Husqvarna Essential Spark Plug Maintenance for Optimal 125B Performance

MAINTENANCE

Spark plug

The spark plug condition is influenced by:

SIncorrect carburetor adjustment.

SAn incorrect fuel mixture (too much or in- correct type of oil).

SPoor quality gasoline and/or oil S A dirty air filter.

These factors cause deposits on the spark plug electrodes, which may result in operat- ing problems and starting difficulties.

If the machine is low on power, difficult to start or runs poorly at idle speed: always check the spark plug first before taking any further action. If the spark plug is dirty, clean it and check that the electrode gap is 0,6 mm. The spark plug should be replaced after about a month in operation or earlier if necessary.

0,6 mm

CAUTION! Always use the recommended spark plug type! Use of the wrong spark plug can damage the piston/cylinder.

Maintenance schedule

Below you will find some general mainte- nance instructions.

Daily maintenance

SClean the exterior surfaces of the blower. S Check that the variable speed control and the throttle trigger function in a safe man-

ner. Replace damaged parts.

S Check that the stop switch works proper- ly. Replace if necessary.

S Clean the air filter. Replace if necessary.

S 125BX-SERIES and 125BVX-SERIES:Check that the inlet cover can be locked in the closed position. Carefully check that the fan impeller is clean, especially if the blower has been used for collecting debris (vacuuming).

SCheck that all nuts and screws are prop-

erly tightened.

SCheck that all the housings are free of cracks. Replace damaged parts.

S 125BX-SERIES and 125BVX-SERIES:Check that the collection bag is intact and that the zipper works. Replace it if neces- sary.

545133423 Rev. 4 9/6/07

Weekly maintenance

SCheck the condition of the starter device, the starter cord and the tensioning spring.

Replace damaged parts.

SCheck the condition of the air intake at the starter device. Remove debris if it is

clogged.

SClean the outside of the spark plug. Re- move it and check the electrode gap. Ad- just the gap to 0,6 mm, or replace the spark plug. Use resistor spark plug

Champion RCJ--8Y or equivalent.

SClean the fan blades on the flywheel. S Clean or replace the spark arresting

screen (not on mufflers with a catalytic converter).

S Clean the carburetor area. S Clean the air filter.

Monthly maintenance

SClean the fuel tank.

SClean the outside of the carburetor and the area around it.

SClean the fan blades on the flywheel and the area around it.

SCheck fuel lines for cracks or other dam- age. Change if necessary.

SChange the fuel filter in fuel tank.

SCheck all cables and connections. Re- place damaged parts.

SReplace the spark plug. Use spark plug Champion RCJ--8Y or equivalent.

SChange the air filter.

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