DR ALL-TERRAIN Service Manual download pdf (Page 199)

100

101

ENGINE TOP END 5-17

Rocker Case

•

Using a M8 bolt [A], remove the rocker shaft [B].

•

Remove:

Rocker Arm [C]

Washers [D]

○

Mark and record the rocker arm location so it can be in-

stalled in the original position.

○

The rocker arms come off with the rocker shafts.

Rocker Arm Installation

•

Apply engine oil:

Rocker Shafts [A]

Hole in Rocker Arms [B]

•

Replace the copper washers [C] with new ones.

•

Install:

Wave Washers [D] (as shown)

Rocker Arms (as shown)

Rocker Shafts and Copper Washers

•

Tighten:

Torque - Rocker Shaft Bolts [E]: 22 N ·m (2 .2 kgf·m, 1 6 ft·lb)

Rocker Arm Inspection

•

Inspect the area [A] on the rocker arm where the cam

rubs.

If the rocker arm is scored, discolored or otherwise dam-

aged, replace it. Also inspect the camshaft l obes.

•

Inspect the end of the valve clearance adjusting screws

[B] where it contacts the valve stem.

If the end of the adjusting screw is mushroomed or dam-

aged in any way, or if the screw will not turn smoothly,

replace it. Also inspect the end of the valve stem.

•

Measure the inside diameter [C] of the rocker arm with a

dial bore gauge.

If the rocker arm inside diameter is larger than the service

limit, replace it. Also check the rocker shaft diameter (see

Rocker Shaft Diameter Measurement).

Rocker Arm Inside Di am e t er

Standard: 12.000 ∼ 12.018 mm (0.4724 ∼ 0.4731 in.)

Service Limit: 12.05 mm (0.474 in.)

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DR ALL-TERRAIN Service Manual Page 199

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