4.Follow the Maintenance section to keep the unit in good operating condition.
WARNING: Before you make an in- spection, adjustment, or repair to the unit, disconnect the wire to the
spark plug. Remove the wire from the spark plug to prevent the engine from starting by accident.
NOTE: Torque is measured in foot pounds (metric Nm). This measurement describes how tight a nut or bolt must be. The torque is measured with a torque wrench.
Inspect Blade (Figure 7)
WARNING: Before you inspect or remove the blade, disconnect the wire to the spark plug. If the blade
hits an object, stop the engine. Check the unit for damage. The blade has sharp edges. When you hold the blade, use gloves or cloth material to protect your hands.
If you keep the blade (1) sharp and inspect the blade for damage, the blade will cut better and be more safe to operate. Frequently check the blade for excessive wear, cracks, or other dam- age. Frequently check the nut (3) that holds the blade (1). Keep the nut (3) tight. If the blade hits an object, stop the engine. Disconnect the wire to the spark plug. See if the blade is bent or damaged. Check the blade adapter (5) for dam- age. Before you operate the unit, replace dam- aged parts with original equipment parts. See the authorized service centre in your area. Every three years, have an authorized service person inspect the blade or replace the old blade with an original equipment part.
How To Remove And Install The Blade (Figure 7)
1.Remove the mower housing. See the instruc- tions on “How To Remove The Mower Hous- ing”.
2.Use a piece of wood to keep the blade from rotating.
3.Remove the nut (3) that holds the blade (1).
4.Check the blade (1) and the blade adapter
(5)according to the instructions for “Inspect Blade”. Replace a badly worn or damaged blade with an original equipment blade. See an authorized service centre in your area.
5.Clean the top and bottom of the mower hous- ing. Remove all the grass and debris.
6.Mount the blade (1) and blade adapter (5) on the mandrel (6).
7.Mount the blade (1) so that the
(7)are up. If the blade is upside down, the blade will not cut correctly and can cause an accident.
8.Fasten the blade (1) with the original washers and nut (3). Make sure the outside rim of the Belleville washer (2) is against the blade (1).
WARNING: Always keep the nut (3) tight that holds the blade (1). A loose nut or blade can cause an
accident.
9.Tighten the nut (3) that holds the blade (1) to a torque of 30 foot pounds (41,5 Nm).
10.Install the mower housing. See “How To Re- move The Mower Housing”.
How To Adjust The Blade Rotation Control
WARNING: To prevent an injury, the blade rotation control must operate correctly.
In normal usage, the blade rotation control will not require an adjustment. However, if the cut- ting performance decreases or the quality of cut is poor, make the following changes.
1.When you mow, make sure the throttle con- trol in in the FAST position.
2.(Figure 8) Move the blade rotation control to the DISENGAGE position (1).
3.Stop the engine. Disconnect the wire from the spark plug.
4.Check the blade(s). Keep a sharp edge on the blade(s). A blade that is not sharp will cause the tips of the grass to become brown.
5.(Figure 9) Disconnect the blade drive spring (2) from the blade control rod (1). Move the blade drive spring (2) to the middle hole (4). This will increase the ten- sion on the mower drive belt.
6.Attach the wire to the spark plug. Mow for a short distance and again check the quality of cut. If necessary, move the blade drive spring (2) to the bottom hole (5)
7.Again check the quality of cut. If the quality of cut has not improved, replace the mower drive belt. See “How To Replace The Mower Drive Belt”. If the replacing the belt does not correct the problem, take the unit to an auth- orized service centre.
8.Move the blade rotation control to the DIS- ENGAGE position. Stop the engine.
9.(Figure 10) Check the operation of the blade brake. Rotate the pulleys with your hand. Make sure the brake pads (1) are pressed tightly against the pulleys
WARNING: If the brake pads (1) do not press tightly against the pulleys, take the unit to an author-
ized service centre.
10.(Figure 8) Move the blade rotation control to the ENGAGE position (2).
11.(Figure 10) Check the pads for the blade brake (7). If the pads are excessively worn or damaged, replace the brake pad assem- blies. Correct replacement parts and assist- ance are available from an authorized service centre.
12.Attach the wire to the spark plug. Mow for a short distance and again check the operation of the blade rotation control.
13.When you move the blade rotation control to the DISENGAGE position, all movement will stop within five seconds. If there is move- ment of the belt or the blades continue to ro- tate, engage and disengage the blade
10
GB
rotation control five times to remove any ex- cess rubber from a new mower drive belt. If you need assistance, take the unit to an authorized service centre.
14.(Figure 9) If you replace the mower drive belt, move the blade drive spring (2) to the top hole (3).
How To Check And Adjust The Motion Drive Belt (Figure 18 and Figure 21)
If the motion drive belt is loose, the belt will slip when; going up a hill, pulling a heavy load, or the unit will not move forward.
IMPORTANT: Always operate with the engine speed in the FAST position. If the engine speed is in a slow or moderate position, the engine and transmission can become too hot and cause problems that are similar to a loose motion drive belt.
WARNING: Before you make an in- spection, adjustment, or repair to the unit, disconnect the wire to the
spark plug. Remove the wire from the spark plug to prevent the engine from starting by accident.
1.(Figure 21) Check the routing of the motion drive belt (6). Make sure the motion drive belt (6) is installed correctly and is inside all the belt guides (7).
2.(Figure 18) Disconnect the clutch link (1) from the idler arm (2).
3.(Figure 21) Align the hole in the brake lever
(3)with the hole in the frame. Hold the brake lever (3) in place with a 1/4 inch (6 mm) pin or bolt (4).
4.(Figure 18) Rotate the clutch link (1) until the mounting hole (5) in the clutch link (1) is aligned with the mounting hole (5) in the idler arm (2).
5.Connect the clutch link (1) to the idler arm
6.(Figure 21) Remove the 1/4 inch (6 mm) pin or bolt (4).
7.If the belt still slips after the belt has been adjusted, then the motion drive belt is worn or damaged and must be replaced. See “How To Replace The Motion Drive Belt”.
How To Check And Adjust The Drive Brake (Figure 12 and 20)
(Figure 20) Set the parking brake. Move the au- tomatic drive disconnect (1) to the PUSH position (3). Push the unit. If the rear wheels rotate, adjust or replace the brake pads.
Adjust the drive brake (4) as follows:
1.(Figure 12) The location of the drive brake
(4)is on the right side of the gearbox (5).
2.(Figure 20) Make sure the parking brake is set and the automatic drive disconnect (1) is in the PUSH position (3).
3.(Figure 12) Turn the hex nut (6) in a clock- wise direction until the rear wheels do not turn when the unit is pushed forward.
4.Release the parking brake and push the unit. If the unit does not roll, turn the hex nut (6) in a
5.Set the parking brake. Push the unit. If the rear wheels do not turn, the drive brake (4)
