Toro Groundsmaster 1200 Service Manual page 27

Troubleshooting
Factors That Can Affect Quality of Cut
Groundsmaster® 1200 Pull-Behind Rotary Mower
18235SL Rev A
There are a number of factors that can contribute to unsatisfactory quality of cut,
some of which may be turf conditions. Conditions such as the excessive thatch,
sponginess, or attempting to cut off too much grass height may not always be
overcome by adjusting the cutting unit or machine. It is important to remember
that the lower the height-of-cut setting, the more critical these factors are.
Remember that the effective or actual height-of-cut depends on the cutting unit
weight, tire pressures, hydraulic counterbalance settings, and turf conditions.
Factor
1. Maximum governed engine speed
2. Blade speed
3. Tire pressure
4. Blade condition
5. Mower housing condition
6. Height-of-cut
7. Cutting unit alignment and ground following
8. Roller and castor wheel condition
9. Grass conditions
10. Machine traction speed
Check that the engine is running at the correct
high-idle speed.
Always mow at high engine speed.
All the cutting unit blades should rotate at the
same speed.
Check the air pressure of all the tires including
castor tires. Adjust to the pressures specified
in the Operator's Manual.
Sharpen the blades if their cutting edges are
dull or nicked.
Inspect the blade sail for wear or damage.
Replace the blade if necessary.
Ensure that the cutting chamber is in good
condition.
Keep the underside of the cutting unit clean.
The unwanted material buildup can reduce the
cutting performance.
Ensure that all cutting unit height-of-cut
adjustments are the same. Adjust the cutting
unit as specified in the Operator's Manual. The
effective (actual) height-of-cut may be different
than the bench set height-of-cut.
Check the lift arms for wear, damage, or
binding. Also, inspect for bent or damaged
pivot shafts.
All rollers and caster wheels should rotate
freely. Replace the bearings if they are worn
or damaged.
Mow when the grass is dry for best cutting
results. Also, remove only 2.5 cm (1 inch) or
1/3 of the grass blade when cutting.
Mowing at too fast of a traction speed will
result in poor after cut appearance and missed
patches of grass.
Page 2–13 Specifications and Maintenance: Troubleshooting
Possible Problem/Correction