Page 1 Operating Instruction Original Operating Instructions DR7X Vibratory tamper S/N 101 924 05 1001> / S/N 101 924 06 1001> DL8 203 46 EN © 04/2018...
Page 3: Table Of Contents
3.7.2 Operation........................... 30 3.7.3 Parking the machine........................30 3.8 Refuelling............................. 31 3.9 Maintenance work........................32 3.9.1 Preliminary remarks........................32 3.9.2 Working on the engine....................... 32 3.9.3 Working on the tamper foot......................32 3.9.4 Cleaning work..........................32 3.9.5 After maintenance work......................32 DR7X...
Page 4 8.9.3 Replacing the fuel filter....................... 82 8.9.4 Cleaning the fuel screen......................85 8.9.5 Replacing the air filter........................ 87 8.9.6 Checking, adjusting the engine speed..................89 8.9.7 Replacing the starter rope......................92 8.9.8 Changing the oil in the tamper foot.................... 94 8.10 As required..........................96 DR7X...
Page 5 9.1 Changing the tamper foot plate....................100 Troubleshooting..........................101 10.1 Preliminary remarks........................ 102 10.2 Engine faults..........................103 10.3 What to do if the engine has flooded..................105 Disposal............................. 109 11.1 Final shut-down of machine....................110 List of special tools........................... 111 DR7X...
Page 6 Table of contents DR7X...
Page 7: Introduction
Introduction Introduction DR7X...
Page 8: Foreword
For your own personal safety you should only use original parts from Dynapac. For your machine we offer service kits to make maintenance easier. In the course of technical development we reserve the right for technical modifications without prior notification.
Page 9 Introduction – Foreword The above notes do not constitute an extension of the warranty and liability conditions specified in the general sales and delivery conditions of Dynapac GmbH. We wish you successful work with your Dynapac machine. DR7X...
Page 10: Machine Type Plate And Engine Type Plate
Nominal Power Operating Mass Year of Construction Serial-No. Ammerländer Str. 93 D-26203 Wardenburg Made in Germany B-924-0001 Fig. 1: Machine type plate (example) Please enter here: Engine type (1): Engine number (2): Fig. 2: Engine type and engine number DR7X...
Page 11: Technical Data
Technical data Technical data DR7X...
Page 12 Fig. 3 1030 (13.8) (40.6) (28.7) (13.2) (11.0) Dimensions in millimetres (Dimensions in inch) Weights Basic weight (148) (lbs) Operating weight (CECE) (150) (lbs) Travel characteristics Max. working speed m/min (66) (ft/min) Max. area output (depending on soil) (3616) DR7X...
Page 13: Noise And Vibration Data
2003/10/EU Vibration Protection Directive 2002/44/EU During operation these values may vary because of the prevailing operating conditions. 2.1.1 Noise data Sound pressure level at the opera- = 93 dB(A), determined acc. to ISO 11201 and EN 500. tor's stand DR7X...
Page 14: Vibration Data
Total vibration value a = 5.5 m/s on crushed rock determined acc. to EN 500/ISO 5349. Associated uncertainty K = 0.8 m/s , determined acc. to EN 12096. Observe the daily vibration load (work safety acc. to 2002/44/EC). DR7X...
Page 15: Concerning Your Safety
Concerning your safety Concerning your safety DR7X...
Page 16: Basic Prerequisites
WARNING! Danger to life or danger of severe injuries if failing to comply! Sections marked accordingly indicate a dangerous situation that could lead to fatal or severe injuries, if this warning is disregarded. DR7X...
Page 17: Personal Protective Equipment
Safety shoes To protect against heavy falling parts and slipping on slippery ground. Protective gloves To protect the hands against excoriation, punctures or deep injuries, against irritating and caustic substances as well as against burns. DR7X...
Page 18: Intended Use
Dangers may arise from the machine when it is used for purposes other than the one it is intended for. Any danger caused by improper use is the sole responsibility of the operating company or driver/operator, the manufacturer cannot be made liable. DR7X...
Page 19 Examples for improper use are: Working in horizontal direction Ramming of poles Vibrating of paving blocks It is not permitted to stand on the machine while working. starting and operation of the machine in explosive environments and in underground mining is prohibited. DR7X...
Page 20: Definition Of Responsible Persons
Observe your local laws and regulations. Rights, obligations and rules of conduct for driver or operator: The driver or operator must: be instructed about his rights and obligations, wear protective equipment as appropriate for the application, have read and understood the operating instructions, DR7X...
Page 21 Persons under the influence of alcohol, medication or drugs are not allowed to operate, service or repair the machine. Maintenance and repair work requires specific knowledge and must therefore only be performed by trained specialists. DR7X...
Page 22: Basic Safety Regulations For Safe Operation
Machines which are not safe to operate or in traffic must be imme- diately taken out of service and shall not be used, until these defi- ciencies have been properly rectified. Safety installations and switches must neither be removed nor must they be made ineffective. DR7X...
Page 23: Handling Fuels And Lubricants
/ personal protective equipment physical and chemical properties stability and reactivity toxicological data environmental data notes on waste disposal information on transport legislation other data DR7X...
Page 24: Safety Regulations And Environmental Protection Regulations For Handling Oil
Immediately bind spilled oil with an oil-binding agent. ENVIRONMENT! Oil is an environmentally hazardous substance! – Always keep oil in proper containers. – Immediately bind spilled oil with an oil-binding agent. – Dispose of oil and oil filter according to regula- tions. DR7X...
Page 25: Safety Regulations And Environmental Protection Regulations For Handling Gasoline
Gasoline is an environmentally hazardous sub- stance! – Always keep gasoline in proper containers. – Immediately bind spilled gasoline with an oil- binding agent and dispose of in accordance with regulations. – Dispose of gasoline and fuel filter according to regulations. DR7X...
Page 26: Safety Regulations And Environmental Protection Regulations For Handling Fuel Stabiliser
– Avoid contact with fuel stabilizer. ENVIRONMENT! Fuel stabilizer is an environmentally hazardous substance! – Immediately bind spilled fuel stabilizer with an oil-binding agent and dispose of according to regulations. – Dispose of fuel stabilizer according to regula- tions. DR7X...
Page 27: Loading/Transporting The Machine
Fasten the lifting gear only at the specified lifting points. Danger to the life of persons if they step or stand under a sus- pended load. When lifting the machine avoid uncontrolled movements of the load. If necessary hold the load with guide ropes. DR7X...
Page 28: Start-Up Procedure
Do not inhale exhaust fumes, because they contain toxic sub- stances, which could cause damage to health, unconsciousness or even death. Avoid operation in closed or partly closed rooms, or ensure ade- quate ventilation when working in trenches. DR7X...
Page 29: Operation In Trenches
For this reason, take care to ensure sufficient ventilation when operating the vibratory tamper or vibratory plate in more than shoulder-deep trenches which have a width of less than 1.5 metres, a maximum depth of less than 3 metres or a maximum length of less than 10 metres. DR7X...
Page 30: Operation
Park the machine on horizontal, level, firm ground. Before leaving the machine: Shut down the engine, Secure the machine against accidental tipping over, Secure the machine against unauthorized use. Mark machines, which could be in the way, with a clearly visible sign. DR7X...
Page 31: Refuelling
Do not spill any fuel. Catch running out fuel, do not let it seep into the ground. Wipe off spilled fuel. Keep dirt and water away from the fuel. A leaking fuel tank can cause an explosion. Ensure tight fit of the fuel tank cover, if necessary replace immediately. DR7X...
Page 32: Maintenance Work
Do not perform cleaning work while the motor is running. Allow the engine to cool down before starting cleaning work. Do not use gasoline or other easily inflammable substances for cleaning. 3.9.5 After maintenance work Reassemble all guards and protections. DR7X...
Page 33: Repair
Repair Identify a defect machine with a warning sign. Only operate the machine after it has been repaired. When replacing safety relevant components, only original spare parts must be used. Repairs must only be performed by an expert/qualified person. DR7X...
Page 34: Signage
3850 - 4200 min Max: 0,3 l 1-2 MINUTEN 18.3 in Low Oil Level = No Start Made by Designation Type Nominal Power Operating Mass Year of Construction Serial-No. Ammerländer Str. 93 D-26203 Wardenburg Made in Germany B-924-0006 Fig. 6 DR7X...
Page 35 Warning sticker - Do not inhale exhaust gases Do not operate inside closed areas. Fig. 8 Warning sign - Fire hazard Fill up with fuel only when engine is stopped and has cooled down. Fig. 9 Instruction sticker - Wear ear defenders Fig. 10 DR7X...
Page 36 Concerning your safety – Signage Information sticker - Lifting point Fig. 11 Information sticker - Lashing point Fig. 12 Information sticker - Guaranteed sound capacity level Fig. 13 Information sticker - pre-tensioned spring Fig. 14 DR7X...
Page 37 Concerning your safety – Signage Fig. 15 Brief operating instructions Machine type plate (example) Made by Designation Type Nominal Power Operating Mass Year of Construction Serial-No. Ammerländer Str. 93 D-26203 Wardenburg Made in Germany B-924-0002 Fig. 16 DR7X...
Page 38 Concerning your safety – Signage DR7X...
Page 39: Indicators And Control Elements
Indicators and control elements Indicators and control elements DR7X...
Page 40 Indicators and control elements B-924-0007 Fig. 17 Engine oil level warning light Engine stop switch Operating hour meter/engine rpm-meter Throttle lever Recoil starter Choke lever DR7X...
Page 41: Checks Prior To Start Up
Checks prior to start up Checks prior to start up DR7X...
Page 42: Notes On Safety
Danger of injury caused by rotating parts! – Before starting work on the machine make sure that the engine can not be started. Park the machine safely Ä Chapter 6.4 „Parking the machine in secured condition“ on page 55. DR7X...
Page 43: Visual Inspections And Function Tests
5.2 Visual inspections and function tests Check fuel tank and lines for condition and leaks. Check bolted connections for tight fit. Check machine for contamination and damage. Check the hydraulic oil cooler for dirt. Check starter rope for chafing. DR7X...
Page 44: Checking The Engine Oil Level
Danger of engine damage! – Do not overfill the engine. Fig. 18 The oil level must always be between the "MIN"- and "MAX"- marks. If the oil level is too low, top up oil to the "MAX" mark immediately. DR7X...
Page 45: Checking The Fuel Level; Topping Up Fuel
Protective equipment: Working clothes Safety shoes Protective gloves Clean the area around the filling port. Remove the cap and check the filling level visually. Fill in fuel through a funnel with screen filter. Close the cap. B-541-0068 Fig. 19 DR7X...
Page 46: Checking The Rubber Buffers
Park the machine in secured condition Ä Chapter 6.4 „Parking the machine in secured condition“ on page 55. Allow the engine to cool down. Check all rubber buffers for tight fit, cracks and tear-offs. Replace damaged rubber buffers immediately. Fig. 20 DR7X...
Page 47: Operation
Operation Operation DR7X...
Page 48: Adjusting The Guide Handle
Park the machine in secured condition „Parking the machine in secured condition“ on page 55. Disassemble the fastening screws and washers on both sides. Set the steering bow to the desired height. Fig. 21 Assemble the fastening screws and washers on both sides. DR7X...
Page 49: Starting The Engine
Hearing protection Safety shoes The engine does not start if the oil level is too low. The engine oil level warning lamp flashes when operating the recoil starter. Fig. 22 Set the engine stop switch to position "ON". Fig. 23 DR7X...
Page 50 Fig. 24 Close the choke. Always close the choke to start a cold and warm engine. Fig. 25 Pull the rope by the starter handle, until resistance can be felt. Guide the starter handle back to initial position. Fig. 26 DR7X...
Page 51 Warm up engine for a short while before starting work. Do not operate the engine immediately under full load. Should the engine stop again after approx. 3 to 5 seconds: Fig. 29 Close the choke again. Repeat the starting procedure. DR7X...
Page 52 If the recoil starter is frequently operated with the choke closed, the engine will draw in too much fuel and is unable to start ( Ä Chapter 10.3 „What to do if the engine has flooded“ on page 105). DR7X...
Page 53: Operation
The layer thickness of the material to be com- pacted should not be higher than is possible for the vibratory tamper to cope with. Protective equipment: Hearing protection Safety shoes Set the throttle lever to position “MAX”. ð The machine works with highest frequency. Fig. 30 DR7X...
Page 54 Adapt the marching speed by applying load to the guide handle: (A) No load - slowly forward (B) Heavy load - fast forward Fig. 33 Always shift the throttle lever to position “MIN” for short work breaks. Fig. 34 DR7X...
Page 55: Parking The Machine In Secured Condition
Park the machine so that it cannot turn over. Fig. 36 Pull the rope by the starter handle, until resistance can be felt. Guide the starter handle back to initial position. ð This procedure protects against moisture deposits inside the engine. Fig. 37 DR7X...
Page 56: Operating Hour Meter/Engine Rpm-Meter
Display [LOW] alternately displayed with the engine speed. to increase the engine speed. Operating hours Hour meter Maintenance display [in ...] together with the remaining period (in hours) until the next maintenance. Set maintenance intervals: after the first 25 operating hours then every 100 operating hours DR7X...
Page 57 Keep pressing the function key (1), until the maintenance indicator or the hour meter is displayed. Press the function key for three seconds. ð The maintenance indicator is reset to 100 hours. The hour meter is reset to zero hours. Fig. 39 DR7X...
Page 58 Operation – Operating hour meter/engine rpm-meter DR7X...
Page 59: Loading/Transporting The Machine
Loading/transporting the machine Loading/transporting the machine DR7X...
Page 60: Loading The Machine
Attach the lifting tackle to the dedicated lifting eye. DANGER! Danger to life caused by suspended loads! – Do not step or stand under suspended loads. Lift the machine carefully and set down again at the intended B-541-0018 location. Fig. 40 DR7X...
Page 61 Loading/transporting the machine – Loading the machine WARNING! Danger of burning on hot components! – Wear your personal protective equipment (protective gloves, protective clothing). – Avoid touching hot components. Lay the machine on the rollers. B-541-0017 Fig. 41 DR7X...
Page 62: Lashing The Machine To The Transport Vehicle
Wear your personal protective equipment (pro- tective gloves, protective clothing). – Avoid touching hot components. Lean the tamper foot against the side wall of the transport vehicle. Fasten the tamper on the transport vehicle with at least two suitable lashing belts. B-541-0019 Fig. 42 DR7X...
Page 63: Maintenance
Maintenance Maintenance DR7X...
Page 64: Preliminary Remarks And Safety Notes
After maintenance work has been completed, dispose of fuels and lubricants, filters, sealing elements and cleaning cloths in an envi- ronmentally friendly way. After all maintenance work is completed reinstall all guards and safety installations. DR7X...
Page 65: Fuels And Lubricants
Methanol must also contain co-solvents and corrosion inhibitors. Do not use any fuel with a higher ethanol or methanol content. The use of fuels with a higher ethanol or methanol content will cause starting and/or power problems or even cause damage in the fuel system. DR7X...
Page 66: Gear Oil Sae 75W-90
Mixing in fuel stabilizer does not regenerate old fuel. 8.2.3 Gear oil SAE 75W-90 Use a fully synthetic gear oil in accordance with SAE 75W-90, API GL5 with a kinematic viscosity of at least 16 mm /s at 100 °C (212 °F). DR7X...
Page 67: List Of Fuels And Lubricants
(0.8 gal us) „Fuel“ on page 65 Fuel stabilizer as required Ä Chapter 8.2.2.2 „Fuel stabil- Specification: izer“ on page 66 Tamper foot SAE 75W-90, API GL-5 Ä Chapter 8.2.3 „Gear oil SAE Specification: (0.26 gal us) 75W-90“ on page 66 DR7X...
Page 68: Running-In Instructions
Check the idle speed and the max. speed of the engine, Ä Chapter 8.9.6 „Checking, adjusting the adjust if necessary engine speed“ on page 89. Check engine and machine for leaks. Retighten the fastening screws on air filter, exhaust and other attachments. Retighten the bolted connections on the machine. DR7X...
Page 69: Maintenance Table
Cleaning the fuel screen 8.9.5 Replacing the air filter 8.9.6 Checking, adjusting the engine speed 8.9.7 Replacing the starter rope 8.9.8 Changing the oil in the tamper foot As required 8.10.1 Cleaning the machine 8.10.2 Checking, cleaning the spark plug DR7X...
Page 70: Weekly
(87 psi)) from inside to outside by moving the gun up and down inside the element, until it is free of dust. Fig. 46 Check seals and air filter for damage. Replace the air filter if it is damaged. Insert the air filter and reassemble the cover. DR7X...
Page 71 Blow the air filter out from inside to outside with dry com- B-541-0082 pressed air (max. 2 bar (29 psi)), until all dust has been removed. Fig. 50 Check seals and air filter for damage. Replace the air filter if it is damaged. DR7X...
Page 72 Assemble the cover (3) with fastening screws (1), tightening torque: 3 Nm (2 ft·lbf). 3 Nm B-541-0097 Fig. 51 Connect the air hose (1) with the hose clamp (2) to the cover (3). B-541-0072 Fig. 52 Assemble the left engine guard. B-924-0008 Fig. 53 DR7X...
Page 73: Monthly
The upper edge of the inspection glass equals the bottom edge of the oil filling bore. Fig. 54 Check concertina wall for condition, damage and tight fit. Check the hose clamps for tight fit, tightening torque for screws (1): 10 Nm (7.4 ft·lbf). Fig. 55 DR7X...
Page 74 Maintenance – Monthly Retighten 4 screws (1) on the tamper foot plate, tightening torque: 60 - 70 Nm (44 - 52 ft·lbf). Fig. 56 Retighten 5 screws (1) on the tamper foot plate, tightening torque: 15 Nm (11 ft·lbf). Fig. 57 DR7X...
Page 75: Semi-Annually
Fill in fresh oil up to the bottom edge of the filler bore. Push the oil dipstick (1) back in. Check for leaks after a short test run. Check the oil level on the dipstick, correct if necessary. Dispose of oil in an environmentally friendly way. Fig. 59 DR7X...
Page 76: Annually
55. Let the engine cool down to ambient temperature. Pull the air feed hose (1) and the hose clamp (2) off the cover (3). B-541-0072 Fig. 60 Disassemble the cover (1) and air filter (2). B-541-0073 Fig. 61 DR7X...
Page 77 Do not tear off any hoses or cables. Remove the guide handle and secure it to the housing with a fastening screw. Tighten the fastening screw hand-tight. Fig. 63 Disassemble the recoil starter. Fig. 64 Pipe clamp Screw M6x18 Screw M6x14 Screw M6x18 DR7X...
Page 78 Do not apply force to remove the cylinder head cover. Insert a screwdriver into the recess and lever the cylinder head cover carefully off. Check the cylinder head cover for damage. Replace a damaged or bent cylinder head cover. Fig. 67 DR7X...
Page 79 (0.06 to 0.08 in) in diameter, to the inner side of the cylinder head cover. Liquid sealant: Three Bond 1207B or similar. Fig. 70 Attach the cylinder head cover to the cylinder block within the next 10 minutes. Tighten the fastening screws. Fig. 71 DR7X...
Page 80 Do not mix up the fastening screws for the recoil starter by mistake. Assemble the recoil starter. Fig. 73 Pipe clamp Fastening screw M6x18 Fastening screw M6x14 Fastening screw M6x18 Attach the guide handle and tighten the right hand fastening screws hand-tight. Fig. 74 DR7X...
Page 81: Replacing The Spark Plug
After a short test run, check the engine for leaks. B-541-0073 Fig. 77 8.9.2 Replacing the spark plug NOTICE! Danger of engine damage! – Do not use spark plugs with incorrect heat value. Recommended spark plugs: CR5HSB DENSO U16FSR-UB DR7X...
Page 82: Replacing The Fuel Filter
Keep away from heat sources, sparks and other sources of ignition. – Do not spill any gasoline. Protective equipment: Working clothes Safety shoes Protective gloves Preparations Park the machine safely Ä Chapter 6.4 „Parking the machine in secured condition“ on page 55. DR7X...
Page 83 Disassemble the left engine guard. B-924-0008 Fig. 80 Disassembling the fuel filter Loosen the hose clamps (1) and (4) and pull the fuel hoses off the fuel filter (2). Loosen fastening screw (3). Take off the old fuel filter. Fig. 81 DR7X...
Page 84 Fig. 82 Connect the upper fuel hose to the fuel filter with the hose clamp (1). Fig. 83 Concluding work Assemble the left engine guard. Dispose of fuel and fuel filters in line with environmental reg- ulations. B-924-0008 Fig. 84 DR7X...
Page 85: Cleaning The Fuel Screen
„Parking the machine in secured condition“ on page 55. Loosen hose clamp (1) and pull the fuel hoses off the fuel valve (2). Fig. 85 Open the fuel valve (engine stop switch in position "ON") and catch runni9ng out fuel. Fig. 86 DR7X...
Page 86 Replace the fuel valve if damaged. Assemble the fuel valve with a new seal Fig. 88 Assemble the engine stop switch (1) with screws (2). Fig. 89 Connect the fuel hose with the hose clamp (1) to the fuel valve (2). Fig. 90 DR7X...
Page 87: Replacing The Air Filter
Park the machine safely in secured condition“ on page 55. Allow the engine to cool down. Disassemble the cover (1) and air filter (2). Clean the cover. Replace the air filter. Insert the air filter and reassemble the cover. B-541-0073 Fig. 92 DR7X...
Page 88 Wipe the inside of the air filter housing with a clean cloth. Replace the air filter. B-541-0081 Fig. 95 Slide the air filter (2) carefully into the housing. Assemble the cover with fastening screws (1), tightening torque: 3 Nm (2 ft·lbf). 3 Nm B-541-0097 Fig. 96 DR7X...
Page 89: Checking, Adjusting The Engine Speed
Keep your feet clear of the tamper foot plate. – Always hold on to a running machine. – Always keep an eye on a running machine. WARNING! Loss of hearing caused by too high noise bur- dens! – Wear your personal protective equipment (ear protection). DR7X...
Page 90 After approx. 30 to 40 seconds read the idle speed from the engine rpm-meter. Fig. 100 Set the throttle lever to “MAX” position. After approx. 30 to 40 seconds read the max. speed from the engine rpm-meter. If necessary, adjust the idle speed or maximum speed as required. Fig. 101 DR7X...
Page 91 Adjust the idle speed using the stop screw (2) on the throttle lever. Adjust the maximum speed via the stop screw (1). Fig. 103 Secure the stop screws with counter nuts. Adjust the throttle cable, if this should be necessary. Assemble the left engine guard. B-924-0008 Fig. 104 DR7X...
Page 92: Replacing The Starter Rope
If the starter rope has been torn or the coil has recoiled com- pletely: Before assembling the rope, turn the coil (2) 5 revolutions in anti-clockwise direction and align the rope openings in coil and housing (5) to one another (A). Fig. 107 DR7X...
Page 93 Clip in the spacer ring (2) on the recoil starter (1). Fig. 110 NOTICE! The recoil starter may get damaged! – Do not mix up the fastening screws for the recoil starter by mistake. Assemble the recoil starter. Fig. 111 Pipe clamp Screw M6x18 Screw M6x14 DR7X...
Page 94: Changing The Oil In The Tamper Foot
Stand the tamper on its foot again and secure it against tip- ping over. Clean the drain plug and screw it in with sealing agent (low- strength, e.g. spare parts number DL 009 700 16). Fig. 112 DR7X...
Page 95 Fig. 113 Check the oil level in the inspection glass, correct if neces- sary. The upper edge of the inspection glass equals the bottom edge of the oil filling bore. Dispose of oil in line with environmental regulations. Fig. 114 DR7X...
Page 96: As Required
Clean the machine with a water jet. Warm up the engine for a while to avoid corrosion. B-541-0084 Fig. 115 8.10.2 Checking, cleaning the spark plug NOTICE! Danger of engine damage! – Do not use spark plugs with incorrect heat value. DR7X...
Page 97 ð Nominal value: 0.6 - 0.7 mm (0.024 - 0.028 in) Carefully screw in the spark plug by hand. Once the sealing surface of the used spark plug is in contact, Fig. 117 tighten for another 1/8 to 1/4 turn with the spark plug spanner. DR7X...
Page 98 Maintenance – As required DR7X...
Page 99: Setting Up / Refitting
Setting up / refitting Setting up / refitting DR7X...
Page 100: Changing The Tamper Foot Plate
Fasten the new tamper foot plate with the fastening screws, tightening torque: 60 bis 70 Nm (44 bis 52 ft·lbf). Ä Chapter Check the engine speed, readjust if necessary 8.9.6 „Checking, adjusting the engine speed“ on page 89. Fig. 119 DR7X...
Page 101: Troubleshooting
Troubleshooting Troubleshooting DR7X...
Page 102: Preliminary Remarks
Whenever a fault occurs you should therefore thoroughly read these instructions on correct operation and maintenance. If you cannot locate the cause of a fault or rectify it yourself by fol- lowing the trouble shooting chart, you should contact our customer service department. DR7X...
Page 103: Engine Faults
Check that the tank lid ventilation is open, if necessary replace the tank lid Poor fuel quality Check the fuel quality, if necessary change the fuel Engine does not Throttle cable defective Have checked by qualified expert per- run with full speed sonnel DR7X...
Page 104 Cylinder, piston or piston rings worn Have checked by qualified expert per- sonnel Engine runs with Centrifugal clutch defective Have checked by qualified expert per- high speed, but no sonnel vibration Mechanical defect Have checked by qualified expert per- sonnel DR7X...
Page 105: What To Do If The Engine Has Flooded
– Wear your personal protective equipment (ear protection). Protective equipment: Hearing protection Safety shoes Set the engine stop switch to position "OFF". Fig. 120 Open the choke. Fig. 121 Set the throttle lever to position "MAX". Fig. 122 DR7X...
Page 106 If the engine does not start after 3 to 5 attempts, close the choke and operate the recoil starter once again. If the engine still does not start after 3 to 5 attempts, clean the spark plug. Fig. 125 DR7X...
Page 107 Screw the spark plug carefully in by hand and once the sealing surface of the used spark plug is in contact tighten for another 1/8 to 1/4 turn with the spark plug spanner. Plug the spark plug socket back on. Repeat the starting procedure. DR7X...
Page 108 Troubleshooting – What to do if the engine has flooded DR7X...
Page 109: Disposal
Disposal Disposal DR7X...
Page 110: Final Shut-Down Of Machine
Ä Chapter 3.4 „Han- dling fuels and lubricants“ on page 23. Protective equipment: Working clothes Safety shoes Protective gloves Safety goggles Empty the fuel tank. Drain oil from engine and tamper foot. DR7X...
Page 111: List Of Special Tools
List of special tools List of special tools DR7X...
Page 112 List of special tools 16 mm spark plug spanner Fig. : 16 mm spark plug spanner (example) DR7X...

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