Cotech YT9071A - Troubleshooting; Specifications

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ENGLISH
11. Troubleshooting
Problem Possible cause Solution
The engine won’t start or only
runs at low speed.
Incorrect starting procedure. Read theinstruction manual.
Dirt in thecarburettor. Allow aqualified technician
to clean thecarburettor.
Faulty spark plug. Clean or change thespark plug.
Clogged fuel filter. Change thefuel filter (inside thefuel tank).
The engine starts but with
loss of power.
Wrong choke setting. Open thechoke.
Dirty air filter. Clean or change theair filter.
Dirt in thecarburettor. Allow aqualified technician
to clean thecarburettor.
The engine doesn’t respond
to thethrottle.
The engine is not
warm enough.
Allow theengine to idle for aminute.
Loss of power under load. Faulty spark plug. Clean or change thespark plug.
The engine runs irregularly. Dirt in thecarburettor. Allow aqualified technician to clean
the carburettor.
The engine smokes alot. Incorrect fuel mixture. Use petrol and 2-stroke oil with a50:1
(2 %) ratio.
N.B. The grass trimmer conforms to current safety requirements. Repairs to thegrass trimmer should always
be carried out using original spare parts and by aqualified technician. Failure to do so may result in injury.
12. Disposal
Follow local ordinances when disposing of this product. If you are unsure of how to dispose
of this product, please contact your municipality.
13. Specifications
Model YT9071A
Dry weight 7.4 kg (without fuel and cutters)
Motor Air-cooled 2-stroke engine
Cylinder volume 35 cc
Fuel Petrol/oil mixture 50:1 (2 %)
Max engine output 1.6 hp (1.15 kW) at 7500 rpm (ISO 8893)
Max. spindle speed 8500 rpm
Max engine speed 10500 rpm
Idling speed 2800 rpm
Direction of rotation Anticlockwise (viewed from above)
Spark plug NGK BM6A or Bosch WS8E
Tank capacity 0.95 litres
Cutterhead Nylon trimmer line: Ø 2.4 mm,
4-tooth brush cutter blade Ø 230 mm, bore: 1″ (25.4 mm)
Vibration level 11.46 m/s² (Full throttle)
Sound pressure level (EN 27917) LpA 101.2 dB(A) K: 3 dB
Sound pressure level (EN 10884) LwA 115 dB(A) K: 3 dB