sm2

Description of Operation

As the starter button is depressed, the starter motor begins turning. As the starter motor turns, the sprocket held to the starter motor makes the sprocket wheel turn by means of the chain. The sprocket wheel is provided with a one-way roller lock mechanism. As the sprocket wheel begins turning, the one-way clutch is locked. Thus the turning force is carried from the sprocket to the crankshaft through the chain, sprocket wheel and rotor.

As the engine starts, the crankshaft keeps turning, and the roller lock is released, thus uncoupling the starter motor frorr the crankshaft.

Outer Starter Clutch, Starter Sprocket  1,2 Disassembly

1) Remove the starter clutch holding bolt. With a special tool, (jack screw) remove the starter clutch. The woodruff key should also be removed.

Inspection

Check the contact surface of the sprocket wheel with the roller. If it is excessively roughened, replace both sprocket wheel and roller.

 

2) Remove the starter sprocket   1  and starter sprocket 2 at the same time. Next, remove the chain tensioner.

Installation

Place the chain around sprockets 1 and 2, and install sprockets 1 and 2 at the same time. Install the key, and coat the tapered end of the crankshaft with a morjybdenum disulfide grease, then install the starter clutch.