![](/images/new-backgrounds/1094909/9490917x1.webp)
Maintenance and Care
4.3 Spark Plug
The correct spark plug with thermal range 200 is available under the following brands:
BOSCHWSR6F CHAMPION
The correct electrode gap is 0.5 mm.
Check the plug after every 50 operating hours and replace if electrodes are worn.
4.4 Preparation for Storage
Store the motorized mistblower in a dry room. Cover the unit and keep inaccessible to children.
Treatment with special
For extended storage, completely empty the fuel tank.
4.5 Carburettor adjustment
The carburettor has been adjusted optimally at the factory. Subject to the operational altitude (mountains or low lying areas), the carburettor may require readjustment.
Fig. 2a,
Type 444
Fig. 2b, Type 450
The carburettor has 3 adjusting screws:
•Idling
•Low speed mixture screw "L"
•High speed mixture screw "H"
Only qualified mechanics must adjust the regulating screws for idle mixture "L" and full
load mixture "H".
Turn the idling
•If the idling speed is too high, turn the idling end- stop screw "T"
•If the idling speed is too low (engine stops) turn the idling
If the idling speed cannot be set correctly with the idling
The following instructions are for authorised service shops
Information about the standard settings can be requested from the specialist workshop of our customer service department or downloaded from our Internet portal for specialist dealers at
Use the
Carburettors with limiter caps:
The regulating screws for idle mixture and full load mixture can only be adjusted in a limited range.
Clean the air filter before adjusting the low speed screw!
Let the engine run warm before adjusting the engine speed.
The carburettor is tuned for optimum engine performance. Use a rev counter to tune the
carburettor correctly!
Do not adjust the engine to a higher speed. Excessive engine speed can lead to major engine damage!
ENGLISH 9