Echo HCA-236ES-LW Operator's Manual

26Maintenance and care50-Hour MaintenanceCylinder cooling fins Remove and clean the cylinder cover and clean dirt and debrisfrom the cylinder cooling fins.Remove and replace the fuel filter Use a piece of metal wire or the like to pick up fuel filterthrough fuel tank opening. Pull old filter from fuel line. Install new fuel filter.Gearcase lubricationTo perform this operation, first remove the gearcase from the out-er tube as follows:1. Clean dirt from grease fitting.2. Loosen the gearcase clamp bolt.3. Remove the index bolt from the gearcase.4. Slide the gearcase out of the tube. Using a grease gun,pump urea-base grease (about 10 grams) into the grease fit-ting on the gearcase.5. Clean up excess grease, then reassemble the gearcaseonto the outer tube. Make sure the index bolt fits into the holeon the outer tube. Securely tighten both bolts.1. Fuel filter 2. Fuel lineNOTEIf filter is excessive dirty or no longer fits properly, replace it.1. Outer tube2. Gearcase clamp bolt3. Gearcase4. Index boltCAUTION Do not remove the D-shaped shim washer from thegearcase clamp. The shim washer prevents damagefrom overtightening the tube clamp bolt.1. Gearcase grease fittings