NTC NT-70H Operation Manual Download Page 9

Vibratory tampers 

Operation manual 

page 

issued 05/2014 

wash, let dry and lightly oil Fill. Before 
installing squeeze out excess oil.  
Paper filters blown clean with compressed air 
from the inside liner. 
If the cartridge is very dirty or damaged, replace 
it.

 

 
 
 

Storage: 

Store  the  machine  in  upright  position,  after  the 
engine gets cooled. 
If  the  machine  must  be  stored  in  horizontal 
position,  place  it  always  on  the  front  or  right-
hand  side.  Tighten  the  fuel  tank  cap  properly 

and check, whether the fuel does not leak. Drain 
the fuel tank if necessary. 

NOTE! 

Lower  the  tamper  always  on  the  front  or 
right-hand side (with the fuel tank cap up). 

 

 

Long-term storage: 

Drain  the  fuel  tank  and  the  carburetor.  Remove 
the  sparkling  plug  and  put  several  drop  of 
engine  oil  into  the  cylinder.  Turn  the  engine 
several times, so that oil covers evenly all parts. 
Clean the tamper and wipe it with a cloth dipped 
in clean oil. 
Store  the  machine  at  a  safe,  dry  and  shaded 
place and cover it for protection against dust. 

 

4. TROUBLESHOOTING

4.1.  Difficult To Start 

Fuel is in the tank, the plug does not sparkle. 

spark plug gap is bridged

 

carbon sediments on the spark plug 

loose plug connector 

short circuit due to water 

improper distance of the electrodes 

short-circuited starting 

Fuel is in the tank, the plug sparkles. 

clogged exhaust silencer 

wrong fuel 

clogged air filter 

dirty carburetor 

Insufficient compression 

faulty window seals

 

piston ring broken 

piston / cylinder excessively worn out 

loose sparkling plug 

No fuel in the carburetor 

no fuel in the tank 

fuel tap closed 

dirty fuel filter 

clogged ventilation of the fuel tank 

air bubble in the fuel hose 

seized needle in the carburetor 

faulty membrane 

wrong carburetor adjustment 

dirty carburetor 

 

 

 

 

4.2. Insufficient Engine Power 

Low engine power 

dirty air filter 

air bubble in the fuel hose 

dirty nozzles in the carburetor 

carbonized exhaust silencer 

low compression (see above) 

improperly  adjusted  distance  between 
electrodes of the sparkling plug 

faulty sparkling plug 

wrong fuel 

Engine overheating 

carbonized combustion compartment 

carbonized exhaust silencer 

wrong sparkling plug (unsuitable temp. 
value) 

Unstable engine speed 

dirty speed governor 

faulty governor spring 

failure at the fuel supply 

engine is getting false air 

Faulty recoil starter 

dirty starter mechanism 

return spring broken 

damaged ratchets 

 
Tamper does not regularly - blows are too slow 

Summary of Contents for NT-70H

Page 1: ...C STAVEBN TECHNIKA spol s r o Ji inkov 120 552 03 esk Skalice Czech Republic NT59 NT65 NT68 NT 70H Tel 420 491 452 184 E mail info ntc vibro by www ntc vibro by Tel 375 44 737 23 37 e mail info ntc vi...

Page 2: ...roke single cylinder engine HONDA net power 2 6 kW or diesel engine HATZ power 3 4 kW V echna p slu n ustanoven kter v robek spl uje The product meets all relevent provisions Strojn za zen sm rnice 20...

Page 3: ...ratory tampers may be used only for compaction jobs in accordance with this operation manual 1 2 Hygienical Data Machine type NT 59 NT 65 N NT 68 NT 70H Sound power level LWA dB 95 95 95 95 Guaranteed...

Page 4: ...d sufficient ventilation 12 High care should be paid at the edges of digs heaps or slopes in order to avoid falling down 13 Held and guide the machine with high care in order to avoid hands injury cau...

Page 5: ...ign a symbol No B 3 1 exclamation mark before operating the machine warns of danger Information for operators on how to proceed with the repair cleaning or adjusting machines Label the symbol No B 2 5...

Page 6: ...If there is no visible oil level add oil Use engine oil class SAE 10W 30 15W 40 SE SF or better 3 Add gasoline either lead or lead free into the fuel tank Do not use mixture with oil for 4 stroke eng...

Page 7: ...te the engine several times before mounting the plug back to flush out excessive fuel 3 2 Operation 1 Set up full throttle quickly to increase the engine speed The centrifugal clutch gets engaged and...

Page 8: ...the machine for oil or fuel leaks Every 50 hours of operation Clean the air filter In case of operation under extremely dusty condition clean it daily Check the sparkling plug and adjust the gas betw...

Page 9: ...is bridged carbon sediments on the spark plug loose plug connector short circuit due to water improper distance of the electrodes short circuited starting Fuel is in the tank the plug sparkles clogge...

Page 10: ...plate of the machine 4 4 Maintenance Schedule Before starting Check fuel level control of lubrication oil sight glass if the machine is in a horizontal position the sight glass is filled with oil Chec...

Page 11: ...failure improper assembly etc Warranty limitation This warranty does not cover failures caused by the user namely by unsuitable or inadequate operation lack of maintenance unauthorized modifications...

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