The starter motor turns but
cannot start the engine due to:
Battery insufficiently
charged
Mechanical inefficiency
of the starter motor
Broken flywheel
Engine block problems
Fouling in the combustion
chamber
Insufficient pressure
Lawnmower problems
The lawnmower blade is loose
If the machine's battery is insufficiently charged,
the starter motor turns, but does not have
enough power to start the engine.
The alternator could be delivering insufficient
current to keep the battery charged.
An accumulation of dirt in the zone of the starter
motorís pinion could prevent the pinion from
meshing correctly.
The breakage or abnormal wear of the flywheel
teeth prevent correct meshing with the starter
motor pinion.
Fouling in the combustion chamber absorbs the
fresh mixture, which makes starting difficult and
may impair valve closure.
The cylinder head screws can loosen causing
the gasket to burn.
The piston rings can wear out due to the pas-
sage of dust caused by an excessively dirty or
unoiled air filter or overheating due to the lack of
oil.
Low compression can be due to the burning out
or wear of the valves or seats, or to an incorrect-
ly adjusted clearance.
The loose blade stops the effect of the flywheel
and the kick-back can make starting difficult
Check and recharge
the battery
Check the recharging
system [
6.11.D]
Dismantle the motor
and clean the pinion
zone [
6.11.B]
Check and/or replace
the flywheel
[
6.9.E]
Dismount the cylinder
head and remove foul-
ing [
6.9.C]
Dismount the cylinder
head and replace the
gasket [
6.9.C]
Replace the rings
[
6.10.C
]
Check the wear of the
valves, grind the seats
and adjust the clear-
ance [
6.9.D]
Check that the lawn-
mower blade and hub
are securely fastened
5.1.1
TROUBLESHOOTING
2 / 7
SERVICE MANUAL
page
from
2007 to ••••
4/2007© by GLOBAL GARDEN PRODUCTS
SV200 R200
B) The engine starts badly or kicks back
Probable cause Comment Solution
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