Maintenance Instructions

REPLACING/REPAIRING

Fuel Filter

Model MDD has two (2) fuel filters. Replace both the in-line filter and the Kubota filter element every 400 hours of operation.

Kubota

Fuel Filter

In-Line

Filter

Cold Start Lever

(For Reference)

Fuel Filter Location

IMPORTANT: Replace fuel filters only in a clean area where the fuel line and connections will not be contaminated by dust and dirt.

1.Close the fuel tank shut-off valve and the Kubota fuel filter cock.

2.Remove and replace the in-line filter; expand and slide clamps on either side of the filter away from filter and pull fuel lines off filter.

3.Loosen the ring screw on the Kubota filter as- sembly, remove the filter pot and filter element.

4.Clean the filter pot and reassemble the filter as- sembly with a new filter element (use only a Kubota replacement filter #15231-43560).

5.Open the fuel filter cock and fuel tank shut-off valve.

Blade Overload Shear Bolts

NOTE: Shear bolts are not used on the DSD62 mower deck.

The cutting blade is keyed to the blade hub by two

(2)shear bolts (10-24 x 5/8 in. stainless steel ma- chine screws). These bolts are designed to shear and protect the blade drive gearbox from damage if the blade encounters a shock load.

Cutting Blade

Shear Bolts

Cutting Blade Shear Bolts

NOTE: Tightening the 5/8-18 blade mounting nut to 60 ft-lb (81.3 N·m) is also important for proper shock load protection. It is important to not over- tighten the mounting nut since this defeats (over- rides) the function of the shear bolts.

If these bolts shear, remove the blade and install new bolts. Refer to CHECKING/SERVICING in this section for Sharpen Mower Blades which describes the blade removal and installation procedure.

After reinstalling the blade, check blade timing by moving blades through one (1) complete revolu- tion. Make sure blade tips pass clear of each other. If timing is incorrect, contact your Walker Dealer.

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