hecht 5534 SX - Self-Propelled System V-Belt; Engine Maintenance; Inspection and Maintenance Plan

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CAUTION!A Periodically inspect the blade adapter for cracks, especially if you strike
a foreign object. Replace when necessary and check the machine overall.
• For best results your blade should be sharp. The blade may be resharpened by removing
it and either grinding or filing the cutting edge keeping as close to the original bevel as
possible. It is extremely important that each cutting edge receives an equal amount of
grinding to prevent an unbalanced blade. Improper blade balance will result in excessive
vibration causing eventual damage to the engine. The blade can be tested for balance
for example by balancing it on a round shaft screwdriver (fig. 23). Remove metal from
the heavy side by grinding until it balances evenly.
• Before reassembling the blade and the blade adapter to the mower, lubricate the engine
crankshaft and the inner surface of the blade adapter with light oil.
• Place the blade with the part number facing away from the adapter. Align the washer over
the blade and insert the hex bolt. Tighten the hex bolt to the torque listed in the Specifications.
C When you change the blade, must use the original blade (for order the blade,
please contact your local dealer or call our company).
SELF-PROPELLED SYSTEM V-BELT
(only for self-propelled mowers)
The self-propelled system V-belt is located in the working area of the mower under the cover
above the blade. If the belt pulleys are clogged or the space inside of the cover is choked with
grass residues and other dirt, the V-belt may slide down, the cover get damaged, the self-
propelled system fail, etc. Regularly visually inspect that the cover fits tightly and that dirt and
grass do not accumulate underneath it. Remove the cover and remove any dirt from the area
underneath it in the event of a gross clogging of this space. Always clean the cover area when
removing the blade. We recommend having it cleaned at least within the annual maintenance
inspections.
ENGINE MAINTENANCE
INSPECTION AND MAINTENANCE PLAN
FIRST 5 HOURS OF OPERATION
• Check fastening of all nuts.
• Engine oil replacement.
EVERY 25 HOURS OF OPERATION
• Check fastening of all nuts.
• Engine oil replacement.
• Engine oil condition check.
• Clean surrounding of muffler.
• Air filter cleaning.
• Inspection, cleaning and possible spark plug replacement. *
EVERY 100 HOURS OF OPERATION
• Spark plug replacement. *
• Check fuel hose condition.
• Inspection of carburetor adjustment. **