SPOOL (5m) for 0.095” line. First insert one end of the line into the eyelet on the trimmer head housing and the spool in the trimmer head. Fully insert the line until you feel it stop and cannot be inserted any further.
  • Page 43 GEAR HEAD AND SPOOL Fig. 89 (Fig. 91). Winding Direction (RH) (RH) Fig. 90 Fig. 91 Install the spool in the spool cover.

  • Page 44: Manufacturer's Warranty And Contact

    No-Pull LIMITED WARRANTY We take pride in producing a high quality, durable product. This LawnMaster® product carries a limited three (3) year warranty against defects in workmanship and materials from date of purchase under normal household use. This product carries a ninety (90) day warranty from the date of purchase when used for commercial or rental purposes.

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