Part No. 373507
373507_A_HI
12
Maintenance Continued
Checking and Replacing the Blade
• Always check the state of the blade
be
fore commencing work. Do not forget to switch off the
engine!
• Remove the sparkplug wire.
• During work operations if the blade strikes stones or stumps stop straightaway and make sure that
it has not become bent or broken. A damaged blade must be replaced.
• If the blade is very worn, cracked or bent, it may snap and project objects outwards, risking
serious injury.
• Use heavy-duty work gloves to check or replace the blade to avoid risk of injury to hands.
• The blade fixing screws and relative nuts
are also subject to wear. Always
replace them at the same time as the blade, using bolts and screws of the same
grade and type. Torque the bolts to 26-28 ft. lbs. (35.25-37.96 N.m)
• The blade wears more quickly on dry, sandy ground. In these conditions it should be replaced
more frequently.
To remove the blade, proceed as follows:
1. Switch off the engine and disconnect the spark plug wire
2. Adjust the cutting height to maximum
3. Check the state of the blade. Check that the blade is not cracked, bent, excessively worn or
broken
4. When replacement or inspection is completed, reattach spark plug
Checks
• Adjust the belt and cable control tension after the first few working hours to account for initial
break-in.
• Briefly operate all the machine's components to detect any abnormal noises or overheating.
• During the initial running in period avoid heavy-duty usage to encourage proper break-in of
mechanical parts.
• Never neglect maintenance operations after work and carry out all prescribed checks regularly.
Drive Belt
1. Disconnect the spark plug, and then remove the guards.
2. Loosen the blade drive belt guides by loosening the nut and bolt holding them to the base. Do not complete-
ly remove the nut and bolt, just loosening it will allow the belt guide to be moved far enough back to remove the
blade drive belt from the engine drive pulley.
3. Using a 3/8” drive wrench handle, insert it into the transmission drive belt idler arm and turn the idler arm
clockwise looking down from the top of the machine. This will provide enough leverage to remove the belt from
the engine drive pulley.
4. Once the belt is removed from the engine drive pulley, there will be enough slack that the idler arm will swing
free. The idler arm tension spring will most likely become loose from it’s anchor point.
5. Slip the transmission drive belt from around the transmission pulley and pull out of the front of the machine
navigating the belt from around the idler arm.
6. Pull the belt out of the bottom of the machine through the hole under the engine drive pulley.
7. Install the new belt by reversing the steps used to remove the old belt.
8. Place the blade drive belt guides back in their original locations to insure proper operation
9. Reinstall the guards.
10. Check for proper operation.
NOT
FOR
REPRODUCTION
