Cub Cadet ST23 manual

ST23 ST26 ST35 T rimmers Operator's Manual[...]

1 TABLE OF CONTENTS T able of Contents .............................................. 1 Foreword ........................................................... 1 Safety Precautions ............................................ 2 Metal Blade Use ................................................ 6 Decal Information ........................................[...]

2 SAFETY PRECAUTIONS GENERAL: 1. It is important that you read, fully understand and observe the following safety precautions and warnings. Read the Operator's Manual and the safety instructions periodically . 2. Do not lend or rent out your trimmer without the Operator’s Manual. Be sure that anyone using your trimmer understands the informa[...]

3 SAFETY PRECAUTIONS 2. Spectators, children, fellow workers and animals must be warned to stay back 50 feet (15m) while the trimmer is in use. Stop the engine and cutting head immediately if you are approached. 3. People working in the area near you should wear the same protective equipment as the operator . PREP ARATION FOR THE USE OF THE TRIMMER[...]

4 SAFETY PRECAUTIONS ST ARTING: Y our trimmer is a one-person machine. 1. Start and operate your trimmer without assis- tance. When starting, place the trimmer on firm ground or a solid surface in an open area. Maintain good balance and secure footing. 2. T o reduce the risk of injury from loss of control, be absolutely sure that the cutting head o[...]

5 SAFETY PRECAUTIONS immediately . The retaining bolt may be worn or damaged and should be replaced. Never use unauthorized parts to secure the blade. If the blade continues to loosen, see your Cub Cadet Commercial dealer . Never use a trimmer with a loose blade. 16. T o reduce the risk of personal injury from loss of control, do not use an incorre[...]

6 W ARNING Specified deflector shield, bicycle handle and shoulder harness MUST be used on brushcutter with metal blades. Operating the brushcutter without specified deflector , shield, bicycle handle, and shoulder harness can cause serious personal injury . W ARNING If blade is mounted improperly , it may come loose during operation and cause seri[...]

7 DECAL INFORMA TION WARNING LOCA TE THE SAFETY DECALS ON YOUR TRIMMER. MAKE SURE THE DECALS ARE LEGIBLE AND THA T YOU UNDER- ST AND AND FOLLOW THE INSTRUCTIONS ON THEM. DEFLECTOR DECAL: SHAFT DECALS: This trimmer can be can be dangerous and cause serious injury if improperly used. T o reduce injury risk to operator , helpers and bystanders, read a[...]

8 SPECIFICA TIONS Model ST23 ST26 ST35 Loop Handle Loop Handle Loop Handle Length (mm) 1783 1783 1818 (in.) 70.1 70.1 71.5 Width (mm) 260 260 260 (in.) 10.2 10.2 10.2 Height (mm) 250 264 277 (in.) 9.84 10.4 10.9 Weight (kg) 4.8 5.1 6.7 (lb.) 10.5 1 1.2 14.7 T ype of Engine Air-cooled, two-stroke, single cylinder gasoline engine. Bore (mm) 33 33 37 [...]

9 REF NO. DESCRIPTION 1 Gear Case 2 Grip 3 Throttle Wire 4 Throttle Lever 5 Hanger 6 Shoulder Band (Standard on ST35) 1 2 3 4 5 6 7 8 9 10 11 12 P ARTS DESCRIPTION REF NO. DESCRIPTION 7 Engine 8 Head/Blade 9 Deflector 10 Stop Switch 1 1 Drive Tube 12 Loop Handle • This unit can be dangerous and cause serious injury if improperly used. To reduce i[...]

10 TRIMMER ASSEMBL Y The trimmer is partly disassembled for ease of shipment and must be assembled before it can be used for the first time. W ARNING Because of the increased risk of accidents the powerhead must not be started while it is detached from the trimmer . 1 1. Mount the loop handle (Ref. 1) . A. MOUNTING THE LOOP HANDLE: 2. Position the [...]

11 TRIMMER ASSEMBL Y 2. Align the hole in the holder (Ref. 3) with the hole in the gear case (Ref. 2) and install the locking tool (Ref. 1). 3. Fit the nylon line trimmer head (Ref. 4) onto the shaft (turning it counterclockwise) until it is tight. 4. Remove the locking tool. Installing the Nylon Line T rimmer Head W ARNING Protect your hands with [...]

12 FUELING INSTRUCTIONS W ARNING Reread the Safety Precautions relating to “Handling Fuel” on Page 3. The Cub Cadet Commercial trimmer uses an oil- gasoline mixture as fuel. The engine is certified to operate on unleaded gasoline. Use regular name-brand unleaded gasoline with a minimum octane number of 89. If the octane number of the regular gr[...]

13 FUELING INSTRUCTIONS FUEL MIXTURE : When using Cub Cadet Commercial 50:1 2-cycle brand oil, or a quality oil designed for 2-cycle air- cooled engines, oil ratio is 50 parts gasoline to 1 part oil or 50:1. CAUTION Never use a mixing ratio greater than 50:1 regardless of the oil package mixing instructions. Ratios greater than 50:1,(for example, 6[...]

14 1 STOP ST ART OPERA TION A. ST ARTING: W ARNING Reread the Safety Precautions relating to “Starting” on Page 3. W ARNING When the engine starts, the cutting tool may rotate even with the throttle trigger in the low-speed position possibly causing injury . 1. When the Engine is Cold. a. Slide the ignition switch (Ref.1) to the “ST ART” po[...]

15 OPERA TION e. Put the unit on the ground: It must rest securely on the engine support and deflector . Check that the cutting tool is not touching the ground or any other obstacles. f. Make sure you have a firm footing: Hold the unit with your left hand and press it down firmly . Do not stand or kneel on the drive shaft. g. Pull the starter grip:[...]

16 1 STOP ST ART OPERA TION B. STOPPING: 1. Return the throttle to the “IDLE” position and let the engine run for 2 or 3 minutes until it has cooled down. 2. Slide the ignition switch (Ref.1) to the “STOP” position. W ARNING Reread the Safety Precautions relating to “Operation” on Page 4.[...]

17 MAINTENANCE NOTE: MAINTENANCE, REPLACEMENT , OR REP AIRE OF THE EMISSION CONTROL DEVICE AND SYSTEMS MA Y BE PERFORMED BY ANY NONROAD ENGINE REP AIRE EST ABLISHMENT OR INDIVIDUAL. MAINTENANCE CHART P ART MAINTENANCE BEFORE MONTHL Y YEARL Y IF IF SEE USE F AUL TY DAMAGED P AGE Complete Machine Visual Inspection X (Condition, Leaks) 24 Clean X Cont[...]

18 MAINTENANCE EMISSION P ARTS MAINTENANCE CHART Air Filter Clean X 21 Element Replace X Spark Plug Check / Clean / Adjust X 20 Replace X Carburetor Clean (*1) X 18,19 Overhaul (*2) / Replace (*3) X P ART MAINTENANCE BEFORE USE MONTHL Y or 50 HOURS USE THREE MONTHS or 150 HOURS USE SIX MONTHS or 300 HOURS USE YEARL Y or 600 HOURS USE SEE P AGE (*1)[...]

19 MAINTENANCE 6. Adjusting the idle speed: It is usually necessary to change the setting of the idle speed adjusting screw (Ref. I) after every correction to the low speed adjusting screw (Ref. L). 7. Proper idling speed: ST23,26............. 2,800-3,000 rpm ST35.................. 2,500-2,700 rpm 8. The engine stops while idling: T urn the idle sp[...]

20 1 2 MAINTENANCE 1. Maintain a wire end-play of about 1/16 inch (1- 2mm) with the adjuster and fix it with the tightening bolt (Ref.2). W ARNING T o reduce the risk of injury from loss of control, maintain the wire end-play at about 1/16 inch (1-2mm). If the wire end-play is not maintained, engine speed may be enough for the clutch to engage and [...]

21 D. CLEANING THE AIR FIL TER. Dirty air filters reduce engine power , increase fuel consumption and make starting more difficult. If there is a noticeable loss of engine power: MAINTENANCE ST23, 26 1 5 4 3 4 5 3 ST35 Air intake Air out flow Air out flow 1. T urn the choke lever (Ref. 1) to “CLOSE” . Loosen the screw (Ref. 2) and remove the ai[...]

22 MAINTENANCE Cylinder fins 2. Dust and grass build up on the outside of the cylinder . This buildup insulates the engine and prevents the heat from leaving. Removal of cooling passage blockages or cleaning of cylinder fins is considered “Normal Maintenance”. Any resultant failure attributed to lack of maintenance is not warranted. F . CLEANIN[...]

23 I. FUEL SYSTEM. MAINTENANCE 1. Change the fuel pick up body every year . 2. Before storing your machine for a long period, drain and clean the fuel tank and run the engine until the carburetor is dry . 3. The fuel tank and the container in which the fuel mix is stored should be cleaned from time to time. J. LUBRICA TING THE GEAR HEAD. Filler plu[...]

24 TROUBLESHOOTING GUIDE PROBLEM CAUSE SOLUTION No Fuel at Carburetor Fuel Filter Dirty Replace Fuel Line Clogged Clean Carburetor See your Cub Cadet dealer No Fuel at Cylinder Carburetor See your Cub Cadet dealer Muffler W et with Fuel Fuel Mixture is too Rich Open Choke Clean/Replace Air Filter Adjust Carburetor See your Cub Cadet dealer No Spark[...]

HOW TO ORDER PARTS Contact your Cub Cadet Commercial Salesperson, OR phone us (use the numbers below), OR write us (use the address below). We will need the following information: 1. Your account number if available. 2. Your name and address and the address where you want the parts to be shipped. 3. The Model/Serial No. of the equipment. 4. The Cub[...]

U. S. EP A EMISSION CONTROL WARRANTY ST A TEMENT YOUR W ARRANTY RIGHTS AND OBLIGA TIONS The U.S. Environmental Protection Agency (EP A), Cub Cadet Corporation and the engine manufacturer for this equipment, Ishikawajima Shibaura Machinery Co., Ltd. (ISM), are pleased to explain the federal emission control systems warranty on your engine. In the U.[...]

W ARRANTY ST A TEMENT (continued) Any warranted part which is scheduled for replacement as required maintenance is warranted for the period of time up to the point of first scheduled replacement. A replacement part installed prior to the first scheduled replacement due to a defect in the original part shall be warranted until the date of the first [...]

ST23 ST26 ST35 T rimmers Parts List[...]

1 ENGINE, ST23 TRIMMER 50 47 48 49 33 51 35 42 44 58 45 43 54 46 55 53 56 57 52 18 16 14 15 9 10 11 8 20 35 17 33 81 82 80 79 83 76 78 77 75 74 85 71 84 73 72 70 87 69 68 67 47 62 61 59 63 64 65 66 41 38 35 31 37 34 40 36 30 32 27 24 28 29 23 21 26 33 12 13 25 22 10 19 6 4 3 2 5 6 7 1 13 91 90 88 89[...]

2 1 IM-1 15253421 Crankshaft ........................ 1 2 IM-034309031 Key ................................... 1 3 IM-1 15013300 Piston Assembly (Includes 2 Ref. 4) ............................ 1 4 IM-1 151 13650 Ring, Piston ...................... 2 5 IM-1 15323130 Pin, Piston ........................ 1 6 IM-198343210 Clip, Piston Pin ............[...]

3 SHAFT , ST23 TRIMMER 2 7 8 4 5 1 41 3 6 38 40 39 28 29 11 10 12 13 9 54 53 56 57 55 52 51 32 30 33 31 Optional 58 35 36 37 50 14 10 20 21 22 26 27 16 15 20 23 24 25 17 19 47 49 48 18[...]

4 1 IM-7201 13160 Shaft, Drive ....................... 1 2 IM-720124320 Pipe, Complete (Includes 6 Ref. 3) ............................ 1 3 IM-720133160 Metal ................................. 6 4 IM-720203082 Hanger .............................. 1 5 IM-720973178 Bolt, M6x14 ....................... 1 6 IM-720623400 Grip ...........................[...]

1 ENGINE, ST26 TRIMMER 71 35 31 34 30 32 27 24 28 29 23 21 33 12 25 22 19 58 54 55 56 57 60 62 61 59 63 64 20 79 77 75 74 73 72 68 67 66 53 18 16 14 15 9 10 11 8 17 76 78 26 4 3 2 5 7 1 86 70 8 50 47 48 49 51 42 44 45 43 46 52 39 26 41 38 37 36 9 12 28 81 65 6 82 85 83 84 13 69[...]

2 1 IM-1 15253470 Crankshaft ........................ 1 2 IM-1 1501331 1 Piston Assembly (Includes 2 Ref. 3) ............................ 1 3 IM-1 151 13650 Ring, Piston ...................... 2 4 IM-1 15323040 Pin, Piston ........................ 1 5 IM-198343210 Clip, Piston Pin ................. 2 6 IM-042709008 Bearing, Needle ................ [...]

3 SHAFT , ST26 TRIMMER 54 14 10 20 21 22 26 27 16 15 20 23 24 25 17 18 19 43 45 44 32 31 30 33 11 10 12 13 9 13 28 29 2 3 7 8 4 5 1 6 50 49 52 53 51 48 47 35 36 37 46 Optional[...]

4 1 IM-7201 13160 Shaft, Drive ....................... 1 2 IM-720124330 Pipe, Complete (Includes 6 Ref. 3) ............................ 1 3 IM-720133160 Metal ................................. 6 4 IM-720203082 Hanger .............................. 1 5 IM-720973178 Bolt, M6x14 ....................... 1 6 IM-720623400 Grip ...........................[...]

1 ENGINE, ST35 TRIMMER 96 97 98 102[...]

2 1 IM-1 15253440 Crankshaft ........................ 1 2 IM-034309031 Key ................................... 1 3 IM-1 15013280 Piston Assembly (Includes 2 Ref. 4) ............................ 1 4 IM-1 151 13730 Ring, Piston ...................... 2 5 IM-1 15323030 Pin, Piston ........................ 1 6 IM-198343040 Clip, Piston Pin ............[...]

3 SHAFT , ST35 TRIMMER 49 48 51 50 53 52 Optional[...]

4 1 IM-7201 13120 Shaft, Drive ....................... 1 2 IM-720124290 Pipe, Complete (Includes 6 Ref. 3) ............................... 1 3 IM-720133061 Metal ................................. 6 4 IM-720203073 Hanger .............................. 1 5 IM-720973178 Bolt, M6x14 ....................... 1 6 IM-720623251 Grip ........................[...]

100814820. M2,5. F9. Sh. Printed in Japan.[...]