Diagnostics - Stiga SHT 660 K Operator's Manual

5.4.3 Replacing the blades
IMPORTANT Blades must be replaced by your
Dealer.
Blades bearing the code indicated on the chart
on page 2 should be used on this machine.
Given product evolution, the above mentioned
blades may be replaced in time with others hav-
ing similar interchangeable and operating safety
features.

6. DIAGNOSTICS

What to do when ...
Source of problem
1. The machine will not start or will not keep running
Incorrect starting
procedure
Dirty spark plug or incor-
rect distance between the
electrodes
Air filter clogged
Carburation problems
2. The machine starts but is lacking in power
Air filter clogged
Carburation problems
3. The machine runs irregularly
and lacks in power when revved
Dirty spark plug
or incorrect distance
between the electrodes
Carburation problems
4. The machine makes too much smoke
Incorrect composition of
the fuel mixture
Carburation problems
5. The blades heat up and give off smoke
Overheating due to poor
regulation
6. The blades move with the engine idling
Incorrect carburation
regulation
Corrective action
Follow the instructions
(see chapter 2)
Check the spark plug
(see chapter 4)
Clean and/or replace the
filter (see chapter 4)
Contact your Dealer
Clean and/or replace the
filter (see chapter 4)
Contact your Dealer
Check the spark plug
(see chapter 4)
Contact your Dealer
Prepare the fuel mixture
according to the instruc-
tions (see chap. 1)
Contact your Dealer
Contact your Dealer
Contact your Dealer
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