Stihl HT 135 Instruction Manual - Page 41

Maintenance and Care The following intervals apply for normal operating conditions. The specified intervals must be shortened accordingly when working for longer than normal or under difficult cutting conditions (extensive dust, etc.). Complete machine Visual inspection (condition, leaks) Clean X X X Control handle Function test X X Air filter Clean Replace2) Manual fuel pump (if present) Fuel pickup body in fuel tank check X Have repaired by a specialist dealer1) Have checked by dealer1) Have replaced by servicing dealer1) Fuel tank Clean Carburetor Check idle adjustment - chain must not rotate X X Adjust idle speed Spark plug Adjust electrode gap Replace after every 100 hours of operation Visual inspection X Cooling air intakes Clean Valve clearance1) If power is low or cranking effort very high, have valve clearance checked and, if necessary, adjusted by dealer1) Check if installed X Spark arresting screen in muffler Check or replace1) All accessible screws, nuts and bolts (not adjusting screws) Tighten HT 105, HT 134, HT 135 Before starting work At the end of work and/or daily Whenever tank is refilled Weekly Monthly Annually If faulty If damaged As required English X X X X X X X X X X X X X X X X 39