Maintenance
Engine
Refer to the separate engine manual for all engine maintenance instructions.
•Check engine oil level before each use as instructed in the separate engine manual packed with your unit. Read and follow instructions carefully.
•Clean air cleaner every 25 hours under normal conditions or once a season. Clean every few hours under extremely dusty conditions. To service the air cleaner, refer to the separate engine manual packed with your unit.
•The spark plug should be cleaned and the gap reset once a season. Check engine manual for correct plug type and gap specifications.
Remove |
Hex Screw |
Figure 12
Removing The Flail Screen
If the discharge area becomes clogged, remove the flail screen and clean area as follows:
•Stop the engine and make certain the Yard Vacuum has come to a complete stop.
•Disconnect spark plug wire from spark plug and ground against the engine.
•Remove the bag or blower chute from the unit as instructed in the OPERATION section to obtain access to flail screen. See Figure 11.
Hex Screw & |
|
Flat Washer |
|
Lock Nut | Flail Screen |
Figure 11
•Remove hex screw on right side of unit that attaches to the fail screen. It may be necessary to remove the hose bracket hanger to get access to the hex screw. See Figure 12.
•Remove hex screw and flat washer on top of rear housing mounting bracket and the lock nut that secures flail screen. See Figure 11.
•Remove and clean the screen by scraping or washing with water. Reinstall the flail screen.
Sharpening Or Replacing Chipper Blade
Because the engine on this unit has a tapered crankshaft, a special impeller tool (part number 753- 0900) is required to remove the impeller assembly. For further assistance, contact your local service dealer.
NOTE: When tipping the unit, empty the fuel tank and keep spark plug side up.
•Disconnect the spark plug wire and ground it away from the spark plug.
•Remove the front hubcaps, lock nuts, front wheels, and wave washers that attach to the pivot arm assemblies. See Figure 13.
•Remove the shoulder screws, thrust and bell washers that go through the pivot arms and height adjustment brackets to the front support brace.
Pivot Arm Assembly | |
| Bell Washer |
| Wave Washer |
| Hubcap |
Height Adjustment |
|
Bracket |
|
Thrust Washer |
|
Shoulder |
|
Screw | Lock Nut |
| |
Figure 13
•Remove the three screws on the upper housing that secure the nozzle cover and the nine screws that secure the lower housing to the upper housing. See Figure 14.
11