Stiga MP 84/98 Workshop Manual page 20

WORKSHOP MANUAL
MP 84/98 - MP 84/98 Hy
General informations
This chapter helps achieve a rapid identification
and solution to the most recurrent problems, clas­
sified according to the operating unit in question.
Related topics
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Map of functional units
TROUBLESHOOTING AND REMEDIES
Problem
Low battery
Starter motor does not No starter relay contact
run
Faulty connector and/or starter
motor failure
Blown spark plug electrode
Uncertain connections
The starter motor runs Coil failure
but the engine does not
The carburettor solenoid valve
start
does not open
No fuel is pumped to the
carburettor
The engine runs irregu-
Faulty ignition
larly and/or lacks power
Low fuel level in the tank
Dense and/or blue ex-
Dirty or old fuel
haust fumes
Clogged carburettor filter
Black exhaust fumes Excessively oily carburetion
Spark plugs with inadequate
heat rating
Carburetion problems
Insufficient oil level
Engine overheating
Clogged suction system
Dirty cooling flaps
Broken cooling fan
Engine idling speed is
Incorrect cable adjustment
too high or too low.
Abnormal noise and
Loose bolts and screws
vibrations
[*] Check the engine Manufacturer's Manual
CHAPTER
3.2
1. Engine and Tank
Probable cause
Recharge
Check
Check and/or replace
Replace the spark plugs
Check the connectors
Check and/or replace
Check
Check the filter, fuel pump (if applicable)
and the carburettor
Check the spark plugs and ignition
system
Top up
Empty the fuel tank and add fresh fuel
Check and clean
Check the starter and command cable
Check
Check the carburettor
Check and top up
Check and clean the air filter and the
suction pipe
Clean
Replace
Adjust
Check and tighten to the prescribed
values
REVISION FROM ... PAGE
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Solution
[7.9]
[7.6]
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[6.8]
[5.5]