GROOMING MOWERS - SGM Series - Models SGM 48-60-72-84
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To replace belts do the following (see picture above):
Remove belt covers (A). Clean foreign material from the mower deck and belt area;
Loosen the four nuts (B) holding the gearbox support plate (C) to the gearbox support (D);
Loosen the blocking nut (E) on the adjustment bolt (F);
Turn the adjustment bolt counterclockwise, pushing the gearbox support plate forward until
belt tension is fully released;
Remove old belts, and dispose them properly;
Replace new belts. Be sure that belts are correctly positioned in all pulley grooves. When
correct-ly in pulley grooves, belts are arranged parallel to the mower deck;
Turn the adjustment bolt clockwise. This will bring the gearbox support plate to move
back-wards, tensioning the two belts at the same time. Stop turning the bolt when the proper
belts tension is reached;
Tighten the blocking nut on the adjustment bolt;
Retighten the four nuts holding the gearbox support to the central plate. Replace the belt covers.
The two belts must be always replaced at the same time.
Before installing new belts:
Check that pulley shafts and bearings are in good condition, and make sure that spindles turn
freely and without wobble. Replace weared parts;
Check pulley grooves for cleanliness. If grooves require cleaning, use a cloth moisturized with a
nonflammable, non-toxic degreasing agent or commercial detergent and water.
IMPORTANT
Do not apply excessive force during belts installation. Do not use tools to pry belt into pulley
groove. Do not roll belt over pulleys to install. This can cause hidden damage and premature belt
failure.
6.3. BLADES REPLACEMENT
A proper blades maintenance is crucial to allow the mower to work properly, and to assure a preci-
sion cut with lower HP requirements and reduction of tractor fuel consumption.
Frequently check the blades through visual inspection to see if they are bent, deformed or split.
Blades must be kept sharp, at their original length and shape. A blade must be replaced if, due to
wear or damage, its original shape is deformed.
Operate the mower with blades in bad condition compromise the quality of cutting.
To perform blades replacement do the following (see pictures below):
Remove block the blade shaft by fitting a wrench in special spacer (B) and unscrew blade gua
self-locking nut (C);
Remove the bevel spring (D) and the blade to be replaced (E). Clean bevel washer, gua
self-locking nut (C ) and mounting surface of all debris. Dispose the blade properly;
Install the new blade, making sure that blade cutting edge is towards the direction of rotation
(the blade turns in a counter clockwise direction when viewed from the bottom of the mower);
Reinstall the conical spring and the gua self-locking nut. Tighten the gua self-locking nut,
block-ing the blade shaft by fitting a wrench in special spacer, and align the hole on blade shaft
end to one of gua self-locking nut slots;
Reinstall safety split pin.
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