SK350 Operator’s Manual CMW® Issue 3.
SK350 Operator’s Manual Overview - 1 Overview Chapter Contents Serial Number Location . . . . . . . . . . . . . . . . . . . . . . 2 Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Unit Components . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Operator Orientation. . . . . . . . . . . . . . . . . . . . . . . . . 4 About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . 4 • Bulleted Lists. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SK350 Operator’s Manual Overview - 2 Serial Number Location Serial Number Location Record serial numbers and date of purchase in spaces provided. Unit serial number is located as shown.
SK350 Operator’s Manual Overview - 3 Intended Use Intended Use The SK350 is a platform rubber track mini skid steer unit designed for compact construction work. The SK350 has a quick attach mount plate which makes it easy for an operator to connect different attachments. The unit is designed for operation in temperatures typically experienced in earth moving and construction work environments. Provisions may be required to operate in extreme temperatures. Contact your Ditch Witch dealer.
Overview - 4 SK350 Operator’s Manual Operator Orientation Operator Orientation 1. Front of unit 2. Right side of unit 3. Rear of unit 4. Left side of unit About This Manual This manual contains information for the proper use of this machine. Cross references such as “See page 50” will direct you to detailed procedures. Bulleted Lists Bulleted lists provide helpful or important information or contain procedures that do not have to be performed in a specific order.
SK350 Operator’s Manual Foreword - 5 Foreword This manual is an important part of your equipment. It provides safety information and operation instructions to help you use and maintain your Ditch Witch equipment. Read this manual before using your equipment. Keep it with the equipment at all times for future reference. If you sell your equipment, be sure to give this manual to the new owner. If you need a replacement copy, contact your Ditch Witch dealer.
SK350 Operator’s Manual Foreword - 6 SK350 Operator’s Manual Issue number 3.1/OM-7/14 Part number 054-137 Copyright 2005, 2006, 2007, 2008, 2011, 2014 by The Charles Machine Works, Inc. , Ditch Witch, CMW, AutoCrowd, Modularmatic, Jet Trac, Roto Witch, Subsite, Fluid Miser, Perma-Soil, Power Pipe, Super Witch, Super Witch II, Pierce Airrow, The Underground, and The Underground Authority Worldwide are registered trademarks of The Charles Machine Works, Inc.
SK350 Operator’s Manual Contents - 7 Contents Overview 1 machine serial number, information about the type of work this machine is designed to perform, basic machine components, and how to use this manual Foreword 5 part number, revision level, and publication date of this manual, and factory contact information Safety 9 machine safety alerts and emergency procedures Controls 19 machine controls, gauges, and indicators and how to use them Prepare 23 procedures for inspecting and classifying
Contents - 8 CMW SK300 Operator’s Manual
SK350 Operator’s Manual Safety - 9 Safety Chapter Contents Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Safety Alert Classifications . . . . . . . . . . . . . . . . . . 11 Safety Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Emergency Procedures . . . . . . . . . . . . . . . . . . . . . 15 • Electric Strike Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 • If an Electric Line is Damaged . . . . . . . . . . . . .
Safety - 10 SK350 Operator’s Manual Guidelines Guidelines Follow these guidelines before operating any jobsite equipment: • Complete proper training and read operator’s manual before using equipment. • Contact your local One-Call (811 in USA) or the One-Call referral number (888-258-0808 in USA and Canada) to have underground utilities located before digging. Also contact any utilities that do not participate in the One-Call service.
SK350 Operator’s Manual Safety - 11 Safety Alert Classifications Safety Alert Classifications These classifications and the icons defined on the following pages work together to alert you to situations which could be harmful to you, jobsite bystanders or your equipment. When you see these words and icons in the book or on the machine, carefully read and follow all instructions. YOUR SAFETY IS AT STAKE. Watch for the three safety alert levels: DANGER, WARNING and CAUTION. Learn what each level means.
SK350 Operator’s Manual Safety - 12 Safety Alerts Safety Alerts Moving digging teeth will kill you or cut off arm or leg. Stay away. Turning shaft will kill you or crush arm or leg. Stay away. Electric shock. Contacting electric lines will cause death or serious injury. Know location of lines and stay away. Deadly gases. Lack of oxygen or presence of gas will cause sickness or death. Provide ventilation. Jobsite hazards could cause death or serious injury. Use correct equipment and work methods.
SK350 Operator’s Manual Safety - 13 Safety Alerts Explosion possible. Serious injury or equipment damage could occur. Follow directions carefully. Incorrect procedures could result in death, injury, or property damage. Learn to use equipment correctly. Improper control function could cause death or serious injury. If control does not work as described in instructions, stop machine and have it serviced. Looking into fiber optic cable could result in permanent vision damage.
SK350 Operator’s Manual Safety - 14 Safety Alerts Tipover possible. Machine can tip over and crush you. • Always operate with load end uphill. • Always carry load low. High load can cause tipping, loss of load or loss of visibility. • Never jerk control levers. Use a steady even motion. • See operator’s manual for tip capacity. Flying objects may cause injury. Wear hard hat and safety glasses. Hot parts may cause burns. Do not touch until cool. Exposure to high noise levels may cause hearing loss.
SK350 Operator’s Manual Safety - 15 Emergency Procedures Emergency Procedures Before operating any equipment, review emergency procedures and check that all safety precautions have been taken. EMERGENCY SHUTDOWN - Turn ignition switch to STOP. Electric Strike Description When working near electric cables, remember the following: • Electricity follows all paths to ground, not just path of least resistance. • Pipes, hoses, and cables will conduct electricity back to all equipment.
Safety - 16 SK350 Operator’s Manual Emergency Procedures If an Electric Line is Damaged If you suspect an electric line has been damaged and you are on tractor, DO NOT MOVE. Remain on tractor and take the following actions. The order and degree of action will depend upon the situation. • Warn people nearby that an electric strike has occurred. Instruct them to leave the area and contact utility. • Raise attachments and drive from immediate area. • Contact utility company to shut off power.
SK350 Operator’s Manual Safety - 17 Emergency Procedures If a Fiber Optic Cable is Damaged Do not look into cut ends of fiber optic or unidentified cable. Vision damage can occur. If Machine Catches on Fire Perform emergency shutdown procedure and then take the following actions. The order and degree of action will depend on the situation. • Immediately move battery disconnect switch (if equipped) to disconnect position.
Safety - 18 SK350 Operator’s Manual Emergency Procedures CMW
SK350 Operator’s Manual Controls - 19 Controls 1. Throttle 7. Attachment drive control 2. Choke 8. Ignition switch 3. Left track drive control 9. Jumper terminal 4. Right track drive control 10. Attachment drive foot control 5. Tachometer/Hourmeter 11. Parking brake lever 6.
SK350 Operator’s Manual Controls - 20 Item Description Notes 1. Throttle To increase engine speed, push. Increasing engine speed also increases attachment speed. To decrease engine speed, pull. NOTICE: Always stop engine at full throttle. 2. Choke To help start cold engine, pull knob. When engine has warmed, push in completely. 3. Left track drive control To move forward, push. To turn right, move left control forward and right control back. To move backward, pull.
SK350 Operator’s Manual Controls - 21 Item Description Notes 5. Tachometer/Hourmeter Displays engine speed and operating time. Use hourmeter to schedule service. Flashes “Lube & Chg Oil” alerts for 2 hours at 25-hour intervals. 6. Lift arm control To move lift arms down, push. IMPORTANT: To float, push forward to end. • Do not exceed rated operating capacity when lifting loads. See page 68. • In float, weight of attachment allows attachment to follow ground contour.
SK350 Operator’s Manual Controls - 22 Item Description Notes 10. Attachment drive foot control Attachment drive control handle must be engaged before using the foot pedal. IMPORTANT: Use this control to hold attachment control in the on position when hands are busy operating lift arm controls or track drive. To hold attachment drive in forward position, press pedal. To return attachment drive control to neutral, release pedal. 11. Parking brake lever CMW To disengage, push down.
SK350 Operator’s Manual Prepare - 23 Prepare Chapter Contents Gather Information . . . . . . . . . . . . . . . . . . . . . . . . . 24 • All Jobs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 • Ground-Penetrating Jobs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 • Above-Ground Jobs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Inspect Site . . . . . . . . . . . . . . . . . . . . . . .
Prepare - 24 SK350 Operator’s Manual Gather Information Gather Information A successful job begins before you start working. The first step in planning is reviewing information already available about the job and jobsite. All Jobs Review Job Plan Review blueprints or other plans. Check for information about existing or planned structures, elevations, or proposed work that may be taking place at the same time.
SK350 Operator’s Manual Prepare - 25 Inspect Site Inspect Site Inspect jobsite before transporting equipment. Check for the following: • changes in elevation such as hills or other open trenches • obstacles such as buildings, railroad crossings, or streams • signs of utilities (See “Inspect Jobsite” on page 26.) • traffic • access • soil type and condition Identify Hazards Identify safety hazards and classify jobsite if attachment will penetrate ground. See “Classify Jobsite” on page 26.
Prepare - 26 SK350 Operator’s Manual Classify Jobsite Classify Jobsite Inspect Jobsite • Inspect jobsite and perimeter for evidence of underground hazards, such as: – “buried utility” notices – utility facilities without overhead lines – gas or water meters – junction boxes – drop boxes – light poles – manhole covers – sunken ground • Follow U.S. Department of Labor regulations on excavating and trenching (Part 1926, Subpart P) and other similar regulations.
SK350 Operator’s Manual Prepare - 27 Classify Jobsite Apply Precautions Once classified, precautions appropriate for jobsite must be taken. Electric Jobsite Precautions Use one or both of these methods. • Expose line by careful hand digging or soft excavation. • Have service shut down while work is in progress. Have electric company test lines before returning them to service.
Prepare - 28 SK350 Operator’s Manual Check Supplies and Prepare Equipment Check Supplies and Prepare Equipment Supplies • fuel • keys • lubricants • personal protective equipment, such as hard hat and safety glasses Fluid Levels • fuel • hydraulic fluid • battery charge • engine oil Condition and Function • digging chain and teeth • filters (air, oil, hydraulic) • tracks • pumps and motors • hoses and valves • signs, guards, and shields Accessories Fire Extinguisher If required
SK350 Operator’s Manual Prepare - 29 Connect Attachment Connect Attachment IMPORTANT: Use only Ditch Witch-approved attachments. Attachments can change the stability and operating characteristics of the unit. Attachment IMPORTANT: Before connecting attachment to unit, ensure that mount and receiver plates are free of dirt and debris. 1. Position attachment on level surface with enough space behind it to accommodate unit. 2.
SK350 Operator’s Manual Prepare - 30 Connect Attachment Hydraulic Hoses If attachment requires hydraulic power for operation, connect hydraulic hoses. Fluid or air pressure could pierce skin and cause injury or death. Stay away. NOTICE: • Escaping pressurized fluid can cause injury or pierce skin and poison. • Before disconnecting a hydraulic line, turn engine off and operate all controls to relieve pressure. Lower, block, or support any raised component with a hoist.
SK350 Operator’s Manual Drive - 31 Drive Chapter Contents Start Engine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Shut Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drive - 32 SK350 Operator’s Manual Start Engine Start Engine 1. Ensure all controls are in neutral. 2. If necessary, choke cold engine. 3. Move throttle to half open. 4. Turn ignition switch to start position and release when engine starts. NOTICE: If jump starting is required, see “Park service vehicle close to disabled equipment but do not allow vehicles to touch.” on page 65. 5. Push in choke after engine is warm. EMERGENCY SHUTDOWN: Turn ignition switch to STOP. Drive General Operation 1.
SK350 Operator’s Manual Drive - 33 Drive Safe Slope Operation Tipover possible. Machine can tip over and crush you. • Always operate with heavy end uphill. • Always carry load low. High load can cause tipping, loss of load or loss of visibility. • Drive cautiously at all times. • Never jerk control levers. Use a steady even motion. • Do not park unit on slope without lowering attachment to the ground, returning all controls to neutral position, shutting down unit, and applying parking brake.
Drive - 34 SK350 Operator’s Manual Shut Down Shut Down 1. Lower lift arms to ground. 2. Move all controls to neutral position. 3. Apply parking brake. 4. Run engine at full throttle for three minutes to cool. 5. Turn ignition switch to STOP. 6. Remove key. NOTICE: • Unit should not be parked on a slope unless parking brake is engaged. • Move all controls to neutral position when stopped.
SK350 Operator’s Manual Transport - 35 Transport Chapter Contents Lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 • Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 • Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Haul . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 • Inspect Trailer . . . . . . . . . . . . . . . . .
SK350 Operator’s Manual Transport - 36 Lift Lift Crushing weight. If load falls or moves it could kill or crush you. Use proper procedures and equipment or stay away. Points Lifting points are identified by lifting decals. Lifting at other points is unsafe and can damage machinery. Procedure Use a hoist capable of supporting the equipment's size and weight. See “Specifications” on page 67 or measure and weigh equipment before lifting. Use four lift points. Attach securely to cross members.
SK350 Operator’s Manual Transport - 37 Haul Haul IMPORTANT: For complete information, see the trailer manufacturer’s manual. Inspect Trailer • Check hitch for wear and cracks. Lubricate if needed. • Check battery for 12V charge, if installed. • Inspect lights for cleanliness and correct operation. Inspect reflectors and replace if needed. • Check tire pressure. Check lug nut torque with a torque wrench. Adjust if needed.
SK350 Operator’s Manual Transport - 38 Haul Load Crushing weight. If load falls or moves it could kill or crush you. Use proper procedures and equipment or stay away. NOTICE: • Load and unload trailer on level ground. • Attach trailer to vehicle before loading or unloading. • Ten to fifteen percent of total vehicle weight (equipment plus trailer) must be on tongue to help prevent trailer sway. • Incorrect loading can cause trailer sway. 1. Disengage parking brake. 2. Start engine. 3.
SK350 Operator’s Manual Transport - 39 Haul Tie Down Points Tiedown points are identified by tiedown decals. Securing to truck or trailer at other points is unsafe and can damage machinery. Procedure Loop tiedowns around unit at tiedown points. Make sure tiedowns are tight before transporting.
SK350 Operator’s Manual Transport - 40 Haul Unload Crushing weight. If load falls or moves it could kill or crush you. Use proper procedures and equipment or stay away. NOTICE: • Load and unload trailer on level ground. • Attach trailer to vehicle before loading or unloading. 1. Prepare trailer and ramps for unloading. 2. Remove tiedowns. 3. Disengage parking brake. 4. Start engine. 5. Pull lift arm control to raise mount plate (and attachment) off ground, but keep it low. 6.
SK350 Operator’s Manual Transport - 41 Tow Tow Under normal conditions, unit should not be towed. If unit breaks down and towing is necessary: • attach chains to tow points facing towing vehicle • tow for short distances at less than 1 mph (1.6 km/h) • do not tow for more than 100’ (30 m) • use no more than 1,300 lb (5800 N) of towing force • disengage parking brake and open tow valves Prepare Unit for Towing 1. Disengage parking brake, shown. 2. Ensure that all controls are in neutral.
Transport - 42 SK350 Operator’s Manual Tow 3. Locate bypass valves on top of each of the upper pumps. Turn each valve two turns counterclockwise to open. 4. After towing, turn each valve two turns clockwise to close. NOTICE: Bypass valves on BOTH pumps must be opened for towing.
SK350 Operator’s Manual Complete the Job - 43 Complete the Job Chapter Contents Rinse Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Disconnect Attachment . . . . . . . . . . . . . . . . . . . . . 44 Stow Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Complete the Job - 44 SK350 Operator’s Manual Rinse Equipment Rinse Equipment 1. Spray water onto equipment to remove dirt and mud, especially at undercarriage. NOTICE: Do not spray water onto operator’s console. Electrical components could be damaged. Wipe down instead. 2. Open hood and remove debris from inside of unit. 3. Remove mud from track sprockets. Disconnect Attachment 1. Lower attachment to the ground. 2. Ensure that all controls are in neutral. 3. Turn off engine. 4. Apply parking brake. 5.
SK350 Operator’s Manual Service - 45 Service Chapter Contents Service Precautions . . . . . . . . . . . . . . . . . . . . . . . . 46 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Recommended Lubricants/Service Key . . . . . . . 49 Oil Temperature Chart . . . . . . . . . . . . . . . . . . . . . . 50 10 Hour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 50 Hour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 100 Hour . . . . . .
SK350 Operator’s Manual Service - 46 Service Precautions Service Precautions Incorrect procedures could result in death, injury, or property damage. Learn to use equipment correctly. NOTICES: • Unless otherwise instructed, all service should be performed with engine off. • Stop engine and apply parking brake before opening hood for inspection or service. • Allow engine to cool before performing any service. • Refer to engine manufacturer’s manual for engine maintenance instructions.
SK350 Operator’s Manual Service - 47 Service Precautions Working Under Raised Lift Arms Crushing weight could cause death or serious injury. Use proper procedures and equipment or stay away. NOTICE: Support both lift arms before working under raised lift arms. Use safety supports as indicated when working under raised lift arms. Welding Precaution Explosion possible. Serious injury or equipment damage could occur. Follow directions carefully.
Service - 48 SK350 Operator’s Manual Overview Overview CMW
SK350 Operator’s Manual Service - 49 Recommended Lubricants/Service Key Recommended Lubricants/Service Key Item Description GEO Gasoline engine oil meeting or exceeding SG, SH, or SJ per the API service classifications and SAE viscosity recommended by engine manufacturer (SAE 10W30) THF Tractor hydraulic fluid, similar to Phillips 66 HG, Mobilfluid 423, Chevron Tractor Hydraulic Fluid, Texaco TDH Oil, or equivalent Check level of fluid or lubricant Check condition Filter Change, replace, adjust, serv
SK350 Operator’s Manual Service - 50 Engine Oil Temperature Chart Engine Oil Temperature Chart Temperature range anticipated before next oil change For more information on engine lubrication and maintenance, see your engine manual.
SK350 Operator’s Manual Service - 51 10 Hour 10 Hour Location Task Notes Traction Unit Check engine oil level GEO (SAE 10 W 30) Check hydraulic fluid level THF Check track tension Check hydraulic hoses Check Engine Oil Level Check engine oil level at dipstick opening (shown) every 10 hours. Oil level should be at top of marking. If low, add 10W30. Check with unit on level surface and at least 15 minutes after stopping engine.
Service - 52 SK350 Operator’s Manual 10 Hour Check Hydraulic Fluid Level Check hydraulic fluid level every 10 hours. Maintain fluid level at halfway point on sight glass (1), when engine is off and fluid is cool. If low, add THF at fill (2). Check Track Tension Check track tension every 10 hours and adjust as needed. Turn bolt (1) clockwise to tighten and counterclockwise to loosen. Track tension is correct when dimension A is 8 5/8” (219 mm) ±.250” (6.4 mm).
SK350 Operator’s Manual Service - 53 10 Hour Check Hydraulic Hoses Check hydraulic hoses for leaks every 10 hours. Fluid or air pressure could pierce skin and cause injury or death. Stay away. NOTICE: • Escaping pressurized fluid can cause injury or pierce skin and poison. • Before disconnecting a hydraulic line, turn engine off and operate all controls to relieve pressure. Lower, block, or support any raised component with a hoist.
SK350 Operator’s Manual Service - 54 50 Hour 50 Hour Location Task Traction Unit Check battery Notes Check drive belt Check air filter Clean oil cooler Change hydraulic filter initial Check Battery Check battery every 50 hours. Keep battery and terminals clean and free of corrosion. Explosion possible. Serious injury or equipment damage could occur. Follow directions carefully. NOTICE: • Battery gas can explode. Keep sparks and flames away from battery.
SK350 Operator’s Manual Service - 55 50 Hour Check Drive Belt Check drive belt every 50 hours. Adjust belt tension if necessary. Replace if cracked, stretched, or badly worn. Tensioner should be set at 2.5-3 increment marks. IMPORTANT: See belt changing procedure on page 62. To adjust: 1. Loosen bolt on tensioner (1). 2. Apply wrench to large nut (2). 3. Tighten tensioner until the fixed bar on the base is lined up with the third bar on the tensioner arm as shown (3).
Service - 56 SK350 Operator’s Manual 50 Hour Check Air Filter Check air filter for wear or holes every 50 hours. Replace as needed. NOTICE: When dirty, change the elements, do not attempt to clean them. • Compressed air or water may damage filter elements. • Tapping filter elements to loosen dirt may damage the elements. Clean Oil Cooler Clean oil cooler every 50 hours. Clean more frequently if operating in dusty conditions. Clean with compressed air or low pressure water.
SK350 Operator’s Manual Service - 57 50 Hour Change Hydraulic Fluid Filter (initial) Change hydraulic fluid filter at 50 hours for break in process, then change every 250 hours.
SK350 Operator’s Manual Service - 58 100 Hour 100 Hour Location Task Notes Traction Unit Change engine oil GEO, 10W30 Change engine oil filter Change Engine Oil Change engine oil every 100 hours. Drain oil at drain plug (1) and add GEO 10W30 at filler (2) until oil level is seen at marking. IMPORTANT: Use oil specified in “Engine Oil Temperature Chart” on page 50. Change Engine Oil Filter Change engine oil filter every 100 hours.
SK350 Operator’s Manual Service - 59 200 Hour 200 Hour Location Task Notes Traction Unit Check spark plugs and gap See engine operator’s manual for instructions CMW
SK350 Operator’s Manual Service - 60 250 Hour 250 Hour Location Task Traction Unit Change hydraulic fluid filter Change air filter, check inner element Change Hydraulic Fluid Filter Change hydraulic fluid filter every 250 hours. Change Air Filter Change air filter every 250 hours. 1. Open air filter housing at latches (1). 2. Remove primary (2) and secondary (3) elements. 3. Wipe inside of housing and wash end cup. 4. Insert new primary and secondary elements. 5. Close air filter case.
SK350 Operator’s Manual Service - 61 500 Hour 500 Hour Location Task Traction Unit Change hydraulic fluid Notes Change Hydraulic Fluid Change hydraulic fluid every 500 hours. Drain fluid at drain plug (3) and add THF at fill (1) until fluid level is at halfway point on sight glass (2).
SK350 Operator’s Manual Service - 62 As Needed As Needed Location Task Notes Traction Unit Change drive belts Jump start Change Drive Belt Change drive belt as needed when worn or damaged. . Hot parts may cause burns. Do not touch until cool. NOTICE: Allow engine to cool before touching parts or performing any service. 1. Stop engine and allow to cool before attempting service. 2. Engage parking brake. 3. Remove key from ignition switch. 4. Open hood and note routing and alignment of belt.
SK350 Operator’s Manual Service - 63 As Needed 5. Pull tensioner back and slip belt off of the idler pulley. 6. Remove belt from pulleys and carefully work it around fan and through the fan hole. 7. Remove belt through opening. 8. Install new belt in reverse order of removal and position tensioners to contact belt. 9. Adjust belt tension. See page 55 for belt adjustment procedure. Moving parts could cut off hand or foot. Stay away. NOTICE: Do not open hood for inspection or service with engine running.
SK350 Operator’s Manual Service - 64 As Needed Jump Start Unit Incorrect procedures could result in death, injury, or property damage. Use equipment correctly. NOTICES: • Park on level area. • Put all drive controls in neutral and lower all unstowed attachments. • Turn off all electrical loads. • Turn off engine and remove key from ignition. • Block tracks. Explosion possible. Serious injury or equipment damage could occur. Follow directions carefully.
SK350 Operator’s Manual Service - 65 As Needed Before You Start Electronic components can be easily damaged by electrical surges. Jump starting can damage electronics and electrical systems, and is not recommended except in extreme circumstances. Use quality large diameter jumper cables capable of carrying high currents (400 amps or more). Cheap cables may not allow enough current flow to start a dead/discharged battery. Read all steps thoroughly and review illustration before performing procedure.
Service - 66 SK350 Operator’s Manual As Needed IMPORTANT: Some equipment may have a positive jumper cable terminal (1) located externally. If so equipped, connect red positive (+) jumper cable clamp to terminal. 5. Connect the other red positive (+) jumper cable clamp to positive (+) post of battery (A) in the service vehicle. 6. Connect black negative (-) cable clamp to negative (-) post of battery (A) in service vehicle. 7.
SK350 Operator’s Manual Specifications - 67 Basic Unit Specifications Basic Unit Dimensions U.S. Metric H Overall height 42.5 in 1.1 m L Overall length 58.2 in 1.5 m Weight 1660 lb 753 kg H2 Hinge pin height, max 70.4 in 1.8 m L2 Wheelbase/track length 30 in 762 mm W Track width, max 35.1 in 892 mm Ground clearance 4.0/2.5 in 101 mm/64 mm Platform height 7.
Specifications - 68 SK350 Operator’s Manual Basic Unit Dimensions U.S. Metric 350 lb 158 kg Angle of departure 18° 18° Swing radius 35 in 889 mm Performance U.S. Metric Ground drive speed, forward 3.0 mph 4.8 km/h Ground drive speed, reverse 3.0 mph 4.8 km/h Ground pressure with no bucket or operator 3.9 psi 0.27 bar Hydraulic System U.S. Metric Flow rate 12 gpm 45.5 L/min Pressure 2300 psi 158 bar Flow rate 11 gpm 42 L/min Pressure 2330 psi 162 bar U.S.
SK350 Operator’s Manual Specifications - 69 Basic Unit Fluid Capacities U.S. Metric Fuel tank 7.5 gal 28.4 L Engine oil, including filter 2 qt 1.9 L Hydraulic reservoir 7 gal 26.5 L Battery SAE reserve capacity 41 min, SAE cold crank @ 0°F (-18°C) 340 amp, 12V electrical system Noise Levels Operator ear sound pressure is 82 dBA per ISO 6394 Exterior sound power level is 99 dBA per ISO 6393 Specifications are called out according to SAE recommended practices.
Specifications - 70 SK350 Operator’s Manual Basic Unit CMW
SK350 Operator’s Manual Support - 71 Procedure Support Procedure Notify your dealer immediately of any malfunction or failure of Ditch Witch equipment. Always give model, serial number, and approximate date of your equipment purchase. This information should be recorded and placed on file by the owner at the time of purchase. Return damaged parts to dealer for inspection and warranty consideration if in warranty time frame.
SK350 Operator’s Manual Warranty - 72 Warranty Ditch Witch Equipment and Replacement Parts Limited Warranty Policy Subject to the limitation and exclusions herein, free replacement parts will be provided at any authorized Ditch Witch dealership for any Ditch Witch equipment or parts manufactured by The Charles Machine Works, Inc. (CMW) that fail due to a defect in material or workmanship within one (1) year of first commercial use.
SK350 Operator’s Manual Service Record - 75 Service Record Service Performed Date Hours CMW
Service Record - 76 Service Performed CMW SK350 Operator’s Manual Date Hours
