Extraordinary Maintenance; Diagnostics - Stiga SBC 627 K Manuel D'utilisation

6. EXTRAORDINARY MAINTENANCE

This work must be done exclusively by your
Dealer.
All and any operations performed in unauthor-
ised centres or by unqualified persons will totally
invalidate the warranty.
6.1 TUNING MINIMUM SPEED
WARNING! If the cutting device moves
when the engine is running idle, contact your
Dealer to correctly regulate the engine.
6.2 CARBURETTOR ADJUSTMENTS
The carburettor is tuned by the manufacturer to
achieve maximum performance in all situations,
with a minimum emission of toxic gas in compli-
ance with the regulations in force.
In the case of poor performance contact your
Dealer for a check of the carburation and engine.
6.3 SHARPENING THE SAW BLADE
WARNING! For safety reasons, sharp-
ening and balancing should be done by a
Specialised Centre with suitable skills and
equipment for the job; without risking any
damage to the blade which would make it un-
safe when used.
WARNING! The saw blade is not revers-
ible, thus it must only be used from one side.
The blade must never be repaired, but must be
replaced as soon as signs of breaking are noted
or the sharpening limit is exceeded.

7. DIAGNOSTICS

What to do when ...
Source of problem
1. The engine will not start or will not keep running
Incorrect starting
procedure
Dirty spark plug
or incorrect distance
between the electrodes
Air filter clogged
Carburation problems
2. The engine starts but is lacking in power
Air filter clogged
Carburation problems
3. The engine runs irregularly
and lacks in power when revved
Dirty spark plug
or incorrect distance
between the electrodes
Carburation problems
4. The engine makes too much smoke
Incorrect composition
of the fuel mixture
Carburation problems
5. The cutting device must not move
when the engine is running idle
Incorrect carburation
regulation
22
Corrective action
Follow the instructions
(see chapter 3)
Check the spark plug
(see chapter 5)
Clean and/or replace
the filter (see chapter 5)
Contact your Dealer
Clean and/or replace
the filter (see chapter 5)
Contact your Dealer
Check the spark plug
(see chapter 5)
Contact your Dealer
Prepare the fuel mixture
according to the instruc-
tions (see chapter 2)
Contact your Dealer
Contact your Dealer