AIR FILTER
• The air filter, if clogged, will reduce the engine
performance. Check and clean the filter element in warm,
soapy water as required. Dry completely before installing.
If the element is broken or shrunk, replace with a new
one.
• How to attach two air filter elements
1. Attach thin element previously
2. Attach thick element so that stamp side is outside
FUEL FILTER
• When the engine runs short of fuel supply, check the fuel
cap and the fuel filter for blockage.
SPARK PLUG
• Starting failure and mis-firing are often caused by a
fouled spark plug. Clean the spark plug and check that
the plug gap is in the correct range. For a replacement
plug, use the correct type specified by Husqvarna.
• REPLACEMENT PLUG IS NGK CMR7H OR CHAMPION
RZ7C.
• Note that using any spark plug other than those
designated may result in the engine failing to operate
properly or in the engine becoming overheated and
damaged.
• To install the spark plug, first turn the plug until it is
finger tight, then tighten it a quarter turn more with a
socket wrench.
Maintenance
Maintenance, replacement, or repair of the emission control device and systems may be performed by any non-road engine
repair establishment or individual.
■ MAINTENANCE CHART
System/components Procedure
Before
use
Every
25
hours
after
Every
50
hours
after
Every
100
hours
after
Note
ENGINE
fuel leaks, fuel spillage wipe out
✔
fuel tank, air filter, fuel filter inspect/clean
✔✔
replace, if necessary
idle adjusting screw
see adjusting
idling speed
✔
replace carburetor
if necessary
spark plug
clean and readjust
plug gap
✔
GAP : 0.6 ~ 0.7 mm
replace, if necessary
intake air cooling vent clean
✔
TRIMMER
throttle lever, ignition switch check operation
✔
cutting parts clean
✔
gear case grease
✔
screws/nuts/bolts tighten/replace
✔✔
not adjusting screws
debris guard make sure to attach
✔
Make sure that the engine has stopped and is cool before performing any service to the machine. Contact with moving cutting
head or hot muffler may result in a personal injury.
TIGHTENING TORQUE: 9.8 ~ 13.7 N.m
