42 Power Mower 5400 Edition 02.97
5. Maintenance: 4-Stroke-Engine
0.6–0.7 mm
Cleaning the Spark Plug and
Setting the Spark Plug Gap
After every 50 operating hours
l
Remove soot deposits from spark
plug electrodes with a steel brush.
l
Check spark plug gap and, if neces-
sary, re-adjust to 0.6–0.7 mm.
Exchange spark plugs after approx.
100 operating hours.
Fuel Hoses
Exchange after every 2 years. Exchange
leaking fuel hoses immediately.
Cleaning the Fuel Strainer
Check the strainer of the fuel tap (D/4)
at least after 50 operating hours for wa-
ter or other impurities. For this purpose,
close fuel tap, remove fuel strainer and
remove impurities.Then rinse strainer
container in fuel, check fuel strainer and
exchange, if damaged. Then screw back
on correctly, to avoid fuel leakage.
To Next Page
