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30<br />
GB<br />
12. Causes of faults and their remedy<br />
Fault<br />
Engine does not start<br />
Engine performance decreases<br />
Engine runs irregulary<br />
Mower will not move forward<br />
Drive speed cannot be regulated<br />
Strong vibrations<br />
Possible cause<br />
– Switch handle not pressed<br />
down.<br />
– No petrol.<br />
– Spark plug connector loose.<br />
– Spark plug defective or dirty or<br />
electrode burnt out.<br />
– Engine getting too much petrol<br />
(spark plug wet).<br />
– Air filter dirty.<br />
– Ignition defective.<br />
– Battery is not charged.<br />
– Connection cable between<br />
ignition key, battery and engine<br />
loose or without contact.<br />
– Loose cable lug at ignition<br />
lock.<br />
– Air filter dirty.<br />
– Spark plug foul.<br />
– Petrol tank dirty.<br />
– Carburettor blocked.<br />
– Cooling air paths blocked.<br />
– Carburettor.<br />
– Ignition system.<br />
– Governor rods.<br />
– Drive V-belt loose or torn.<br />
– Bowden cable torn or<br />
disconnected.<br />
– Excessive grass residue under<br />
the belt cover<br />
– Engine fixing loose.<br />
– Blade loose.<br />
– Blade coupling run in<br />
eccentrically.<br />
– Blade not balanced during<br />
sharpening.<br />
Remedy<br />
– Press switch handle to upper<br />
part of handlebar.<br />
– Re-fuel.<br />
– Press on spark plug connector.<br />
– Replace or clean spark plug,<br />
set electrode distance to<br />
0.75 mm and replace spark<br />
plug is necessary.<br />
– Have it checked by your JOHN<br />
DEERE dealer.<br />
– Clean or replace air filter insert.<br />
– Have it checked by your JOHN<br />
DEERE dealer.<br />
– Charge the battery.<br />
– Connect or make sure battery<br />
plug is connected to wiring<br />
harness.<br />
– Have it checked by your JOHN<br />
DEERE dealer.<br />
– Clean or replace air filter insert.<br />
– Use fresh and clean petrol.<br />
– Have it cleaned by your JOHN<br />
DEERE dealer.<br />
– Have it checked by your JOHN<br />
DEERE dealer.<br />
– Have it checked by your JOHN<br />
DEERE dealer.<br />
– Have it checked by your JOHN<br />
DEERE dealer.<br />
– Have it checked by your JOHN<br />
DEERE dealer.<br />
– Have it checked by your JOHN<br />
DEERE dealer.<br />
– Have it checked by your JOHN<br />
DEERE dealer.<br />
– Have it checked by your JOHN<br />
DEERE dealer.<br />
– Remove belt cover and grass<br />
residue. Check that the swing<br />
arm can move freely.<br />
– Have it checked by your JOHN<br />
DEERE dealer.<br />
– Tighten the blade securing bolt.<br />
– Have it checked by your JOHN<br />
DEERE dealer.<br />
– Have it balanced by your<br />
JOHN DEERE dealer.
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